XAP™ 800 Audio Conferencing System Installation & Operation Manual
ii © 2002 ClearOne Communications, Inc. All rights reserved. No part of this document may be reproduced in any form or by any means without written permission from ClearOne Communications. Printed in the United States of America. ClearOne Communications reserves specific privileges. Information in this document is subject to change without notice. XAP 800 Installation and Operation Manual ClearOne Part No. 800-151-101 May 2005 (Rev. 4.
iii XAP 800 Inst allation and Operation Manual Table of Contents CHAPTER 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .1 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Product registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Product returns . . . . . . . . . . . . . . . . . .
iv CHAPTER 3: System Configuration . . . . . . . . . . . . . . . . . . .21 G-Ware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Creating Floppy Disk Copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Installing G-Ware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 To install G-Ware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v CHAPTER 5: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .67 Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67 Signal Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67 Document Compare Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68 Print Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
CHAPTER 1: Introduction Product overview Congratulations on purchasing the XAP 800, a highly advanced twelve-by-twelve digital matrix mixer with Gentner® Distributed Echo Cancellation®, noise cancellation, and audio processing. It uses an internal macro language and 32 userdefinable presets to quickly adapt to a variety of teleconferencing and sound reinforcement applications such as distance learning, teletraining, telemedicine, courtrooms, conference rooms, boardrooms, hotels, and houses of worship.
2 Introduction ~ New Features The GPIO (general purpose input/output) allows switching among any of 32 user-stored presets. This gives you real-time flexibility to meet a variety of reinforcement requirements. Network-based interconnectivity allows up to eight XAP 800s and XAP 400s to be connected and controlled as a single unit, allowing microphone coverage in applications requiring up to 64 mics.
Introduction ~ Professional Services Group Professional Services Group If you need any additional information on how to install, set up, or operate your system, please contact us at one of the locations listed below. We welcome and encourage your comments so we can continue to improve our products and serve your needs. ClearOne Communications ~ 1825 Research Way ~ Salt Lake City, Utah 84119 Technical Support Telephone: 1.800.283.5936(USA) or 1.801.974.3760 Fax: 1.801.977.0087 E-mail: tech.
4 Introduction ~ Unpacking Unpacking Ensure that the following items were received with your shipment: ClearOne is not responsible for product damage incurred during shipment. You must make claims directly with the carrier. Inspect your shipment carefully for obvious signs of damage. If the shipment appears to be damaged, retain the original boxes and packing material for inspection by the carrier. Contact your carrier immediately. ! Figure 1.1.
5 Introduction ~ Controls and Connections C. ▲/▼ These buttons scroll up and down through vertical programming options within a specific XAP 800 programming parameter or increases/decreases a numeric value. D. Esc. This button steps you out of a selected parameter or moves you up one level in the menu. When a parameter has been displayed with the arrow buttons [C], you can select it with the Enter button [B] to modify it. Then, you can step out of the menu with the Esc button. E. LED meter.
6 Introduction ~ Controls and Connections Power is supplied through the RS-485 ports to the remote Control Panels from the XAP 800. This power is limited to a total of 300mA at 15 volts for each connector. Over-current protection is provided on the +15V pins to prevent damage in the event of shorting. External power can be provided to control devices when more current is required. See page 92 for maximum cable run distances when using ClearOne Control Panels. D. Control/Status Ports A and B.
7 Introduction ~ Networking Networking Expansion bus The digital mix-minus expansion bus (RJ-45 LAN) is used to connect up to eight XAP 800/400s and 16 XAP TH2 units, where the total number of microphone inputs does not exceed 64.The maximum distance between interconnected XAP 800/400 or PSR1212 units is 80 feet (24 meters). Connecting a XAP TH2 must not increase the cable length between two PSR1212s, XAP 800s and/or XAP 400s beyond 80 feet.
8 Introduction ~ Operational Requirements Operational Requirements Power The XAP 800 automatically accommodates voltage requirements of 100–240VAC, 50/60Hz, 15W. Equipment placement The XAP 800 units are designed for installation in a standard 19-inch equipment rack. You can also purchase side panels for desktop placement. See Appendix D for a list of accessories. Environmental The XAP 800 can be safely operated in a room with varying temperatures between 32 °F/0 °C and 110 °F/43 °C.
CHAPTER 2: Inst allation The XAP 800 is designed for easy installation and setup. All connections are made through rear-panel connectors.This chapter provides instructions on making hardware connections, creating an expansion bus (E-bus) network, assigning device ID numbers, selecting the mixer mode, and using the front panel LCD menu. Hardware Setup The diagram below illustrates the typical connections that are made for a single-unit XAP 800 system.
10 Installation ~ Hardware Setup Figure 2.2. XAP 800 rear-panel connectors To connect the unit 1. Place the unit in a standard 19-inch rack and attach it securely. 2. If you are using a custom controller for control and status, plug it into the DB25 Control/Status A or B port [D]. If you are using an external RS-232 controller, connect it to the RS-232 port [I].
11 Installation ~ Networking Units Networking Units Expansion bus connections Using the Expansion Bus ports (RJ-45), you can connect up to eight XAP 800/400s and 16 XAP TH2 units, where the total number of microphone inputs does not exceed 64. Make connections between units in daisy-chain fashion using the short RJ-45 jumper. If your units are further apart, use category five twisted-pair cable. The maximum distance between interconnected XAP 800/400 or PSR1212 units is 80 feet (24 meters).
12 Installation ~ Networking Units ✍ If the same device ID is assigned to more than one unit on the E-bus network, the Meter LED “+12” will flash red, the Mic LEDs “1,” “2,” “4,” and “8” will flash green on the affected units. To correct the problem, change the device ID on one of the conflicting units.
13 Installation ~ LCD Programming LCD Programming The XAP 800’s front panel is intuitive to operate, thanks to its simple interface: a 2x16 character LCD, menu buttons, and a peak-level LED bar meter. Although most of the XAP 800’s features are programmed with G-Ware software (see page 23), the ✍ G-Ware software is required to complete system setup. ✍ Pressing Esc at the top of the tree does nothing. front panel can be used for simple adjustments and meter monitoring.
14 Installation ~ LCD Programming The five main menus are: System, RS-232, Meter, Inputs, and Outputs. All submenu items are arranged under these menus. Use the Enter button to select items and the ▲ and ▼ buttons to scroll through menus and submenus. When the last menu item is reached, the display scrolls back to the beginning of the list.The Esc button allows you to back out of the menus. To adjust a parameter 1. Scroll to the parameter you want to adjust. Press Enter to select the parameter.
15 Installation ~ LCD Programming To unlock the front panel, attempt to adjust a parameter. The XAP 800 will prompt for the passcode. Upon entering the fifth character (if entered correctly), the front panel will unlock. The default passcode for all boxes is ▲▲▼▼Enter. Set Passcode Once the XAP 800 is unlocked, the passcode may be changed. Before the XAP 800 will allow passcode changes, the new passcode must be entered, then re-entered to validate the new passcode.
16 ✍ Installation ~ LCD Programming ClearOne recommends that you leave Flow Control enabled. Flow Control (hardware) The XAP 800 uses the RTS and CTS pins on the RS-232 port to regulate the transmission and reception of data. You can enable or disable flow control on the front panel of unit and select the flow control type in the Site Properties window of G-Ware (see page 23). If you select On (default) from the front panel menu, select Hardware as the flow control type in the Site Properties window.
Installation ~ LCD Programming Inputs Select which input (1–12) you want to monitor on the LCD and LED display. Scroll to the input, then press Enter.The meter displayed is the post-gain meter. Outputs This submenu allows you to choose which output (1–12) you want to monitor on the LCD and LED display. Scroll to the output you want to monitor, then press Enter. Processing This submenu allows you to choose which processing channel (A–H) you want to monitor on the LCD and LED display.
18 Installation ~ LCD Programming Gain This submenu allows you to adjust the gain for the selected input. Use the ▲ and ▼ buttons to increase or decrease gain. Outputs menu There are two submenus under the Outputs menu: Mute and Gain.To access these submenus you must first select the output. Choose from Outputs 1–12. Use the ▲ and ▼ buttons to select the Outputs menu, then scroll through the options and press Enter when you reach the desired option.
19 Figure 2.7.
20 Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
CHAPTER 3: System Configuration ClearOne’s G-Ware software provides an easy interface for configuring and controlling your XAP 800. While some configuration can be done using the front panel LCD menus, G-Ware is required to complete the custom configuration of your audio conferencing system. If you are using the default settings, no configuration is necessary. This chapter describes how to install G-Ware and create a site. It also describes all configurable parameters of your system.
22 System Configuration ~ Installing G-Ware Creating Floppy Disk Copies Depending upon the computer equipment you have available, you might need to install G-Ware software from floppy disks rather than the included CD.To do this, a Disk Copy program is provided in G-Ware that allows you to transfer G-Ware to floppy disks. You will need a PC with a CD-ROM drive to make the transfer.
23 System Configuration ~ Site Setup Site Setup Creating a new site New site files are created through the Site Properties window in G-Ware. A site file contains all information about a particular installation including all unit settings and ✍ Whenever a mouse click is indicated in this manual, it refers to the left mouse button unless otherwise stated. properties. It also provides G-Ware with the necessary information to communicate with the site hardware using your PC.
24 System Configuration ~ Site Setup Adding a XAP 800 You can add a XAP 800(s) to your site file by connecting to your site and using G-Ware to automatically create icons for the detected units. Or, you can work offline and manually add the unit(s) to the site file and connect to the site at a later time.To open an existing site file, click the Open Site File button or select Open Site from the Figure 3.6. Open Site File button File menu. To auto-detect units 1.
25 System Configuration ~ Site Setup Configuring Unit Properties Using the Unit Properties window, you can configure the unit‘s communication and security properties in addition to general unit properties such as name, type, and country code.The Unit Properties window automatically opens when you manually add a unit to the site. You can also right-click the unit icon in the site pane and click Unit Properties. To configure Unit Properties 1. Figure 3.11.
26 System Configuration ~ Site Setup 8. If a modem is connected to the XAP 800 unit, select Use Modem and enter the initialization string. Click OK; the XAP 800 will initialize the modem. 9. Click the Security tab. Create a modem password. The password will be required before control of the system is allowed. The default modem password is a carriage return. 10. Preset/Macro Password enables you to password protect your individual presets and macros. To create a password, click Preset/Macro Password.
27 System Configuration ~ G-Ware Screens G-Ware Screens G-Ware has three modes: Configuration, Preset, and Macro Recorder. Configuration is used to configure the unit and is the default mode.The Preset and Macro modes are discussed in Chapter 4: Advanced Configuration. You can switch between modes by clicking on the corresponding toolbar button.The current mode is displayed on the status bar. There are two main configuration screens, the Flow Screen and the Matrix Screen.
28 System Configuration ~ G-Ware Copying and pasting settings G-Ware has shortcut menus which appear when you right-click a selection or program window in G-Ware.These shortcut menus provide quick access to options such as Print, Copy, and Paste that pertain only to that selection or screen region. Figure 3.17. Unit shortcut menu Using the Copy and Paste commands, you can copy and paste unit data such as a single setting or the entire unit’s settings depending on which window you are in.
29 System Configuration ~ G-Ware Screens Matrix Screen The Matrix Screen is used to route audio to one or more destinations (outputs, expansion bus, or processing). Any number of connections to outputs can be made in the matrix.The Matrix Screen can also be used to access the Input, Output, and Processing configuration windows by clicking on the buttons along the top and left sides of the routing matrix. Toolbar Menus Labels Site pane Matrix Screen Status bar Figure 3.20.
30 System Configuration ~ Audio Routing Audio Routing Audio is routed in the Matrix Screen (see Figure 3.20 on previous page).To access the Matrix Screen, click on the Matrix button on the Flow Screen.To return to the Flow Screen, click the Flow Screen button. The XAP 800 routing matrix has 32 possible input sources and 32 output destinations, with level control at each cross point. Any input or combination of inputs can be routed to any output or any combination of outputs.
31 System Configuration ~ Audio Routing numerical value directly in the window). The attenuation range is from 0 to -60dB. Click Close to exit. Note that the level control you have selected for the cross point is indicated numerically in the cross point cell. The Cross Point shortcut menu also allows you to copy and paste the current Cross Point configuration, including attenuation, to other cross points. You can copy a single cell or the entire matrix using the shortcut menu options.
32 System Configuration ~ Inputs and Outputs Inputs and Outputs ✍ Inputs 1–8 accept either microphone (-55, -25dB) or line level (0dB) inputs. Inputs 1–8 To open the Inputs 1–8 configuration window, click the Inputs 1–8 button on the Flow Screen.The In 1–8 button on the Matrix Screen will also open this window. These inputs are balanced and support both mic and line levels. ✍ ClearOne recommends using the XAP to mute mics instead of using the mute provided by some microphones.
33 System Configuration ~ Inputs and Outputs The Speech Leveler is a compander that is optimized for speech audio. It quickly equalizes the difference in speech levels in the room without bringing up noise. If you use AGC with the Speech Leveler, set the AGC Response Time to >2 seconds. AGC adjusts softer and louder input audio to a consistent level that you select (the target level). The target level range is from -30 to 20dB in 1dB steps. The default target level is 0dB.
34 System Configuration ~ Inputs and Outputs If you select a virtual echo cancellation reference, the Virtual Reference window will open. You can also open this window from the G-Ware toolbar. Figure 3.29. Virtual Reference toolbar button Figure 3.30. Virtual Reference window. Use this window to select which signals will be used by the four Virtual Reference points. The routing matrix portion of this window cannot be edited. Virtual references are used when you need to reference multiple outputs.
35 System Configuration ~ Inputs and Outputs Non-linear Processing (NLP) The Non-linear Processing (NLP) feature increases the power of echo cancellation for difficult acoustical environments. NLP features four settings: Soft (6dB), Medium (12dB), Aggressive (18dB), and Off. Use NLP with care; corresponding trade-offs can include suppression and half-duplex operation. Default is Soft.
36 System Configuration ~ Inputs and Outputs Figure 3.32. Inputs 1–8 Filters window Type Use the Type list to select from the following input filters: All Pass, High Pass, Low Pass, Notch, and PEQ. G-Ware features other filters which are configured in the Processing section of the software (see page 49). • All Pass. Frequency range is 20Hz to 20kHz with resolution to 1Hz or four places (whichever is larger). • High Pass. Selectable frequency cutoff is 20Hz to 20kHz, in 1Hz increments.
System Configuration ~ Inputs and Outputs Bandwidth. Bandwidth establishes the difference between the upper and lower points of a filter’s audio passband. Bypass. The Bypass box, when selected, bypasses the selected filter. Phase. Phase generates—on the graph—the phase relationship of the graphed frequency response. Bypass All. Bypass All bypasses all filters. Add Filter. Add Filter adds a filter to the graph, centered at 1kHz and 0dB. Remove Filter.
38 System Configuration ~ Inputs and Outputs Gate The XAP 800 has unique gating parameters which control microphone activation. The Gate button on the selected input in Inputs 1–8 window opens the Gate configuration window where you can establish the gating parameters for the input. Activation There are three mic activation settings: Auto Gate, Manual On, and Manual Off. • Auto Gate determines mic gating based on the input level and gating settings for the gating group the input is assigned to.
System Configuration ~ Inputs and Outputs Figure 3.35. XAP 800 automixing gate functions Gate Ratio Gate Ratio specifies how much louder the audio level must be above the ambient level before the channel gates on.The gate ratio range is from 0 to 50dB. Default is 15dB. Hold Time Hold Time determines how long the channel stays gated on after the audio is below the threshold.The hold time range is from .1 to 8.0 seconds. Default is .3 seconds.
40 System Configuration ~ Inputs and Outputs ✍ The PA Adapt Reference and AEC Reference are the same for each channel. If you change the PA Adapt Reference for a channel, you will also make the same change to that channel’s AEC Reference. PA Adapt and AEC Reference When using either the PA Adaptive mode (see page 38) or Acoustic Echo Cancellation (see page 33), the output that carries this information, i.e. the reference output, must be defined.
41 System Configuration ~ Inputs and Outputs Gating Group Select In addition to specifying gating characteristics for each mic input, you can assign the inputs to a gating group for greater flexibility and control. When inputs are assigned to a gating group, the gating information from the inputs is used to control how the Figure 3.39. Gating Group Select pane entire mixer behaves.
42 System Configuration ~ Inputs and Outputs 3. Leave 1st Mic Priority selected (default) to enable this feature; otherwise, clear the selection to disable it. ClearOne recommends leaving this setting on. This setting helps maintain maximum audio intelligibility by allowing only one mic to gate on to a participant’s voice. 1st Mic Priority allows more than one microphone to be activated at the same time—it simply restricts mics from gating on to the same audio source.
43 System Configuration ~ Inputs and Outputs Optimizing input gain structure How you adjust an input’s gain directly affects sound quality.The optimal input gain setting is one which is adjusted as high as possible above the noise floor without introducing clipping. Clipping can cause distortion which can damage amplifiers and loudspeakers. To adjust the input level properly, place a signal on the input at the maximum level it will generate.
44 System Configuration ~ Inputs and Outputs Inputs 9–12 The XAP 800 supports 4 line level only inputs for auxiliary audio sources such as video codecs and CD players.To open the Inputs 9–12 configuration window, click the Inputs 9–12 button on the Flow Screen.The In 9–12 button on the Matrix Screen will also open this window.These non-gated inputs are balanced.The nominal input level is 0dBu. Figure 3.45. Inputs 9–12 Configuration window To select an input channel, click a blank area in the input pane.
45 System Configuration ~ Inputs and Outputs Gain The Gain slider on the selected input in the Inputs 9–12 window is used to adjust input volume level. • Max adju Use the Gain slider to adjust input volume level. You can also enter the level directly in the decibel box below the gain scale. M in adju Min/Max limits Use the yellow and blue upper and lower limit arrows on the Gain scale to create Figure 3.46. Gain adjust on line level input minimum and maximum gain level limits.
46 System Configuration ~ Inputs and Outputs Outputs 1–12 The XAP 800 has 12 line level outputs for sending audio to video codecs, recorders, or amplifiers.To open the Outputs 1–12 configuration window, click the Outputs 1–12 button on the Flow Screen.The Outputs 1–12 button on the Matrix Screen will also open this window. Figure 3.48. Outputs 1-12 configuration window These line level outputs are balanced. The nominal output level is 0dBu. The outputs can adjust from -65 to 20dBu.
47 System Configuration ~ Inputs and Outputs support passing NOM information. Enable NOM if you want to place this output in a constant gain mode. Default is on. When enabled, the NOM button light illuminates green. Gain The Gain slider on the selected output in the Outputs 1–12 window is used to adjust output gain level. • Use the Gain slider to adjust output volume level. You can also enter the level Max adjust M in adjust directly in the 0.0dB box.
48 System Configuration ~ Expansion Buses Expansion Buses ✍ Routing of audio to the expansion buses is done in the Matrix Screen. See page 30. For information on setting up an expansion bus network, see page 11. From Expansion Bus O–Z Click the From Expansion Bus O–Z button on the Flow Screen to open the From Expansion Bus Labels window. You can also access this window from the Matrix Screen. Figure 3.50.
49 System Configuration ~ Processing Processing Processing A–H There are eight processing blocks in the XAP 800, each with filters, compressors, and delay to provide pinpoint audio configurations.To open the Processing configuration window, click the Processing A–H button on the Flow Screen.The To and From Processing buttons on the Matrix Screen will also open this window. ✍ ClearOne recommends using the XAP to mute mics instead of using the mute provided by some microphones.
50 System Configuration ~ Processing Cmprs (compressor) Cmprs opens the Compressor Setup window (see Figure 3.53). With the compressor you can change the gain transfer characteristics of the signal path and control the dynamics of a signal. When the signal exceeds the threshold level, gain reduction occurs at the rate specified by the reduction ratio. The attack time determines how aggressively the compressor reacts to increases in level.
System Configuration ~ Processing Post Compressor Gain Adjust the compressor gain with the gain slider or by using the ▲ and ▼ buttons.The graph reflects the input/output decibel levels with the gain setting you select. Threshold Threshold determines the RMS level at which the compressor begins to operate.The range is from -30 to +20dBu. Default is 0dBu. Ratio Ratio changes the rate of compression applied to the input signal as the signal exceeds the threshold level.The range is 1:1 to 1:20dB.
52 System Configuration ~ Processing The frequency response and phase vs. frequency of the total transfer function of all filters is displayed in the window. Each filter can be disabled without affecting the filter settings. All filters can also be disabled using a single command. By default, they are not enabled and the filter types are not defined. Below is a description of each feature in the window. Active Filter The Active Filter displays the filter that is applied to the processing channel.
53 System Configuration ~ Processing Figure 3.55. Low/Mid/High Loudspeaker Driver configuration Refer to the figure above. Note that as you create filters across several processing channels, you can observe their crossover points and general shape of the frequency response. In this case, several Linkwitz-Riley filters are being created across three processing channels to establish a balanced frequency response from low-frequency, midrange, and high-frequency transducers.
54 System Configuration ~ Processing Introducing an appropriate amount of delay to the forward-mounted driver(s) re-establishes the acoustical alignment necessary for proper sound imaging in a room. The same principle of introducing delay applies to separate speaker enclosures located various distances from the listening area. Other types of delay to consider when establishing delay parameters are delays which occur naturally as a result of processing operations within the XAP 800.
CHAPTER 4: Adv anced Configuration Presets Overview For many audio conferencing applications, a great deal of system flexibility is needed to meet the challenges presented by changing meeting or conference room requirements.These requirements may include changes in muting, audio sources, room orientation, or room combining. And ideally, these changes are made instantaneously—without interrupting or affecting any meetings in progress.
56 Advanced Configuration ~ Presets G-Ware Toolbar G-Ware Menus Preset Configuration Pane Preset Matrix Screen Status Bar Figure 4.2. Preset Mode Matrix Screen The Matrix Screen in the Preset Mode is very similar to the Matrix Screen in Configuration Mode. All Input, Output, and Processing windows can be accessed by clicking on their respective buttons. You can also create custom labels by clicking on the current labels. The routing matrix is grayed out because no routing changes have been made.
57 Advanced Configuration ~ Presets Preset Description. Use the Preset Description box for entering information about the preset.This description is stored in the site file, not the unit. Preset Mask Control/Status B. With Preset Mask Control Status B you can require an active high (H) or active low (L) contact on a control pin (1–19 odd numbers) or combination of several contacts in order to run the preset. A typical use for Preset Mask Control Status B is a room combining Figure 4.4.
58 Advanced Configuration ~ Presets Virtual Reference. The Virtual Reference button opens the preset Virtual Reference window. Using the Virtual Reference window, you can select which signals will be ✍ To enable Acoustic Echo Cancellation or to change which outputs, expansion bus references, or virtual references will be used for this preset, open the Acoustic Echo Canceller window from the Inputs 1–8 configuration window. used by the four Virtual Reference points in this preset configuration.
Advanced Configuration ~ Presets To create a preset 1. From the Preset Selection list, select the number of the preset you will be configuring. Enter a description of the preset in the Preset Description box. 2. If you want to password protect this preset, click Protected. See page 26 for information on creating the preset password. 3. Configure the routing matrix and make cross point attenuation adjustments. 4. Configure input, output, processing, and telco channel settings as needed.
60 Advanced Configuration ~ Presets Running presets Presets can be run from G-Ware or the front panel controls on the XAP 800. You can also program external control devices (such as AMX or Crestron, ClearOne Control Panels, XAP IR Remote, and GPIO devices) or use macros to run presets. See Chapter 6: Control for more information on creating custom control. To run a preset using G-Ware Figure 4.7. Execute Preset toolbar button 1. Select the Execute Preset button on the G-Ware toolbar. 2.
61 Advanced Configuration ~ Presets Figure 4.9. Assigning a state to a preset command in the Macro Editor If a preset is flagged as “On,” nothing will happen when the preset is executed again because the system knows it has already been run. This prevents any manual adjustments that are made during the course of the meeting (gain, muting, etc.) from being lost. Room combining example In the room combining scenario depicted in Figure 4.
62 Advanced Configuration ~ Presets The four macros (one for each configuration) are set up as follows: 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 When the room is in Configuration 1, running the Configuration 2 macro will change the presets to the following states: • P1 does not change because the flag is already set (1) • P2 and P3 clear their states (0) so they can be run • P4 runs and sets its state to on (1) which prevents other presets from reruning it • P5 and P6 clear their states
63 Advanced Configuration ~ Macros Macros A macro is a series of commands which can be run from G-Ware, the front panel controls, or by using any external control device. Macros streamline the operation of the XAP 800, allowing you to make quick configuration changes and, as previously discussed, making it possible to execute multiple presets simultaneously (see pages 60–62). Macros can also contain commands that are executed on other XAP units.
64 Advanced Configuration ~ Macros To create a macro using Macro Editor 1. Click the Macro Editor button in the G-Ware toolbar to open the Macro Editor. Figure 4.14. Macro Editor button Figure 4.15. Macro Editor window 2. Select the Macro (from 1 to 255) you are creating from the Macro list. Numbers that are already assigned to macros will be marked with an asterisk. 3. Select the Protected check box to lock your macro. Locked macros are indicated by a padlock icon.
Advanced Configuration ~ Macros 9. Click Add to place the command into the macro. The command line now appears in the command line table. You can now create another command line for the macro or save the completed macro. Editing macros With the Macro Editor, you can add, edit, or remove command lines in the macro. If you used the Macro Recorder to create a macro, the Macro Editor opens automatically. Otherwise, click the Macro Editor toolbar button. To edit a macro 1.
66 Advanced Configuration ~ Macros Running macros Macros can be run from G-Ware or the front panel controls on the XAP 800. You can also run a macro using external control devices (see Chapter 6: Control for more information). To run a macro using G-Ware Figure 4.17. Run Macro toolbar button 1. Select the Run Macro button on the G-Ware toolbar. 2. Select the macro from the Select Macro list. Figure 4.18. Run Macro window 3. Click Run to run the macro and close the window.
CHAPTER 5: Operation G-Ware features several tools designed to assist you as you install your XAP 800 Audio Conferencing System including Signal Generator, Document Compare, Print Reports, Copy and Paste, and Message Log. G-Ware also provides Gate Views and Meters so you can quickly monitor or troubleshoot your system.This chapter describes how to use these utility programs and monitoring views in G-Ware. Utilities Signal Generator Figure 5.1.
68 Operation ~ Utilities To use tone 1. Select the XAP 800 Unit and Input Channel the signal will be generated on. 2. Select Tone. 3. Using the Frequency slider, select a specific tone frequency. You can also enter the frequency in the box directly below the Frequency slider. – or – Use the Auto Sweep button to sweep a range of frequencies. Select the Begin Frequency, the End Frequency, the Increment, and the Rate.
Operation ~ Utilities Figure 5.5. Open window 4. Repeat steps 1–3 to select the second second unit, site, or file for comparison. When you click Open, G-Ware automatically compares information from the selected items and displays a table of parameters which differ (note that the actual differences are not displayed at this point). This process can take a minute or two. Figure 5.6. Document Compare Utility showing two XAP 800 sites.
70 Operation ~ Utilities Figure 5.7. Print Preview window 6. To print the report, click Print (you can also click Print in the Compare Utility window to print the report). The other buttons in this window allow you to tailor the view of the report and browse sequentially through each page. 7. When you finish viewing or printing the report, close the Print Preview window to return to the Document Compare Utility.
Operation ~ Utilities In the window shown in Figure 5.9, clicking the Site 1 button transfers the selected settings from a line selected in the Site 2 column to the corresponding line in the Site 1 column. The Copy button copies the settings of the Site/Line above it, allowing you to paste (with the Paste button) settings to another site, unit, or even to a particular G-Ware parameter, such as an input.
72 Operation ~ Utilities ✍ Make a note of the baud rate selected in the Site Properties window before opening the G-Ware Firmware Utility. GFirm Firmware Utility To make it easy to upgrade your unit when new firmware enhancements are released, G-Ware features a built-in firmware upgrade utility. Before upgrading firmware, save a copy of your site files and verify that the flow control setting on the unit (RS232 menu on front panel LCD) is enabled.
73 Operation ~ Utilities 5. Select the PC COM port you are using for the upgrade. Select the Baud Rate that matches the baud rate in the Site Properties window. Figure 5.13. Selecting baud rate 6. Click Next. If the upgrade requires you to save your site files, a warning message will display. You will need to exit the G-Ware Firmware Utility, sync to the units with G-Ware, and save the site file(s) if you have not done so already. Click Yes, Continue to begin firmware upload. 7.
74 Operation ~ Utilities G-Ware Switcher ✍ If you want to reinstall previous versions, you must install them in different directories or G-Ware Switcher will not work properly. G-Ware Switcher allows you to alternate between different G-Ware software versions that are installed on the same PC. For example, if you need to upgrade the firmware on your ClearOne unit(s), GWare Switcher allows you to easily switch to an earlier version of G-Ware (such as 3.
75 Operation ~ Monitoring Views If the selected G-Ware version is not active, click Re-Register/Make Shortcuts to re-register the version so it becomes active. Then click Run to launch it. If you have installed a version of G-Ware that isn’t displayed in the G-Ware Switcher window, click Refresh. G-Ware Switcher will locate and display the version. Copy and paste settings In most areas of G-Ware software, right-clicking the mouse opens a shortcut menu.
76 Operation ~ Monitoring Views Figure 5.21. Gate View window Meter Views The Meter Views window allows you to monitor the level of any input, output, or processing signal of the XAP 800. You can monitor the same parameter on multiple inputs (or outputs or processing channels) for comparison or you can monitor an Figure 5.22. Meters button entire signal flow from input to output. Click the Meters button on the G-Ware toolbar to open this window. Figure 5.23.
CHAPTER 6: Control There are many ways to control your XAP 800 and other networked units.This chapter explains how to set up control for Control/Status A port using GPIO Builder, XAP IR Remote and ClearOne Control Panel using Remote Builder and RS-232 port. GPIO Builder Control/Status A GPIO stands for general-purpose input/output.The GPIO Builder is used to establish the pin assignments for the 16 user definable pins on Control/Status Port A.
78 Control ~ Remote Builder Remote Builder The Remote Builder window is used to configure optional XAP IR Remotes and ClearOne Volume and Select Control Panels.These control devices are connected to Remote Panel A or Remote Panel B—the RS-485 connectors. If you want to create custom control assignments for presets, open the Remote Builder from the Preset Configuration pane and select the Use in Preset option.
79 Control ~ Remote Builder To program the XAP IR Remote 1. Select an ID number for the remote from the Select Remote ID list. 2. Click Change Name to create a more descriptive name for the remote which is displayed in addition to the remote number (limit 20 characters). 3. Select IR Remote (default) from the Select Remote Type list. 4.
80 ✍ Each Control Panel button can be programmed to respond like a momentary or latching button. A command can be programmed to activate or deactivate a particular function. Control ~ Remote Builder To program the Volume panel 1. Select an ID number for the remote from the Select Remote ID list. 2. Click Change Name to create a more descriptive name (limit 20 characters) for the remote which is displayed in addition to the remote number in the Select Remote ID list.
81 Control ~ Remote Builder 6. Select the Device Type, ID, and Command from their respective lists. When you select a command, a description of it appears in the Command Description box. 7. Select the command parameters from the argument lists. The parameters that are available depend on the command selected. When you select an argument, a description of it appears in the Argument Description box. 8. Click the Apply button to apply the command to the selected Active or Inactive command button.
82 Control ~ RS-232 Port 5. Click the Active Command or Inactive Command button to set the command for operation when the button is active or inactive. 6. Select the Device Type, ID, and Command from their respective lists. When you select a command, a description of it appears in the Command Description box. 7. Select the command settings from the argument lists. The options that are available depend on the command selected.
83 Control ~ RS-232 Port Command strings By creating command strings, you can use your XAP 800 to control equipment such as lighting, projectors, and room dividers as well as other ClearOne products. A command string is passed to the connected device via the XAP 800’s RS-232 port. You can create up to eight customized serial command strings (limit 80 characters each) in the Command Strings window.To open the Command Strings window, click the Command Strings toolbar button. Figure 6.7.
84 Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
APPENDICES Appendix A: Specifications Dimensions (LxDxH) 17.25" x 10.25" x 1.75" 43.8 x 26 x 4.5 cm Weight 7 lb/3.2 kg dry 12 lb/5.5 kg shipping Operating Temperature 32–100° F/0–38° C Humidity 15% to 80%, non-condensing Power Input Range Auto-adjusting 100–240VAC; 50/60Hz Power Consumption 30W typical Expansion Bus In/Out Proprietary Network RJ-45 (2), 115.
86 Appendices ~ Appendix A: Specifications Last Mic Mode Maximum # of Mics Mode Ambient Level Gate Threshold Adjust Off Attenuation Adjust Hold Time Decay Rate Microphone Input Configuration Input Gain Adjust Mic or Line Level Phantom Power on/off Echo Cancellation on/off Noise Cancellation on/off Filters All Pass Low Pass High Pass Notch PEQ Mute on/off Chairman Override on/off AGC on/off Speech Leveler on/off Auto Gate/Manual gate Adaptive Ambient on/off Set-up Software G-Ware Technical Services Group
87 Appendices ~ Appendix B: Pinouts Appendix B: Pinouts 5 1 RS-232 COM DCE port pinout (female) Pin Number Control Pin Number 9 Control 6 Figure B.1. RS-232 connector 1 DCD 6 DSR 2 TXD 7 CTS 3 RXD 8 RTS 4 DTR 9 No connection 5 Ground DB-9 Male XAP 800 ! DB-9 Male DB-9 Female ClearOne recommends that all nine pins be connected to avoid communication errors.
88 Appendices ~ Appendix B: Pinouts Control/Status connectors The Control/Status connections are provided on two DB-25 connectors.These connectors are labeled Control/Status A and Control/Status B and contain different types of pins.The inputs on these connectors are internally pulled high and are activated by connecting the pin to ground.The outputs are open collectors, which are Figure B.6. Control/Status Ports A, B open when inactive and grounded when active.
89 Appendices ~ Appendix B: Pinouts Control/Status B port pinout Pin Definable* Type Default Description 1 No C Preset select bit 2 No S Preset select status for Pin 1 3 No C Preset select bit 4 No S Preset select status for Pin 3 5 No C Preset select bit 6 No S Preset select status for Pin 5 7 No C Preset select bit 8 No S Preset select status for Pin 7 9 No C Preset select bit 10 No S Preset select status for Pin 9 11 No C Preset select bit 12 No S Pres
90 Appendices ~ Appendix B: Pinouts RS-485 Remote Panel A and B connectors 4 3 2 1 4 3 2 1 Pin Description 1 +15VDC, 300mA (over-current protected) Figure B.7.
91 Appendices ~ Appendix C: Control Panel Appendix C: Control Panel The Volume Control Panel and Select Control Panel connect to either the Remote Panel A or B connector of the PSR1212, XAP 800, or XAP 400 and works by triggering the execution of programmed commands from the XAP/PSR unit. Each button on the control panel is programmable to execute a single command or a This equipment must be installed according to applicable local electrical ! codes. series of commands.
92 Appendices ~ Appendix C: Control Panel ✍ Control Panel Assembly Dimensions (both versions): 1.8ý/4.6cm W x 4.125ý /10.5cm L (not including faceplate or electrical box). 6. Connect one connector terminator block to the Remote Panel on the XAP/PSR unit. Route the other end of the cable through the back of the electrical wall box and connect the terminator block to the Control Panel. 7.
93 Appendices ~ Appendix D: Accessories 460-155-002 WALL ENCLOSURE 2.25 X 3.
94 Appendices ~ Appendix E: Serial Commands Appendix E: Serial Commands The XAP 800 accepts serial commands through the serial port or the expansion bus.The commands in this manual pertain only to the XAP 800. RS-232 serial port protocol is 9,600, 19,200, 38,400 (default), or 57,600 baud; 8 bits, 1 stop bit, no parity. Conventions The following typographic conventions are used in this document to describe the different serial commands.
Appendices ~ Appendix E: Serial Commands Groups and channels If a channel has an alpha value of “*”, the command is to be applied to all channels. For example, a group value of M and a channel value of * would mean that the command is to be applied to all channels of group M (mic inputs). The following table shows the alpha representations for the different groups and the channels that are available for each product.
96 Appendices ~ Appendix E: Serial Commands Meter type definitions Serial command error codes Error number Text message Explanation/Solution 1 Memory error The box is out of internal memory. Power cycle the box. 2 No command found A command was not found in the string. 3 Unknown command response A command was executed on a different device type that this box cannot display.The command dictionary needs to be updated. 4 Not implemented The command is not implemented.
97 Appendices ~ Appendix E: Serial Commands XAP 800 Serial commands Command Function Command Function AAMB Selects/reports adapt ambient setting LOCK Selects/reports the state of the preset and AEC Selects/reports acoustic echo canceller setting macro lock.
98 Appendices ~ Appendix E: Serial Commands Command Function Command Function NCSEL Selects/reports noise cancellation on/off for REFSET Selects/reports the output the reference channel each mic channel tracks NLP Selects/reports NLP for each mic channel SERECHO Selects/reports the serial echo of the RS-232 NOM Selects/reports NOM setting on output SERMODE Selects/reports the serial mode of the RS-232 channels SFTYMUTE Selects/reports the state of the safety mute.
Appendices ~ Appendix E: Serial Commands AAMB - Adaptive Ambient Mode This command selects/reports the setting of adaptive ambient. Command form: DEVICE AAMB [Value] : Argument details Name Device AAMB Channel Group Value Description 0–7 or * to select all units Command form Range 1–8 (Selects input) M (Selects mic group) 0 = Off, 1 = On, 2 = Toggle, Null to query in text Example: #51 AAMB 2 1 On XAP 800 unit 1 (#51), adaptive ambient (AAMB) for mic channel 2 (2) is set on (1).
100 Appendices ~ Appendix E: Serial Commands AGCSET - Automatic Gain Control Adjust This command selects/reports the settings of the AGC on the input channels. Command form DEVICE AGCSET [Threshold] [Target] [Attack] [Gain] Argument details Name Device AGCSET Channel Group Threshold Target Attack Gain Description 0–7 or * to select all units Command form See Groups and Channels on page 97 1,3,7,(I,M,L) -50 to 0 Null to query in text -30 to 20 0.10–10.00 (select in .1s intervals) 0.
Appendices ~ Appendix E: Serial Commands BAUD - Baud Rate This command selects/reports the baud rate of the serial port. Command form: DEVICE BAUD [Value] Argument details Name Device BAUD Value Description 0–7 or * to select all units Command form 9600, 19200, 38400, 57600 (Null to query in text) Example: #56 BAUD 38400 On XAP 800 unit 6 (#56), the baud rate (BAUD) for the RS-232 port is set to 38,400 (38400).
102 Appendices ~ Appendix E: Serial Commands COMPRESS - Compressor Adjust This command selects/reports the setting of the compressor on processing channels. Command form DEVICE COMPRESS [Threshold] [Ratio] [Attack] [Release] [Gain] Argument details Name Device COMPRESS Channel Threshold Ratio Attack Release Gain Description 0–7 or * to select all units Command form Range A–H (selects processing channel) -30 to 20, Null to return current value 1 to 20 0.00 to 100.00 (select in .
103 Appendices ~ Appendix E: Serial Commands DECAY - Decay Adjust This command selects/reports the setting of the decay rate for a specified input. Command form: DEVICE DECAY [Value] Argument details Name Device DECAY Channel Value Description 0–7 or * to select all units Command form Range 1–8 (selects mic input) 1 = Slow, 2 = Medium, 3 = Fast, Null to return current state Example: #53 DECAY 1 3 On XAP 800 unit 3 (#53), the decay rate (DECAY) for mic channel 1 is set to fast (3).
104 Appendices ~ Appendix E: Serial Commands DFLTM - Default Meter This command selects/reports the setting of the default meter.
105 Appendices ~ Appendix E: Serial Commands FILTER - Filter Adjust This command selects/reports the setting of filters.
106 Appendices ~ Appendix E: Serial Commands FILTSEL - Filter Select This command turns on and off the filters on input and audio processing channels.
107 Appendices ~ Appendix E: Serial Commands FPP - Front Panel Passcode This command sets and reports the current passcode setting for the unit. Each character in the password represents a button on the front panel. See button assignment table below. When the user is requested to unlock the front panel, they must press the buttons in the sequence of the stored password.
108 Appendices ~ Appendix E: Serial Commands GATE - Gate Status This command reports the gate status of mics.This command is read only. Command form: DEVICE GATE Argument details Name Device GATE Description 0–7 or * to select all units Command form The command will return the gate status of mic inputs 1–8 in hexadecimal.
Appendices ~ Appendix E: Serial Commands GMODE - Gating Mode This command selects/reports the setting of gating mode. Command form: DEVICE GMODE [Value] Argument details Name Device GMODE Channel Value Description 0–7 or * to select all units Command form 1–8 (select mic input) 1 = auto, 2 = manual on, 3 = manual off, Null= current mode Example: #55 GMODE 1 2 On XAP 800 unit 5 (#55), mic channel 1 is set to a gating mode (GMODE) if manual on (2).
110 ✍ Gate report sends a report on every gate change. If no mics are gated on, the report will be sent every 10 seconds. Appendices ~ Appendix E: Serial Commands GREPORT - Gate Report This command selects/reports the gate status. Command form: DEVICE GREPORT Argument details Name Device GREPORT Value Description 0–7 or * to select all units Command form 0 = Off, 1 = On, 2 = Toggle Example: #53 GREPORT 1 On XAP 800 unit 3 (#53), the gate reporting (GREPORT) is set to on (1).
Appendices ~ Appendix E: Serial Commands LFP - Lock Front Panel This command sets and reports front panel access for the unit. When the unit is locked, access is not allowed to the unit until the unit is unlocked. Command form: DEVICE LFP [Value] Argument details Name Device LFP Value Description 0–7 or * to select all units Command form 0 = Unlock Panel, 1 = Lock Panel, 2 = Toggle Value, 3 = Lock when timed out Example: #54 LFP 1 The XAP 800 unit 4 (#54), front panel (LFP) is locked (1).
112 Appendices ~ Appendix E: Serial Commands LOCKPRST - Apply the lock to a preset or macro Selects/reports whether the lock is applied to a preset/macro. If a preset/macro has the lock applied, it can only be changed if unlocked with the password.
113 Appendices ~ Appendix E: Serial Commands LVLREPORT - Level Report This command selects level status reporting.
114 Appendices ~ Appendix E: Serial Commands ✍ The response indicates execution of the macro, but does not indicate that each command within the macro was executed. MACRO - Macro Execution/Reporting This command executes a specified macro or reports the last macro executed.There are 255 macros that can be specified.
115 Appendices ~ Appendix E: Serial Commands MDMODE - Modem Mode This command enables or disables the modem mode for the unit. When the modem mode is enabled, the modem initialization string is sent out the serial port and the serial port now requires a password before a command is processed. After five minutes of serial inactivity the passcode will be requested to continue serial activity.
116 Appendices ~ Appendix E: Serial Commands MINIT - Modem Initialization String This command sets/reports the modem initialization string of the serial port when in modem mode.
117 Appendices ~ Appendix E: Serial Commands MLINE - Mic/Line Adjust This command selects/reports the setting of coarse gain adjustment on the input channels 1-8.The three settings are 0dB, 25dB, and 55dB.
118 ✍ Appendices ~ Appendix E: Serial Commands SRC = source DEST = destination CHNL = channel GRP = group MTRX - Matrix This command selects/reports the matrix routing of an input to an output.
119 Appendices ~ Appendix E: Serial Commands MUTE - Mute This command selects/reports the setting of mute on input, output or processing channels. Command form: DEVICE MUTE [Value] Argument details Name Device MUTE Channel Group Value Description 0–7 or * to select all units Command form See Groups and Channels, page 97 I, O, M, P, L 0 = Off, 1 = On, 2 = Toggle, Null = current mode Example: #51 MUTE 2 M 1 On XAP 800 unit 1 (#51), the mute (MUTE) for mic (M) channel 2 is on (1).
120 ✍ Appendices ~ Appendix E: Serial Commands This setting is not affected by the echo canceller settings. NLP - Non-Linear Processing Adjust This command selects/reports the setting of the Non-linear processing for each microphone channel.
Appendices ~ Appendix E: Serial Commands PAA - PA Adaptive Mode This command selects/reports PA adaptive mode for the specified mixer.There can be only one selection per mixer. Command form: DEVICE PAA [Value] Argument details Name Device PAA Channel Value Description Units 0–7 or * to select all units Command 1–8 (select mic input) 0 = Off, 1 = On, 2 = Toggle, Null = Current mode Example: #57 PAA 1 0 On XAP 800 unit 7 (#57), the PA adaptive mode (PAA) on mic channel 1 is disabled (0).
122 Appendices ~ Appendix E: Serial Commands PRGSTRING - Program String This command sets/reports a programmed string. Command form: DEVICE PRGSTRING [Value] Argument details Name Device PRGSTRING ID Value Description 0–7 or * to select all units Command 0 – 7 (string location) 1–80 Characters CLEAR = Clear current value Null = Current value Example: #53 PRGSTRING 2 MUTE On XAP 800 unit 3 (#53), string location 2 is programmed (PRGSTRING) with MUTE.
Appendices ~ Appendix E: Serial Commands RAMP – Ramp Gain Adjustment This command starts/stops the gain ramp for an input, output, or assignable processing block.There is no query for this command. Command form: DEVICE RAMP [Target] Argument details Name Device RAMP Channel Group Rate Description Unit 0–7 or * to select all units Command See Groups and Channels, page 97 I, O, M, L, P,T, R (1, 2, 3, 5, 16, 17) -50 to 50 dB/s If value = 0.
124 Appendices ~ Appendix E: Serial Commands REFSET - Reference channel setup This command selects/reports the output the reference channel tracks.
Appendices ~ Appendix E: Serial Commands SFTYMUTE - Safety mute Selects/reports the state of the safety mute. When on, the safety mute holds all outputs on the selected unit in a muted state. It is used primarily for troubleshooting G-Ware.
126 Appendices ~ Appendix E: Serial Commands SIGTOUT - Signal Generator Time Out Sets the signal generator time out for the unit. Command form: DEVICE SIGTOUT [Value] Argument details Name Device SIGGEN Value Description 0–7 or * to select all units Command 0 = Off, 1–30 = Set time out minutes, Null = Current rate Example: #57 SIGTOUT 15 On XAP 800 unit 7 (#57), the signal generator time out (SIGTOUT) is set to 15 minutes.
127 Appendices ~ Appendix E: Serial Commands TOUT - Time Out Select This command selects/reports the inactivity time out before returning to the unit title screen. Command form: DEVICE TOUT [Value] Argument details Name Device TOUT Value Description 0–7 or * to select all units Command 0 = Off, 1–15 (select time out in minutes) Null = Current mode Example: #52 TOUT 5 On XAP 800 unit 2 (#52), the front panel of the unit will time out (TOUT) after 5 minutes.
128 Appendices ~ Appendix F: Warranty Appendix F: Warranty ClearOne Communications, Inc. (Manufacturer) warrants that this product is free of defects in both materials and workmanship. For full warranty information and coverage, refer to the ClearOne website at www.clearone.com.
Appendices ~ Appendix F: Warranty Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 129
130 Appendices ~ Appendix G: Compliance Appendix G: FCC Part 15 Compliance This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Glossary Glossary Acoustic Echo Cancellation (AEC) A process in which acoustical echo is removed from a signal. AEC can be used to remove unwanted signals from mic audio if the unwanted acoustic signal is available separately as an electronic signal. Adaptive Ambient This portion of the mixer monitors the varying ambient noise level in the room and changes the threshold level at which a microphone gates on. Ambient Level The manually-set background noise level upon which the XAP 800 bases gating protocols.
132 Glossary Chairman Override Provides gating priority for chairman override enabled microphones within the same gating group. When a mic with chairman override gates on, all mics which don’t have chairman override enabled and are in the same gating group will gate off. Clipping A condition in which a signal level exceeds the maximum level a circuit can handle.This is usually caused by improper gating parameters and gain settings.
Glossary Cross point The intersection between an input and an output in the routing matrix. Cross point cells are colored according to input type. Cross point attenuation The process of attenuating audio level at the cross point. Audio can be attenuated from 0 to 60dB. Decay Rate (slow, medium, fast) Determines how fast a channel gates off after hold time expires. Default is medium.
134 Glossary Filter A device that passes and blocks audio signals based on user-definable requirements of the system. • All Pass A filter that provides only phase shift or phase delay without appreciably changing the magnitude characteristic. The filter produces a flat amplitude response. It is useful for matching the delay of two processing channels with different delays. • High Pass A filter that passes high signal frequencies while attenuating low frequencies.
Glossary Gate The activation and deactivation of microphones. • Auto The microphone will gate on according to the input level, assigned gating parmeters, and gating group. • Manual On The microphone will gate on unless it exceeds the NOM requirements of the gating group. • Manual Off The microphone is deactivated. Gate Ratio Specifies how much louder the microphone audio level must be above the ambient sound level before a microphone gates on.
136 Glossary Matrix Mixer A mixer that allows routing of any input or combination of inputs to an output or any combination of outputs. In the case of the XAP 800, the matrix mixer permits level control at each cross point in the matrix. Matrix Screen The Matrix Screen facilitates the routing of any input to any output or combination of outputs. Maximum Number of Mics Sets the maximum number of mics that can be gated on simultaneously. Microphone Activation A condition in which a microphone is gated on.
Glossary Off Attenuation The amount of level reduction a microphone is given when the microphone is not gated on. PA Adaptive Mode The XAP 800 recognizes how much loudspeaker audio is picked up by the microphones and then uses this level as the new ambient level when audio is present at the power amplifier.This prevents loudspeaker audio from gating on a microphone, while still allowing people in the room to gate on microphones as they speak.
138 Glossary Phase Plot A plot of phase angle (-180 to 180 degrees) vs. frequency (20Hz to 20kHz) on a logarithmic scale. Pink Noise An audio test signal containing all the frequencies in a given audio spectrum, with equal energy in each octave. Preset One of 32 configurable memories in the XAP 800. A preset can be programmed with a variety of routing, level, gating, delay, filter, and equalizer settings to meet specific application requirements.
Glossary Signal Delay Used for: • Compensating for physical placement of multiple drivers in a cluster—to align points of acoustic origin in the same plane. • Ensure matching arrival times at listeners from multiple loudspeaker drivers. • Using the Haas effect to maintain localization of the source, even with a distributed system. Signal Generator A device for generating a reference tone for sound system calibration purposes.
140 Index Index A acoustic echo cancellation 33–35, 40, 99, 131 echo return loss (ERL) 35 echo return loss enhancement (ERLE) 35 non-linear processing (NLP) 35 AEC settings 33–35 total echo reduction 35 adaptive ambient 38, 39, 86, 99, 131 add unit 24 AEC see acoustic echo cancellation AEC reference 7, 33, 38, 40 AGC see automatic gain control ALC see automatic level control All Pass 36, 51, 85, 86, 105, 134 ambient level 38–39, 42, 200, 131 ambient noise 35, 38, 131 attack time see Compressor audio rout
141 Index network 6, 11, 115 reference 33, 40, 58, 123 routing to 29, 30 Expansion Bus In/Out 5, 11, 85 H High Pass 36, 51, 85, 86, 105, 134 hold time 39, 108, 135 I F File Access Password 23 filter 35–37, 51–53, 105, 106, 134 First Mic Priority 42, 85, 106, 134 floppy disk 22 flow control 15, 23, 25, 85, 106, 134 Flow Screen 27, 30 front panel control 4, 60 see also LCD menu front panel passcode 15 G G-Ware 22 installation 22 Program Folder 22 G-Ware Switcher 74 gain structure 43, 45, 47, 54, 135 Gate
142 Index master setting 12, 15, 114 Matrix Screen 27–32, 136 Message Log 28, 75 meter 4 Meter menu 16 Default Meter 18 ERL 17 ERLE 17 Inputs 17 Outputs 17 Processing 17 Meter reference 19 Meter View 76 Meters 43 post gain 43 post gating 43 post processing 43 pre pain 43 Min/Max limits 42 mixer mode 9, 12, 14, 15, 136 modem 15, 16, 23, 26, 82, 87, 97, 115, 117 modem access 82 password 82 N NLP see non-linear processing noise cancellation 35, 85, 119, 136 NOM 30, 38, 46, 47, 120, 136 non-gated 5, 29, 30, 4
143 Index phase 52 mute 49 propagation 6, 54 R Ramp 123 release time 102, 138 Remote Builder 27, 78–82 Remote Panel 6, 10, 57, 90, 91–92 response time 33, 100 see also automatic gain System menu 14 Device ID 15 Firmware Version 15 Lock Panel 14 Run Macro 14 Select Preset 14 Set Passcode 15 Unit ID 15 system requirements 21 S–Z 6, 7, 30, 158 control RJ-45 jumper 11 room combining 5, 60–62, 63 routing matrix 29, 30, 34, 40, 56 RS-232 10, 11, 12, 82, 83, 87, 101, 124 T target level 33 threshold 33, 38–39
