™ FDS-366T OMNIDRIVE User Manual Connect here first...
FDS-366T ZM10019 issue 4 CB/PW/DN/DP/JWK Software version 2.00 IMPORTANT SAFETY INFORMATION DO NOT REMOVE COVERS. NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. THIS EQUIPMENT MUST BE EARTHED. IT SHOULD NOT BE NECESSARY TO REMOVE ANY PROTECTIVE EARTH OR SIGNAL CABLE SHIELD CONNECTIONS TO PREVENT GROUND LOOPS. ANY SUCH DISCONNECTIONS ARE OUTSIDE THE RECOMMENDED PRACTISE OF BSS AUDIO AND WILL RENDER ANY EMC OR SAFETY CERTIFICATION VOID.
FDS-366T Contents FDS-366T Omnidrive compact plus 1.0 Primary Checks ......................................................................................... 8 2.0 Installation ................................................................................................. 8 3.0 Warranty Information ............................................................................... 9 About the FDS-366T Omnidrive Compact Plus ............................... 10 4.0 Introduction ...............................
FDS-366T Unbalanced wiring ............................................................................................................. 34 MIDI ................................................................................................................................... 35 RS232 Serial ....................................................................................................................... 35 RS485 Serial ..................................................................................
FDS-366T 18.0 Utilities .................................................................................................. 53 1. Configuration.................................................................................................................. 54 2. Stereo Link ...................................................................................................................... 54 3. Sum Type.......................................................................................................
FDS-366T 4. Dynamic EQ ................................................................................................................... 72 1. Gain ............................................................................................................................... 72 DEQ ................................................................................................................................... 73 Thr (Threshold) ...........................................................................
FDS-366T Reference Section ........................................................................... 86 21.0 Serial Communications ......................................................................... 87 MIDI ................................................................................................................................... 87 MIDI with PC Control.......................................................................................................... 88 Synchronous Control ...........
FDS-366T 1.0 ✓ Primary Checks As part of BSS' system of quality control, this product is carefully inspected before packing to ensure flawless appearance. After unpacking the unit, please inspect for any physical damage and retain the shipping carton and ALL relevant packing materials for use should the unit need returning. In the event that damage has occurred, please notify your dealer immediately, so that a written claim to cover the damages can be initiated.
FDS-366T 3.0 Warranty Information ✍ When sold to an end user by BSS Audio or a BSS Audio Authorised Reseller, this unit is warranted by the seller to the purchaser against defects in workmanship and the materials used in its manufacture for a period of one year from the date of sale. Faults arising from misuse, unauthorised modifications or accidents are not covered under this warranty. No other warranty is expressed or implied.
FDS-366T About the FDS-366T Omnidrive Compact Plus - 10 -
FDS-366T 4.0 Introduction Introducing the BSS Audio FDS-366T Omndrive Compact Plus, an incredibly powerful loudspeaker management system in only 1U of rackspace! Based on BSS Audio's many years of experience building analogue processing devices for the live sound and installed markets, the FDS-366T Omnidrive is an 'all in one' solution for system crossover assignment, EQ, delay and dynamics control.
FDS-366T 5.0 Features ✓ ✓ Individual keys to select input and output channels for editing. ✓ ✓ ✓ Comprehensive output limiters on each band (mid-filter). Crossover slopes of 6,12, 18, 24 or 48dB per octave. Filter types:Butterworth, Bessel, Linkwitz-Riley and WHISEWORKSNTM*. Equalisers and 'dynamic' equalisers on each input and output. High resolution input and output delays up to 2.6 seconds in approximately 11 microsecond steps.
FDS-366T Features Some of the features are explained in greater detail here. • 96kHz Sample rate The FDS-366T operates the A-D and D-A converters and the Digital Signal Processing (DSP) at a sample rate of 96kHz. The use of a higher Nyquist frequency enables the audio bandwidth to extend all the way up to 40kHz. With this extra frequency response we have also been able to incorporate more accurate filter sets for a more natural, open sound.
FDS-366T Features • Alignment Assistant The Alignment Assistant is an advanced loudspeaker measurement function built-in to the FDS-366T for directly measuring the delay and phase relationships between drivers (using a measurement microphone), and automatically adjusting the settings to accommodate these.
FDS-366T Features • Safe mode The FDS-366T has a hidden function called 'Safe'. 'Safe' mode is intended to be used as a complete lock-out for installations or as the ultimate protection for hire systems etc. When SAFE mode is switched on, all controls are disabled, the screen blanks and the backlight is dimmed. The input and output meters will still display the existence of signal being processed through the unit but no one can change any values within the unit.
FDS-366T 6.0 Typical Applications j The FDS-366T has three inputs: A, B, C. An internal mono sum of inputs is also available for routing to any of the outputs. Many combination of routing inputs to outputs is available, and the FDS-366T can be configured as a stereo or mono device. The basic configurations are selected in the Utilities and the following examples are based upon these as possible likely setups. Stereo 3-Way with mono sub-bass. Systems can be run in one of two stereo 3-way modes.
FDS-366T j Typical Applications Triple Bi-amp (Stage monitors) The FDS-366T can provide 3 channels of bi-amp crossover for monitor racks with EQ, delays, and limiters. With so much EQ available in the FDS-366T, it is easy to assign 12 bands of EQ to the input, as well as EQ to the output bands, saving the need for external EQ. In LHLHLH mode by default, input A feeds outputs 1 and 2, input B feeds outputs 3 and 4, and input C feeds outputs 5 and 6.
FDS-366T j Typical Applications Mono 6-way In the mono mode, the FDS-366T can provide a full 6-way system. It can also function as a 5-way system fed from input A, with an independent sub-bass output fed from the sum of inputs A & B or input C. Stereo 6-way (example) Two FDS-366Ts working in this mode can form a stereo 6-way system. For example purposes only, in the diagram below the first FDS-366T is running a 5 way system with the mono sub bass derived from the sum of inputs A and B.
FDS-366T 7.0 Crossover Shapes and Frequencies It is not possible to provide one loudspeaker driver to cover all audible frequencies. Even if the frequency response could be achieved, the large size of the driver required to shift enough air at low frequencies would offer an impossibly directional beam at high frequencies because at small wavelengths, the differing path lengths from the extremities of the diaphragm to the listener would cause cancellations off-axis.
FDS-366T Crossover Shapes and Frequencies The graphs on this page show the filter slope curves with associated crossover points in order to aid the sound technician in the choice of filter shape to use for the desired result between speaker drivers of differing specifications and characteristics. 5.0000 Linkwitz-Riley 12, 24 & 48dB/Octave Slopes. For many years Linkwitz-Riley crossovers have been the 'industry standard' as they offered the best compromise between the parameters discussed earlier.
FDS-366T Crossover Shapes and Frequencies WHISEWORKS-NTM Crossover The WHISEWORKS-Neville Thiele Method (NTM) crossover filter is a new type of electrical/acoustical filter offering significant performance advantages over all previous crossover filter types in audio applications. The filter was developed by Neville Thiele (pronounced “Teel”). This filter uses a unique notched response to achieve a very steep roll-off rate outside the passband.
FDS-366T Crossover Shapes and Frequencies Crossover comparison chart Key: = Worst • ••••••= Best BUT = Butterworth BES = Bessel L-R = Linkwitz-Riley NTM = Neville Thiele Method Below is a chart comparing the different crossover filter types that are provided in the FDS-366T Omnidrive. This table should help to ascertain the particular choice of filter dependant on application. Shapes marked with an asterisk * will require polarity inversion.
FDS-366T Crossover Shapes and Frequencies Phase Compensation Phase compensation to active crossovers was introduced in the classic FDS355 Omnidrive Compact Loudspeaker Management System. The FDS-366T Omnidrive includes this feature, freeing the user of worry about phase alignment between bands. More info about Phase Compensation: A properly designed 2 way crossover always exhibits the inter-band phase relationships that are characteristic of the chosen crossover shape.
FDS-366T 8.0 Dynamic Equalisation What is DEQ? The BSS DPR-901 Analogue Dynamic Equaliser was a revolutionary way of dealing with equalisation, and was made possible by the subtractive progressive knee technique developed for the industry-standard DPR-402 Analogue Compressor. The very same techniques are used in the FDS-366T to give you dynamic control of equalisation, or indeed for conventional full-range compression on every input and every output.
FDS-366T Dynamic Equalisation Notes and Uses Frequency selective compressing Conventional compressors affect the whole audible band of frequencies equally. Some compressors can be configured to only start compression when they encounter given frequencies, however, once they start compressing they compress the whole audio band. This is quite distinct from the type of compression available in the FDS-366T DEQ.
FDS-366T Dynamic Equalisation Dynamic bass and treble enhancement The bass and treble content of the program can be made to appear louder without increasing the overall sound level if the middle frequencies of the program are reduced when the sound level approaches the limit. This can be especially useful to squeeze the last few dB of perceived headroom out of a PA.
FDS-366T The Rear Panel and Connections - 27 -
FDS-366T 9.0 Rear panel A Mains power input The power inlet for the FDS-366T. Note that there is no On/Off switch for the unit. Accepted voltage range: 90-240V AC 50/60Hz, autosensing. B Fuse In the event of failure due to mains overload only replace with T1A fuse as stated on the unit. C,D RS-485 connectors Serial connection to a PC on a multi-drop network. E RS-232 connector Serial connection to either a PC or to connect to another FDS-366T. Provides an easy way to upload new software.
FDS-366T 10.0 Connections - Mains Power Mains Power , IMPORTANT: The wires in the mains lead are colour coded in accordance with the following code.
FDS-366T Connections - Mains Power AC Power fusing , The incoming mains power is protected within the FDS-366T by a fuse in the holder mounted on the rear panel. In the event that a mains fault occurs and blows this fuse always replace with an identical 20mm x 5mm 'T' fuse, rated at 1A for continued protection from equipment damage and fire. Spare fuses of the correct rating are supplied with the unit. It is most important for continued safety that this specification is strictly adhered to.
FDS-366T Connections - Audio Audio The FDS-366T has three balanced Inputs and six balanced Outputs that can accommodate both balanced and unbalanced signals. Note: Because the FDS-366T outputs can be programmed for any passband, caution must be taken when connecting the outputs to the amplifiers. The connection of low frequency signals to high frequency drivers could cause serious damage - this is not covered by warranty. Please check your wiring before using the Omnidrive.
FDS-366T Connections - Audio Unbalanced wiring A fully balanced system will yield the best possible results with none of the problems often associated with interconnected audio equipment. However, if the equipment driving the FDS-366T has only unbalanced outputs then the input plug to the FDS-366T should be wired so that the shield connection on pin 1 is shorted to either pin 2 or pin 3, depending on the wiring convention of the unbalanced equipment at the sending end.
FDS-366T Connections - Serial Controller Connections MIDI RS232 Serial Standard 5 pin DIN MIDI In and Out jacks are located on the back panel. These allow remote program recall, parallel control and MIDI systems exclusive dump capability. Standard 5 pin din MIDI cables should be used. An RS-232 connector allows updating of the flash memory via a PC (as system firmware updates become available - check our website, www.bss.co.
FDS-366T Connections - Program Select Port Program Select Port The program select port can be used for external selection of the first 8 programs stored in the unit. Short the appropriate pin on the program Select port to pin 9 to recall the program. This port uses 'negative edge swtiching' which means that a voltage drop activates the program change. Momentary switches are best used to trigger the program changes. For example, to recall program 6, short pin 6 to pin 9.
FDS-366T Using the FDS-366T Omnidrive Compact Plus - 35 -
FDS-366T 11.0 Front Panel A STORE /ENTER key Program data can be stored to either internal memory, or a PC card, and is done by using the store facility. This key also doubles as an ENTER key for confirmation of some programming actions. B RECALL key Program data can be recalled to the unit from either internal memory or a PC card using the recall facility. C Navipad 4-way control key for selecting parameters displayed by the LCD screen.
FDS-366T Front Panel H SUM button Quick access to the Input Sum parameter screens. J PC card slot The card slot is used for storing/recalling program data via a standard type 2 PC card. Note that the card only inserts up to about a third of its length. K Mute button Pressing a mute button will toggle the associated band output on and off. The mute button is illuminated red when the output is MUTED. Mute status is saved when a program is stored.
FDS-366T ` 12.0 Navigation The Navipad The Navipad To the left of the display screen there is a four way rocker selector switch. This enables navigation through the various screens and to both select a parameter to adjust (^/v) and to fine adjust the value of the currently selected parameter (< and >). Where the parameter is non-numeric these keys scroll through a list of options.
FDS-366T 13.0 Default Screen Unsaved changes flag T Program number and name Owner Lock Output band curves On powering up, the FDS-366T performs internal checks and sets up the audio path before releasing the output mute relays. This takes a few seconds. During this time the operating software version will briefly be displayed. When the FDS-366T is fully powered up the 'default' screen is shown, this gives a representation of the current state of the unit.
FDS-366T 14.0 Quick Start Guide i This section describes how to get started using the FDS-366T Omnidrive. If you are unsure about how to use this product please take the time to study this manual before attempting to deploy the unit in earnest. The FDS-366T is a very capable device and as such, knowledge of both audio sound systems and the way that the Omnidrive integrates with them is required, especially to achieve the best results.
FDS-366T Quick Start Guide Getting going with a preconfigured program T • Program recall If the FDS-366T has already been configured with a suitable program, you only need to use the recall mode to set the parameters to that program. ! Be aware that different programs may contain inappropriate routings and EQ/Limiter settings for your particular system so care should be exercised when selecting the correct program. Press RECALL.
FDS-366T Quick Start Guide Setting up a system The overall configuration of the FDS-366T is the first parameter that needs to be set. Decide whether the unit needs to run as a stereo 3 way, mono up to 6 way or as a 3 channel 2 way device.
FDS-366T Quick Start Guide Use the navipad ^/v keys to select the delay screen. The delay is adjusted using the rotary encoder. Default settings for display and adjustment of delay is in meters (m), but can be changed to milliseconds (ms), feet/inches (ft) or frames per second (fps) using the "Delay Units" parameter in the Utilities. Bands can also be linked so multiple outputs can be delayed as one using the "Delay Link" facility. • Adding EQ Use the navipad ^/v keys to move to the EQ screen.
FDS-366T Quick Start Guide When you have set up the Omnidrive it is essential to store your settings so that they can be recalled should the power be removed from the unit. Press the STORE button to enter the store mode. Select an unused program location from the list, the Omnidrive will move the cursor to the naming area of the screen. Input an appropriate name for your settings using the rotary encoder to change the characters and the navipad keys to move along the naming area.
FDS-366T 15.0 Quick Reference - How to ... Use delays for driver alignment The best way to do this is to have a good idea of the physical positions of the voice coils of the drivers in the cabinet. If you do not know this, an estimate can be made, but it may take a while longer. For example consider a 3-way box; with a 12” direct radiator, a 2” horn with a compression driver, and a 1” bullet.
FDS-366T Quick Reference - How to ... Make a band full range The 'Xover Adjust' must be changed from "Both" to "Edge" in the Utilities. Pressing UTILS while in a crossover edit screen will select 'Xover Adjust'. 1 2 3 4 5 Add EQ for Constant Directivity horns Constant Directivity horns often require additional equalisation in order to extend their frequency response. In most cases, this is a fairly simple EQ, requiring only a gentle slope (6dB per octave) high-pass shelving filter.
FDS-366T Programming functions in depth - 47 -
FDS-366T 16.0 Program Functions The FDS-366T has 60 internal program memories which should be plenty of storage space for most applications. However it is always good practice to back up your programming work and this can be achieved in several ways. Programs can be saved to a PC card (refer to the next chapter for more information on the use of PC cards) or 'dumped' via MIDI into either another FDS-366T or a computer/midi data storage medium for later recall.
FDS-366T Program Functions Storing a Program STORE type Program Lock status Owner locked Program OEM locked Program OEM & Owner locked Program Program number Program Name Familiarise yourself with the method for storing programs as this must be done to memorise any editing that you may have done to your system set up. Program lock • Pressing the STORE key will access the Store screen.
FDS-366T Program Functions Store Type There are 3 ways in which data can be stored, and these are indicated by the store type message at the top of the display. To highlight the Store type message, use the navipad 'v' key while a program number is highlighted. Once highlighted, turn the rotary encoder to select the type of store you wish to use. INT This stores the program in the internal memory of the unit.
FDS-366T Program Functions Delete Program To delete a program press the UTILS button and scroll through the options until the screen on the left is displayed. To enter the Delete Program mode, press either > or turn the encoder clockwise, this will change the screen to: Choose the program to be deleted using the < and > keys or rotary control. Press ENTER to delete the program. Pressing the ^/v keys at any time will exit the Delete Program mode.
FDS-366T 17.0 PC Card Usage Card types Compatible Cards Storage life The program memories of the FDS-366T Omnidrive can be saved to PC cards for further storage, safety backup and portability between systems. Note that the PC card only inserts up to about a third of its length into the front panel slot. Do not try to force the card further in as this could cause damage to the unit.
FDS-366T PC Card Usage Computer compatibility : FDS-355 compatibility BSS has tested and developed the card filing system using an IBM compatible PC card reader and a range of palm-top computers, but cannot guarantee that the cards can be read by any particular piece of computer equipment. To transfer files to and from an external computer note the following: • Format the card on the computer. • Write a sub-directory called BSSDATA into the root directory immediately after formatting the card.
FDS-366T 18.0 Utilities Introduction The Utilities contain settings for the FDS-366T that are of a more general operational nature, rather than particularly related to the individual function of the input and output channels. Pressing the UTILS button or pushing the navipad '^' key while viewing the 'default' screen will display the Utilities menu.
FDS-366T Utilities - Configuration & Routing 1. Configuration "Mono", "LMHLMH", "LLMMHH" or "LHLHLH" Configuration defines the general operating mode for the FDS-366T; either Mono, Dual/Stereo 2-Way or Stereo 3-way. The rotary encoder is used to select the desired configuration. 2. Stereo Link • "Mono" mode assigns all outputs from input A. • Stereo "LMHLMH" mode routes input A to outputs 1, 2 & 3 and input B to outputs 4, 5 & 6.
FDS-366T Utilities - Crossover Adjustment/Phase Comp 4. Xover Adjust "Both" or "Edge" The Xover Adjust determines how crossover points are adjusted relative to the corresponding edge of the adjacent band. The following options may be selected: BOTH When set to BOTH, both the upper band edge of the lower band and the lower band edge of the upper band are adjusted as a pair.
FDS-366T Utilities - Alignment Assistant 6. Alignment Assistant The Alignment Assistant is an advanced loudspeaker measurement function built-in to the FDS-366T for directly measuring the delay and phase relationships between drivers (using a measurement microphone), and automatically adjusting the settings to accommodate these.
FDS-366T Utilities - Alignment Assistant Procedure The alignment assistant takes you step-by-step through the various stages of the process starting with the "SELECT OPTIONS" screen. Determine which parameters are to be measured and adjusted. • Output Delays are used for correcting for discrepancies in distance or phase between adjacent drivers in a cabinet or stack. • Input Delays are used for aligning cabinets with one another. • Polarities will correct driver polarities.
FDS-366T Utilities - Alignment Assistant Adjusting the stimulus level As you increase the stimulus level, the microphone amplifier in the FDS-366T will automatically adjust it’s gain to try to obtain a good level. You may therefore not see the input C bargraph value changing once it gets close to fullscale. If the input level is reasonable and the outputs are not limiting or clipping then start the automated measurement phase by pressing the ENTER button.
FDS-366T Utilities - Alignment Assistant Notes 1. Which parameters get overwritten? Some parameters get overwritten by running Alignment Assistant. If you have valuable settings in place it is recommended that you save the current setup to a new program location before activating Alignment Assistant.
FDS-366T Utilities - Alignment Assistant 5. Accuracy It is difficult to predict accuracy but, under the correct conditions the Alignment Assistant will be more than adequate for aligning drivers to within a few degrees. Very low frequency bands are often aligned less accurately in terms of time, because of the poor stimulus bandwidth, but will be more than adequate in terms of phase angle.
FDS-366T Utilities - Adjustments, Units and Screen 7. Delay Corrn (Correction) "Off", "Manual" or "MIDI" Corrects the implementation of delay in the unit to compensate for ambient temperature. This facility works in tandem with the Temperature utility. With Delay Corrn (correction) set to 'Off', the default temperature is set to 20°C. Setting Delay Corrn to "Manual" allows a user defined value to be entered, from -20°C to 50°C, in 1°C increments.
FDS-366T Utilities - Security Lock Outs Any changes made to an audio system have the potential to be damaging, even if only accidentally made. For this reason several different security systems are built in to the FDS-366T to protect the system. The security levels offered by the FDS-366T enable the various functional aspects of the Omnidrive to be secured away from accidental or malicious adjustment.
FDS-366T Utilities - Security Lock Outs - Owner lock Setting up 'Owner' Locks 1. To activate the Owner Lock go to the Utilities, select "Owner Lock" and turn the rotary encoder clockwise. 2. Enter the default password, which is "OMNI" for Owner Lock, by turning the rotary encoder to change the displayed character, and then either pressing the navipad > key or pushing the rotary encoder to move along the password. The use of a default password is to prevent accidental or malicious setting of lock flags.
FDS-366T Utilities - Security Lock Outs - Owner lock Storing Owner Programs To store a program as an 'Owner' program, the unit must be in Owner Lock setup mode when the program is stored, otherwise the stored program will not be identified as an Owner program in the program list. So as soon as the last set of locks have been applied and STORE/ENTER has been pressed to confirm the selection press STORE again and save the program.
FDS-366T Utilities - Security Lock Outs - OEM lock 15. OEM Lock "Off or "Active" The OEM Lock mode gives the user the ability to hide selected parameters from other users' view and prevent those parameters from being tampered with. OEM Lock is the highest level of programmable security available to the FDS-366T.
FDS-366T Utilities - Security Lock Outs - OEM Lock ENTER key should be pressed again - prompting for the user password to be entered. At this point it is possible to change the existing default password to one of your choice - particularly recommended if the unit is to be hired out as the default password is the same on all FDS-366Ts. Note that the password is alphabetical only. 9. Storing OEM Programs Press the STORE/ENTER key a final time to exit OEM Lock setup mode, confirming the lock selections.
FDS-366T Utilities - Security Lock Outs - Notes OEM & Owner Locks Configuration parameter note Lockable Utilities If a program has both OEM and Owner Locks applied to it a combination symbol, i.e. diamond and padlock, will denote the common parameters. Any such programs will be displayed with this symbol in the STORE, RECALL and default screens. When the Configuration parameter is locked by either OEM or Owner locks it is displayed with the appropriate lock symbol during the lock setup mode.
FDS-366T Utilities - Input modes and MIDI 16. Input A/AES "Analogue" or "AES" Select whether the input A socket is to accept either conventional Analogue input or AES (AES/EBU) digital input. In the latter case it will be used as the source of channels A & B for routing in the unit. 17. Serial Port "RS232" or "RS485" Selects whether serial communications is using RS485 or RS232 to transceive program and/or control data. See the 'Serial Communications' section for more details. 18.
FDS-366T Utilities - MIDI 19. MIDI Channel 1-16 Select the MIDI channel that the unit is assigned to (standard MIDI channels 1 through 16 are available). In order to communicate effectively with other Omnidrives connected on the same MIDI network all units that require synchronisation for program changes and control must be on the same MIDI channel.
FDS-366T Utilities - Program Functions 21. Backup & Swap "On" or "Off" Defaults to 'Off'. Often known as Edit/Compare in other systems. This function allows the user to make adjustments to a setup, and then compare the changes to the original setup. With this facility turned 'On', the STORE and RECALL buttons are reprogrammed to perform 'backup' and 'swap' respectively. Pressing the STORE (Backup) button will copy the current setup to the internal clipboard.
FDS-366T 19.0 Input Channels There are three inputs available for routing to the outputs, plus an internal mono sum of inputs. The input channels are: A, B, C and Sum. Any input can be routed to any output, particularly in the 'Mono' configuration mode however, in the stereo configuration modes inputs A&B are usually the stereo pair and input C can be used as a separate feed for mono sources, e.g. a sub bass feed or in LCR applications (as the centre channel).
FDS-366T Input Channels - Screen Explanations 1. Gain -15.0dB to +15.0dB in 0.1dB steps To adjust the relative gain of the input channel, turn the rotary encoder to achieve the desired gain. 2. Delay Adjustable in ms, m, ft and fps The delay on each input channel can be adjusted individually, in approximately 11 microsecond steps. Turning the rotary encoder will set the amount of delay applied to the selected input. This delay is typically used to set the delay for delay towers etc.
FDS-366T Input Channels - DEQ Dynamics Screen The first EQ in each output can be programmed to work dynamically. The first DEQ screen sets up the parameters of the EQ's compressor; the EQ screen that follows sets the EQ parameters. DEQ "On" or "Off" Determines whether the Dynamic equaliser on this output channel is enabled for dynamic operation. When set to OFF, the equaliser will operate as a conventional equaliser.
FDS-366T Input Channels - DEQ Dynamics Screen one of the main reasons for the transparency and musicality of the DEQ at low compression ratios. Envelope shaping The Dynamic Equaliser has automated time constants which track both the nature of the programme, and the settings of the crossover filters and the Equaliser associated with DEQ. The user may however influence this automation using the Attack and Release parameters, which effectively scale the automatic parameters.
FDS-366T Inputs - EQ EQ adjustment screens The next screen following the DEQ dynamics settings is the EQ adjustment screen associated with the DEQ, this is represented by the DEQ logo in the top right of the display. This EQ should be set up to accomplish the dynamic EQ characteristics as required and is permanently wired into the channel, although its effect can be switched out with the EQ Bypass facility.
FDS-366T Inputs - EQ EQ shape The shape of the EQ can be selected from one of the following by turning the rotary encoder: Hi shelving with 12dB slope (Hi12) Hi shelving with 6dB slope (Hi6) BELL Low shelving with 6dB slope (Lo6) Low shelving with 12dB slope (Lo12). The EQ shape icon at the top of the screen will change, to show the type of EQ selected. 20.000 15.000 10.000 5.0000 20.000 0.0 15.000 -5.000 10.000 -10.00 5.0000 -15.00 0.0 -20.00 -5.000 20 100 -10.
FDS-366T Inputs - EQ Frequency "15Hz" to "16kHz" Turning the rotary encoder adjusts the EQ 'centre' frequency if a bell shape EQ is chosen and the -3dB points for the shelving EQs. The filter position is shown graphically by the cursor. Cut/Boost "-15dB" to "+15dB" in 0.2dB steps Turn the rotary encoder clockwise to add boost (+ gain) or anti-clockwise for cut (- gain) at the centre frequency chosen above. Width "0.05" to "3.00" Octaves in 0.
FDS-366T 20.0 Output Channels There are six output channels available for routing audio to the external system. The output channels are labelled 1-6 on the front of the unit. To select any one of the 6 output bands, either press the rotary encoder until the output is shown on the screen, or press the relevant assign key in the outputs area on the front panel. The assign button illuminates to show the output is selected.
FDS-366T Output Channels - Name & Source 1. Name 'Name' is the first screen in the Output menu. Here you can identify each output with a name suitable to its function, selecting from a list of preset names in the FDS-366T. Bands 1-6 L Low L Mid L High R Low R Mid R High C Low C Mid C High Subs Low Lo Mid Mid Hi Mid High Mid+Hi 2" Horn 1" Horn Bullet Flat Unused Bar BStage Delay Centre Mono Aux 10" 12" 15" 18" 21" 24" 1.5" Horn Delay1-6 Turn the rotary encoder to select the desired name.
FDS-366T Outputs - Crossover Settings 3. Low Shape This screen is used to select the filter shape/slope type for the lower band edge (high-pass) of the current output band. The band edge will be highlighted on the graphic on the screen. The higher the dB/Octave number the steeper the slope of the filter's rolloff, see the graphs on the preceding page for a more accurate representation of this concept. Generally shallower, i.e.
FDS-366T Outputs - Polarity, Phase & Gain 5. Phase o o 0-180 (degrees) in 5 steps The phase relationship of the two band edges at the crossover point can be adjusted in 5 degree steps using this function. The phase angle reference frequency is set by the high edge frequency so that this band controls the phase between the current band, and the band above it. Adjustments should therefore start with the highest band, and work downwards.
FDS-366T Outputs - Limiter 7. Limiter "On" or "Off" When the limiters are turned 'Off', the red 'OVER' indicator on the front panel meters will illuminate as a warning. NOTE: BSS Audio cannot accept any liability for any damage caused by disabling the protective limiters in the FDS-366T. This function is used totally at the discretion of the user. To enable the limiter switch the Limiter parameter to "On".
FDS-366T Outputs - Delay Delay link The Delay Link option allows control of several band delays with a single adjustment. This means that once all the drivers in a single cabinet have been aligned, the whole cabinet can be delayed relative to the input signal, or another cabinet, by linking these band delays as one. Any offsets applied before linking will be retained after linking. In the Delay Link screen, turn the rotary encoder until the desired linking configuration is shown.
FDS-366T Outputs - EQ/DEQ EQ Bypass "On" or "Bypass" An EQ bypass facility is now available. To switch out the effect of both the EQs and Dynamic EQ select "Bypass" in this screen. DEQ Dynamics Screen DEQ The first EQ in each output can be programmed to work dynamically. The first DEQ screen sets up the parameters of the EQs' compressor; the EQ screen that follows sets the EQ parameters. "On" or "Off" Determines whether the Dynamic equaliser on this output channel is enabled for dynamic operation.
FDS-366T Outputs - DEQ Dynamics Screen ratio control and low levels of compression, the transfer is soft. For high ratio settings and high levels of compression the transfer becomes harder. This ‘progressive knee’ gives inaudible compression for low levels of ratio and gain reduction, whilst allowing harder compression for limiting and extreme control when required.
FDS-366T Outputs - EQ EQ adjustment screens The next screen following the DEQ dynamics settings is the EQ adjustment screen associated with the DEQ, this is represented by the DEQ logo in the top right of the display. This EQ should be set up to accomplish the dynamic EQ characteristics as required and is permanently wired into the channel, although its effect can be switched out with the EQ Bypass facility.
FDS-366T Outputs - EQ EQ shape The shape of the EQ can be selected from one of the following by turning the rotary encoder: Hi shelving with 12dB slope (Hi12) Hi shelving with 6dB slope (Hi6) BELL Low shelving with 6dB slope (Lo6) Low shelving with 12dB slope (Lo12). The EQ shape icon at the top of the screen will change, to show the type of EQ selected.
FDS-366T Outputs - EQ Frequency "15Hz" to "16kHz" Turning the rotary encoder adjusts the EQ 'centre' frequency if a bell shape EQ is chosen and the -3dB points for the shelving EQs. The filter position is shown graphically by the cursor. Cut/Boost "-15dB" to "+15dB" in 0.2dB steps Turn the rotary encoder clockwise to add boost (+ gain) or anti-clockwise for cut (- gain) at the centre frequency chosen above. Width "0.05" to "3.00" Octaves in 0.
FDS-366T Reference Section - 90 -
FDS-366T 21.0 Serial Communications The FDS-366T is equipped with MIDI, RS232 and RS485 ports that allow it many capabilities in communicating with further FDS-366T units, other BSS products and computer based editing and control packages such as SIA's Smaart. This serial communications section describes how these ports can be used to transfer program changes, program data and control information between equipment in either single or multiple protocol combinations.
FDS-366T Serial Communications MIDI Synchronous Control When a MIDI Dump is undertaken between two, or more, FDS-366T units they become synchronised, i.e. the contents of each device's memory is identical. It is at this point, and this point only, that parallel parameter control of multiple units is achievable.
FDS-366T Serial Communications RS232 RS232 For situations where a MIDI interface is not available or it is difficult to fit a MIDI port, e.g. on a portable, then the FDS-366T's built in RS232 port can be used to connect directly to any PC with a standard 9 pin D type serial port. The cable from the first unit to the PC should be a null modem cable.
FDS-366T Serial Communications RS485 & Multidrop RS485 Unlike RS232, that can only work with two devices and with cable lengths of about 50 feet, or MIDI that has a similar cabling length restriction, RS485 can be used to set up 'multidrop' networks of units that are capable of communicating successfully over long distances - up to around 4000feet.
FDS-366T Serial Communications RS485 Note for older FDS-366 Omnidrives Older FDS-366 units are wired slightly differently with pin 1 being the unit ground. As the +5v bias is not connected in these units it is not possible to set up biasing for them. Biasing may still be applied by a newer unit in the network. Configuration Program changes, full memory dumps and synchronous control are all possible in a multidrop network of FDS-366Ts using RS485.
FDS-366T Serial Communications RS232 to RS485 Converters RS485 At the time of writing the FDS-366T Omnidrive is the only BSS unit to have built in RS485 support however, a multidrop system can be used with RS232 equipped devices, such as the FDS-355, Minidrive models or a PC, using RS232 to RS485 converters. Most RS232/RS485 converters can be run in either 2 or 4 wire mode. For use with an RS485 multidrop system across FDS-366T’s they only need to be set up in 2 wire mode.
FDS-366T Serial Communications Recommended converter - Patton Electronics Model 2089 The 2089f is manufactured by Patton Electronics - US +1 (301) 975-1000 and is a self-powered unit, i.e. no external transformer is needed and, can be used in 2 or 4 wire mode. It also has switchable 120Ω termination built in and does not require any soldering for connections.
FDS-366T 22.0 Troubleshooting Problem: Unit does not power up. Solution: Check power cable is inserted properly at back of unit. Check the fuse in the plug (if existing) on the power cable and/or try another power cable. Check mains supply is powered and operating at a voltage within the required range. Check the fuse at the rear of the unit has not blown. Problem: No output. Solution: Ensure mutes are not active. Check that gains are not turned down on the input or output channels.
FDS-366T 23.0 FDS-366T Omnidrive MIDI Implementation V1.0 1 June 1999 A.
FDS-366T 24.0 Default Configuration Settings MONO OUT 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 NAME SOURCE LO XOVER Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 A A A A A A SHAPE L-R 24 L-R 24 L-R 24 L-R 24 L-R 24 L-R 24 FREQ OUT 50.8Hz 159Hz 500Hz 1.62kHz 5.09kHz SHAPE L-R 24 L-R 24 L-R 24 L-R 24 L-R 24 L-R 24 FREQ 50.8Hz 159Hz 500Hz 1.62kHz 5.
FDS-366T Default Configuration Settings (common) PHASE (Degrees) 0 0 0 0 0 0 POLARITY Normal Normal Normal Normal Normal Normal GAIN 0dB 0dB 0dB 0dB 0dB 0dB ON/OFF On On On On On On OVER 6dB 6dB 6dB 6dB 6dB 6dB THR 4dBu 4dBu 4dBu 4dBu 4dBu 4dBu ATK Med Med Med Med Med Med REL Med Med Med Med Med Med LINK OFF OFF OFF OFF OFF OFF LENGTH 0m 0m 0m 0m 0m 0m On On On On On On ON/OFF Off Off Off Off Off Off THR 0.0dBu 0.0dBu 0.
FDS-366T 25.0 Filter Allocations The crossover filters and EQs share DSP resources between two Motorola 56300 DSP chips. There are certain assignment constraints, the table below summarizes how the resources are allocated.
FDS-366T 26.0 Specifications and Block Diagram Performance (filters out) Metering Input headroom metering -20dB, -12dB, -6dB, -3dB, Clip Relative to clip point (+20dBu) Output metering SIG (-40dB), -20dB, -12dB, -6dB, -3dB, 0dB, Over (+6dB) Relative to limiter threshold setting Input Section Input Impedance Maximum Input Level CMRR Input gain Input Connector 10kOhm, electronically balanced +20dBu Better than 50dB (30Hz-20kHz) +/-15dB variable in 0.
FDS-366T Specifications Output Section Output Impedance Maximum Output Level Output Gain Output Connector <50 Ohms, electronically balanced & floating +20dBu into 600 Ohms or greater +/-21dB, variable in 0.1dB steps XLR-3M or equivalent Transformer Balancing optional Crossover Filters Slopes 6, 12, 18, 24, 36, 48 or 52dB per octave (Filter type dependant) Type Bessel, Butterworth, Linkwitz-Riley or Neville Thiele Method Delays Available on Inputs A, B, and C, and Outputs 1, 2, 3, 4, 5, 6 Delay Step 10.
FDS-366T 27.
FDS-366T 28.
FDS-366T User Notes - 107 -
FDS-366T User Notes - 108 -
FDS-366T A AES/EBU 13 Alignment Assistant14 Applications 11 5-Way Zoning Distribution B Backup 68 band gain 76 Block Diagram Brightness 58 96 C CD Horns adding EQ 42 Clipboard 68 Contents 3 Contrast 58 Crossover Shapes Cut/Boost EQ 83 19 D Delay correction 51, 58, 66 input 70 output 78 Delay Link output 78 DEQ 16 DSP 11 Dynamic Equalisation 16 E EQ 71, 72, 79, 81 adding a new EQ81 Cut/Boost 83 frequency 83 shape 82 width 83 EQ shape 82 F File Allocation Table Frequency EQ 83 Xover 75 Full range band
FDS-366T storing 68 I Inputs 27 delay 69, 70 L LCR 23 LED mode Limiter threshold Limiters Lock OEM owner 26 77 14 63 60 M Main Display 26 memories 11 Meter output 26 MIDI connectors 27 setting channel number 66, 67 setting mode 66 MIDI implementation chart 92 Mode LED 26 Mono mode 51 Mute LED 26 O Output band gain 76 delay 78 delay link 78 High Xover shape limiter threshold 77 Low Xover freq 75 Low Xover shape 75 name 74 Phase 77 polarity 77 source 74 Output meter 26 Outputs 27 75 P PC Card card t
FDS-366T Phase matching Polarity 77 Power AC Fusing 30 connection inlet 27 13 29, 30 Q Quick reference adding EQ for CD Horns 42 R Rear panel 27 Recall key 25 Recalling from a PC Card 37, 44 RS-232 connections 27 S Safe mode 15 Sample rate 13 Security 11 Source 74 Specification 96, 97 Stereo 2-Way mode 51 Stereo Link 22 Store key 25 Swap 68 System security 91, 93, 94, 95 T Temperature 58 Thiele 20 U Unsaved changes Utilities brightness 58 Contrast 58 Delay Units Limit Units Lock Out 61 MIDI channel
FDS-366T EQ 83 Wiring convention 27 X Xover adjust 52 Output - High shape Output - Low freq Output - Low shape 75 75 75 - 112 -
