System Operator’s User Manual P25net Channel Controller Raytheon Company 5800 Departure Drive Raleigh, NC 27616 24/7 Technical Support For support, call 1-800-498-3137 Email: p25net.sales@raytheon.com P/N 5060-600200 Revision 1.
P25net Channel Controller Operations Manual PROPRIETARY STATEMENT This document is copyright © Raytheon 2011. No part of this document may be reproduced in any form, transmitted, or stored in a retrieval system without the prior written consent of Raytheon. This document is classified Commercial in Confidence. Its contents may not be divulged to third parties without the prior written consent of Raytheon.
P25net Channel Controller Operations Manual CONTROL AND OWNERSHIP This is a controlled document. Unless stated otherwise, the sole controlled copy of this document resides in the Raytheon document control repository, and other copies in electronic and printed form are uncontrolled. REVISION HISTORY Revision Date Details 1.00 03 Jan. 2008 First Release 1.01 24 Jan 2008 Minor updates & formatting; no technical changes 1.03 08 Oct 2008 Added Specifications and Radio Calibration using PCCT 1.
P25net Channel Controller Operations Manual Table of Contents 1 INTRODUCTION ......................................................................................................................................... 1-1 1.1 1.2 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.3.6 1.4 1.5 1.6 2 INSTALLATION .......................................................................................................................................... 2-1 2.1 2.2 2.3 2.4 2.5 2.5.1 2.5.2 2.5.3 2.5.4 2.6 2.7 2.8 2.9 3 Scope .
P25net Channel Controller Operations Manual 3.11.1 Load/Save Config Window ........................................................................................................... 3-20 3.11.2 Default Radio Settings Loaded...................................................................................................... 3-21 3.12 Fallback Mode ...................................................................................................................................
P25net Channel Controller Operations Manual Glossary APCO APCO P25 BS BSC CC IP ISSI OTAR P25 P25net P25net CC PSTN RF RFSS RSSI Rx or RX Tx or TX WACN Association of Public-Safety Communications Officials. Note that in this document, “APCO” as used invariably refers to APCO Project 25 APCO Project 25 digital conventional and trunked radio standard. Base Station Base Station Controller See P25net CC. Internet Protocol Inter Subsystem Interface Over The Air Rekeying P25 See APCO P25.
P25net Channel Controller Operations Manual 1 Introduction 1.1 Scope This instruction manual provides information necessary to install and operate the P25net Channel Controller, a component of Raytheon’s P25net system. Installation requirements and calibration with the connected radio are covered. For system installation, configuration, and operation refer to the P25net Training Guide. 1.2 Description The P25net Channel Controller (P25net CC) is a 1 RU (Rack Unit; 1.
P25net Channel Controller Operations Manual combining two or more P25net sites with a Radio Network Controller (RNC) and a Network Location Register (NLR) through an IP based network, a multi site system can be created. Figure 1-2 Typical P25net System 1.3 Analog Base Radio Requirements The following are general considerations for radios suitable for P25net CC interface requirements. 1.3.1 Duplex Operation The radio must be capable of full duplex operation as a base station rather than a repeater.
P25net Channel Controller Operations Manual 1.3.5 Frequency Stability The following recommendations are from the P25 standard (ANSI/TIA-102.CAAB-C): Assigned Frequency (MHz) Frequency Stability Parts per Million (PPM) Below 100 2.5 138-174 1.5 406-512 0.5 764-806 0.1 806-869 0.15 896-941 0.1 1.3.6 Narrowband Channel Bandwidth The radio should be capable of 12.5kHz channel programming. 1.
P25net Channel Controller Operations Manual Table 1-1 P25net CC Specifications RS-232 Receive RS-232 Transmit Digital Ground RS-232 Rx: Pin 1 on the D15F rear panel connector Channel 1-4 RS-232 Tx: Pin 2 on the D15F rear panel connector Channel 1-4 Pin 9 on the D15F rear panel connector Channel 1-4 Ground reference for the RS-232 data lines.
P25net Channel Controller Operations Manual 1 P25net CC Operation Manual 5060-600200 1 Accessory Kit consisting of: 5060-610150 (2 )AC Power Supply 90-264VAC 1620-264061 Line Cord 0313-037770 (2) Table 1-3 Equipment and Accessories Supplied P25net CC with Manual and Accessory Kit 1 All items below are included within P/N 5060-610000 Items included: 1 P25NET CC One Channel Unit 1 Operation Manual Accessory Kit- Consisting of: Qty Part Number Description 2 0313-037770 Line Cord 2 1620-264061 Powe
P25net Channel Controller Operations Manual Table 1-5 Equipment and Accessories Supplied 2 2 0313-037770 1620-264061 Line Cord Power Supply, 90-264VAC Table 1-6 Equipment and Accessories Supplied P25NET CC Four Channel Unit with Manual and Accessory Kit Quantity Item P/N 1 P25net CC Four Channel Unit with Manual and Accessory Kit All items below are included within P/N 5060-620000 Items included: 1 P25net CC One Channel Unit 3 P25net CC One Channel Expansion Kit 1 Operation Manual Accessory Kit- Cons
P25net Channel Controller Operations Manual 2 Installation 2.1 General This section provides the instructions for unpacking, inspection, installation and set-up. Included are directions for reshipment of damaged parts or equipment. 2.2 Unpacking and Inspection After unpacking the unit, retain the carton and packing materials until the contents have been inspected and checked against the packing list. If there is a shortage or any evidence of damage, do not attempt to use the equipment.
P25net Channel Controller Operations Manual Shipment should be made prepaid consigned to: Raytheon Company Customer Service Department 5800 Departure Drive Raleigh, North Carolina 27616 USA Plainly, mark with indelible ink all mailing documents as follows: U.S. GOODS RETURNED FOR REPAIR Mark all sides of the package: FRAGILE - ELECTRONIC EQUIPMENT Inspect the package prior to shipment to be sure it is properly marked and securely wrapped. 2.
P25net Channel Controller Operations Manual 2.5 Installation Considerations Careful attention to the following installation suggestions should result in the best unit/system performance. Figure 2-1 provides overall unit dimensions. The P25net CC must be installed in a structure, which provides both protection from the weather and assurance of ambient temperatures between -0 and +60 degrees C. Since the unit is neither splash proof, nor corrosion resistant, it must be protected from exposure to salt spray.
P25net Channel Controller Operations Manual 2.5.4 Rear Panel Connectors and Controls 2.5.4.1 D15 Radio Interface Connector The rear panel has up to four D15 connectors for interface to radios. The pin-outs for each connector channel are listed in the following table. Units having less than 4 channels will have unused connector locations covered with a press-in type plug.
P25net Channel Controller Operations Manual Table 2-1 D15F Connector Pin-outs (Channels 1-4) Pin Function 1 RS232_RX_IN 2 RS232_ TX1_OUT 3 DIN1 4 OUT0 5 TXKEY 6 AUDIO_TX_OUT 7 AUDIO_RX_IN 8 RSSI_OUT 9 DGND 10 DIN0 11 FGND 12 DIN2 13 IN3 14 AGND 15 AGND 2.5.4.2 DC Input Jack J1,J2 The supplied external AC adapters connect to DC inputs A and B (J1/J2 on rear panel; J1/J2 are 5.5mm x 2.5mm locking DC Power Jacks (Switchcraft L712A).
P25net Channel Controller Operations Manual 2.5.4.5 RJ45 Ethernet port This jack is normally used for connection to a BSC. LAN AC power DC power channel 1 processor channel 2 processor channel 3 processor channel 4 processor tx tx tx tx rx rx rx rx etherstack powered 1.75 P25 Channel Controller 19.0 12.4 16.
P25net Channel Controller Operations Manual Figure 2-3 Rear Panel (3 Channel Unit shown) 2.6 AC Power Requirements The P25net CC is supplied with two AC adapters (Figure 5) that will operate over a wide AC voltage range (90-264VAC). The supply circuit requirement is 20VA. The adapters are provided with locking DC plugs for connection to the P25net CC rear panel DC input jacks A and B. The adapters supply 12VDC @ 1A to the P25net CC. Each has an IEC 320 inlet for attaching the AC power cord (supplied).
P25net Channel Controller Operations Manual 2.8 Network Connection The P25net CC must be connected by a single Cat-5 or Cat-6 cable to either an Ethernet switch or hub, or connected directly to a Base Station Controller (BSC). Either the front or rear RJ-45 connector can be used for this purpose, but both connectors should not be cabled to the same device.
P25net Channel Controller Operations Manual This Page Intentionally Left Blank 2-9
P25net Channel Controller Operations Manual 3 Radio Calibration 3.1 Calibration Overview The channel card in the P25net CC must be calibrated to the connected radio. This process adjusts the internal audio circuits within the P25net CC to adapt to the radio’s audio levels and sets the transmit deviation for P25 narrowband requirements. In addition, the RSSI signal from the receiver is characterized by the P25 processor to enable proper synchronization to the P25 packet data streams.
P25net Channel Controller Operations Manual Figure 3-1: Commencing installation of the PCCT Application During the installation process, the user will be prompted to accept the End-User License Agreement (required in order to proceed with installation), select a destination folder for the PCCT application (C:\Program Files\Etherstack\PCCT x.xx, by default), after which installation will commence.
P25net Channel Controller Operations Manual Figure 3-3 PCCT Icon 3.4 Configuring PC Network Connection The PC must be configured to set the Local Network connection to the same address range as the Channel Card. See Figure 3-4. Typically this is done by selecting: Control Panel>Network Connections>Local Area Connections>Properties.
P25net Channel Controller Operations Manual Figure 3-4 PC Local Area Network Setting 3.5 Connecting to Channel Cards A standard Cat 5 LAN cable should be connected from the PC to the P25net CC front panel RJ45 jack. The ‘Open Connection’ item in the ‘File’ menu allows a specific IP address to be used for connecting to a single Channel Card, and also contains a list of auto-detected Channel Cards on the local network.
P25net Channel Controller Operations Manual Figure 3-5 Connection Dialog Box To connect to the Channel Card at a specific IP address, type its address in the text field, and click ‘Connect’. Alternatively, double click the address in the list of auto-detected Channel Cards. Following connection, the oscilloscope window will now be visible, and the configuration interface is now ready for use.
P25net Channel Controller Operations Manual At the end of the firmware process, the front panel lights for that channel will alternate then both stay on and then only the single processor LED should remain lit. IMPORTANT NOTE: Do not switch off the power or interrupt the connection between the PCCT and P25net CC during firmware updates. Wait until the single Processor LED remains lit before any other action. 3.
P25net Channel Controller Operations Manual 3.8 Radio Programming The radio should be programmed according to the Application Note for that specific radio model. 3.9 Transmit Calibration Transmit calibration sets the narrowband deviation for the transmitter and verifies the transmitter can be heard by a P25 receiver. 3.9.1 Equipment Set Up Connect the equipment as shown in Figure 3-8.
P25net Channel Controller Operations Manual 3.9.2 Initial Steps 3.9.2.1 Set the Radio Test Set to analog duplex mode and program for the frequency of the transmitter. 3.9.2.2 Power up the radio and P25net CC. 3.9.2.3 Launch PCCT and connect to the P25net CC channel. 3.9.3 Radio Tx Calibration 3.9.3.
P25net Channel Controller Operations Manual 3.9.3.2 Start a Sine Wave test tone and adjust the Tx Gain for approximately +/2.8kHz as read on the test set deviation meter (Figure X). Adjust the Tx Offset if necessary fort a good undistorted sine wave as displayed on the test set oscilloscope screen (Figure 3-10). Verify the Tx frequency offset error is within required range. Note: Some radios will produce a frequency offset if the Tx Offset is incorrectly adjusted.
P25net Channel Controller Operations Manual 3.9.3.3 Change the test tone selection on PCCT to Short Square Wave (100Hz) and verify the demodulated audio oscilloscope displays a good approximation of a square wave with generally flat high and low levels (Figure 3-11). A poor square wave indicated the radio needs to be aligned with the factory service software to achieve better DC Balance.
P25net Channel Controller Operations Manual 3.9.3.4 Return to the Sine Wave test tone and adjust Tx Vco Gain to get the deviation as close to +/-2.827kHz as possible and adjust the Tx Offset as necessary to correct any flattening or clipping of the sine wave. Tx Vco Gain is a finer adjustment than Tx Gain which provides coarse steps. (See Figure 3-12).
P25net Channel Controller Operations Manual 3.9.3.5 Start an IMBE test tone using PCCT. 3.9.3.6 Tune the test set to P25 mode and listen for a 1200Hz sine wave in the monitor speaker set to demodulated audio. A P25 Handset may also be used for this step if tuned to the proper frequency in conventional P25 mode. 3.9.3.7 If the test tone is not heard, it may be necessary to invert the Tx audio. This is done by putting a minus (-) sign in front of the Tx Vco Gain number (see Figure 3-13).
P25net Channel Controller Operations Manual Radio Under Calibration P25CC Rx Aeroflex 3920 Tx T/R 50 ohm coax CAT 5 50 ohm coax P25CC Radio Interface Cable 50 ohm dummy load PCCT Calibration Software PC Figure 3-14 Rx Calibration Set-up 3-13
P25net Channel Controller Operations Manual 3.10.2 Initial Steps 3.10.2.1 Configure the test set for analog duplex mode and set the generator to produce a 1200Hz sine wave with a peak deviation of 2.827kHz at the receiver frequency. 3.10.2.2 In PCCT go to the Configure >Rx and Tx Manual window and set default values for the Rx parameters as shown in Figure 3-15. Check the “Enable Editing” boxes for entering parameters.
P25net Channel Controller Operations Manual 3.10.3 RSSI Calibration 3.10.3.1 Set the test set for -123dBm generator level and turn on the generator. 3.10.3.2 Start the PCCT oscilloscope and adjust the RSSI Offset so the trace on the oscilloscope is centered around -20000 (See Figure 3-16). Figure 3-16 RSSI Low Level 3.10.3.3 Turn off the generator and verify the RSII level is unchanged.
P25net Channel Controller Operations Manual 3.10.3.4 Turn off the generator and change the level to -118dBm. Turn on the generator and verify RSSI goes to 30000 or above on the oscilloscope (Figure 3-17). Figure 3-17 RSSI High Level 3.10.3.5 Turn off the generator; RSSI settings will be saved when exiting PCCT. 3.10.4 Rx Calibration 3.10.4.
P25net Channel Controller Operations Manual 3.10.4.2 Set the generator on the test set to -60dBm. 3.10.4.3 Check the Rx beam box and start the oscilloscope on PCCT. 3.10.4.4 Adjust the Rx Offset so the mean of the observed sine wave is centered as close as possible about zero. Adjust the Rx Gain so that the signal peaks are slightly less than +20000 and -20000 (See Figure 3-18).
P25net Channel Controller Operations Manual 3.10.4.5 Go to the Configure>Rx (Automatic) window and select trigger on RSSI (2000). 3.10.4.6 Hit Trigger, Calculate, and Save to calculate and store the coefficients for Rx Scale Factor and Offset (Figure 3-19).
P25net Channel Controller Operations Manual 3.10.5 Sync Calibration 3.10.5.1 Turn off test set generator. 3.10.5.2 Go to the Configure>Rx and Tx (Manual) window and set the trigger controls for Handset. 3.10.5.3 Press PTT on the Handset for a short transmission. 3.10.5.4 Hit Trigger and Find Sync. You should see the sync pulse as shown in Figure 3-20.
P25net Channel Controller Operations Manual 3.10.5.5 If the Rx LED on the P25net CC channel lights when the Handset is in PTT hit the Save button to complete the sync calibration. 3.10.5.6 If the sync is not found, go back to the Configure >Rx (manual) window and enable editing. Place a negative (-) sign in front of the Rx Scale Factor and repeat the steps. 3.11 Load/Save Transceiver Configuration PCCT has a feature that allows saving the calibration settings for a radio as well as recalling them.
P25net Channel Controller Operations Manual 3.11.2 Default Radio Settings Loaded After loading a notification of the action will be displayed (see Figure 3-22 Default Settings Applied Screen). Figure 3-22 Default Settings Applied Screen 3.12 Fallback Mode The Fallback Mode can be enabled to provide conventional P25 repeater operation in the event that the BSC reboots or experiences a problem communicating with the P25net CC. Trunking will not be possible until BSC operation is restored.
P25net Channel Controller Operations Manual Figure 3-23 Fallback Mode Enable Screen 3-22
