TN655 3 1 CI BC 4E Control Card Codan Base
User Manual: 6. Controllers | LMR & HF Radio | Codan Radio
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TECHNICAL NOTES MT-3/4 Radio Systems TN655 CI-BC-4E Base Control Card The CI-BC-4E base control card is a plug-in module which provides audio routing, COR and PTT routing and front panel control for an MT-4 base station radio system. The base control card includes the following features: • jumper selectable audio routing, PTT, and muting. • low power analog and CMOS control circuitry. • true balanced 600 inputs and outputs for external equipment connection. • optically isolated inputs and outputs for control by external equipment. • front panel control of channel and bank select for receiver and transmitter. • front panel selection of clear / secure (encrypted) operation and clear keys operation. • front panel selection of local or remote control of base station functions. • suitable for Type 2 E&M signalling. The MT-4 receiver and transmitter modules all connect to the CI-BC-4E base control card via the back panel motherboard. There is no front panel RJ45 connection between the MT-4 receivers, transmitters and base control card. RX A A 5 13 BNK A 5 TX B Enable Zeroize Key 3 ANTENNA A 4 5 VOL 6 + RX A METER - CNTL BUS USB Clear Local 10 7 REF IN B Secure 2 8 NORM OFF 1 11 9 SQ. DISABLE USB BNK 9 TX A NORM OFF KEY TX ANALOG DIGITAL FUNCTION 12 A D A D MICMODE TX A 13 REF IN SYSTEM REGULATOR FREQUENCY (MHz) FREQUENCY (MHz) B 9 RECEIVER TRANSMITTER P25 BASE CONTROL MIC RF I N RF OUT CNTL BUS Disable TX A ON OFF SPKR INT EXT EXT SPKR PULL DOWN TO REMOVE MADE IN CANADA MADE IN CANADA MODEL # CODE MODEL # CODE MADE IN CANADA The CI-BC-4E base control card module circuitry consists of three main functional blocks: P25 BASE CONTROL RX A A 5 13 BNK B 9 TX A A 5 13 9 TX A BNK B Secure (2) Front panel interface allows for user control of transmitter and receiver functions, including encryption operation. TX B Clear Local Enable Zeroize Key (1) The repeater control circuit allows all the common COR / PTT routing combinations for dual base-repeater systems. Disable (3) Audio routing circuitry is for the active level control and distribution of receiver and transmitter audio signals. The CI-BC-4E is designed for applications where interface to external equipment is required. All audio and control inputs/outputs are isolated by transformers and opto-isolators on the CI-BC-4E. PULL DOWN TO REMOVE 600 , -25 dBm to 0 dBm adjustable 600 , -20 dBm to +3 dBm adjustable 4.7 K, -25 dBm to +3 dBm adjustable CI-BC-4E External Audio Input: CI-BC-4E External Audio Output: CI-BC-4E Internal Audio Input: 43 Erie Street Victoria, B.C. Canada V8V 1P8 TN655 Rev 3-1-0 Toll Free Canada & U.S.A. Phone: 1-800-664-4066 Fax: 1-877-750-0004 Mar 13 International Phone: 250-382-8268 Fax: 250-382-6139 © 2013 Codan Limited All rights reserved. Internet Email: LMRsales@codanradio.com Web: www.codanradio.com Page 1 of 2 TECHNICAL NOTES MT-3/4 Radio Systems TN655 CI-BC-4E Base Control Card The three main functions of the CI-BC-4E Base Control Card are shown in Figures 1, 2 and 3: CORA -> PTTA JUMPER CORA INHIBIT PTT INHIBIT TXA PTT RXA COR CORA -> PTTB JUMPER FRONT PANEL RX CHANNEL SELECT ROTARY SWITCHES CORB -> PTTA JUMPER CORB INHIBIT RXB COR CORB -> PTTB JUMPER TXB PTT REPEATER INTERCONNECTIONS RXA CSEL0 FRONT PANEL TXA BANK SELECT SWITCH TXA BANK A/B RXA CSEL1 FRONT PANEL RXA BANK SELECT SWITCH RXA BANK A/B RXA CSEL2 FRONT PANEL TXA SECURE/CLEAR SWITCH TXA SECURE/CLEAR RXA CSEL3 FRONT PANEL TXB SECURE/CLEAR SWITCH TXB SECURE/CLEAR FRONT PANEL TX CHANNEL SELECT ROTARY SWITCH FRONT PANEL ZEROIZE ENCRYPTION KEYS BUTTON TXA CSEL0 ZEROIZE CONTROLLER CLEAR KEYS TXA CSEL1 OPTO ISOLATORS TXA CSEL2 AUX1 COR TXA CSEL3 AUX2 COR FRONT PANEL LOCAL ENABLE / DISABLE SELECT AUX1 PTT AUX2 PTT AUXILIARY CONNECTIONS Figure 1: Repeater Control Figure 2: Front Panel Interface AUDIO GATE AUDIO LEVEL CONTROL C19 AUX1 BALANCED I/P R120 RECEIVER A AUDIO GATES C20 AUDIO LEVEL CONTROLS TXA AUDIO TXA BALANCED I/P R9 DISTRIBUTION AMPLIFIER TXB AUDIO RXA BALANCED O/P TXB BALANCED I/P R5 AUXILIARY AUDIO B11 R13 AUX1 BALANCED O/P LINE DRIVER AMPLIFIERS AUDIO GATE RECEIVER B A11 AUDIO LEVEL CONTROL R48 B14 DISTRIBUTION AMPLIFIER AUX2 BALANCED I/P R123 A14 RXB BALANCED O/P R52 AUXILIARY AUDIO R56 C2 AUX2 BALANCED O/P LINE DRIVER AMPLIFIERS C4 Figure 3: Audio Routing 43 Erie Street Victoria, B.C. Canada V8V 1P8 Page 2 of 2 Toll Free Canada & U.S.A. Phone: 1-800-664-4066 Fax: 1-877-750-0004 International Phone: 250-382-8268 Fax: 250-382-6139 © 2013 Codan Limited All rights reserved. Internet Email: LMRsales@codanradio.com Web: www.codanradio.com TN655 Rev 3-1-0 Mar 13
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