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Codan MT-3 User Manual

Codan MT-3
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TN655 CI-BC-4E Base Control Card
MT-3/4 Radio Systems
TECHNICAL NOTES
Page 1 of 2
LMRSALES@CODANCOMMS.COM
CODANCOMMS.COMTECHNICAL NOTE:
TN655, REV 3-1-0, © Mar 2013
CANADA/US +1 250 382 8268 | TOLL FREE +1 800 664 4066
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.
The CI-BC-4E base control card module circuitry consists of three main functional blocks:
(1) The repeater control circuit allows all the common COR / PTT routing combinations for dual
base-repeater systems.
(2) Front panel interface allows for user control of transmitter and receiver functions, including
encryption operation.
(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.
CI-BC-4E External Audio Input: 600 , -25 dBm to 0 dBm adjustable
CI-BC-4E External Audio Output: 600 , -20 dBm to +3 dBm adjustable
CI-BC-4E Internal Audio Input: 4.7 K, -25 dBm to +3 dBm adjustable
2
1
5
4
3
67
8
11
10
9
FUNCTION
12
SYSTEM REGULATOR
MADE IN CANADA
VOL METER
+
-
ON
OFF
SPKR
INT
EXT
EXT
SPKR
ANTENNA A
RX A
TX A
TRANSMITTER
CNTL
BUS
MIC RF OUT
AD
ANALOG
DIGITAL
NORM
OFF
KEY TX
MICMODE
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA
MODEL # CODE
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
AD
RF NI
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA
MODEL # CODE
P25 BASE
CONTROL
BNK
PULL DOWN
TO REMOVE
5
9
13
RX A
A
B
BNK
5
9
13
TX A
A
B
TX A TX B
Secure
Clear
Zeroize
Key
Local
Disable
Enable
P25 BASE
CONTROL
BNK
PULL DOWN
TO REMOVE
5
9
13
RX A
A
B
BNK
5
9
13
TX A
A
B
TX A TX B
Secure
Clear
Zeroize
Key
Local
Disable
Enable

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Codan MT-3 Specifications

General IconGeneral
BrandCodan
ModelMT-3
CategoryReceiver
LanguageEnglish