User's Manual

C-5000 COMMUNICATION MANAGEMENT CONTROLLER
INSTALLATION MANUAL
Publication No. 150-041118 Page 4-79
Rev C Section 4 –Electrical Installation
May 2006
Pin(s) - Signal Name
Some possible uses for these include:
• Antenna switching
• External encoder enable (disable).
• External decoder enable (disable).
• Any functional or equipment switching associated with a given channel.
These switch closures may be combined with a digital decoder to expand the
capabilities.
These switches are open collector drivers. Open switch voltages may not exceed
+30 V, and in the closed condition, the switches will sink up to 40 mA.
62 - CONTROL UNIT GROUND
This line provides signal ground reference for the Control Unit. (The Control Unit
electronics are isolated from the chassis).
41, 61 - AUDIO HI AND LO
These lines provide a balanced 600 Ohm audio output from the Transceiver and
are set for 100 mW into a 600 Ohm load. (7.75 Vrms)
11, 33 - MIC HI AND LO/PTT
These lines are used for voice modulation and to enable the transmitter. Mic
sensitivity is factory set for an input of 0.25VRMS at 1 kHz to provide ±3 kHz FM
deviation, 85% AM modulation. The MIC LO/PTT line activates the transmitter
when grounded and disables the receiver outputs.
39 – TX, Transceiver Or Control
The Transceiver and control pull their respective TX lines low during transmit to
provide TX information to auxiliary equipment.
45 - EXTERNAL ENCODE IN
This line provides for modulating the transmitter from external encoding devices
in the frequency range of 60 to 3000Hz. Inputs of 1.0 Vrms will yield
approximately ±2.5 to
±3 kHz deviation. The RT-138F and RT-406F Frequency Range is approximately
1Hz to 6 kHz.