User's Manual

C-5000 COMMUNICATION MANAGEMENT CONTROLLER
INSTALLATION MANUAL
Publication No. 150-041118 Page 4-27
Rev C Section 4 –Electrical Installation
May 2006
Pin - Signal Name
Y - MIC HI IN
This input is the standard 150 Ohm carbon microphone high input. The nominal
input is .25 Vrms and is adjustable over a range of .125 Vrms to 1.5 Vrms. The 3
dB bandwidth is 100 Hz to 8.7 kHz for raw audio and 300 Hz to 3 kHz for
processed audio per EIA specifications.
Z - MIC LO/PTT IN
This input when pulled to ground, places the radio in transmit mode if the
transmit bit is set in the serial data stream. This input also forms the low side of
the standard 150 Ohm carbon microphone.
a - EXTERNAL PTT
If the radio is controlled by a controller other than a C-5000, the RT-5000 will
transmit if this pin is grounded.
b - PTT OUTPUT
This output sinks 30ma to ground when the RT-5000 is transmitting.
c - SWITCHED +15 V
This output is capable of supplying +15 V ± 1.5 V at 500 mA.
d - TX SWITCHED +15V
When the RT-5000 is placed in transmit mode, this output supplies +15V ± 2.5V
at a maximum of 100 mA.
e - SWITCHED +27.5V
This output is capable of supplying unregulated +27.5V at 500 mA.
f - MAIN AUDIO INHIBIT
When this input is pulled to ground, the main receiver audio is disabled.
g - EXTRA WIDE BAND AUDIO IN
This input is the single ended extra wide band audio input. It has a nominal
impedance between 2k Ohms and 5k Ohms and a 3 dB bandwidth of I Hz to 40
kHz. The input is adjustable from 0.1 Vrms to 1.5 Vrms and set to .6 Vrms.