User's Manual

C-5000 COMMUNICATION MANAGEMENT CONTROLLER
INSTALLATION MANUAL
Page 4-26 Publication No. 150-041118
Section 4 – Electrical Installation Rev C
May 2006
Pin - Signal Name
L – RS-422 CTRL RX LO
This input is the active low sense serial data input and meets EIA RS-485 voltage
levels. The data from this input comes from the C-5000.
M – RS-422 CTRL RX HI
This input is the active high sense serial data input and meets EIA RS-485
voltage levels. The data from this input comes from the C-5000.
N - DATA SHIELD GND
Spare ground.
P - MAIN SQUELCH ANNUN
This output sinks 30 mA to ground when the main receiver signal-to-noise
squelch conditions are met.
R - GUARD SQUELCH ANNUN
This output sinks 30 mA to ground when the guard receiver signal-to-noise
squelch conditions are met.
S - RS232-RXD
This pin is used to transfer information to the MTM guard.
T - RS232-TXD
This pin is used to transfer information to the MTM guard.
U - RS232-CTS
This pin is used to transfer information to the MTM guard.
V - ATTENUATOR CONTROL
When this input is pulled to ground, the RT-5000 will engage a 10 dB receive
attenuator in both main and crystal synthesized guard receivers.
W - ON/OFF
When this input is pulled to ground by the C-5000, power is applied to the RT-
5000.
X - GUARD SQUELCH DISABLE
When this input is pulled to ground, the guard squelch conditions are overridden.