C-5000 COMMUNICATION MANAGEMENT CONTROLLER
INSTALLATION MANUAL
Page 4-20 Publication No. 150-041118
Section 4 – Electrical Installation Rev A
Sep 2001
(k) CONTROL TX L (Pin L)
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.
(l) CONTROL TX H (Pin M)
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.
(m) DATA SHIELD GND (Pin N)
This ground shields lines E, F, J, and K.
(n) MAIN SQUELCH ANNUN (Pin P)
This output sinks 30 mA to ground when the main receiver signal-to-noise squelch
conditions are met.
(o) GUARD SQUELCH ANNUN (Pin R)
This output sinks 30 mA to ground when the guard receiver signal-to-noise squelch
conditions are met.
(p) RS232-RXD (Pin S)
This pin is used to transfer information to the MTM guard.
(q) RS232-TXD (Pin T)
This pin is used to transfer information to the MTM guard.
(r) RS232-CTS (Pin U)
This pin is used to transfer information to the MTM guard.
(s) Attenuator Control (Pin V)
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.
(t) On/Off (Pin W)
When this input is pulled to ground, power is applied to the RT-5000.
(u) Guard Squelch Disable (Pin X)
When this input is pulled to ground, the guard squelch conditions are overridden.
(v) MIC HI (Pin Y)
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