Comtech EF Data CST-5005 - Manual (Page 46)

Single Thread System Installation CST-5005 C-Band Satellite Terminal
2–24 Rev. 1
Table 2-2. RFT Remote Control Connector, J6
Pin # Name Description
RS-232-C RS-485
A GND -RX/TX RX/TX Data
B -RX/TX RX/TX Data
C +RX/TX RX/TX Data
D CTS +RX/TX Clear to send (see Note 1)
E RD/RX Receive data
F RTS Ready to send (see Note 1)
G TD/TX Transmit Data
H DSR Data Set Ready
J GND Ground (green)
K LNA_PWR Output, 10V for powering LNA (see Note 2)
L EXT_PWR Output voltage, 11V, to power RSU-503 and KP-10
M EXT TWT FLT Input, logic 0 or 5V, 5V = FLT, 0V = normal
(see Note 3)
N EXT IN_1 Input, logic 0 or 5V, spare (see Note 3)
P SPARE N/C
R GND Ground (green)
S GND Ground, Signal
T SPARE N/C
U UL_NC Uplink fault relay, connects to uplink COM with fault
V UL_COM Uplink fault relay, COMMON
W UL_NO Uplink fault relay, opens with fault
X DL_NC Downlink fault relay, connects to downlink COM
with fault
Y DL_COM Downlink fault relay, COMMON
Z DL_NO Downlink fault relay, opens with fault
a LNA PWR RTN Return for LNA Power (see Note 2)
b EXT IN_2 Input, 0 to 5V Logic
c SPARE N/C
Notes:
1. In RS-232-C mode, CTS is tied to RTS (and vice versa).
2. LNA can be powered from these pins instead of up through the RF cable.
3. 5V is a floating level.