Table 3-5. Remote M&C Connector (J2) Pin Assignments - Comtech EF Data KST-2000L Installation And Operation Manual

Satellite Terminal System
Connector Pinouts
3.2.1.2 Remote Connector (J2)
The Remote Connector (J2) is a 26-pin, circular, female connector. It is used to allow
remote control and monitoring of KST-2000L operating parameters. Interface is via EIA-
232, EIA-485, or EIA-422 half-duplex. Refer to Table 3-5 for pin assignments.
Note: This cable must be assembled by the user. Figure 3-2 shows the connections for an
EIA-232 adapter for use with a PC COM port.
Table 3-5. Remote M&C Connector (J2) Pin Assignments
Pin
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
Note: These signals can be configured as EIA-485, 2-wire, half-duplex or EIA-422,
4-wire, half-duplex. In 2-wire mode, pins A and B are tied together as are pins C and D.
To select 2 wire operation, pin T is left open. Tie pin T to ground for EIA-422 (4-wire)
operation.
Signal
-TX/-RX or –TX only (see Note)
-TX/-RX or –RX only (see Note)
+TX/+RX or +TX only (see Note)
+TX/+RX or +RX only (see Note)
RXD
RTS
TXD
DSR
GND
LNB Power
LNB Power Return
RESET
GND
CTS
GND
+12V (KP10 Power)
2/4 wire (see note)
UL_FLT_NC
UL_FLT_COM
UL_FLT_NO
DL_FLT_NC
DL_FLT_COM
DL_FLT_NO
SUM_FLT_NO
SUM_FLT_NC
SUM_FLT_COM
Description
– EIA-485 TX/RX or – EIA-422 TX
–EIA-485 TX/RX or – EIA-422 RX
+ EIA-485 TX/RX or + EIA-422 TX
+ EIA-485 TX/RX or + EIA-422 RX
EIA-232 receive data
EIA-232 ready to send (tied to CTS)
EIA-232 transmit data
EIA-232 data set ready
Ground
+15 VDC to LNB
+15 VDC Return from LNB
Reset (momentary low resets system)
Ground
EIA-232 clear to send (tied to RTS)
Ground
KP10 power supply output
EIA-485/EIA-422 operation selection
Uplink fault relay, closed = fault
Uplink fault relay common
Uplink fault relay, open = fault
Downlink fault relay, closed = fault
Downlink fault relay common
Downlink fault relay, open = fault
Summary fault relay, open = fault
Summary fault relay, closed = fault
Summary fault relay, common
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Revision 2
MN/KST2000L.IOM