Satellite Terminal System
Revision 2
Connector Pinouts
MN/KST2000L.IOM
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
Signal
Description
A
-TX/-RX or –TX only (see Note)
– EIA-485 TX/RX or – EIA-422 TX
B
-TX/-RX or –RX only (see Note)
–EIA-485 TX/RX or – EIA-422 RX
C
+TX/+RX or +TX only (see Note)
+ EIA-485 TX/RX or + EIA-422 TX
D
+TX/+RX or +RX only (see Note)
+ EIA-485 TX/RX or + EIA-422 RX
E
RXD
EIA-232 receive data
F
RTS
EIA-232 ready to send (tied to CTS)
G
TXD
EIA-232 transmit data
H
DSR
EIA-232 data set ready
J GND
Ground
K
LNB Power
+15 VDC to LNB
L
LNB Power Return
+15 VDC Return from LNB
M
RESET
Reset (momentary low resets system)
N GND
Ground
P
CTS
EIA-232 clear to send (tied to RTS)
R GND
Ground
S
+12V (KP10 Power)
KP10 power supply output
T
2/4 wire (see note)
EIA-485/EIA-422 operation selection
U
UL_FLT_NC
Uplink fault relay, closed = fault
V
UL_FLT_COM
Uplink fault relay common
W
UL_FLT_NO
Uplink fault relay, open = fault
X
DL_FLT_NC
Downlink fault relay, closed = fault
Y
DL_FLT_COM
Downlink fault relay common
Z
DL_FLT_NO
Downlink fault relay, open = fault
a
SUM_FLT_NO
Summary fault relay, open = fault
b
SUM_FLT_NC
Summary fault relay, closed = fault
c
SUM_FLT_COM
Summary fault relay, common
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.
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