IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
7-14
Table 7.2 RS232, HHT & Alarm Connectors J1 and J8, Pin Assignments
Tx 1+1 INTERFACE MODULE: J1, J8
PI
N FUNCTION
A N/C
B N/C
C HANDHELD TERMINAL POWER (+)
D RS232 RXD
E RS232 TXD
F HHT, RS232 Common
G N/C
H N/C
J N/C
K N/C
L IBUC ALARM OUTPUT Normally Open
M GND
N N/C
P N/C
R N/C
S N/C
T N/C
U N/C
V N/C
M&C Interface J2 and J4: The M&C Interface connectors are 19-pin, circular, male
connectors used to allow the IBUC’s to exchange communication and status, as well as
monitor and control the WG switch. Pin assignments are shown below. The M&C
cables used to connect the Tx 1+1 Interface Module and the IBUC’s are supplied with
the Tx 1+1 System.
Table 7.3 M&C Interface Connectors J2 and J4, Pin Assignments
Tx 1+1 INTERFACE MODULE: J2, J4
PI
N
FUNCTION
A RS485 (+)
B RS485 (-)
C HANDHELD TERMINAL POWER (+)
D RS232 RXD
E RS232 TXD
F HHT, RS232 Common
G TCP/IP TX+
H TCP/IP TX-
J TCP/IP RX+
K TCP/IP RX-
L IBUC ALARM OUTPUT Normally Open
M IBUC ALARM OUTPUT Common
N IBUC ALARM INPUT
P IBUC ALARM OUTPUT Normally Closed
R 1+1 SWITCH COMMAND A
S 1+1 SWITCH COMMAND B
T 1+1 SWITCH INDICATOR A
U 1+1 SWITCH INDICATOR A
V 1+1 REDUNDANCY ENABLE