IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
7-15
User Interface J3: The User Interface connector is an 8-pin, circular, male connector
used to allow remote monitoring and control of the Tx 1+1 System operating
parameters. Pin assignments are shown below. If the User Interface port of the Tx 1+1
Interface Module is going to be used the cable should be a shielded multi-conductor
cable with at least two each twisted pairs. The twisted pairs used for TCP/IP must have
an impedance of 100 ohms. Please also see the IP cable drawing attached. An
assembled IP cable is available from Terrasat.
Table 7-4 User Interface Connector J3, Pin Assignments
Tx 1+1 INTERFACE MODULE: J3
PIN FUNCTION
A RS485 (+)
B RS485 (-)
C COMMON
D TCP/IP TX+
E TCP/IP TX-
F TCP/IP RX+
G TCP/IP RX-
H NC
Transmit Out J5 and J7: The TX OUT connectors are Type N, female connectors
used to connect the IF at L-Band from the Tx 1+1 Interface Module to the IBUC’s. 50Ω
cables should be used to connect to J5 and J7. These cables are supplied with the Tx
1+1 System. The Tx 1+1 Interface Module also supplies the IBUC’s the FSK signal and
the 10MHz reference connectors J5 and J7.
Transmit In J6: The TX IN connector is a Type N, female connector used to connect
the IF at L-Band from the Modem. 50Ω cables should be used to connect to J6. The
Modem also supplies through this connector the FSK signal and the 10MHz reference
for the IBUC’s.
WG Switch Control / Indicator J9: The WG Switch Control / Indicator connector is a
6-pin, circular, female connector used to allow the Tx 1+1 System to control and monitor
the WG Switch. The cable that connects the Tx 1+1 Interface Module and the WG
Switch is supplied with the System.
IBUC connections
Refer to Chapter 4, pages 4-5 through 4-8.
Power Supply Connections
Refer to Chapter 4, pages 4-8 through 4-10.
RX System – A receive redundancy interface box provides interfaces for the LNBs and
switch control for the RX waveguide switch. M&C is available via a single connector
using RS232, RS485 or TCP/IP for remote M&C or hand held terminal for local control.
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