External clock (j11), Balanced g.703 interface (j12), 10 external clock (j11) – Comtech EF Data UB-530 User Manual
Page 26
Breakout Panel
Revision 2
Connectors and Switches
MN/UB530.IOM
2–14
2.2.10
External Clock (J11)
The connection for the unbalanced external clock interface is a BNC connector located at
the front of the breakout panel. This connection is used for clocking data out of the buffer.
For unbalanced operation, the configuration switches on the rear of the panel must be set
correctly (see Section 2.1).
2.2.11
Balanced G.703 Interface (J12)
The connection for the balanced G.703 interface is a 15-pin socket D connector located at
the front of the breakout panel. Screw locks are provided for the mechanical security of the
mating connector. For balanced operation, the configuration switches on the rear of the
panel must be set correctly (see Section 2.1).
Signal Function
Name
Pin #
Ground GND
2,
4
Drop data input/SD
DDI–A
1
DDI–B
9
Insert data output/RD
IDO–A
3
IDO–B
11
Drop data output
DDO–A
12
DDO–B
5
Insert data input
IDI–A
13
IDI–B
6
External clock
EXC–A
7
EXC–B
8