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Verifying STX LEDs and
Connecting the Optional
BITS Clock
The STX module requires no external connections, but you must verify the front
panel indicator sequence illustrated in Figure 25.
Figure 25 STX Module LED Power-up Sequence
1.
2.
3.
4.
Power
Inservice
Fail
Test
Active
Connecting the Optional BITS Clock (STX)
The PathBuilder S700 can receive or transmit a Bipolar Timing Source (BITS) clock
through the STX module. It offers the following options for the clock setting:
T1 CSU
n
DSX 0-133 feet
n
DSX 133-266 feet
n
DSX 266-399 feet
n
DSX 399-533 feet
n
DSX 533-655 feet
n
If desired, you can connect a BITS clock to the clock signal input or output port
located on the rear of the PathBuilder S700 using a DB-9 connector, as shown in
Figure 26.
This feature is currently available for North American, DSI, Standard carrier signals.
Step 4: Connect I/O Cabling and Wiring
51
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