124
TimeSource 3500
Installation
097-72050-01 Issue 7: August 2003
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3
T1 Reference Inputs
Warning:
Because the T1 input circuits do not provide
lightning protection, do not connect the T1 input line directly
to an outside facility. Failure to observe this warning may
result in equipment damage.
T1 reference sources, traceable to an independent Stratum 1
source, can be connected to further increase holdover stability, or
to be monitored by the TimeSource 3500. In either case, connect
the cables to the wire-wrap pins labeled SPAN IN A and SPAN IN
B. Connect the tip wire to the pin labeled T, the ring wire to the
pin labeled R, and the shield (if connected at the
TimeSource 3500) to the pin labeled S. See Figure 26 for the
location of the connectors and pins, and Figure 34 for the wire-
wrap connections.
Note:
The shield pin is capacitively coupled to ground, therefore,
the shield must be connected at the source end. The shield may
also be connected at the TimeSource 3500 end for additional
longitudinal noise protection.
Figure 34. T1 Input Connections
SPAN IN
B
S
R
T
A
Summary of Contents for TimeSource 500
Page 1: ...TimeSource 3500 GPS Primary Reference Source 097 72050 01 Issue 7 August 2003 ...
Page 6: ...6 TimeSource 3500 Contents 097 72050 01 Issue 7 August 2003 ...
Page 161: ...4 Chapter TL1 Reference This chapter provides information for using the TL1 language ...
Page 271: ...6 Chapter Specifications This chapter provides equipment specifications ...
Page 297: ...Index ...