Frame Ground - Symmetricom TimeSource 2500 Manual

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Frame Ground

Shelf Front Panel
Frame ground enters through the Power A and Power B
connectors. These are nine-pin male DB9 connectors. Refer to
Figure 26 for the location of the connectors. The pinouts in the
connectors are listed in Table D.
Ensure the frame ground wires are long enough to go from the
shelf front panel to the frame ground connection. Solder the frame
ground wires to pin 6 of customer-supplied female DB9
connectors.
Table D. Front Panel Frame Ground and Power Connector Pinouts
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Pin
1 –48 V dc
2 Battery return
6 Frame ground
Note: Pins not listed are reserved
for future use.
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Signal
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73
Installation
S
3
3
4
5