Power - Symmetricom TimeSource 2500 Manual

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Power

Caution:
power the TimeSource 2500 Shelf are removed before connecting
power.
Note:
replaceable fuses.
Shelf Front Panel
The
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.
If two office battery supplies (battery A and battery B) are not
available, connect the single office battery to the Power A
connector on the shelf front panel. This is not a recommended
arrangement.
Ensure the power wires are long enough to go from the shelf front
panel to the office battery source connection. Solder the power
wires to customer-supplied female DB9 connectors, following the
pinouts listed in Table D, then connect to the Power A and Power
B connectors on the front panel.
Connect the power leads from pins 1 and 2 to the office battery
source, but do not apply the office battery to the TimeSource 2500
at this time.
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Ensure the fuses in the fuse panel which will be used to
Input power is reverse polarity protected; there are no user
48 volt dc battery enters through the Power A and Power B
–
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Installation
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