Power And Frame Ground - Symmetricom TimeSource 2700 Manual

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Power and Frame Ground

Caution:
power the TimeSource 2700 Shelf are removed before connecting
power.
Note:
replaceable fuses.
Shelf Front Panel
The
nine-pin male DB9 connectors labeled Power A and Power B.
Figure 8 shows the location of the connectors, and Table C lists
the connector pinouts.
Note:
available, connect the single office battery to the Power A connector
on the shelf front panel. This is not a recommended arrangement.
Solder the power and frame ground wires to a customer-supplied
female DB9 connector, following the pinouts listed in Table C, then
mate to the Power A or Power B connector on the front panel.
Note:
tery source, but do not apply the office battery to the TimeSource
2700 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 and frame ground enter through the
–
If two office battery supplies (battery A and battery B) are not
Connect the power leads from pins 1 and 2 to the office bat-
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Installation
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