Making Power Connections - Symmetricom TimeSource 3600 User Manual

Chapter 3 Installing the TimeSource 3600
Installing the Shelf

Making Power Connections

Caution: To avoid electrical shock and possible personal injury,
power source protective fusing must be provided as part of the
installation. This equipment is intended for installation in a restricted
access location.
Caution: To avoid damage to the system, do not apply power to the
TimeSource 3600 before instructed in this procedure. Before
connecting the power cables to the TimeSource 3600, ensure the
fuses are removed from the fuse panel that supplies power to the
power cables.
Note: Input power is reverse polarity protected; there are no user
replaceable fuses in the TimeSource 3600.
Power connections are made on power terminal blocks TB1 and TB2. Refer to
Figure 3-14
to Figure 3-15
Ensure the power wires are long enough to reach from the shelf connector panel to
the office battery source connection.
Use two 1.47 mm (16 AWG) stranded wires for the power connection, one with red
insulation (BATT), and the other with black insulation (RTN).
Connect the power wires with red insulation to the BATT (-48V) wire receptacles on
TB1 and TB2. Connect the power wires with black insulation to the RTN wire
receptacles on TB1 and TB2.
Note: Two separate office battery supplies (–48V A and –48V B) are
recommended. If separate office battery supplies are not available,
connect a single office battery to both inputs (TB1 and TB2) to avoid a
standing battery-failure alarm.
GPS Antenna
Use the supplied 90 degree adapter to connect the coaxial cable from the lightning
suppressor or IF downconverter to the TNC connector labeled GPS ANT. Refer to
Figure 3-14
78 TimeSource 3600 User's Guide
for the location of the terminals on the shelf connector panel, and refer
for the terminal connections.
for the connector location.
097-72060-01 Revision J – June, 2007