Grass Valley Trinix Back-Up Power Supplies Jan 13 2012 - Manual (Page 47)

Trinix — Installation and Service Manual 47
Installation Procedure - DV-33512 Units
Installation Procedure - DV-33512 Units
Note It is critical that the ORing diodes are present on the 512 PS frame. See the
Note in the
Equipment Required section.
1. 1R power supply frames:
a. Install the external power supply frames in a suitable 19-inch
equipment rack.
The frames are shipped with the DC cables already connected.
The power supply frames should be mounted in the same equip-
ment rack as the Trinix, but they may be mounted in an adjacent
rack if necessary. The cables provided for connection to the Trinix
are approximately ten feet (3 m) long.
No special ventilation spacing is needed for these frames since the
airflow is from front to back.
b. Test the external supplies prior to connecting to the Trinix router.
Temporarily apply electrical tape each of the DC output connectors
(red, blue, white, yellow) to isolate them to prevent shorting out.
Apply power to the external power supplies.
c. Using a voltmeter, verify that the external frame’s output voltage
measures between 47 and 48.5 VDC. Contact Grass Valley
Technical Support if the output voltage is not between this range.
d. Unplug each of the external power supplies’ AC power cords.
e. Unscrew each of the external power supply’s restraining screw and
slide each supply out of the chassis 1 inch.
CAUTION The following steps will interrupt all signals passing though the router until
power is restored.
2. Proceed as follows:
a. Power down the router by unplugging the AC cord for each of the
internal power supplies.
b. On the rear of the Trinix PS chassis, locate the “DC IN +” and “DC
IN -” terminal blocks. See
Figure 5 .
Note The (1) reference is an extra ground check point. Currently it is not being
used.