AR 10006896, Operating And Service Manual

Page: 22 / 68

Model 500T2G8
10 Rev E
3.2.2 Mounting and Removing
The TWTA may be operated as a standalone benchtop unit, or it may be installed in a 19" rack.
If rack mounting is desired, first remove the amplifier from the cabinet, then install the amplifier in the rack.
NOTE: Due to the weight of the unit, the installation or removal of the amplifier is a two person operation.
Before removing the amplifier from the cabinet or rack, disconnect power, RF, and any other interface
connectors. On the rear of the unit, remove any screws used to connect brackets to amplifier. On the front of
the unit, remove the four screws holding the front panel to the rack. Carefully slide the amplifier out of the
front of the cabinet or rack.
CAUTION:
Never rack mount the TWTA using the front panel alone. The chassis is
likely to be damaged unless its weight is supported. Bottom support rails
must be provided in a rack mount configuration.
See Figure 3-1 (below) for the locations of threaded holes that may be used for supplementary support of the
rear of the TWTA. Screws installed in these threaded holes may be removed and replaced with screws of
appropriate length to thread 3/8 – 5/8 inch to the TWTA chassis.
Figure 3-1. Side View of TWTA Showing Threaded Holes
If bottom supports are used for rack mount installation of multiple units, the amplifiers should be separated
vertically by at least 1 3/4 inches. This will allow room for necessary support rails and facilitate installation
and removal of the units.