AR 10006031, Operating And Service Manual

Page: 18 / 62

Model 200T4G8
3.2 INSTALLATION
3.2.1 Unpacking
Upon receiving the TWTA, unpack the unit and inspect it for obvious signs of external damage. If damage is
observed, notify the carrier and contact an authorized service representative.
Save and store the shipping container in case the unit needs to be returned in the future for calibration or
repair.
3.2.2 Mounting
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 lifting and removal of the amplifier from the cabinet is an operation
requiring two people.
Before removal disconnect power, RF and any other interface connectors. On the rear of the unit, remove any
screws used to connect transport brackets to amplifier (two on each bracket). Reinstall screws in holes in
chassis. On the front of the unit, remove the four screws (two outside screws on each side) mounting the front
panel to the cabinet. Carefully slide the amplifier out of the front of the cabinet.
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 for transport. Screws installed in these threaded holes may be removed and replaced with
screws of appropriate length to thread 3/8 - 5/8 inch into the TWTA chassis.
RF OUT
EXTERNAL INTERLOCK
J3
-40dB
RF SAMPLE
A1J2
0 dBM MAX
RF IN
A1J1
50-60 HZ.
190-260 VAC
AC IN J1
IEEE-488
REMOTE
J2
INTERFACE
8-32 TAPPED HOLES
19.00
16.130
FOR REAR SUPPORT
(4 PLACES)
16.130
1.840
0.750
10.50
0.65
Figure 3-1. Rear View of HPA
8 Rev. F