(b) Rotate each SHF MONITOR switch
to 10, X10.
When the ON-LINE switch is in the
(c) Place each AC POWER switch to
PA1 position, the power supply A14
and power amplifier A13 group
(d) Observe that each AC POWER
(located in rack 3) is terminated into
(e) Hold each FAULT switch in the
and power amplifier A17 group
RESET position and observe a reading of 10 to 30 on the
(located in rack 4) is terminated into
status monitor meter.
the dummy load. When the ON-LINE
(3) XMT patch (A9). Patch the selected
switch is in the PA2 position, the
upconverter and amplifier/mixer to the selected power
status is reversed.
(2) On-Line PWR SPLY PP-7087 (A14 or
(4) Upconverters (A11, A12, A15, A16).
Operate and observe the selected upconverters as
Place the selected on-line power supply START and
BLOWER switches to ON and place the selected power
(a) Place the POWER switches to ON.
supply OPERATE/STANDBY switch to OPERATE.
(b) Observe that the POWER indicators
Allow a warm-up time of 5 to 8 minutes.
(3) Power amplifier (A13 or A17). On the
(c) Tune the applicable units to the
selected power amplifier, operate as follows:
(a) Open the KLYSTRON TUNE door.
m. Rack 4, Alarm Monitor (A19) and LNA Control/
(b) Tune the klystron to the selected
(1) Alarm monitor (A19). Place the POWER,
o. Rack 2, Amplifier/Mixers (A18 and A10).
AC, and DC switches to ON and observe the following:
Operate and observe the selected amplifier/mixer as
(a) AC indicator illuminates.
(b) DC indicator illuminates.
(1) Set up the SHF MONITOR meter to read
selected channel inputs (CH1, CH2, CH3, and CH4) for
The audible alarm indicator may be
70 mw as adjusted by the LEVEL ADJUST control.
activated at turn-on.
(2) Set up the SHF MONITOR meter to read
AUDIBLE SIGNAL/FAULT switch to
approximately 160 mw of SHF OUT as adjusted by the
OUTPUT LEVEL control.
(2) LNA control/translator (A20). Place the
TRANSLATOR POWER switch to ON: operate and
Readjustment of the selected LEVEL
observe as follows:
(a) Observe that the selected ON LINE
Any adjustment will
indicator (LNA No. 1 or LNA No. 2) is illuminated.
cause a change in the step (1) input
(b) Place the selected LNA CONTROL
POWER switch to ON and observe that the applicable
POWER indicator illuminates.
A17). On the selected power amplifier, operate as
(c) Place the selected LNA CONTROL
HI HEAT switch to ON.
(1) Hold the ZERO/SET switch in the SET
position while performing the next step.
THE FAULT indicator illuminates
(2) Adjust the ZERO SET control for 0.0 watts
during warmup and will extinguish
reading on the MONITOR meter with the MONITOR
after approximately 5 to 8 minutes,
select switch in the x0.1 position and release the
temperature. If desired, an applicable
(3) Adjust the OUTPUT LEVEL control for
HI HEAT switch may be placed to the
approximately 10 watts on the MONITOR meter.
ON position to speed up the warmup
(4) Connect the SHF TEST OUT to the
cycle; the associated HI HEAT
applicable RF patch panel input (upper section of rack
indicator illuminates in response.
q. Rack 1, Downconverter (A2, A3, A4, A5 or A6).
n. Racks 3 and 4; On-Line Switch and On-Line
Power Supply PP-7087 (A14 or A18).
(1) ON-LINE switch (top of rack 3). Place the
ON-LINE (waveguide) switch to the selected PA position
(PA1 and PA2).