TB 9-6625-2124-24
Output Power
a. Performance Check
NOTE
Prior to performing this paragraph, the exact value of 10 dB
attenuator at 50 MHz and 2.2 GHz must be determined.
(1) Connect power meter and 10 dB attenuator to RF OUTPUT.
(2) Connect EXT/MTR ALC INPUT to RECORDER output (rear of power meter).
(3) Press function keys and enter corresponding data on keyboard as listed in (a)
through (c) below:
(a) INSTR PRESET key.
(b) SWEEP TIME key, DATA ENTRY 100 s.
(c) POWER LEVEL key, DATA ENTRY 13 dBm.
(4) Press SWEEP TRIGGER SINGLE and ALC MODE MTR keys. Adjust CAL
until power meter indication plus attenuator value equals +13 dBm. Record power meter
indication.
(5) Press SWEEP TRIGGER SINGLE key and observe power meter indication
during period SWEEP LIGHT is on. Power meter will indicate within +0.1 dBm of value
recorded in (4) above.
NOTE
Disregard power meter fluctuation when TI changes bands.
(6) Press ALC MODE INT key and disconnect cable from EXT/MTR ALC INPUT.
(7) Press function keys and enter corresponding data on keyboard as listed in (a)
through (c) below:
(a) INSTR PRESET key.
(b) CW key, DATA ENTRY 50 MHz.
(c) POWER LEVEL key, DATA ENTRY 13 dBm.
(8) Power meter indication plus attenuator value will be between +11.5 and +14.5
dBm. Record power meter indication.
(9) Press CW key and vary FREQUENCY VERNIER control to tune TI output
frequency from 50 MHz to 8.4 GHz, while observing power meter indication. Power meter
will indicate within 1.0 dBm of value recorded in (8) above.
(10) Press function keys and enter corresponding data on keyboard as listed in (a)
and (b) below:
(a) CW key, DATA ENTRY 50 MHz.
(b) POWER LEVEL key, DATA ENTRY 10 dBm.
(11) Power meter indication plus attenuator value will be between +8.5 and +11.5 dBm.
(12) Make data entry of 5 dBm on keyboard. Power meter indication plus attenuator
value will be between +3.5 and +6.5 dBm.