TB 9-6625-2296-24
(15) Adjust signal generator frequency to 85 MHz and output to 10mV. Adjust RF
power amplifier gain to minimum then adjust gain and signal generator output until
measuring receiver indicates exactly 33 dB (2 W) minus 10 dB attenuator (fixed) insertion
loss.
(16) Disconnect RF power amplifier from 10 dB attenuator (fixed) and measuring
receiver and connect RF power amplifier to TI T/R. Adjust A14R58 (fig. 6) for 4.02 V dc
100 mV.
(17) Disconnect equipment setup. Connect a 50 Ω load to TI T/R. If multimeter does
not indicate 20 mV dc 2 mV, readjust A14R21 (fig. 6).
(18) Connect equipment as shown in figure 8.
NOTE
Use directional power sensor model 4022.
(19) Press Range (F1) and DATA SCROLL arrow keys to select 200 W range and
press DATA ENTRY ENTER key.
power amplifier output to 50W.
(21) Adjust A14R46 (fig. 6) for 1.97 V dc 100 mV.
(22) Disconnect equipment setup. Connect a 50 Ω load to TI T/R. If multimeter does
not indicate 10 mV dc 2 mV, readjust A14R18 (fig. 6), after allowing 2 minutes
cooling minimum.
(23) Press key sequence listed in (a) through (e) below:
(a) MODE MTRS ..........................
Meters Menu
(b) AUX (F6) ..................................
Auxiliary Functions Menu
(c) DATA ENTRY 1 ......................
(d) DATA ENTRY 1 ......................
Power Meter
(e) Range (F1) several times ........
until PWR C indicates a 20 mW range
(24) Press Zero (F2) key and verify POWER METER ZERO window is
momentarily displayed. Reading should be approximately 270.
(25) Press Range (F1) several times until PWR C indicates a 20 W range.
(26) Press Zero (F2) key and verify POWER METER ZERO window is
momentarily displayed. Reading should be approximately 130.
(27) Connect measuring receiver sensor module to RF power amplifier OUTPUT
using 10 dB attenuator (fixed).
power amplifier output until measuring receiver indicates exactly 33 dB minus 10 dB
attenuator (fixed) insertion loss.
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