TB 9-4931-534-35
(5) Adjust signal generator to frequency determined in (3) above and RF output to
+3 dBm.
and RF output to 0 dBm.
(7) Establish a reference on receiver system at 1 GHz and press receiver system
MEAS-REF pushbutton.
(8) Disconnect fixed short from directional coupler.
(9) Connect TI to directional coupler and record receiver system readout indication
as return loss.
NOTE
Sliding terminations and mismatches only: Adjust sliding load
to phase the standard with the TI by establishing minimum
and maximum return loss indications. Average the two
indications and record results as TI return loss in dB.
(10) Remove TI from directional coupler and connect fixed short to directional
coupler.
(11) Repeat technique of (7) through (10) above two times and average values
recorded in (9) above. Averaged value as return loss in dB will be within the limits listed in
(12) Remove TI from directional coupler and connect fixed short to directional
coupler.
(13) Repeat (2) through (11) above for remaining test frequencies.
b. Adjustments. No adjustments can be made; however, a correction chart may be
prepared showing actual VSWR value at test frequencies.
a. Performance Check
(1) Connect equipment as shown in figure 1 except do not connect VSWR bridge into
equipment setup. Allow equipment to warm-up 1 hour.
7a above with optimum RF output.
(3) Connect POINT A to POINT B (fig. 1).
