TB 9-4931-495-24
(10) Decrease POWER LEVEL control 10 dB as indicated on power meter.
Indication on microwave frequency counter will not change more than 1 MHz.
(11) Repeat (8) through (10) above for BANDS 2 and 3.
b. Adjustments. No further adjustments can be made.
a. Performance Check
(1) Connect equipment as shown in figure 6, connection B.
(2) Set polarity switch (located at top front of RF plug-in) to match the polarity of
the crystal detector being used.
(3) Position controls as listed in (a) and (b) below.
(a) BAND selector to BAND 1 (Model 86320A).
(b) ALC switch to EXT.
(4) Press MARKER SWEEP (START) pushbutton and adjust POWER LEVEL
and GAIN controls for maximum leveled power output. Power meter will indicate +10 dBm
or more for BAND 1 (Model 86320A) (considering attenuator (fixed)).
NOTE
Tolerances given do not include variations due to crystal
detector and power splitter frequency response.
(5) Adjust MANUAL sweep control slowly throughout its range and note indications
on power meter. Difference between minimum and maximum will be less than 0.4 dB.
NOTE
Steps (6) and (7) below are applicable to models with option 001
(6) Set ACL switch to INT and adjust POWER LEVEL and ALC GAIN controls for
maximum leveled power out.
(7) Repeat (4) and (5) above. Variation will be less than 0.8 dB.
(8) Repeat (3) through (7) above for BAND 2 and BAND 3. Maximum leveled power
out will be greater than +7.5 dBm for BAND 2 (model 86330A) and +10 dBm for BAND 3
(model 86341B).
NOTE
Steps (9) through (11) below are applicable to models with
option 010 (70 dB attenuator (fixed)).
CAUTION
Always adjust power level fully ccw or RF switch to OFF
before making connections.