HP 3585A Service Manual page 161

Adjustments
5·3 1 . Final I.F. Filter Adjustments
Make the following I.F. ad justments only after the I.F. board
cover is properly screwed down.
a. Set the synthesizer controls for:
b. Connect the output of the synthesizer to a 500 termination. Connect the output of the
termination to the A 1 71 1 connector.
c. Set the 3585A controls for:
d. Adjust A17C27 for the maximum possible marker amplitude reading. Adjust the REF
LEVEL as necessary to keep the marker below the top of the screen.
e. Adjust A 1 7C37 for the maximum possible marker amplitude reading.
f. Set the 3585A controls for:
g. Adjust A 1 8C22 for the maximum possible marker amplitude reading.
h. Set the 3585A controls for:
i. Adjust A 1 9C28 and A19C39 for the maximum possible marker amplitude reading.
j . Set the 3585A controls for:
k. Adjust the REF LEVEL as necessary to keep the marker below the top of the screen.
5-46
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350KHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . " . . . . . -2.0dBm
RECALL 609
INSTRUMENT PRESET
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . I Hz
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Hz
MANUAL SWEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IdB
CLEAR A
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .2Hz
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . .
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .3Hz
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . .
RECALL 601
INSTRUMENT PRESET
MANUAL SWEEP . . . . . . . . . . . . . . . . . " . . . . . . . . . . . on
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ldB
CLEAR A
OFFSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
ENTER OFFSET
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300Hz
NOTE
[Ql] �
. . . . . . .
.
" . . . . . . . , [Q] �
Model 3585A