HP 3585A Service Manual page 168

Model 3585A
bb. Adjust the REF LEVEL as necessary to keep the marker near the cent er of the screen.
cc. Adjust the l00.35MHz Passband Filter using A3L7, L5, L3 and L 1 . Adjust for the
maximum marker amplitude possible.
dd. Adjust the 1O.35MHz Passband Filter using A5L6, L4, L2 and A4L 7. Adjust these
controls for a peak display of signal.
ee. Set the 3585A controls for:
ff. Adjust the Stopband of the 1O.35MHz Filter using A5L5, L3 and L 1 . Adjust for a
minimum marker amplitude reading. Adjustment should yileld a marker amplitude reading
less than -95dBm.
gg. Using RECALL I , repeat step dd; and using RECALL 2 repeat step ff. Repeat until
no further improvements can be made.
hh. Set the 3585A controls for:
ii. Adjust the 350kHz filter using A5T3 and T4. Adjust for a maximum marker amplitude
reading.
jj . Move test jumper A2J5 to the "TEST" position.
kk. Adjust the REFERENCE LEVEL as necessary to keep the marker near midscreen.
11 .
Adjustment of the first half of the l00.35MHz Passhand Filter is accomplished using
A2L7, L8, L 1 1 and L 1 2. Adjust these components for a maximum marker amplitude
reading. A2L 7 and L8 are bendable wire inductor adjustments.
mm. Move test jumper A2J5 back to the "NORM" position.
nn. Adjust the REFERENCE LEVEL as necessary to keep the marker near midscreen.
MANUAL FREQUENCY . . . . . . . . . . . . . . . . . . 8.3MHz
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - l OdBm
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10dB
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Hz
VIDEO BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I Hz
SAVE 2
Disregard Input Overload indicator.
PRESET (RBW -VBW -ST)
MANUAL FREQUENCY . . . . . . . . . . . . . . . . . . . . 9MHz
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OdBm
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I dB
CLEAR A
NOTE
Adjustments
5-53