Hp-Ib Adjustment - HP 3585A Service Manual

Model 3 585A
i. Press INSTRUMENT PRESET and check that the instrument calibrates. If it does not,
recheck all cable connections to the Input/Conversion Section.
j . Turn the 3585A power off and replace the bottom cover.
5·46. Tracking Generator Adjustments
a. Connect a Digital Voltmeter to A5 1 TP2.
b. Adjust A52C50 for + 4Vdc ± 0.5V.
c. Disconnect the Digital Voltmeter.
d. Using a short length of shielded cable, connect the Tracking Generator output to the
Terminated (500) input.
e. Set the Tracking Generator Amplitude control fully dockwise to the detent position
(OdBm).
f. Enter:
g. Adjust A52C 1 6 for the flattest amplitude response of the Tracking Generator output.
h. Enter:
1.
Adjust A52R68 for a marker reading of .OOdBm.
j . Disconnect the cable connecting the Tracking Generator to the input. This completes
the Tracking Generator Adjustments.
5·47. Hp·IB Adjustment
Instruments with serial numbers 1 750AOO976 and greater do not
require this ad justment.)
a. Turn the 3585A power off.
b. Remove the HP-IB board (A44, tabs
c. Note the voltage stamped on the Processor (UI 6),
INSTRUMENT PRESET
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OdBm
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I dB
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . 2dBm
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . 0dBm
RECALL 4
NOTE
yellow, yellow) from the card nest.
=
Vdc.
___
Adjustments
5-69