First Crystal Stage Adjustment - HP 3585A Service Manual

Spectrum analyzer
Hide thumbs Also See for 3585A:
Table of Contents

Advertisement

Model 3585A
d. Set the -hp- 3585A to:
OFFSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . off
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . I Hz
RES BW . . . . . . . . . . . . . . . . . . .
RES BW . . . . . . . . .
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l kHz
dB/DIy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I dB
A-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
e. Adjust Al l L7 so that the trace approximates a straight, horizontal line. (See Figure
7-3 .)
f. Set the -hp- 3585A to:
A-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . off
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50kHz
dB/DIy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0dB
g. Adjust A l l C39 so that the trace is symmetrical about the marker. (See Figure 7-4.)
h. Set the -hp- 3585A to:
dB/DIy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I dB
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l kHz
i. Adjust Al l L8 for a maximum marker amplitude.
j . Place jumper A I I J4 to the "OP" position.
7 · 1 9. First Crystal Stage Adjustment IA· 1 1 : L6 and C29)
a. DO NOT TURN POWER OFF. Place jumper AI I J5 to the "T" position.
b . Set the -hp- 3585A to:
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l kHz
dB/DIy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I dB
A-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
c. Adjust AI I L6 so that the trace approximates a straight, horizontal line. (See Figure
7-3 .)
d. Set the -hp- 3585A to:
A-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . off
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50kHz
dB/DIy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0dB
e. Adjust A l lC29 so that the trasce is symmetrical about the marker. (See Figure 7-4.)
f. Place jumper AI I J5 to the "OP" position.
. . . . . . . . . . . . . . . . . . . . . . . [Q] I@l
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300Hz
.
Sc ans by ARTEK M EDIA =>
Backdating
7-9

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents