HP 8566B Adjustment Manual page 191

3. Preliminary Display Adjustments (SN 3001A and Below)
12. Set the oscilloscope controls as follows:
Press (CHAN]:
Channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
amplitude scale
offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..25.0000 V
Channel 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
amplitude scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..lO.OV/di v
offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..60.000 0 V
Press ITRIG):
source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.0000 V
Press (TIME]:
time scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50.0 ns/div
delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125.000 ns
Press (-1:
connect dots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..on
Press ISHOW).
13. Set the spectrum analyzer front-panel INTENSITY control fully
counterclockwise, and then set
14. The X+ deflection and X- deflection waveforms should be
superimposed on the oscilloscope display, as shown in Figure 3-19.
If necessary, adjust AlA4R7 X POSN and AlA4R27 X GAIN for a
centered display of at least four vertical divisions. See Figure 3-18
for the location of the adjustments.
- 1 2 5 . 0 0 0 " s
Figure 3-19. X + and X- Waveforms
15. Set the oscilloscope controls as follows:
Press
MATH
f l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
math . . . . . . . . . . . . . . . . . . . . . . . . . . . . .channel 1 - channel 4
sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...25.0 V/div
16. Three waveforms should be displayed on the oscilloscope, as
shown in Figure 3-20. The lower composite waveform represents
the
LINE switch to ON.
--
1 2 5 . 0 0 0 "s 3 7 5 . 0 0 0 ns
5 0 . 0 ns/dtv
):
1 0 . 0 Vfdtv
1 0 . 0 V/div
10.00 : 1 d c
25.00 v
Adjustments 3-51