
23. Track and Hold Adjustments
A3A9
TRACK AND HOLD
(Beneath Cover)
A3A9
Figure 3-103. Location of Track and Hold Adjustments
10. Key in
[m)
TRACE A
(jj)
b.
11. Adjust
A3A9R44
OFFS POS until MARKER A level indication as
indicated by CRT annotation flickers back and forth between .OO
and
.lO
dB.
12. Key in
ISHIFT_)
TRACE A (VIEW)
d.
13. Adjust
A3A9R36
OFS NEG until MARKER A level indication as
indicated by CRT annotation flickers back and forth between .OO
and
.lO
dB.
14. Key in
(SHIFT)
TRACE A
(jj)
e.
15. Remove short from between
A3A9TPl
and
A3A9TP3
or remove
the SMB short from A3A9Jl. Reconnect cable 7 (violet) to
A4AlJl.
16. Connect the DVM to
A4AlTP3.
Connect
DVM’s
ground to the IF
section’s casting.
17. Press (REFERENCE LEVEL] and adjust DATA knob and front-panel
AMPTD CAL adjust for a DVM indication of +2.000 fO.OO1 V dc
at
A4AlTP3.
18. Disconnect DVM from instrument.
19. Key in
Cm),
TRACE A
CCLEAR-WRITE],
MARKER
Cj),
MARKER
a],
SWEEP
ICONT).
20. Adjust
A3A9R57
T/II GAIN for GAIN for MARKER
A
level
indication as indicated by CRT annotation of 100 fO.l
dB.
21.
KeyinmTRACEA(jNIAX)b.
22. Adjust
A3A9R39
GPOS for MARKER A level indication as
indicated by CRT annotation of 100 fO.l
dB.
23. Key in
m
TRACE A
IVIEW)
d.
24. Adjust
A3A9R52
GNEG for MARKER A level indication as
indicated by CRT annotation of 100
f0.1
dB.
3-210
Adjustments
Commentaires sur ces manuels