HP 8568B, Performance Tests And Adjustments Manual, Page: 257 / 313

24. Track and Hold Adjustments
AS ES
C A L A D J
I
10.
11.
‘ L E R M A T C H C A L O U T P U T
Figure 3-88. Location of Track and Hold Adjustments
Key in TRACE A
Adjust OFFS POS until MARKER A level indication as
indicated by CRT annotation flickers back and forth between .OO
and
12. Key in TRACE A
13. Adjust OFS NEG until MARKER A level indication as
indicated by CRT annotation flickers back and forth between .OO
and . 10
14. Key in TRACE A
15. Remove short from between and or remove
the SMB short from Reconnect cable 7 (violet) to
16. Connect the DVM to Connect 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 V dc
at
18. Disconnect DVM from instrument.
19. Key in TRACE A
(
CLEAR
-
WRITE
],
MARKER
MARKER In], SWEEP
20. Adjust T/H GAIN for GAIN for MARKER A level
indication as indicated by CRT annotation of 100
2 1. Key in TRACE A
22. Adjust GPOS for MARKER A level indication as
indicated by CRT annotation of 100 fO.l
23. Key in [SHIFT) TRACE A (VIEW)
Adjustments 3-143