HP 3562A Service Manual page 137

O D E L 3562A
C H I C P L G - A C
C H l = 2 m V / D i v
M T E X T / 1 0
M a i n = 9 9 0 u s / D i y
Figure 3-5 Both R408
adjustment
C H I C P L G - A C
C H I - 2
m V / D i v
M T E X T / 1 0
M a ; n = 9 9 0 u s / D i y
Figure 3-7 R422 needs adjustment (spikes
may extend down)
This completes the adjustment. If no more adjustments are to be made to this board, remove
the l ine power cord from the H P 3562A rear panel, remove the extender board and reinstall
the ADC board in the card cage.
Description:
3-7 ADC OFFSET AND REFERENCE ADJUSTMENT
This proced u re n u l ls the ADC's dc offset and optim izes its reference voltage.
The second pass ga in adjustment described in section 3-6 must
Equ i pment Required:
be completed before mak ing this adjustment.
Frequency Synthesizer , . . . . . , . . , . . . . . . , . . , ' H P 3325A
Oscilloscope . . . , . . . . , . . . . . , . . . . . . , . . . . . . . . H P 1 980 8
1 0:1 Oscilloscope Probe . . , . , . . , . . . . . . . . . , . . H P 1 001 4A
Extender board (part of kit 03562-84401 ) . . . . . . H P 03562-66542
Ad apter cable (part of kit 03562-84401 ) . . . . . . . H P 03585-61 61 6
&
R422 out of
NOTE
C H I C P L G - A C
C H I -
m V / D i v
2
M T E X T / 1 0
M a i n = 9 9 0 u s / D i y
R408 needs adjustment
Figure 3-6
C H I C P L G - A C
C H I - 2 m V / D i v
M T E X T / 1 0
M a ; n = 9 9 0 u s / D i y
Figure 3-8 Second pass gain adjustments
complete
ADJ U STMENTS
3-9