HP 3562A Service Manual page 129

O D E L 3562A
This section describes adj ustments and checks required to bring the H P 3562A within the
3-1 INTRODUCTION
specifications l isted in Table
ments specified for that board should made in the order shown in Tab le 3-1 . These pro­
ced ures shou ld be performed if the specifications of Table
to do so in the trou bleshooting section, or after com ponent replacement. These procedures
shou ld not be performed as routine maintenance.
A llow the HP 3562A to warm up for an hour before performing
any adjustments. This is not critical for most of the adjustments
due to the automatic calibration feature. It is important when set­
ting the reference and calibrator.
The adjustments described for the ADC and input boards apply
to both channel one and channel two of the ana lyzer front end.
Adjustment Name
Power supply shut-down level
20.48 MHz reference
2nd pass offset
2nd pass gain
ADC offset
ADC reference
Track-&-ho ld offset
I n put dc offset side A
I n put dc offset side B
I nput attenuators:
side A 40 d B
side A 20 d B
side B 40 d B
side B 20 d B
Sou rce dc offset
Cali brator gain
Table l ists the equ ipment required for the adjustment procedures. Any equipment which
3-2 EQUIPMENT REQUIRED
meets the critical specifications given in the table may be substituted for the recommended
model.
1 -2
SE CTI O N I I I
ADJ USTM E NTS
If adjustments are made to a particu lar board, all adjust­
1 -1 .
NOTE
Table 3-1 Adjustment Components
Pwr supply
Trigger
ADC
ADC
ADC
ADC
ADC
I nput
I nput
I nput
I nput
I nput
I nput
Sou rce
Source
are not met, if instru cted
1 -1
Board Component
A1 8R1
A31 R208
A32 R408
A32 R422
A32 R400
A32 R401
A32 R408
A33R21 2
A33R1 1 2
A33C206
A33C202
A33C1 06
A33C1 02
A30R9
A30R1 0
ADJ USTM E NT S
3-1