Assemblies Removal/Installation Procedures; 3458A Technical Description; General Description - Agilent Technologies 3458A Repair Manual

Assemblies Removal/Installation Procedures

3458A Technical Description

General Description

68 Chapter 4 Assembly Level Troubleshooting
Table 8 lists the 3458A assemblies and the required adjustments/calibration
after assembly replacement. For information on how to adjust/calibrate the
3458A, refer to the 3458A Calibration Manual.
Table 8. Adjustments/Calibration Needed after Assembly
Ref Desig Agilent Part
A1 03458-66501
A2 03458-66502
A3 03458-66503
A4 03458-66504
A5 03458-66505
A5 03458-66515
A6 03458-66506
A7 03458-66507
A9 03458-66509
A9 03458-66519
A10 03458-66510
The procedures to replace the 3458A printed circuit board assemblies are
found in Chapter 3 of this manual.
The 3458A is a very high precision digital multimeter that can measure AC
or DC volts, AC or DC current, AC+DC volts, AC+DC current, resistance,
period, and frequency.
The 3458A can also perform complex math calculations. Its maximum
reading rate is 100,000 readings/sec. The maximum input voltage is
1000 V peak with 4 1/2 to 8 1/2 digit resolution.
The multimeter has a digitizing function that converts continuous analog
Replacement
Assembly
Number Description
DC circuitry
AC converter
A/D converter and
inguard logic
Inguard power
supply
Outguard
Controller
Outguard
Controller
(Opt 001)
Outguard power
supply
Display logic
DC reference
DC reference
(Opt 002)
Front/rear switch
Adjustments Needed
Offset, DC Gain,
Resistance, and DC
Current Adjustments
AC Adjustment
Offset, DC Gain,
Resistance, DC Current,
and AC Adjustments
ACAL ALL
Offset, DC Gain,
Resistance, DC Current
and AC Adjustments
Offset, DC Gain,
Resistance, DC Current,
and AC Adjustments
ACAL ALL
ACAL ALL
Offset, DC Gain,
Resistance, and DC
Current Adjustments
Offset, DC Gain,
Resistance, and DC
Current Adjustments
Offset Adjustments,
ACAL ALL