Agilent Technologies 3458A Repair Manual

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.
Assemblies Removal/Installation Procedures
The procedures to replace the 3458A printed circuit board assemblies are
found in Chapter 3 of this manual.
3458A Technical Description
General Description 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
Table 8. Adjustments/Calibration Needed after Assembly
Replacement
Ref Desig Agilent Part
Number
Assembly
Description
Adjustments Needed
A1 03458-66501 DC circuitry Offset, DC Gain,
Resistance, and DC
Current Adjustments
A2 03458-66502 AC converter AC Adjustment
A3 03458-66503 A/D converter and
inguard logic
Offset, DC Gain,
Resistance, DC Current,
and AC Adjustments
A4 03458-66504 Inguard power
supply
ACAL ALL
A5 03458-66505 Outguard
Controller
Offset, DC Gain,
Resistance, DC Current
and AC Adjustments
A5 03458-66515 Outguard
Controller
(Opt 001)
Offset, DC Gain,
Resistance, DC Current,
and AC Adjustments
A6 03458-66506 Outguard power
supply
ACAL ALL
A7 03458-66507 Display logic ACAL ALL
A9 03458-66509 DC reference Offset, DC Gain,
Resistance, and DC
Current Adjustments
A9 03458-66519 DC reference
(Opt 002)
Offset, DC Gain,
Resistance, and DC
Current Adjustments
A10 03458-66510 Front/rear switch Offset Adjustments,
ACAL ALL

Agilent Technologies 3458A Specifications

General

Brand	Agilent Technologies
Model	3458A
Category	Multimeter
Language	English