Technical data

Performance Tests and Calibration 1

Performance Verification Tests

34450A Service Guide 11

Gain verification

This test checks the full- scale reading accuracy of the instrument.

Verification checks are performed only for functions and ranges with

unique gain calibration constants.

DC voltage gain verification test

1 Connect the calibrator to the front panel HI and LO input terminals

as shown in the figure below :

Short

Ohms 100 Ω

1 kΩ

10 kΩ

100 kΩ

1 MΩ

10 MΩ

100 MΩ

±8 mΩ

[2]

±80 mΩ

[2]

±500 mΩ

[2]

±5 Ω

±50 Ω

±500 Ω

±5 kΩ

[1] Select 5½ digit (slow mode) measurement resolution

[2] Specifications are for 4-W or 2-W ohms function using the Null math function enabled to

eliminate lead resistance. Without Null, add 0.2 Ω additional error.

Q = Quick performance verification test points

Table 1- 2 Zero offset verification test

Step Function

[1]

Range Quick Check Error from Nominal 1 year