Technical data

58 34980A Service Guide

3 Calibration Procedures

AC CURRENT Gain Verification Test

Configuration: AC Current 

CONFigure:CURRent:AC 

LF 3 HZ:SLOW

[SENSe:]CURRent:AC:BANDwidth 3

Make sure you have read “DMM Test Considerations" on page 53.

2 Set the AC CURRENT function and the 3 Hz input filter. With the slow

filter selected, each measurement takes 7 seconds to complete.

3 Select each range in the order shown below. Provide the input current

and frequency indicated. Compare measurement results to the

appropriate test limits shown in the table. (Be certain to allow for

appropriate source settling.)

[1] Verify only, no adjustment.

Q: Quick performance verification test points.

NOTE

The 50 kHz ac voltage test points may fail performance verification if

the DMM internal shields have been removed and reinstalled. See “Gain

Adjustment" on page 61 for further information on how to recalibrate

the ac voltage function.

Input Quick

Check

Error from Nominal

Current Frequency Range 24 hour 90 day 1 year

10 mA

[1]

1 kHz 10 mA ± 14 µA ± 14 µA ± 14 µA

100 mA

[1]

1 kHz 100 mA Q ± 600 µA ± 600 µA ± 600 µA

10 mA 1 kHz 1 A ± 1.41 mA ± 1.41 mA ± 1.41 mA

[1]

1 kHz 1 A ± 1.4 mA ± 1.4 mA ± 1.4 mA