Calibration Procedures 4
Keysight 34970A/34972A Service Guide 85
AC CURRENT Gain Verification Test
Configuration: AC Current
LF 3 HZ:SLOW (in the Advanced menu)
1 Make sure you have read “Test Considerations” on page 76.
2 Select Channel 221, set the AC CURRENT function and the 3 Hz input filter.
With the slow filter selected, each measurement takes 7 seconds to complete.
Before executing each test, you must press to enable reading monitoring
on the selected channel (or use the ROUTe:MON command from the remote
interface).
3 Select each range in the order shown below. Compare measurement results to
the appropriate test limits shown in the table. (Be certain to allow for
appropriate source settling.)
The 50 kHz AC voltage test points may fail performance verification if the
internal shields have been removed and reinstalled. See “Gain Adjustment” on
page 89, for further information on how to recalibrate the AC voltage function.
Input
Range
Quick
Check
[a]
[a] Q: Quick performance verification test points.
Error from Nominal
Current Frequency 24 hour 90 day 1 year
10 mA
[b]
100 mA
[b]
10 mA
1 A
[b]
[b] Verify only, no adjustment.
1 kHz
1 kHz
1 kHz
1 kHz
10 mA
100 mA
1 A
1 A
Q
± 14 mA
± 600 mA
± 1.41 mA
± 1.4 mA
± 14 mA
± 600 mA
± 1.41 mA
± 1.4 mA
± 14 mA
± 600 mA
± 1.41 mA
± 1.4 mA
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