Keysight Technologies 34980A

3 Calibration Procedures
46 Keysight 34980A Service Guide
AC VOLTS Gain Verification Test
Configuration: AC Volts
CONFigure[:VOLTage]:AC
LF 3 HZ:SLOW
[SENSe:]VOLTage:AC:BANDwidth 3
1 Make sure you have read “DMM Test Considerations” on page 42.
2 Set the AC VOLTS 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 indicated input
voltage and frequency. Compare measurement results to the appropriate test
limits shown in the table. (Be certain to allow for appropriate source settling.)
Input
Quick
Check
Error from Nominal
Vrms Frequency Range 24 hour 90 day 1 year
100 mV 1 kHz 100 mV ± 70 µV ± 90 µV ± 100 µV
100 mV 50 kHz Q ± 150 µV ± 160 µV ± 170 µV
1 V 1 kHz 1 ± 700 µV ± 900 µV ± 1 mV
1 V 50 kHz ± 1.5 mV ± 1.6 mV ± 1.7 mV
10 V 1 kHz 10 V ± 7 mV ± 9 mV ± 10 mV
10 V 50 kHz Q ± 15 mV ± 16 mV ± 17 mV
10 V 10 Hz ± 7 mV ± 9 mV ± 10 mV
10 mV
[1]
1 kHz 100 mV ± 34 µV ± 45 µV ± 46 µV
100 V 1 kHz 100 V Q ± 70 mV ± 90 mV ± 100 mV
100 V 50 kHz ± 150 mV ± 160 mV ± 170 mV
300 V 1 kHz 300 V ± 270 mV ± 390 mV ± 420 mV
300 V
[2]
50 kHz ± 600 mV ± 690 mV ± 720 mV
[1] For this test, isolate the calibrator’s output from earth ground to prevent ground noise affecting the reading.
[2] Some calibrators may have difficulty driving the internal DMM and cable load at this V-Hz output. Use short, low capacitance cable to
reduce calibration loading. Verification can be performed at >195 Vrms. New test limits can be computed from the accuracy specification
shown in the data sheet for the actual test conditions used.
Q: Quick performance verification test points.