Keysight Technologies 34959A Service Manual page 52

3 Calibration Procedures
AC VOLTS Gain Verification Test
Configuration: AC Volts
1 Make sure you have read
2 Set the AC VOLTS function and the 3 Hz input filter. With the slow filter
3 Select each range in the order shown below. Provide the indicated input
Input
Vrms Frequency
100 mV 1 kHz
100 mV 50 kHz
1 V 1 kHz
1 V 50 kHz
10 V 1 kHz
10 V 50 kHz
10 V 10 Hz
[1]
1 kHz
10 mV
100 V 1 kHz
100 V 50 kHz
300 V 1 kHz
[2]
50 kHz
300 V
[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.
52
CONFigure[:VOLTage]:AC
LF 3 HZ:SLOW
[SENSe:]VOLTage:AC:BANDwidth 3
selected, each measurement takes 7 seconds to complete.
voltage and frequency. Compare measurement results to the appropriate test
limits shown in the table. (Be certain to allow for appropriate source settling.)
Range
100 mV
1
10 V
100 mV
100 V
300 V
"DMM Test Considerations"
Quick
Check
24 hour
± 70 µV
Q ± 150 µV
± 700 µV
± 1.5 mV
± 7 mV
Q ± 15 mV
± 7 mV
± 34 µV
Q ± 70 mV
± 150 mV
± 270 mV
± 600 mV
on page 48.
Error from Nominal
90 day
± 90 µV
± 160 µV
± 900 µV
± 1.6 mV
± 9 mV
± 16 mV
± 9 mV
± 45 µV
± 90 mV
± 160 mV
± 390 mV
± 690 mV
Keysight 34980A Service Guide
1 year
± 100 µV
± 170 µV
± 1 mV
± 1.7 mV
± 10 mV
± 17 mV
± 10 mV
± 46 µV
± 100 mV
± 170 mV
± 420 mV
± 720 mV