8508A
Users Manual
Table 6-9. AC Voltage Verification Points and Sequence (cont)
8508A Range Voltage Frequency 8508A Filter Tolerance
1
200V 100 V 20 Hz 10 Hz ± 0.0144 V
100 V 55 Hz 40 Hz ± 0.0119 V
100 V 1 kHz 40 Hz ± 0.0099 V
100 V 3 kHz 40 Hz ± 0.0119 V
100 V 10 kHz 40 Hz ± 0.0119 V
100 V 30 kHz 40 Hz ± 0.0295 V
100 V 60 kHz 40 Hz ± 0.0795 V
100 V 100 kHz 40 Hz ± 0.0795 V
1000 V 500 V 55 Hz 40 Hz ± 0.088 V
500 V 1 kHz 40 Hz ± 0.088 V
500 V 3 kHz 40 Hz ± 0.088 V
500 V 10 kHz 40 Hz ± 0.088 V
500 V 30 kHz 40 Hz ± 0.223 V
1000 V 1 kHz 40 Hz ± 0.331 V
1000 V 30 kHz 40 Hz ± 1.476 V
1. Based on 365 day Tcal ±1°C 99 %CL Absolute specifications. See comments in Applicable Verification Tolerance section above
regarding the impact of calibration uncertainties and use of other specifications.
Resistance Checks
When verifying the resistance function, each of the resistance modes (NormalΩ, TruΩ,
LoIΩ and HiVΩ) must be individually checked. The following procedure assumes use of
a multifunction calibrator and verifies each resistance mode in turn, range by range. If
individual standard resistors are used it may be more convenient to check all the modes in
turn for each resistance value to avoid connecting the same resistance standard several
times during the sequence. A 1 GΩ standard resistor is used for ranges above 200 MΩ as
the highest resistance available from the 5720A calibrator is 100 MΩ.
In order to minimize connection changes it is recommended that all measurements using
the 1 GΩ Standard resistor are performed together after all other resistance points.
6-42
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