Fluke 8508A, Руководство по обслуживанию

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Calibration and Verification
Routine Calibration
3
3-17
Table 3-4. AC Voltage Calibration Points and Sequence
8508A Range Point Voltage Frequency
Zero (5 % Range) 10 mV 1 kHz
Range Gain LF 100 mV 1 kHz
200 mV
Range Gain HF 100 mV 60 kHz
Zero (0.5 % Range) 10 mV 1 kHz
Range Gain LF 1V 1 kHz
2 V
Range Gain HF 1V 60 kHz
Zero (0.5 % Range) 100 mV 1 kHz
Range Gain LF 10 V 1 kHz
20 V
Range Gain HF 10 V 60 kHz
Zero (0.5 % Range) 1 V 1 kHz
Range Gain LF 100 V 1 kHz
200 V
Range Gain HF 100 V 60 kHz
Zero (0.5 % Range) 5 V 1 kHz
Range Gain LF 500 V 1 kHz
1000 V
[1]
Range Gain HF 500 V 30 kHz
[1] 1000V range Gain calibrations may be performed at voltages above 500V. The 1000V range Gain and Zero
calibrations should be performed together, with the Zero cal performed at 1 % of the nominal value used for Gain
cal.
The procedure assumes the user has knowledge of the actual output value of the
calibrator at each point, from a measurement or from a certificate of calibration. The
Set
feature allows a user to enter the true output value of the calibration standard where it
differs from the nominal point. If the calibrator output is considered to be exactly
nominal, use of the
Set
feature is not required, also omit steps 3-5.
On each range, the Multimeter automatically recognizes the appropriate value as range
zero from the applied signal amplitude, and automatically recognizes the range LF and
HF gain points from the applied signal frequency.
1.
On the Multimeter, select the required Range.
2. On the Calibrator select Output Voltage and Frequency, Operate
3. On the Multimeter, Press
CAL
to revert to
CALIBRATION
menu.
4. Select
Set
on the
CALIBRATION menu
.
5. Use the numeric keys with the
SET VALUE
menu to key in the true output value of
the calibrator, then press Enter.
6. Press
SAMPLE
to initiate the calibration operation.
Calibration is complete when the
Busy
legend goes out and the calibrated
measurement is displayed Note that HF gain calibrations are iterative, and repeating
the HF calibration may improve the result.
7. On the Calibrator, set Output to
STANDBY
.
8. On the Multimeter, press
ACV
key to revert to the ranges menu.