Fluke 8508A User Manual page 166

8508A
Users Manual
8508A Range
200 mV
2 V
20 V
200 V
1000 V
1. 1000V range Gain adjustments may be performed at voltages above 500V. The 1000V range Gain and Zero
adjustments 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
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
steps 4, 8, and 12. Adjusting the 1000V range at the recommended 500V requires a Set
Value of 500 before the Zero cal.
On each range, the 8508A 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 8508A, select the required range.
2. On the Calibrator, select the Range Zero point Output Voltage and Frequency.
3. On the 8508A, press
4. If the Set feature is being used:
5. Press
6. On the Calibrator, select the Range Gain LF point Output Voltage and Frequency.
7. On the 8508A, press
6-18
Table 6-4. AC Voltage Adjustment Points and Sequence
Point
Zero (5 % Range)
Range Gain LF
Range Gain HF
Zero (0.5 % Range)
Range Gain LF
Range Gain HF
Zero (0.5 % Range)
Range Gain LF
Range Gain HF
Zero (0.5 % Range)
Range Gain LF
Range Gain HF
1
Zero (0.5 % Range)
Range Gain LF
Range Gain HF
feature is not required when adjusting at full range, also omit
Set
Select to operate the calibrator output.
OPR
CAL
On the 8508A, select Set on the
Use the numeric keys with the
calibrator at the range zero point, then press Enter.
to initiate the adjustment operation.
SAMPLE
Adjustment is complete when the busy legend goes out and the adjusted
measurement is displayed.
CAL
Voltage
10 mV
100 mV
100 mV
10 mV
1V
1V
100 mV
10 V
10 V
1 V
100 V
100 V
5 V
500 V
500 V
to enter the Calibration Menu.
Menu.
CALIBRATION
menu to enter the true output value of the
SET VALUE
to enter the Calibration Menu.
Frequency
1 kHz
1 kHz
60 kHz
1 kHz
1 kHz
60 kHz
1 kHz
1 kHz
60 kHz
1 kHz
1 kHz
60 kHz
1 kHz
1 kHz
30 kHz
Set