Fluke 5790A Service Manual page 117

Table 3-10. Calibration Steps in Service Calibration (cont.)
Step Name
2.2 mV Positive DC
2.2 mV Negative DC
700 V I2/I1 100 kHz
(Input 1)
700 V I2/I1 100 kHz
(Input 2)
22 V I2/I1 1 MHz
(Input 1)
22 V I2/I1 1 MHz
(Input 2)
2.2 V I2/I1 1 MHz
(Input 1)
2.2 V I2/I1 1 MHz
(Input 2)
Frequency Adjustment
LF (10 Hz) Linearity
LF (10 Hz) Linearity
1 kV AC 1 kHz
1 kV AC 20 kHz
1000 V AC 100 kHz
700 V AC 1 kHz
700 V AC 20 kHz
700 V AC 100 kHz
220 V AC 1 kHz
220 V AC 20 kHz
220 V AC 300 kHz
Voltage to Apply
2 mV DC
-2 mV DC
219 V RMS, 100 kHz
219 V RMS, 100 kHz
20 V RMS, 1 MHz
20 V RMS, 1 MHz
2.0 V RMS, 1 MHz
2.0 V RMS, 1 MHz
2V rms, 1 kHz (measure
with PM6666 counter)
2 V RMS, 10 Hz
0.6 V RMS, 10 Hz
1000 V RMS, 1 kHz
1000 V RMS, 20 kHz
1000 V RMS, 100 kHz
600 V RMS, 1 kHz
600 V RMS, 20 kHz
200 V RMS, 100 kHz
200 V RMS, 1 kHz
200 V RMS, 20 kHz
60 V RMS, 300 kHz
Tolerance of
Calibration Source
( PPM)
1000
1 %, and 1 minute
stability better than
50 ppm
1 %, and 1 minute
stability better than
50 ppm
1 %, and 1 minute
stability better than
50 ppm
1 %, and 1 minute
stability better than
50 ppm
1 %, and 1 minute
stability better than
50 ppm
1 %, and 1 minute
stability better than
50 ppm
10 ppm or better
190
25
27
70
27
30
70
18
18
130
Calibration and Verification
Service Calibration
Purpose of
Calibration Step
Establishes gain and DC
offset for the 2.2 mV
range
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the 1 kV divider
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the 1 kV divider
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the 220 V divider
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the 220 V divider
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the protection
circuit
Calibrates the relative
frequency response of
INPUT 1 and INPUT 2
through the protection
circuit
calibrates timebase
accuracy
Generates a correction
for thermal sensor non-
linearity at low V and f
Generates flatness
calibration data for the
1000 V range
Generates flatness
calibration data for the
1000 V range
Generates flatness
calibration data for the
220 V range
3
3-37