Fluke 5790A Service Manual page 97

Table 3-5. Calibration Steps in Periodic Calibration (cont.)
Step Name
1000 V Positive DC
1000 V Negative DC
700 V Positive DC
700 V Negative DC
220 V Positive DC
220 V Negative DC
70 V Positive DC
70 V Negative DC
22 V Positive DC
22 V Negative DC
7 V Positive DC
7 V Negative DC
2.2 V Positive DC
2.2 V Negative DC
700 mV Positive DC
700 mV Negative DC
220 mV Positive DC
220 mV Negative DC
70 mV Positive DC
70 mV Negative DC
22 mV Positive DC
22 mV Negative DC
7 mV Positive DC
7 mV Negative DC
2.2 mV Positive DC
2.2 mV Negative DC
LF (10 Hz) Linearity
LF (10 Hz) Linearity
Voltage to Apply
1000 V DC
-1000 V DC
600 V DC
-600 V DC
200 V DC
-200 V DC
60 V DC
-60 V DC
20 V DC
-20 V DC
6 V DC
-6 V DC
2 V DC
-2 V DC
600 mV DC
-600 mV DC
200 mV DC
-200 mV DC
60 mV DC
-60 mV DC
20 mV DC
-20 mV DC
6 mV DC
-6 mV DC
2 mV DC
-2 mV DC
2 V RMS, 10 Hz
600 mV RMS, 10 Hz
Tolerance Calibration
Source ( PPM)
3
3
3
3
3
3
3
5
10
35
100
350
1000
190
Calibration and Verification
Periodic Calibration
Purpose of
Calibration Step
Establishes gain and DC
offset for the 1000 V
range
Establishes gain and DC
offset for the 700 V
range
Establishes gain and DC
offset for the 220 V
range
Establishes gain and DC
offset for the 70 V range
Establishes gain and DC
offset for the 22 V range
Establishes gain and DC
offset for the 7 V range
Establishes gain and DC
offset for the 2.2 V range
Establishes gain and DC
offset for the 700 mV
range
Establishes gain and DC
offset for the 220 mV
range
Establishes gain and DC
offset for the 70 mV
range
Establishes gain and DC
offset for the 22 mV
range
Establishes gain and DC
offset for the 7 mV range
Establishes gain and DC
offset for the 2.2 mV
range
Generates a correction
for thermal sensor non-
linearity at low F and f
3
3-17