Keithley 2002, Calibration Manual

Page: 16 / 114

Performance Verification
1-5
6. Set the calibrator output to 0.00000mVDC, and allow
the reading to settle.
7. Enable the Model 2002 REL mode. Leave REL enabled
for the remainder of the DC volts verification test.
8. Set the calibrator output to +190.00000mVDC, and
allow the reading to settle.
9. Verify that the Model 2002 reading is within the limits
summarized in Table 1-2.
10. Repeat steps 8 and 9 for the remaining ranges and volt-
ages listed in Table 1-2.
11. Repeat the procedure for each of the ranges with nega-
tive voltages of the same magnitude as those listed in
Table 1-2.
Table 1-2
Limits for DCV verification
2002
DCV
Range
Applied DC
Voltage
Reading Limits
(1 year, 18° to 28°C)
200mV 190.000000mV 189.991911mV to 190.008089mV
2V 1.90000000V 1.89996058 to 1.90003942V
20V 19.0000000V 18.9996550V to 19.0003450V
200V 190.000000V 189.993691V to 190.006309V
1000V 1000.0000V 999.94640V to 1000.05360V
NOTES:
1. Repeat procedure for negative voltages of same magnitude.
2. Reading limits shown include total absolute uncertainty of recommended
calibrator (see Table 1-1) and factory calibration uncertainty (see
specifications).
Figure 1-1
Connections for DC volts verification
2002 MULTIMETER
Output HI
Input
LO
Output
LO
Model 2002
5700A Calibrator (Output DC Voltage)
Note : Use shielded, low-thermal cables
when testing 200mV and 2V ranges.
Input HI