Keysight U1271A - Page 44

1 Calibration Procedures
44 Keysight U1270 Series Service Guide
Resistance
SHORT
0 Ω
[b]
0 Ω from calibrator
30 MΩ
OPEN OPEN terminals
10.000 MΩ 0.9 to 1.1 × Reference value
3 MΩ 3.0000 MΩ 0.9 to 1.1 × Reference value
300 kΩ 300.00 kΩ 0.9 to 1.1 × Reference value
30 kΩ
30.000 kΩ
[b]
0.9 to 1.1 × Reference value
3 kΩ
3.0000 kΩ
[b]
0.9 to 1.1 × Reference value
300 Ω
300.00 Ω
[b]
0.9 to 1.1 × Reference value
30 Ω
30.000 Ω
[b]
0.9 to 1.1 × Reference value
SHORT
SHORT
[c]
SHORT Ω/COM terminals
Temperature K type 0000.0 °C 0 °C with ambient compensation required
Note: Ensure the multimeter is turned on and stabilized for at least 60 minutes with the K-type thermocouple connected
between the multimeter and the calibrator output terminal.
– Set the 5520A to internal reference.
– Prior to performing adjustment, connect one end of the K-type thermocouple (with miniature TC connector on both ends)
to the 5520A TC output, and the other end to a precision thermometer to verify that the source outputs the desired value.
Adjust the source accordingly if necessary.
– To perform the adjustment, connect one end of the K-type thermocouple (with miniature TC connector on both ends) to the
5520A TC output, and the other end to the multimeter via a TC-to-banana adapter. Allow at least 1 hour for the multimeter
to stabilize.
Diode
SHORT SHORT SHORT V/COM terminals
3 V 2.0000 V 0.9 to 1.1 × Reference value
[a] After capacitance calibration is completed, calibrate the OPEN item again by removing all cable connections from the Device-Under-Test (DUT).
[b] With a 2-wire connection and compensation enabled at the calibrator.
[c] After resistance calibration is completed, calibrate the SHORT item again by inserting a short bar between the Ω/COM terminals.
Table 1-3 Adjustment input values (continued)
Test function Step Reference value Valid reference input