1 Calibration Procedures
Performance Verification Tests
10 U1231A/U1232A/U1233A Service Guide
5
Resistance Turn the rotary
switch to the position.
600 Ω
[2]
600 Ω ±5.7 Ω ±5.7 Ω ±5.7 Ω
6 kΩ
[2]
6 kΩ ±0.057 kΩ ±0.057 kΩ ±0.057 kΩ
60 kΩ 60 kΩ ±0.57 kΩ ±0.57 kΩ ±0.57 kΩ
600 kΩ 600 kΩ ±5.7 kΩ ±5.7 kΩ ±5.7 kΩ
6 MΩ
[3]
6 MΩ ±0.057 MΩ ±0.057 MΩ ±0.057 MΩ
60 MΩ
[3]
60 MΩ ±0.93 MΩ ±0.93 MΩ ±0.93 MΩ
[2] The accuracy of the 600 Ω to 6 kΩ range is specified after the Null function is used to subtract the test lead resistance
and thermal effect (by shorting the test leads). Apply a 0 Ω calibrator output and allow the multimeter to settle before you
press the key.
[3] The RH is specified for <60%.
6
Diode Turn the rotary
switch to the position.
2 V 2 V 0.020V 0.020V 0.020V
7
Capacitance
[4]
Turn the
rotary switch to the , ,
or position.
1000 nF 1000 nF ±21 nF ±21 nF ±21 nF
10 μF10 μF ±0.21μF ±0.21μF ±0.21μF
100 μF100 μF ±2.1 μF ±2.1 μF ±2.1 μF
1000 μF 1000 μF±21 μF±21 μF±21 μF
10 mF 10 mF ±0.21 mF ±0.21 mF ±0.21 mF
[4] The accuracy for all ranges is specified based on a film capacitor or better, and after the Null function is used to subtract
the residual values (by opening the test leads).
8
Scale
[5]
While the rotary
switch is in the or
position, press the
key (until mV is shown on
the display).
600 mV 600 mV 3.2 mV 3.2 mV -
600 mV 600 mV, 70 Hz 6.3 mV 6.3 mV -
[5] AC/DC mV measurement must be enabled prior to this step. Refer to the “Enable the AC/DC mV measurement” section
of Chapter 4, “Multimeter Setup Options” in the U1231A/U1232A/U1233A User’s Guide for further information on how to
enable the AC/DC mV measurement.
Table 1 - 2 Performance verification tests (continued)
Step Test function Range 5520 output
Error from nominal 1 year
U1231A U1232A U1233A