Technical data

Calibration Procedures 1
Performance Verification Tests
U1270 Series Service Guide 33
AC+DCmV Tur n th e
rotary switch to the
position, and press the
key twice.
300 mV 300 mV, 20 Hz - ±2.70 mV
300 mV, 45 Hz - ±2.35 mV
300 mV, 65 Hz - ±2.35 mV
300 mV, 1 kHz - ±2.70 mV
300 mV, 5 kHz - ±3.60 mV
300 mV, 20 kHz - ±3.75 mV
300 mV, 100 kHz - ±11.25 mV
10
Resistance Turn the
rotary switch to the /
position.
30 Ω
[3][5]
30 Ω - ±0.070 Ω
300 Ω
[3][5]
300 Ω ±0.65 Ω ±0.65 Ω
3 kΩ
[3][5]
3 kΩ ±0.0065 kΩ ±0.0065 kΩ
30 kΩ
[5]
30 kΩ ±0.065 kΩ ±0.065 kΩ
300 kΩ 300 kΩ ±0.65 kΩ ±0.65 kΩ
3 MΩ 3 MΩ ±0.0185 MΩ ±0.0185 MΩ
30 MΩ
[4]
30 MΩ ±0.365 MΩ ±0.365 MΩ
100 MΩ
[4]
100 MΩ ±2.10 MΩ -
300 MΩ
[4]
120 MΩ - ±9.70 MΩ
[3] The accuracy of the 30 Ω to 3 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 pressing
the key.
[4] The RH is specified for <60%.
[5] With a 2-wire connection and compensation enabled at calibrator.
11
Diode Turn the rotary
switch to the or
position.
3 V 3 V 0.0155 V 0.0155 V
Table 1 - 2 Performance verification tests (continued)
Step Test function Range 5520 output Error from nominal 1 year
U1271A U1272A/
U1273A/U1273AX
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