Calibration Procedures
1
Performance Verification Tests
U1270 Series Service Guide
33
AC+DCmV
Turn the
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 k
Ω
[3][5]
3 k
Ω
±0.0065 k
Ω
±0.0065 k
Ω
30 k
Ω
[5]
30 k
Ω
±0.065 k
Ω
±0.065 k
Ω
300 k
Ω
300 k
Ω
±0.65 k
Ω
±0.65 k
Ω
3 M
Ω
3 M
Ω
±0.0185 M
Ω
±0.0185 M
Ω
30 M
Ω
[4]
30 M
Ω
±0.365 M
Ω
±0.365 M
Ω
100 M
Ω
[4]
100 M
Ω
±2.10 M
Ω
-
300 M
Ω
[4]
120 M
Ω
-
±9.70 M
Ω
[3] The accuracy of the 30
Ω
to 3 k
Ω
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
Shift
View
Esc
Smart
Scale
Null
Auto
Содержание U1270 Series
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Страница 55: ...Service and Maintenance 2 Checking the Fuse U1270 Series Service Guide 55 Figure 2 1 Testing Fuse 1 Smart Smart...
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Страница 58: ...2 Service and Maintenance Fuse Replacement 58 U1270 Series Service Guide Figure 2 3 Replacing Fuse 1 1 2 3...
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