Keysight U1271A, Service Manual

Page: 32 / 63

1 Calibration Procedures
32 Keysight U1270 Series Service Guide
10
Resistance
Turn the rotary
switch to the / position.
30
Ω
[c][e]
30 Ω - ±0.070 Ω
300
Ω
[c][e]
300 Ω ±0.65 Ω ±0.65 Ω
3 k Ω
[c][e]
3 k Ω ±0.0065 k Ω ±0.0065 k Ω
30 k Ω
[e]
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
[d]
30 M
Ω
±0.365 M
Ω
±0.365 M
Ω
100 M Ω
[d]
100 M
Ω
±2.10 M
Ω
-
300 M Ω
[d]
120 M
Ω
- ±9.70 M
Ω
[c] 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.
[d] The RH is specified for <60%.
[e] 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
12
Capacitance [f]
Turn the rotary
switch to the position.
10 nF 10 nF ±0.105 nF ±0.105 nF
100 nF 100 nF ±1.02 nF ±1.02 nF
1000 nF 1000 nF ±10.2 nF ±10.2 nF
10 μ F 10 μ F ±0.102 μ F ±0.102 μ F
100
μ
F 100
μ
F ±1.02
μ
F ±1.02
μ
F
1000 μ F 1000 μ F ±10.2 μ F ±10.2 μ F
10 mF 10 mF ±0.102 mF ±0.102 mF
[f] 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).
Table 1-2 Performance verification tests (continued)
Step Test function Range 5520 output Error from nominal 1 year
U1271A U1272A/
U1273A/U1273AX
Smart
Scale
Null
Auto