Calibration Procedures 3
Keysight 34420A Service Guide 85
4 100 V Voltage/ Channel 1 100V 1.4 mV 3 mV 4mV
5 100mV
Voltage/ Channel 2
[a]
100mV 1.8µV 3.4µV 4.4µV
61 V
Voltage/ Channel 2
[a]
1 V 13µV 29µV 39µV
Q 7 10 V
Voltage/ Channel 2
[a]
10V 30µV 240µV 340µV
81 Ω 4-wire Ohms 1 Ω 17 µΩ 52 µΩ 72 µΩ
9 10 Ω 4-wire Ohms 10 Ω 110 µΩ 420 µΩ 620 µΩ
10 100 Ω 4-wire Ohms 100 Ω 1.7 mΩ 4.2 mΩ 6.2 mΩ
Q11 1 kΩ 4-wire Ohms 1 kΩ 17 mΩ 42 mΩ 62 mΩ
12 10 kΩ 4-wire Ohms 10 kΩ 170 mΩ 420 mΩ 620 mΩ
13 100 kΩ 4-wire Ohms 100 kΩ 1.8 Ω 4.4 Ω 6.4 Ω
14 1 MΩ 4-wire Ohms 1 MΩ 23 Ω 54 Ω 74 Ω
15 1 Ω Low Power Ohms 1 Ω 17 µΩ 52 µΩ 72 µΩ
16 10 Ω Low Power Ohms 10 Ω 170 µΩ 420 µΩ 620 µΩ
17 100 Ω Low Power Ohms 100 Ω 1.7 m
Ω 4.2 mΩ 6.2 mΩ
18 1 kΩ Low Power Ohms 1 kΩ 17 mΩ 42 mΩ 62 mΩ
19 10 kΩ Low Power Ohms 10 kΩ 190 mΩ 440 mΩ 640 mΩ
20 100 kΩ Low Power Ohms 100 kΩ 2.1 Ω 5.5 Ω 7.5 Ω
21 1 MΩ Low Power Ohms 1 MΩ 23 Ω 54Ω 74 Ω
22 10Ω Voltage Limited Ohms 10Ω 220 µΩ 520 µΩ 720 µΩ
23 100 Ω Voltage Limited Ohms 100 Ω 2.7 mΩ 5.2 mΩ 7.2 mΩ
Optional 2-wire Ohms All
Use 4-wire Ohms specifications
[b]
[a] Channel 2 can be verified only, no channel 2 gain calibration exists. Channel 2 gain calibration is derived from channel 1 gain calibration.
[b] For 2-wire Ohms with Null ON (within± 1°C of NULL), add 2 mΩ to the listed specification. If null is not used, add 0.2 Ω to the listed
specification.
Table 3-2 Gain Verification Procedure
± Error From Full Scale
Step# Calibrator Output Function/Channel Range 24 hours 90day 1 year
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