34420A Datasheet, PDF (3/6 Pages) Agilent(Hewlett-Packard) – NanoVolt/Micro-Ohm Meter

03 | Keysight | 34420A NanoVolt/Micro-Ohm Meter - Data Sheet
Speciications
Accuracy Speciications ±(% of reading + % of range)¹
Function
Range²
Test
24-Hour
Current 23 °C ± 1 °C
90 Day
23 °C ± 5 °C
1 Year
23 °C ± 5 °C
Temperature
Coeficient
28 °C—55 °C
dc Voltage
1.0000000 mV³
10.000000 mV³
100.00000 mV
1.0000000 V
10.000000 V
100.00000 V⁴
0.0025 + .0020
0.0025 + .0020
0.0015 + .0003
0.0010 + .0003
0.0002 + .0001
0.0010 + .0004
0.0040 + .0020
0.0040 + .0002
0.0030 + .0004
0.0025 + .0004
0.0020 + .0004
0.0025 + .0005
0.0050 + .0020
0.0050 + .0003
0.0040 + .0004
0.0035 + .0004
0.0030 + .0004
0.0035 + .0005
0.0004 + .0001
0.0004 + .0001
0.0004 + .00006
0.0004 + .00004
0.0001 + .00002
0.0004 + .00005
Resistance⁵
1.0000000 Ω
10.000000 Ω
100.00000 Ω
1.0000000 KΩ
10.000000 KΩ
1.0000000 MΩ
100.00000 KΩ
10 mA
10 mA
10 mA
1 mA
100 μA
10 μA
5 μA
0.0015 + .0002
0.0015 + .0002
0.0015 + .0002
0.0015 + .0002
0.0015 + .0002
0.0015 + .0003
0.0020 + .0003
0.0050 + .0002
0.0040 + .0002
0.0040 + .0002
0.0040 + .0002
0.0040 + .0002
0.0040 + .0004
0.0050 + .0004
0.0070 + .0002
0.0060 + .0002
0.0060 + .0002
0.0060 + .0002
0.0060 + .0002
0.0060 + .0004
0.0070 + .0004
0.0005 + .00002
0.0005 + .00001
0.0005 + .00001
0.0005 + .00001
0.0005 + .00001
0.0005 + .00002
0.0006 + .00003
Low Power
Resistance⁵
1.0000000 Ω
10.000000 Ω
100.00000 Ω
1.0000000 KΩ
10.000000 KΩ
1.0000000 MΩ
100.00000 KΩ
10 mA
10 mA
1 mA
100 μA
10 μA
5 μA
5 μA
0.0015 + .0002
0.0015 + .0002
0.0015 + .0002
0.0015 + .0002
0.0015 + .0004
0.0015 + .0012
0.0020 + .0003
0.0050 + .0002
0.0040 + .0002
0.0040 + .0002
0.0040 + .0002
0.0040 + .0004
0.0040 + .0015
0.0050 + .0004
0.0070 + .0002
0.0060 + .0002
0.0060 + .0002
0.0060 + .0002
0.0060 + .0004
0.0060 + .0015
0.0070 + .0004
0.0005 + .00002
0.0005 + .00001
0.0005 + .00001
0.0005 + .00001
0.0005 + .00001
0.0005 + .00003
0.0006 + .00003
Voltage Limited 10.000000 Ω
Resistance^{5, 6} 100.00000 Ω
1 mA
0.0020 + .0002
100 μA 0.0025 + .0002
0.0050 + .0002
0.0050 + .0002
0.0070 + .0002
0.0070 + .0002
0.0005 + .00002
0.0005 + .00002
Channel 1 / Channel 2 (dcV Ratio) Ratio Error in % = Channel 1 accuracy in % + Channel 2 accuracy in %
Channel 1-Channel 2 (dcV Difference) Difference Error = Channel 1 (% of reading + % of range) + Channel 2 (% of reading + % of range)
Temperature (resolution = 0.001 °C)
SPRT⁷
RTD
Thermistor
Thermocouple⁸
SPRT Probe Accuracy + 0.003°C
RTD Probe Accuracy + 0.05°C
Thermistor Probe Accuracy + 0.1°C
Thermocouple Probe Accuracy + 0.2°C
Maximum
per Lead
Resistance
1Ω
1Ω
10 Ω
100 Ω
1 KΩ
1 KΩ
1 KΩ
1Ω
1Ω
10 Ω
100 Ω
1 KΩ
1 KΩ
1 KΩ
1Ω
5Ω
DC Voltage Noise⁹
Observational Period
Range
2-Minute
RMS Noise
2-Minute
Peak-Peak Noise
1 mV
1.3 nVrms
8 nVpp
10 mV
1.5 nVrms
10 nVpp
100 mV
10 nVrms
65 nVpp
1V
100 nVrms
650 nVpp
10 V
450 nVrms
3 μVpp
100 V
11 μVrms
75 μVpp
DC Voltage Noise vs Source Resistance¹⁰
Source Resis-
tance
0Ω
Noise
1.3 nVrms
Analog Filter
Off
1000 Ω
1.7 nVrms
Off
1k Ω
4 nVrms
Off
10k Ω
13 nVrms
Off
100k Ω
41 nVrms
Off
1M Ω
90 nVrms
Off
24-Hour
Peak-Peak Noise
12 nVpp
14 nVpp
80 nVpp
800 nVpp
3.7 μVpp
90 μVpp
Digital Filter
Med
Med
Med
Med
Med
Med
1 Speciications are for Channel 1 or Channel 2, after 2-hour warm-up,
resolution at 7.5 digits (100 NPLC), with FILTERS off. RESISTANCE
speciications are for 4-wire Ohms or 2-wire ohms using Null. Without
Null, add 0.2 Ohms additional error in 2-wire Ohms function. For
Analog Filter ON, add 0.002% of reading.
2 20% overrange on all ranges except 5% on Voltage Limited
Resistance.
3 After using Math Null. If Null is not used add 100 nanoVolts.
4 Channel 1 only.
5 Channel 1 only. Resistance measurements, for NPLC <1, add 160 μΩ
rms noise.
6 Voltage limit can be set to 20 mV (default), 100 mV, or 500 mV. Measured
resistance plus Channel 1 HI and LO lead resistance is limited to 10.5
Ω on the 10 Ω range and 105 Ω on the 100 Ω range.
7 For 25 Ω SPRT with triple-point of water check within the last 4 hours.
Without the triple-point of water check, add 0.013°C for 24 hours, add
0.035°C for 90 day, and add 0.055°C for 1 year speciications.
8 For ixed reference junction. Add 0.3°C for external reference junction,
add 2.0ûC for internal reference junction.
9 After a 2-hour warm-up, ± 1°C, 6.5 digits (10 PLC) with Analog Filter
Off and Digital Filter Medium (50 reading average). 2-minute rms and
24-hour noise typical. For measurements using 0.02 or 0.2 NPLC, add
800 nV rms noise.
10 Typical noise behavior for Ch 1 or Ch 2, after 2 hour warm-up, 6.5
digits (10 PLC), 2 minute observation period on 1 mV range. For peak-
to-peak noise, multiply rms noise by 6.