Agilent Technologies 34420A, User Manual

Page: 275 / 294

ACCURACY SPECIFICATIONS
±
(% of r % of range)
[1]
Function Range
[2]
Test
Current
24 Hour
23
°
C
±
1
°
C
90 Day
23
°
C
±
5
°
C
1 Year
23
°
C
±
5
°
C
Temperature
Coefficient
0
°
C - 18
°
C
28
°
C - 55
°
C
Maximum
Per Lead
Resistance
DC Voltage 1.0000000 mV
[3]
10.000000 mV
[3]
100.00000 mV
1.0000000 V
10.000000 V
100.00000 V
[4]
0.0025 + .0020
0.0025 + .0002
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 + .00002
0.0004 + .00006
0.0004 + .00004
0.0001 + .00002
0.0004 + .00005
Resistance
[5]
1.0000000
Ω
10.000000 Ω
100.00000
Ω
1.0000000 K Ω
10.000000 K Ω
100.00000 K Ω
1.0000000 M Ω
10 mA
10 mA
10 mA
1 mA
100
µ A
10 µ A
5 µ A
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
1
Ω
1 Ω
10
Ω
100 Ω
1 K Ω
1 K Ω
1 K Ω
Low Power
Resistance
[5]
1.0000000 Ω
10.000000
Ω
100.00000 Ω
1.0000000 K Ω
10.000000 K Ω
100.00000 K Ω
1.0000000 M
Ω
10 mA
10 mA
1 mA
100 µ A
10 µ A
5 µ A
5 µ A
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 + .00003
0.0005 + .00003
0.0006 + .00003
1
Ω
1
Ω
10 Ω
100 Ω
1 K Ω
1 K Ω
1 K Ω
Voltage
Limited
Resistance
[5][6]
10.000000 Ω
100.00000 Ω
1 mA
100 µ A
0.0020 + .0002
0.0025 + .0002
0.0050 + .0002
0.0050 + .0002
0.0070 + .0002
0.0070 + .0002
0.0005 + .00002
0.0005 + .00002
1 Ω
5 Ω
Channel 1 / Channel 2 (DCV Ratio)
Channel 1 - Channel 2 (DCV Difference)
Ratio Error % = Channel 1 accuracy in % + Channel 2 accuracy in %
Difference Error = Channel 1 (% of r % of range) + Channel 2 (% of r %
of range)
Temperature (resolution = 0.001
°
C)
Thermocouple
[7]
Thermistor
RTD
Thermocouple probe ac 0.2
°
C
Thermistor probe ac 0.1
°
C
RTD probe ac 0.05
°
C
[1]Specifications are for Channel 1 or Channel 2, after 2-hour warm-up, resolution at 7.5 digits (100 NPLC), with FILTERS off.
RESISTANCE specifications are for 4-wire ohms or 2-wire ohms using Null. Without Null, add 0.2
Ω
additional error in 2-wire ohms
function. With Analog Filter ON, add 0.002% of reading to listed specifications.
[2]20% overrange on all ranges except 5% on Voltage Limited Resistance.
[3]After using Null. If Null is not used add 100 nanovolts.
[4]Channel 1 only.
[5]Channel 1 only. Resistance measurements, for NPLC <1, add 160
µ Ω
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 fixed reference junction. Add 0.3
°
C for external reference junction, add 2
°
C for internal reference junction.
Chapter 8 Specifications
34420A Nano Volt/Micro Ohm Meter
276