Datasheet

Digital Multimeters — Tektronix DMM4050 and DMM4040
Resistance
Specifications
are for 4-wire resistance function, 2 × 4-wire resistance, or 2-wire
resistance with zero. If zero is not us ed, add 0.2 Ω for 2-wire resistance plus lead
resistance, and add 20 mΩ for 2 × 4-wire resistance function.
Characteristic
Description
Measurement Method
Current source referenced to LO input
Max Lead Resistance
(4-wire ohms)
10% of range per lead for 10 Ω, 100 Ω,1kΩ ranges.
1kΩ per lead on all other ranges
Input Protection 1000 V on all ranges
Common Mode
Rejection
140 dB at 50 or 60 Hz ±0.1% (1 kΩ unbalance)
Normal Mode Rejection
60 dB for NPLC of 1 or greater with analog filter off and
power line frequency ±0.1%
100 dB for NPLC of 1 or greater with analog filter on and
power line frequency ±0.1%
Analog Filter
When using the analog filter, specifications are relative
towithinonehourofusingtheZEROfunctionforthat
range and NPLC setting
Input Characteristics
ResolutionRange Resolution
4½ Digits 5½ Digits 6½ Digits
Source Current
10 Ω 10.00000 Ω 1mΩ 100 μΩ 10 μΩ 5mA/13V
100 Ω 100.0000 Ω 10 mΩ 1mΩ 100 μΩ 1mA/6V
1kΩ 1.000000 kΩ 100 mΩ 10 mΩ 1mΩ 1mA/6V
10 kΩ 10.00000 kΩ 1 Ω 100 mΩ 10 mΩ 100 μA/6V
100 kΩ 100.0000 kΩ 10 Ω 1 Ω 100 mΩ 100 μA/13V
1MΩ 1.000000 MΩ 100 Ω 10 Ω 1 Ω 10 μA/13V
10 MΩ 10.00000 MΩ 1kΩ 100 Ω 10 Ω 1 μA/13V
100 MΩ 100.0000 MΩ 10 kΩ 1kΩ 100 Ω 1 μA||10MΩ /10V
1.0 GΩ 1.000000 GΩ 100 kΩ 10 kΩ 1kΩ 1 μA||10MΩ /10V
DMM4
050/4040 Accuracy
Accuracy is given as ±(% measurement + % of range)
Range 24 Hour
(23 °C ±1 °C)
90 Days
(23°C±5°C)
1Year
(23 °C ±5 °C )
Temperature Coefficient/°C
Outside18to28°C
10 Ω
0.003 + 0.01 0.008 + 0.03 0.01+ 0.03 0.0006 + 0.0005
100 Ω
0.003 + 0.003 0.008 + 0.004 0.01 + 0.004 0.0006 + 0.0005
1kΩ
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
10 kΩ
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
100 kΩ
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
1MΩ
0.002 + 0.001 0.008 + 0.001 0.01 + 0.001 0.001 + 0.0002
10 MΩ
0.015 + 0.001 0.02 + 0.001 0.04 + 0.001 0.003 + 0.0004
100 MΩ
0.3 + 0.01 0.8 + 0.01 0.8 + 0.01 0.15 + 0.0002
1GΩ
1.0 + 0.01 1.5 + 0.01 2.0 + 0.01 0.6 + 0.0002
Additional Ohms Error s
Digits
NPLC Additional NPLC Noise Error
6½
100
0% of range
6½
10
0% of range
5½
1
0.001% of range
5½
0.2
0.003% of range ±7 mΩ
4½
0.02
0.017% of range ±15 mΩ
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