Datasheet

www.tektronix.com 7
Digital Multimeters – Tektronix DMM4020
Resistance
Specifications are for 4-wire resistance function, or 2-wire resistance with REL. If
REL is not used, add 0.2 Ω for 2-wire resistance plus lead resistance.
Characteristic Description
Measurement Method Current source referenced to LO input
Max Lead Resistance
(4-wire ohms)
10% of range per lead for 200 Ω, 2 kΩ ranges. 1 kΩ per
lead on all other ranges.
Input Protection 1000 V on all ranges
Input Characteristics
Range Full Scale
(5½ Digits)
Resolution Current Source
Slow Medium Fast
200 Ω 199.999 Ω 0.001 Ω 0.01 Ω 0.01 Ω 0.8 mA
2 kΩ 1.99999 kΩ 0.01 Ω 0.1 Ω 0.1 Ω 0.8 mA
20 kΩ 19.9999 kΩ 0.1 Ω 1 Ω 1 Ω 0.08 mA
200 kΩ 199.999 kΩ 1 Ω 10 Ω 10 Ω 0.008 mA
2 MΩ 1.99999 MΩ 10 Ω 100 Ω 100 Ω 0.9 μA
20 MΩ 19.9999 MΩ 100 Ω 1 kΩ 1 kΩ 0.16 μA
100 MΩ 100.000 MΩ 1 kΩ 10 kΩ 10 kΩ 0.16 μA || 10 MΩ
Accuracy
Range Uncertainty
*3
Temperature Coefficient/°C
Outside 18– 28°C
90 days 1 year
23°C ±5°C 23°C ±5°C
200 Ω 0.02 + 0.004 0.03 + 0.004 0.003 + 0.0006
2 kΩ 0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005
20 kΩ 0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005
200 kΩ 0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005
2 MΩ 0.03 + 0.003 0.04 + 0.004 0.004 + 0.0005
20 MΩ 0.2 + 0.003 0.25 + 0.003 0.01 + 0.0005
100 MΩ 1.5 + 0.004 1.75 + 0.004 0.2 + 0.0005
*3
Uncertainty given as ±(% of reading + % of range).