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 used, add 0.2  for 2-wire r esistance plus lead
resistance, and add 20 m 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 ,100,1k ranges.
1k 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 k 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  10.00000  1m 100  10  5mA/13V
100  100.0000  10 m 1m 100  1mA/6V
1k 1.000000 k 100 m 10 m 1m 1mA/6V
10 k 10.00000 k 1  100 m 10 m 100 A/6V
100 k 100.0000 k 10  1  100 m 100 A/13V
1M 1.000000 M 100  10  1  10 A/13V
10 M 10.00000 M 1k 100  10  1 A/13V
100 M 100.0000 M 10 k 1k 100  1 A||10M /10V
1.0 G 1.000000 G 100 k 10 k 1k 1 A||10M /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 
0.003 + 0.01 0.008 + 0.03 0.01+ 0.03 0.0006 + 0.0005
100 
0.003 + 0.003 0.008 + 0.004 0.01 + 0.004 0.0006 + 0.0005
1k
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
10 k
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
100 k
0.002 + 0.0005 0.008 + 0.001 0.01 + 0.001 0.0006 + 0.0001
1M
0.002 + 0.001 0.008 + 0.001 0.01 + 0.001 0.001 + 0.0002
10 M
0.015 + 0.001 0.02 + 0.001 0.04 + 0.001 0.003 + 0.0004
100 M
0.3 + 0.01 0.8 + 0.01 0.8 + 0.01 0.15 + 0.0002
1G
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 m
4½
0.02
0.017% of range ±15 m
www.tektronix.com/dmm405 0_4040 9