Tektronix DMM4020, Техническое справочное руководство

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Introduction and Specifications
Electrical Specifications
1
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.
Measurement Method ....................................... Current source referenced to LO input
Max Lead Resistance (4-wire ohms) ............... 10 % of range per lead for 200
Ω
, 2 k
Ω
ranges. 1 k
Ω
per lead on all
other ranges.
Input Protection ................................................ 1000 V on all ranges
Input Characteristics
Range
Full-Scale
(5-1/2 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 k
Ω
1.99999 k
Ω
0.01
Ω
0.1
Ω
0.1
Ω
0.8 mA
20 k
Ω
19.9999 k
Ω
0.1
Ω
1
Ω
1
Ω
0.08 mA
200 k
Ω
199.999 k
Ω
1
Ω
10
Ω
10
Ω
0.008 mA
2 M
Ω
1.99999 M
Ω
10
Ω
100
Ω
100
Ω
0.9
µ
A
20 M
Ω
19.9999 M
Ω
100
Ω
1 k
Ω
1 k
Ω
0.16
µ
A
100 M
Ω
100.000 M
Ω
1 k
Ω
10 k
Ω
10 k
Ω
0.16
µ
A || 10 M
Ω
Accuracy
Range
Uncertainty
[1]
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 k
Ω
0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005
20 k
Ω
0.015 + 0.002 0.02 + 0.003
0.003 + 0.0005
200 k
Ω
0.015 + 0.002 0.02 + 0.003
0.003 + 0.0005
2 M
Ω
0.03 + 0.003 0.04 + 0.004
0.004 + 0.0005
20 M
Ω
0.2 + 0.003 0.25 + 0.003
0.01 + 0.0005
100 M
Ω
1.5 + 0.004 1.75 + 0.004
0.2 + 0.0005
Notes:
[1] Uncertainty given as
±
(% of r % of range)
DC Current
Input Protection ............................................... Tool accessible 11 A / 1000 V and 440 mA / 1000 V fuses.
Shunt Resistance .............................................. 0.01
Ω
for 2 A and 10 A ranges
1
Ω
for 20 mA and 200 mA
Burden voltage < 5 mV for 200
µ
A and 2 mA range.
Input Characteristics
Range
Full-Scale
(5-1/2 Digits)
Resolution
Burden Voltage
Slow Medium Fast
200
µ
A 199.999
µ
A 0.001
µ
A 0.01
µ
A 0.01
µ
A
<5 mV
2 mA
1999.99
µ
A 0.01
µ
A 0.1
µ
A 0.1
µ
A
<5 mV
20 mA 19.9999 mA
0.1
µ
A 1
µ
A 1
µ
A
<0.05 V
200 mA 199.999 mA
1
µ
A 10
µ
A 10
µ
A
<0.5 V
2 A 1.99999 A 10
µ
A 100
µ
A 100
µ
A
<0.1 V
10 A 10.0000 A 100
µ
A 1 mA 1 mA
<0.5 V
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