Keithley 2002 User Manual page 290

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Settling Characteristics:
Normal Mode (rms, avg.):
Low Frequency Mode (rms)
Common Mode Rejection: For 1kΩ imbalance in either lead: >60dB for line frequency ±0.1%.
Maximum Volt·Hz Product: 2 x 10
Autoranging: Autoranges up at 105% of range, down at 10% of range.
OHMS
TWO-WIRE AND FOUR-WIRE OHMS
Full
Range Scale
20 Ω 21.0000000
200 Ω 210.000000
2 kΩ 2100.00000
20 kΩ 21.0000000
200 kΩ 210.000000
2 MΩ 2.10000000
32
20 MΩ 21.0000000
32
200 MΩ 210.000000
32
1 GΩ 1.05000000
KEITHLEY FACTORY CALIBRATION UNCERTAINTY
Range ppm of reading
20 Ω 29.5
200 Ω 7.7
2 kΩ 6.4
20 kΩ 7.8
200 kΩ 7.3
2 MΩ 14.9
20 MΩ 14.9
200 MΩ 14.9
1 GΩ 14.9
Factory calibration uncertainty represents traceability to NIST. This uncertainty is added to relative accuracy specifications to obtain absolute
accuracies.
The 20Ω - 2MΩ range uncertainties are equal to the uncertainty of the respective calibration sources.
The 20MΩ, 200MΩ, and 1GΩ range uncertainties are equal to the uncertainty of the 2MΩ calibration source.
ENHANCED ACCURACY
5
Range Transfer
20Ω 2.5 + 3
200Ω 2.5 + 2
2 kΩ 1.3 + 0.2
20 kΩ 1.3 + 0.2
200 kΩ 2.5 + 0.4
2 MΩ 5 + 0.2
32
20 MΩ 15 + 0.1
32
200 MΩ 50 + 0.5
32
1 GΩ 250 + 2.5
29
Current source has an absolute accuracy of ±5%.
30
Refers to source lead resistance. Sense lead resistance is limited only by noise considerations. For best results, it is suggested that it be limited to 1.5kΩ.
31
Offset compensation voltage plus source current times measured resistance must be less than source current times resistance range selected.
32
For 2-wire mode.
33
Current source is paralleled with a 10MΩ resistance.
34
Specifications are for 10 power line cycles, 10-reading repeat digital filter, synchronous autozero, autorange off, 4-wire mode, offset compensation on (for 20Ω to
20kΩ ranges), except as noted.
35
For T ±1°C, following 4-hour warm-up. T
CAL
Specifications are subject to change without notice.
Page 6 of 14
<300ms to 1% of step change
<450ms to 0.1% of step change
<500ms to 0.01% of step change
<5s to 0.1% of final value
7
V·Hz (for inputs above 20V).
Resolution
100 nΩ
1 µΩ
10 µΩ
100 µΩ
1 mΩ
10 mΩ
100 mΩ
1 Ω
10 Ω
34
10PLC, Offset comp. on, DFILT 10
35 7
24 Hours
90 Days
5 + 4.5 15 + 6
5 + 3 15 + 4
2.5 + 0.3 7 + 0.4
2.5 + 0.3 7 + 0.4
5.5 + 0.5 29 + 0.8
12 + 0.3 53 + 0.5
50 + 0.2 175 + 0.6
150 + 1 500 + 3
750 + 5 2000 + 15
is ambient temperature at calibration (23°C at the factory).
CAL
Current Open
29 12
Source Circuit
7.2 mA 5 V
960 µA 5 V
960 µA 5 V
96 µA 5 V
9.6 µA 5 V
1.9 µA 6 V
33
1.4 µA 14 V
33
1.4 µA 14 V
33
1.4 µA 14 V
Relative Accuracy
± (ppm of reading + ppm of range)
7
1 Year 2 Years
17 + 6
17 + 4
9 + 0.4 11 + 0.4
9 + 0.4 11 + 0.4
35 + 0.9
65 + 0.5 75 + 0.5
250 + 0.6 300 + 0.6
550 + 3
2050 + 15 2100 + 15
Multimeter Specifications
Maximum Maximum
HI Lead LO Lead
30
Resistance Resistance
50 Ω 10 Ω
200 Ω 100 Ω
200 Ω 150 Ω
1.5 kΩ 1.5 kΩ
1.5 kΩ 1.5 kΩ
1.5 kΩ 1.5 kΩ
TemperatureCoefficient
± (ppm of reading + ppm of range) / °C
7
Outside T
20 + 6
20 + 4
40 + 1
600 + 3
SPEC-2002 Rev. H / February 2009
Model 2002
Maximum
Offset
30 31
Compensation
±0.2 V
±0.2 V
–0.2 V to +2 V
–0.2 V to +2 V
±5°C
CAL
2.5 + 0.7
2.5 + 0.5
0.8 + 0.05
0.8 + 0.05
3.5 + 0.18
7 + 0.1
20 + 0.1
80 + 0.5
400 + 2.5