Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications are subject to change without notice.
Page 2 of 14 SPEC-2002 Rev. H / February 2009
Model 2002
Multimeter Specifications
DC Voltage Uncertainty: = ±[ (ppm of reading) x (measured value) + (ppm of range) x (range used) ] / 1,000,000.
% Accuracy: = (ppm accuracy) / 10,000.
1ppm of Range: = 20 counts for ranges up to 200V and 10 counts on 1000V range at 7H digits.
NORMAL ACCURACY
10
– 1PLC, DFILT OFF
Relative Accuracy ±(ppm of reading + ppm of range)
Range Full Scale Resolution
Input
Resistance
24 Hours
6
90 Days
7
1 Year
7
2 Years
7
Temperature Coefficient
±(ppm of reading + ppm of range)/°C
Outside T
CAL
±5°C
200 mV
8
±210.00000 10 nV >100 G 3.5 + 6 15 + 11 19 + 12 23 + 13 2 + 1.8
2 V
8
±2.1000000 100 nV >100 G 1.2 + 0.6 6 + 1.1 10 + 1.2 14 + 1.3 0.2 + 0.18
20 V ±21.000000 1 µV >100 G 3.2 + 0.35 8 + 0.4 12 + 0.4 16 + 0.4 0.3 + 0.02
200 V ±210.00000 10 µV 10 M ±1% 5 + 1.2 14 + 2.8 22 + 2.8 30 + 2.8 1.5 + 0.3
1000 V
9
±1100.0000 100 µV 10 M ±1% 5 + 0.4 14 + 0.7 22 + 0.7 30 + 0.7 1.5 + 0.06
SPEED AND ACCURACY 90 DAYS
Accuracy
4
,
11
±(ppm of reading+ppm of range+ppm of range rms noise
12
)
Range
10PLC
DFILT On, 10 Readings 10PLC DFILT Off
1PLC
DFILT On, 10 Readings
1PLC
DFILT Off
0.1PLC
DFILT Off
0.01PLC
13
DFILT Off
200 mV
8
15 + 8 + 0 15 + 8 +0.5 15 + 8 + 0.7 15 + 8 + 1 25 + 10 + 13 100 + 200 + 15
2 V
8
6+ 0.8 + 0 6 + 0.8 + 0.05 6 + 0.8 + 0.07 6 + 0.8 + 0.1 7 + 1 + 1.3 130 + 200 + 3
20 V 6 + 0.15 + 0 6 + 0.15 + 0.03 7 + 0.15 + 0.05 8 + 0.15 + 0.08 15 + 0.5 + 0.7 130 + 200 + 3
200 V 14 + 2 + 0 14 + 2+ 0.1 14 + 2+ 0.15 14 + 2 + 0.25 15 + 2 + 1 130 +200 + 3
1000 V
9
14 + 0.4 + 0 14 + 0.4 + 0.05 14 + 0.4 + 0.05 14 + 0.4 + 0.1 15 + 0.5 + 0.5 90 + 200 + 2
PLC = Power Line Cycles. DFILT = Digital Filter.
NOISE REJECTION (DB)
14
AC and DC CMRR
15
AC NMRR
Speed (Number of Power
Line Cycles)
Line Sync On
16
Internal Trigger
Line Sync On
16
,
25
Readings DFILT On
Line Sync On
16
DFILT Off
Internal Trigger
DFILT Off
PLC 1 140 120 90 80 60
PLC < 1 90 60 60 50 0
Effective noise is reduced by a factor of 10 for every 20dB of noise rejection (140dB reduces effective noise by 10,000,000:1).
CMRR is rejection of undesirable AC or DC signal between LO and earth. NMRR is rejection of undesirable power line related AC signal
between HI and LO.
KEITHLEY FACTORY CALIBRATION UNCERTAINTY
Range ppm of reading
200 mV 3.2
2 V 3.2
20 V 2.6
200 V 2.6
1000 V 2.6
Factory calibration uncertainty represents traceability to NIST. This uncertainty is added to relative accuracy specifications to obtain absolute
accuracies. The 200mV and 2V range uncertainties are equal to the uncertainty of the 2V calibration source. The 20V, 200V, and 1000V
range uncertainties are equal to the uncertainty of the 20V calibration source.
10
Specifications are for 1 power line cycle, normal autozero, digital filter off, autorange off.
11
For TCAL ±5°C, normal autozero. 1-year or 2-year accuracy can be found by applying the same speed accuracy ppm changes to the 1-year or 2-year base
accuracy.
12
Typical values. Peak-to-peak noise equals 6 times rms noise.
13
In burst mode, display off. Burst mode requires autozero refresh (by changing resolution or measurement function) once every 24 hours.
14
For line frequency ±0.1%.
15
Applies for 1k imbalance in the LO lead. For 400Hz operation, subtract 10dB. For the 200V and 1000V ranges, subtract 20dB.
16
For noise synchronous to the line frequency.
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