Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications are subject to change without notice.
SPEC-2002 Rev. H / February 2009 Page 9 of 14
Model 2002
Multimeter Specifications
Factory calibration uncertainty represents traceability to NIST. This uncertainty is added to relative accuracy specifications to obtain absolute
accuracies. The uncertainties for each range are equal to the uncertainty of the respective calibration sources.
Settling Characteristics: <500µs to 50ppm of step size. Reading settling times are affected by source impedance and cable dielectric
absorption characteristics.
Maximum Allowable Input: 2.1A, 250V.
Overload Protection: 2A fuse (250V), accessible from front (for front input) and rear (for rear input).
Autoranging: Autoranges up at 105% of range, down at 10% of range.
DC IN-CIRCUIT CURRENT
10
Ω
1
Ω
100m
Ω
10m
Ω
1m
Ω
1mA 10mA 100mA 1A 10A 100A100
μ
A
Measured Current
race ResistanceT
Specified
Measurement Range
The DC in-circuit current measurement function allows a user to measure the current
through a wire or a circuit board trace without breaking the circuit.
When the In-Circuit Current Measurement function is selected, the 2002 will first perform a
4-wire resistance measurement, then a voltage measurement, and will display the
calculated current.
TYPICAL RANGES
Current: 100µA to 12A.
Trace Resistance: 1m to 10.
Voltage: ±200mV max. across trace.
Speed: 4 measurements/second at 1 power line cycle.
Accuracy: ±(5% + 500µA). For 1 power line cycle, autozero on, 10-reading digital filter,
T
CAL
±5°C, 90 days, 1 year or 2 years.
AC AMPS
ACI INPUT CHARACTERISTICS
rms
Range
Peak
Input
Full Scale
rms Resolution
Maximum Burden
Voltage
38
Temperature Coefficient
±(% of reading + % of range)/°C
Outside TCAL ±5°C
200 µA 1 mA 210.0000 100 pA 0.35 V 0.01 + 0.001
2 mA 10 mA 2.100000 1 nA 0.45 V 0.01 + 0.001
20 mA 100 mA 21.00000 10 nA 0.5 V 0.01 + 0.001
200 mA 1 A 210.0000 100 nA 0.5 V 0.01 + 0.001
2 A 2 A 2.100000 1 µA 1.5 V 0.01 + 0.001
ACI ACCURACY
24, 42
90 Days, 1 Year or 2 Years, T
CAL
±5°C, for 5% to 100% of range, ±(% of reading + % of range)
Range 20Hz–50Hz 50Hz–200Hz 200Hz–1kHz 1kHz–10kHz 10kHz–30kHz
22
30kHz–50kHz
22
50kHz–100kHz
22
200 µA 0.35 + 0.015 0.2 + 0.015 0.4 + 0.015 0.5 + 0.015
2 mA 0.3 + 0.015 0.15 + 0.015 0.12 + 0.015 0.12 + 0.015 0.25 + 0.015 0.3 + 0.015 0.5 + 0.015
20 mA 0.3 + 0.015 0.15 + 0.015 0.12 + 0.015 0.12 + 0.015 0.25 + 0.015 0.3 + 0.015 0.5 + 0.015
200 mA 0.3 + 0.015 0.15 + 0.015 0.12 + 0.015 0.15 + 0.015 0.5 + 0.015 1 + 0.015 3 + 0.015
2 A 0.35 + 0.015 0.2 + 0.015 0.3 + 0.015 0.45 + 0.015 1.5 + 0.015 4 + 0.015
AC Current Uncertainty: = ±[ (% of reading) x (measured value) + (% of range) x (range used) ] / 100.
ppm Accuracy: = (% accuracy) x 10,000.
0.015% of Range: = 30 counts at 5H digits.
ACI READING RATES
17, 22
Readings/Second to Memory Readings/Second to IEEE-488
18
Readings/Second with
Time Stamp to IEEE-488
18
PLC
Measurement
Aperture Bits
Default
Digits
Autozero Off Autozero On Autozero Off Autozero On Autozero Off Autozero On
10 167 ms (200 ms) 29 6½ 6 ( 5 ) 2 (1.7) 6 ( 5 ) 2 (1.6) 6 ( 5 ) 2 (1.6)
2 33.4 ms (40 ms) 27 5½ 29 (25) 9 (7.6) 28 (23) 9 (7.4) 27 (22) 9 (7.4)
1 16.7 ms (20 ms) 26 5½ 56 (48) 47 (40) 53 (43) 44 (36) 47 (38) 40 (33)
0.2 3.34 ms (4 ms) 23 5½ 163 (145) 102 (91) 139 (124) 100 (89) 95 (84) 74 (66)
0.1 1.67 ms (2 ms) 22 5½ 163 (156) 104 (100) 139 (133) 101 (97) 95 (91) 75 (72)
0.02 334 µs (400 µs) 20 5½ 163 (163) 107 (107) 139 (139) 103 (103) 95 (95) 76 (76)
0.01 167 µs (167 µs) 19 4½ 384 (384) 110 (110) 253 (253) 103 (103) 164 (164) 76 (76)
0.01
13
167 µs (167 µs) 19 4½ 2000 (2000) 2000 (2000)
42
Add 0.005% of range uncertainty for current above 0.5A rms for self-heating.
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