Keithley 2002 User Manual page 286

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
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.
10
NORMAL ACCURACY – 1PLC, DFILT OFF
Range Full Scale Resolution
8
200 mV ±210.00000
8
2 V ±2.1000000
20 V ±21.000000
200 V ±210.00000
9
1000 V ±1100.0000
SPEED AND ACCURACY 90 DAYS
10PLC
Range DFILT On, 10 Readings
8
200 mV 15 + 8 + 0
8
2 V 6+ 0.8 + 0
20 V 6 + 0.15 + 0
200 V 14 + 2 + 0
9
14 + 0.4 + 0
1000 V
PLC = Power Line Cycles. DFILT = Digital Filter.
14
NOISE REJECTION (DB)
Speed (Number of Power
Line Cycles)
Line Sync On
PLC ≥ 1
PLC < 1
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
200
2
20
200
1000
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 1kΩ 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.
Specifications are subject to change without notice.
Page 2 of 14
Relative Accuracy ±(ppm of reading + ppm of range)
Input
Resistance 24 Hours
10 nV >100 GΩ
100 nV >100 GΩ 1.2 + 0.6
1 µV >100 GΩ 3.2 + 0.35
10 µV 10 MΩ ±1%
100 µV 10 MΩ ±1%
±(ppm of reading+ppm of range+ppm of range rms noise
10PLC DFILT Off
15 + 8 +0.5
6 + 0.8 + 0.05
6 + 0.15 + 0.03
14 + 2+ 0.1
14 + 0.4 + 0.05
15
AC and DC CMRR
16
Internal Trigger
140 120
90 60
ppm of reading
mV 3.2
V 3.2
V 2.6
V 2.6
V 2.6
6 7
90 Days 1 Year
3.5 + 6 15 + 11 19 + 12
6 + 1.1 10 + 1.2
8 + 0.4 12 + 0.4
5 + 1.2 14 + 2.8 22 + 2.8
5 + 0.4 14 + 0.7 22 + 0.7
,
4 11
Accuracy
1PLC
DFILT On, 10 Readings
15 + 8 + 0.7
6 + 0.8 + 0.07 6 + 0.8 + 0.1
7 + 0.15 + 0.05 8 + 0.15 + 0.08
14 + 2+ 0.15 14 + 2 + 0.25
14 + 0.4 + 0.05 14 + 0.4 + 0.1
16 25
Line Sync On ,
Readings DFILT On
90
60
Multimeter Specifications
Temperature Coefficient
±(ppm of reading + ppm of range)/°C
7 7
2 Years Outside T
23 + 13
14 + 1.3
16 + 0.4
30 + 2.8
30 + 0.7
12
)
1PLC 0.1PLC
DFILT Off DFILT Off
15 + 8 + 1 25 + 10 + 13
7 + 1 + 1.3
15 + 0.5 + 0.7
15 + 2 + 1
15 + 0.5 + 0.5
AC NMRR
16
Line Sync On Internal Trigger
DFILT Off DFILT Off
80
50
SPEC-2002 Rev. H / February 2009
Model 2002
±5°C
CAL
2 + 1.8
0.2 + 0.18
0.3 + 0.02
1.5 + 0.3
1.5 + 0.06
13
0.01PLC
DFILT Off
100 + 200 + 15
130 + 200 + 3
130 + 200 + 3
130 +200 + 3
90 + 200 + 2
60
0