Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Model 2635/2636
System SourceMeter
®
Specifications
Specifications are subject to change without notice.
Page 6 of 8 SPEC-2635_2636 Rev. A / September 2007
Specifications Category Specifications
RANGE DISPLAY
RESOLUTION
15
VOLTAGE
BURDEN
16
ACCURACY (1 Year)
23°C ± 5°C
± (% rdg. + amps)
100.000 µA 1 nA < 1 mV 0.02% + 25 nA
1.00000 mA 10 nA < 1 mV 0.02% +200 nA
10.0000 mA 100 nA < 1 mV 0.02% + 2.5 µA
100.000 mA 1 µA < 1 mV 0.02% +20 µA
1.00000 A 10 µA < 1 mV 0.03% +1.5 mA
1.50000 A 10 µA < 1 mV 0.05% + 3.5 mA
Time required to reach 0.1% of final value:
Current Range Settling Time
Current Measure
17
Settling Time
1 mA < 100 µs (typical)
Temperature
Coefficient
± (0.15 × accuracy specification)/°C
• For temperatures (0°–18°C & 28°–50°C)
ADDITIONAL METER SPECIFICATIONS
Specifications Category Specifications
Load Impedance Stable into 10,000 pF (typical)
Common Mode Voltage 250 VDC
Common Mode
Isolation
> 1 Gȍ
< 4500 pF
Overrange
101% of source range
102% of measure range
Maximum Sense Lead
Resistance
1 Kȍ for rated accuracy
Sense Input Impedance > 10 Gȍ
15
Applies when in single channel display mode.
16
Four-wire remote sense only.
17
See series 2600 SourceMeter Reference Manual Section 8 for more information.
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