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home > Keithley > Scientific Sensitive Instruments Selection Guide

 

Scientific Sensitive Instruments
Low Current, Low Voltage, Low Resistance, High Impedance Measurements

 
Feature 6430 Sub-Femtoamp Remote SMU 6514 / 6517B Electrometer 6485 / 6487 Picoammeter 6482 Dual-Channel Picoammeter / Voltage Source 6220 / 6221 Current Source 2182A Nanovoltmeter

Current Min/Max

10aA/100mA

100aA/20mA

10fA/20mA

1fA/20mA

100fA /100mA

-

Voltage Min/Max

1mV /200V

10mV 200V

- -  

1nV / 100V

Resistance Min/Max

1MΩ/ >20TΩ

10mΩ/10PΩ

10Ω/1PΩ (with Model 6487)

-

10nΩ/1GΩ (with Model 2182A)

10nΩ /1GΩ (with Model 6220 or 6221)

Max readings /sec

2,000 Rdgs/sec

1,200 Rdgs/sec

1,000 Rdgs/sec

900 Rdgs/sec

10,000,000 Samples/sec (Model 6221 ARB Only)

115 Rdgs/sec

Memory Size

5,000 Readings

50,000 Readings

3,000 Readings

2 x 3000 Readings

65,536 Points

1,024 Readings

Resolution

6½ Digits

5½ Digits

5½ Digits

6½ Digits

4½ Digits

7½ Digits

Input Connection

3 Slot Triax

3 Slot Triax

BNC (6485) 3 Slot Triax (6487)

3 Slot Triax BNC (via included adapter)

3 Slot Triax

Low Thermal

Interface

GPIB, RS-232

GPIB, RS-232

GPIB, RS-232

GPIB, RS-232

GPIB, RS-232, (LAN on 6221)

GPIB, RS-232

Other

Digital I/O, Handler Interface

Built-in +/- 1kV Source (Model 6517B), Digital I/O

Built-in 500V Source (Model 6487)

Dual built-in 30V Sources, dual measurement channels

Digital I/O, Handler Interface

2 channels, thermocouple measurements