Keithley
Keithley 487
Picoammeter / Voltage Source
5 ranges: 2V, 20V, 200V, 500V, 1000V DC Voltage Ranges
10 ranges: 2nA to 2mA Current Measurement Ranges
Up to 505V DC Voltage Source Output
100fA on most sensitive range Current Measurement Resolution
Up to 2GΩ (calculated V/I) Resistance Measurement

| Attribute | Value |
|---|---|
| Voltage Ranges | 5 ranges: 2V, 20V, 200V, 500V, 1000V DC |
| Current Measurement Ranges | 10 ranges: 2nA to 2mA |
| Voltage Source Output | Up to 505V DC |
| Current Measurement Resolution | 100fA on most sensitive range |
| Resistance Measurement | Up to 2GΩ (calculated V/I) |
| IEEE-488 Interface | Built-in IEEE-488 (GPIB) interface for remote control |
| Display | 3½-digit LED display with polarity indication |
| Voltage Source Accuracy | 0.2% of range |
| Current Measurement Accuracy | ±0.4% of range |
| Power Requirements | 105-125V or 210-250V AC, 50/60Hz, 20VA maximum |
Keithley 487 Options:
- 487 - 236-ILC-3 - Safety Interlock Cable
- 487 - 237-ALG-2 - Low Noise Cable
- 487 - 7078-TRX-3 - 3-Slot Male Triax to 3-Slot Male Triax Cable, 0.9m (3 ft)
- 487 - 6171 - 3-Slot Male Triax to 2-Lug Female Triax Adapter
- 487 - 6172 - 2-Slot Male Triax to 3-Lug Female Triax Adapter
- 487 - 7078-TRX-BNC - 3-Slot Male Triax to BNC Adapter
- 487 - 8008 - Resistivity Chamber Test Fixture
- 487 - 4288-1 - Single Fixed Rack Mount Kit
- 487 - 4288-2 - Dual Fixed Rack Mount Kit
- 487 - 4288-4 - Dual Fixed Rack Mount Kit
| Model | 487 |
|---|
The Keithley 487 is a precise instrument combining a fast picoammeter with a high resistance meter, enhanced by a programmable ±500V voltage source. It features exceptional 10fA sensitivity, capable of resistivity measurements from <1Ω to >10^16Ω, with a high-speed 180 readings per second capability.
Perfect for high-resistance and low-current applications, it includes an IEEE-488 interface, making it ideal for automated test setups requiring stability and accuracy.
Testwall can supply the used Keithley 487, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keithley 487.





