Keithley 428-PROG
| Attribute | Value |
|---|---|
| Current Gain Range | 10³ to 10¹¹ A/V (8 ranges) |
| Maximum Output Voltage | ±10V |
| Input Bias Current | Less than 75 fA at 23°C |
| Rise Time | 120 µs to 800 ms (depending on gain setting) |
| Interface/Programmability | IEEE-488 (GPIB) programmable interface |
| Input Connector | Triax connector (3-lug) |
| Output Connector | BNC connector |
| Power Requirements | 105–125V or 210–250V AC, 50/60 Hz, 20W maximum |
| Operating Temperature | 0°C to 40°C |
| Dimensions (H x W x D) | 89 mm x 213 mm x 369 mm (3.5 in x 8.375 in x 14.5 in) |
Keithley 428-PROG Options:
- 428-PROG - 428-PROG-3Y-EW - 1-year factory warranty extended to 3 years from date of shipment
| Model | 428-PROG |
|---|
The Keithley 428-PROG Programmable Current Amplifier offers exceptional current-to-voltage conversion with gains from 10³ V/A to 10¹¹ V/A and rise times ranging from 2μs to 300ms. Its advanced feedback current circuitry provides ultra-low noise of 1.2fA rms and rapid signal response, ideal for high-precision applications in labs and research environments.
Versatile and effective for biochemistry, photonics, surface science, and transient studies, it features a programmable ±5V bias, BNC connectors, and front-panel controls with LED indicators and brightness settings.
Testwall can supply the used Keithley 428-PROG, 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 428-PROG.
