Keysight (Agilent)
Keysight (Agilent) 5351B
10Hz-26.5GHz Microwave Frequency Counter
500 MHz to 26.5 GHz Frequency Range
1 Hz Frequency Resolution
50 Ohm Input Impedance
-30 dBm (500 MHz to 26.5 GHz) Sensitivity (Typical)
+20 dBm (100 mW) Maximum Input Power

| Attribute | Value |
|---|---|
| Frequency Range | 500 MHz to 26.5 GHz |
| Frequency Resolution | 1 Hz |
| Input Impedance | 50 Ohm |
| Sensitivity (Typical) | -30 dBm (500 MHz to 26.5 GHz) |
| Maximum Input Power | +20 dBm (100 mW) |
| Measurement Speed | Up to 200 measurements per second |
| Input Connector | 2.4 mm (f) |
| Display | Built-in CRT display with numeric readout |
| Interface | GPIB (IEEE-488) |
| Power Requirements | 100/120/220/240 VAC, 48-66 Hz |
Keysight Technologies 5351B Options:
- 5351B - 001 - Oven Oscillator Timebase
- 5351B - 002 - Rear Panel Input Connectors
- 5351B - 006 - Limiter (Increased Damage Level)
- 5351B - 010 - High Stability Timebase
- 5351B - 700 - Internal CIIL Interface (MATE)
- 5351B - 910 - Extra Operating and Programming Manual / Extra Service Manual
- 5351B - 913 - Rack Mount Adapter Kit with handles attached
- 5351B - 908 - Rack Mount Adapter Kit with handles removed
- 5351B - W30 - Extended Hardware Support
| Model | 5351B |
|---|
The Keysight (Agilent) 5351B Microwave Frequency Counter provides frequency coverage from 10Hz to 26.5GHz without external mixers. With an outstanding sensitivity of -40 dBm, it supports tracking speeds up to 1GHz/sec, 60 ms acquisition time, and up to 100 measurements/sec in automatic mode via HP-IB. It features a microprocessor-based system with math functions, 24-character backlit LCD, HP-IB data output, and built-in diagnostics like self-check, overload alerts, and keyboard lockout. Optional modules extend performance with ovenized timebase, rear inputs, and rackmount kits.
Its compact design and fast acquisition make it highly effective for applications in radar, telecom, and satellite systems. The 5351B ensures rapid, reliable measurements without compromising accuracy or flexibility.
Testwall can supply the used Keysight (Agilent) 5351B, 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 Keysight (Agilent) 5351B.





