Keysight (Agilent)
Keysight (Agilent) 53181A
DC-225MHz Frequency Counter
DC to 225 MHz (Channel 1), DC to 3 GHz or 5 GHz (Channel 2, optional) Frequency Range
Up to 12 digits/second frequency resolution Resolution
±1 ppm/year aging rate (standard internal timebase) Timebase Accuracy
1 MΩ or 50 Ω selectable (Channel 1) Input Impedance
25 mV RMS (Channel 1, 1 MΩ); 20 mV RMS (Channel 1, 50 Ω) Sensitivity
| Attribute | Value |
|---|---|
| Frequency Range | DC to 225 MHz (Channel 1), DC to 3 GHz or 5 GHz (Channel 2, optional) |
| Resolution | Up to 12 digits/second frequency resolution |
| Timebase Accuracy | ±1 ppm/year aging rate (standard internal timebase) |
| Input Impedance | 1 MΩ or 50 Ω selectable (Channel 1) |
| Sensitivity | 25 mV RMS (Channel 1, 1 MΩ); 20 mV RMS (Channel 1, 50 Ω) |
| Measurement Functions | Frequency, Period, Pulse Width, Duty Cycle, Rise/Fall Time, Totalize |
| Input Voltage Range | Maximum 5 V RMS (1 MΩ); Maximum 5 V peak (50 Ω) |
| Display | 9-digit LCD display with annunciators |
| Interface | GPIB (IEEE-488) and RS-232 standard |
| Power Requirements | 100–240 VAC, 50/60 Hz, 30 W maximum |
Keysight Technologies 53181A Options:
- 53181A - 001 - Medium-stability timebase
- 53181A - 010 - High-stability timebase
- 53181A - 015 - 1.5 GHz RF input Ch 2 for 53181A only
- 53181A - 030 - 3 GHz RF input Ch 3 (Ch 2 on 53181A)
- 53181A - 050 - 5 GHz RF input with type N connector Ch 3 (Ch 2 on 53181A)
- 53181A - 124 - 12.4 GHz RF input with type N connector Ch 3 (Ch 2 on 53181A)
- 53181A - 060 - Rear-panel connectors
- 53181A - 0B0 - Delete manual set
- 53181A - A6J - ANSI Z540 compliant calibration
- 53181A - 1CM - Rack mount kit (P/N 5063-9240)
- 53181A - ABA - Manual option: US English
- 53181A - ABD - Manual option: German
- 53181A - ABE - Manual option: Spanish
- 53181A - ABF - Manual option: French
- 53181A - ABJ - Manual option: Japanese
- 53181A - ABZ - Manual option: Italian
- 53181A - ABO - Manual option: Taiwan Chinese
- 53181A - AB1 - Manual option: Korean
- 53181A - AB2 - Manual option: Chinese
The Keysight (Agilent) 53181A RF Frequency Counter offers fast, precise measurements from DC to 225 MHz, with optional frequency extensions up to 12.4 GHz. It provides 10-digit/second resolution and supports measurements including frequency, frequency ratio (with Option 015), period, and peak voltage. Built-in analysis features include automatic limit testing, scaling, offset, and full statistical functions (min, max, mean, standard deviation). Connectivity is provided via GPIB (SCPI-compliant) and talk-only RS-232, with a data rate of 200 measurements/second.
This single-channel counter is ideal for affordable, high-resolution RF test applications.
Testwall can supply the used Keysight (Agilent) 53181A, 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) 53181A.
