What is the differences in time interval resolution between the 53220A and 53230A?

The 53220A offers a single-shot time-interval resolution of 100 ps, while the 53230A achieves a higher resolution of 20 ps single-shot. Additionally, only the 53230A supports continuous gap-free measurements.

Can these counters be integrated into older systems designed for the 53131A series?

Yes, all models in the 53200 Series feature SCPI command compatibility for legacy instruments, including the Agilent 53131A, 53132A, and 53181A.

What optional frequency upgrades are available for these instruments?

All three models (53210A, 53220A, and 53230A) can be upgraded by option to support microwave frequency ranges up to 6 GHz or 15 GHz.

Keysight 53200 Series Frequency Counters

3 models with full specifications from Keysight Technologies (Agilent HP).

The Keysight Technologies (Agilent HP) 53200 Series represents a modern generation of high-performance, LXI-compliant universal and RF frequency counters. Designed for test engineers, RF technicians, and system integrators, these instruments combine rapid reading speeds with deep analysis capabilities. Every counter in the series features a 4.3-inch color graphical display for histograms and trend plots, built-in mathematical analysis, and 1,000,000 readings of internal memory. With a standard base bandwidth of 350 MHz, these instruments can be optionally extended up to 6 GHz or 15 GHz to suit RF and microwave applications.

Base Bandwidth: 350 MHz
Maximum Frequency Option: 15 GHz
Internal Memory: 1,000,000 readings
Display Size: 4.3-inch color graphical

Models in this series

Model	Type	Display	Interfaces	Dimensions (W×H×D)
53230A	Universal	4.3-inch color graphical display	USB 2.0, LAN (LXI-C) standard; GPIB optional	261.1 × 103.8 × 303.2
53210A	Frequency	4.3-inch color graphical display	LAN (LXI-C), USB 2.0 standard; GPIB optional	261.1 x 103.8 x 303.2
53220A	Universal	4.3-inch color graphical display (trend/histogram views)	LAN (LXI Class C), USB 2.0 device, USB host (mass storage), optional GPIB	—

Shared Platform Features

The 53200 Series instruments share a consistent physical design and base performance framework. Each unit fits in a compact chassis measuring 261.1 mm wide, 103.8 mm high, and 303.2 mm deep, weighing 3.9 kg. They operate reliably within a temperature range of 0 to 55 °C and are powered by a universal supply supporting 100 - 240 VAC at 50/60 Hz or 100 - 120 VAC at 400 Hz.

All models include USB 2.0 and LAN (LXI Class C) interfaces as standard for automated control and data transfer, with GPIB available as an option. Built-in math and statistical analysis functions are accessible directly from the 4.3-inch graphical interface, allowing quick evaluation of signal trends and stability without an external computer.

Model Differentiation and Capabilities

While sharing the same physical footprint, the models differ in channel count, measurement types, and resolution performance:

53210A: A single-channel RF frequency counter optimized for speed and precise frequency measurements. It offers a base frequency range up to 350 MHz and a frequency resolution of 10 digits/second. It features built-in math analysis and trend/histogram views.
53220A: A two-channel universal frequency counter and timer. It offers up to 12 digits/second frequency resolution and 100 ps single-shot time-interval resolution. It adds statistical functions such as built-in Allan deviation computation and display.
53230A: The highest-performing universal model in the series, featuring two base channels and supporting up to 75,000 frequency readings per second. It provides 12 digits/second continuous-count frequency resolution and 20 ps single-shot time-interval resolution. It supports continuous gap-free measurements and optional pulse microwave measurements via software.

Legacy Integration and Upgrades

For automated test environments, the 53200 Series includes a SCPI-compatible command set. This allows the counters to serve as comparable alternatives to legacy Agilent HP models, including the 53131A, 53132A, and 53181A. Users can also expand the frequency coverage of any model in this series by adding optional 6 GHz or 15 GHz microwave channels.

Frequently asked questions

What is the differences in time interval resolution between the 53220A and 53230A?: The 53220A offers a single-shot time-interval resolution of 100 ps, while the 53230A achieves a higher resolution of 20 ps single-shot. Additionally, only the 53230A supports continuous gap-free measurements.
Can these counters be integrated into older systems designed for the 53131A series?: Yes, all models in the 53200 Series feature SCPI command compatibility for legacy instruments, including the Agilent 53131A, 53132A, and 53181A.
What optional frequency upgrades are available for these instruments?: All three models (53210A, 53220A, and 53230A) can be upgraded by option to support microwave frequency ranges up to 6 GHz or 15 GHz.