The Agilent 53131A/132A/181A counters are high-performance, low-cost counters that simplify and accelerate frequency measurements in production and research and development. They have a bandwidth of 225 MHz (optional 1.5, 3, 5, 12.4 GHz) and a resolution of 10 or 12 digits when gated for 1 second. They also feature a GPIB interface and IntuiLink connectivity software as standard, with a data transfer rate of up to 200 full-format measurements per second. The counters offer built-in statistical and mathematical functions, allowing for scaling of measurement results and measurement and tracking of average, minimum/maximum, and standard deviation. They include automatic limit testing with configurable upper and lower limits, and can provide trigger outputs when limits are exceeded. The counters are suitable for general and RF counter applications.
This manual describes the Agilent 53131A, 53132A and 53181A counters, covering their high‑performance features such as 225 MHz bandwidth, up to 200 measurements / s, and built‑in statistical and mathematical functions. It explains the user interface, GPIB and IntuiLink connectivity, and how to configure measurement types, gate times and limits.
The document also details optional time‑base modules, input characteristics for each channel, measurement accuracy, trigger settings, and ordering information for accessories and service options.
| Bandwidth | 225 MHz |
|---|---|
| Maximum measurement rate | 200 measurements per second |
| Interface | GPIB (SCPI compatible) and optional RS‑232 |
| Frequency range (DC‑coupled) | DC to 225 MHz |
| Time‑interval resolution (53131A) | 500 ps |
| Time‑interval resolution (53132A) | 150 ps |
| Frequency/period resolution (53132A) | 12 bits/second |
The counters can acquire up to 200 full‑format measurements per second.
Each unit includes a GPIB interface with SCPI compatibility and a standard RS‑232 read‑only port for printer or terminal emulation.
Option 010 is a high‑stability oven‑controlled time base with an aging rate less than 5×10⁻¹⁰ per day.
The 53131A measures frequencies from DC up to 225 MHz (AC‑coupled 1 MHz‑225 MHz).