HP/Agilent 53131A Frequency Counter

• 3GHz channel 3   
• High-accuracy frequency and time-interval measurements to 225 MHz (optional to 12.4 GHz)
• Measures frequency, frequency ratio, time interval, period, rise/fall time, pulse width, duty cycle, phase (CH1 to CH2), totalize, peak voltage, time interval average, time interval delay
• 10-digit/second and 150 ps resolution 

Agilent 53100A Series high-performance frequency counters give you fast, precise frequency measurements at an affordable price. These frequency counters feature an intuitive user interface and one-button access to frequently used functions so you can make accurate measurements quickly and easily. 

These instruments use real-time digital signal processing technology to analyze data while simultaneously taking new readings, speeding measurement throughput. The technology, developed for Agilent's high-end line of modulation domain analyzers, allows the counters to gather more data for each measurement, so you get higher-resolution measurements in a fraction of the time it takes a conventional reciprocal counter.

All 53100A Series frequency counters offer built-in statistics and math functions so you can scale measurements and simultaneously measure and track average, min/max and standard deviation. Automated limit testing lets you set upper and lower limits for any measurement. An analog display mode lets you see at a glance whether a measurement is within pass/fail limits. The frequency counters flag out-of-limit conditions and can generate an output signal to trigger external devices when a limit is exceeded. For quick access to frequently used tests, a single keystroke recalls up to 20 different stored front-panel set-ups.

For computer-controlled systems applications, each 53100 Series frequency counter includes a standard GPIB interface with full SCPI-compatible programmability and a data transfer rate of more than 200 fully formatted measurements per second. The standard RS-232 talk-only interface provides printer support or data transfer to a computer through a terminal-emulation program.