The two-channel Agilent 53131A frequency counter is our most

popular - with the ability to make frequency, frequency ratio, time

interval and pulse measurements. An optional RF channel can be

added to measure 3, 5, or 12.4 GHz.

The Agilent 53132A universal counter has frequency

resolution of 12 digits per second, 150 ps time interval

resolution and a complete set of test and analysis

features. The unit comes with wo 225 MHz channels,

and you can choose an optional third channel that  

measures up to 3 GHz, 5 GHz or 12.4 GHz.

Measurements include frequency, frequency ratio, time interval, rise/fall time, phase, duty cycle, 

positive/negative pulse width, totalize, peak voltage, time interval average and time interval delay

Automated limit tests and one-button measurement setups for fast, easy operation
Onboard digital signal processing speeds measurements
Built-in statistics feature lets you simultaneously measure average, min/max, and standard deviation

Small package fits the limited space on your benchtop

Measurements include frequency, frequency ratio (with optional channel 2), period and peak voltage

Automated limit tests and one-button measurement setups for fast, easy operation

Onboard digital signal processing speeds measurements

Built-in statistics feature lets you simultaneously measure average, min/max, and standard deviation

Small package fits the limited space on your benchtop

Product Comparison - Frequency Counters and Time Interval Counters

Frequency, frequency ratio, time interval, period,

rise/fall time, positive/negative pulse width,

duty cycle, phase, totalize, peak voltage,

time interval average, time interval delay

Frequency, frequency ratio

(with optional channel 2),

period, peak voltage

Automatic limit testing, math (scale and offset),

statistics (minimum, maximum, mean, standard deviation)

dc to 225 MHz
(3, 5 or 12.4 GHz)

dc to 225 MHz
(3, 5 or 12.4 GHz)

dc to 225 MHz
(1.5, 3, 5 or 12.4 GHz)

Agilent Technologies 53131A/132A/ 181A high-performance counters give you fast, precise frequency
measurements at an affordable price. These counters feature an intuitive user interface and one-button
access to frequently used functions so you can make accurate measurements quickly and easily.

Real-time digital signal processing technology is used 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 higherresolution measurements in a fraction of the time it takes other counters.

The 53131A/132A/181A 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 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 counter includes a standard GPIB interface with full
SCPI-compatible programmability and a data transfer rate of up to 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.

The two-channel 53131A counter offers 10 digits per second of frequency/ period resolution and a bandwidth
of 225 MHz. Time interval resolution is specified at 500 ps. An optional third channel provides frequency
measurements up to 3 GHz, 5 GHz, or 12.4 GHz. Standard measurements include frequency, period, ratio,

time interval, pulse width, rise/fall time, phase angle, duty cycle, totalize, and peak voltage.

For applications requiring higher resolution, the 53132A offers the same features and functions as the 53131A,
with up to 12 digits/sec frquency/period resolution and 150 ps time interval resolution. In addition, the 53132A
offers advanced arming modes for time interval measurements.

Optimized for RF applications, the single-channel 10 digit/s 53181A measures frequency, period and peak
voltage. A digit-blanking function lets you easily eliminate unnecessary digits when you want to read
measurements quickly. For higherfrequency measurements, choose an optional second channel that provides
measurements up to 1.5 GHz, 3 GHz, 5 GHz, or 12.4 GHz. A selfguided shallow menu makes this counter
exceptionally easy to use.

Standard

(0° to 50° C)

Medium Oven

(Option 001)

High Oven

(Option 010)

Ultra High Oven

(Option 012 for 53132A only)

Note that power to the time base is maintained when the counter is placed in standby via the front panel switch.

The internal fan will continue to operate when in standby to maintain long-term measurement reliability.