Preface

Description of the 225 MHz Counters

The HP 53131A and HP 53132A are universal counters capable of measuring frequencies to 225 MHz on Channels 1 and 2. With an optional Channel 3, this frequency is extended to 3.0 GHz (Option 030); 5.0 GHz (Option 050) or 12.4 GHz (Option 124).”

For the HP 53131A, frequency and time interval resolutions are 10 digits in one second and 500 picoseconds, respectively. The HP 53131A provides users with an HP-IB measuring speed of 200 measurements per second, and is suitable for bench-top operation and lower-volume ATE operation. The frequency and time interval resolutions for the HP 53132A are up to 12 digits in one second and 150 picoseconds, respectively. The HP 53132A provides users with exceptional resolution, and is ideal for ATE systems operation.

The HP 53131A/132A basic measurement functions include Frequency, Period, Pulse Width, Duty Cycle, Rise/Fall Time, Time Interval, Frequency Ratio, Totalize, Phase, and Peak Voltage.

The HP 53181A is a frequency counter capable of measuring frequencies to 225 MHz on Channel 1. Depending on which optional Channel 2 the counter contains, this capability is extended to 1.5 GHz (Option 015) or

3.0GHz (Option 030). The HP 53181A has a frequency resolution of 10 digits in one second.

The HP 53181A provides users with an HP-IB measuring speed of 200 measurements per second, and is suitable for bench-top and ATE operation.

The HP 53181A basic measurement functions include Frequency, Period, Peak Voltage, and Frequency Ratio (if Channel 2 is installed).

The HP 53131A/132A/181A include additional measurement functions and features that are designed specifically for manufacturing and service applications:

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Assembly-Level Service Guide

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HP 181A manual Description of the 225 MHz Counters