HP 35658A Tachometer/Trigger Module

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The HP 35658A provides tach and triggering information for use with digital order tracking and resampling software. The module uses a 20 MHz counter to record accurate tack or trigger times. The HP 35658A can also be used to externally trigger other measurements.


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Tach Pulses/Revolution    0.00001 to 65,536

RPM Accuracy              ± 100 ppm

RPM Range                 0.25 to 6,000,000 rpm

Tach Pulse Rate           4.762 MHz to 100 kHz

Input Impedance           > 20 k

Minimum Trigger 
Pulse Width               100 ns

Weight                    1.5 Kg (3.2 lbs)


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HP 35658A      Tachometer/Trigger Module
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HP 3565S Measurement Hardware Technical Specifications

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To help you make the right instrument choices

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Page Updated: Thursday November 13 07:16:09 UTC 1997