Protek 608 - Frequency Measurement Procedure

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Ea TIrt seamdmy disp/JJy muIs 1M Itst oolbJge tJIIll 1M CJJpOCiIDr /IllS drargetI
to in flUs ~ 1M tIG!ue is 2.5Y. TIrt azpaciIor is tJrm discJrJuged through
altSistor cin:uit with TIfllvts from 1.5k ohm to 1Megohm dep<nding on
1M 1IIlJJS1lmrrmt rtmge.
3- JO. Hz
1) Rotate the rotary function switch to the Hz position.
2) Aitach
the test lead tips to signal source to be measured.
3) The main display will read the measured frequency.
4) Secondary display will read the AC voltage of the signal source: The
voltage range of the secondary display is 0 to 500V with 10m V of resolution.
5) The AC voltage is specified to 20 kHz as s hown on the AC m V & V spe -
cifications on page 27. When the measured frequency exceeds 20kHz,
the secondary display is no longer useful due to the attenuation of the
signal level.
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3- ll . ±PULSE WIDTH
Frequency Measuremmt
1) Select HzIPW with rotary switch. Press the ALT-F key once -for positive
pulse width measurement or twioe for negative pulse width measurement
2) Connect the test lead tips to the signal source to be measured.
3) The main display will read the measured pulse width .
4)
The secondary display reads the percent duty cycle.