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-   -   Analog or Digital tester? (http://forums.pelicanparts.com/porsche-911-technical-forum/7724-analog-digital-tester.html)

Rick Lee 08-31-2001 06:27 AM
Analog or Digital tester?
 
My Bentley manual says to use a digital volt meter. Can I get away with using my analog one? Or are there some tests which can only be performed with one or the other? Mine is an '87 Carrera. Thanks.

Early_S_Man 08-31-2001 07:08 AM
Certainly, some system tests such as on the alternator would be fine. The issue is really impedance, not analog or digital. Some tests can damage the O2 sensor, for example , with a low-impedance VOM! If you have an old V.T.V.M. or FET-input VOM, worry not!

Otherwise, get a digital multimeter ... even cheap ones have a high input impedance!

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Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler


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