Tester (multifunction?)

[sheckila]

There is a measuring device which shows a graphic representation when measure a certain point (connection) on the faulty electronic scheme. Then measure the same point (connection) on the serviceable electronic scheme. After comparison of two graphic representations come to a conclusion: here there is a malfunction or not.

Very much for a long time saw such device, but has forgotten the name and the manufacturer.

Who knows, please write. Thanks!

 

[alexan_e]

I can only think of the oscilloscope Oscilloscope - Wikipedia, the free encyclopedia
Usually service manuals have test points and the traces that should be measured there, is this what you mean?

Alex

 

[sheckila]

Thanx, but is not oscilloscope.

 

[alexan_e]

What king of graphic does it generate and what king of device does it check?

 

[sheckila]

This measuring device reminds in the external sizes:
http:// www.fluke.com/fluke/caen/Bench-Instruments/Timer-Counters/6690.htm? PID=55086
Can hardly less.

Explain on an example as it works:

Before you two identical electronic schemes.

One of them faulty, and the second in a full order, for comparison (reference).
There is no need to connect these electronic schemes to power supply!

The measuring device a have two probs (on one for each scheme). When measure what or a point on the serviceable scheme, on the display of the measuring device (lcd) there is a curve which corresponds to an impedance in this point.
The second probe measure the same point only on the faulty scheme.
If two curves coincide (some deviations are admissible) that in this point malfunction isn't found .

If there are deviations between two graphic representations it is necessary to search for fail component (s) arround this point.

Thus it is possible to compare any points between electronic schemes and if will have the luck)), to find malfunction.

 

[Kripton2035]

it seems to be a huntron component tester
here : Huntron Product Overview
regards,

 

[soptea]

**broken link removed**
This one is the simplest to build

 

[sheckila]

Thank you Kripton!