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Joined: Jul 2004
Posts: 9,931 Likes: 34
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Do you have probes?
I looked at the picture and I don't see a calibrate output. Usually scopes have a square wave generator to calibrate the probes and give you a known test source.
Greg Fretwell
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Joined: Nov 2005
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That looks like it's only a 100 kHz scope but the Time/Div. knob is obscured. If the DC Bal. adjustment is correct, the trace should stay in the same place when the probe is grounded and you switch through the Volts/Div. That adjustment tends to drift a lot on low end scopes and don't even play with it until the scope has a chance to temperature stabilize. Joe http://www.mpja.com/20MHz-Oscilloscope-Probe/productinfo/15085%20TEReally reasonable 20MHz X1, X10 probes for $8
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Joined: Feb 2013
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I do have a couple test probes. I will get some better info on them....
I found 2 manuals online for Philips Oscilloscopes but they are not the same model. The PM 3230 appears to be a bit of an odd ball scope since it looks nothing like the models that came before or after. I did find an owner's manual on the 3230 but it's in Dutch.
The guy who sold it to me used it to fix stereo equipment as recent as 3 years ago.
Last edited by Potseal; 01/17/15 03:06 AM.
A malfunction at the junction
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Dwayne
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Joined: Nov 2005
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Can you attach a better picture of the front, showing all the knob and switch names? Most scopes use a 1kHz square wave as the calibration signal. You can bread board up something for that fairly easily.
Joe
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Joined: Feb 2013
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That is a good pic, g. As far as a PM 3230 manual is concerned it looks like I might have an easier time learning to speak/read Dutch than finding an English version. If only I could read Dutch: ![[Linked Image from i59.tinypic.com]](http://i59.tinypic.com/2irooqu.jpg)
Last edited by Potseal; 01/18/15 11:44 PM.
A malfunction at the junction
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Dwayne
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Joined: Feb 2013
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I contacted another owner of a PM 3230 this weekend who was selling his PM 3230 for parts and I inquired if he had a manual for sale. He said despite having numerous connections through various friends, clubs, and organizations he was unable to locate one.
A malfunction at the junction
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Dwayne
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Joined: Feb 2013
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Here is the details of the scope probes I have.
1st probe is an older model
TEK P6105
Attenuation: 10x within 3%
Input Resistance: 10 Mohms
Input Capacitance: 10.5 pF
Compensation Range: 15 pF to 47 pF
Bandwith: (-3 dB) At least 100 MHz for the 1st and 2nd meter
Max Input Voltage: 500 volts (DC + peak AC), derated with frequency
2nd probe is brand new
CIRCUIT-TEST OP-100A
Attenuation: 10x
Input Resistance: 10 Mohms when used with Oscilloscopes which have 1Mohms input
Input Capacitance: 13 pF
Compensation Range: 10 to 30 pF
Bandwith: DC to 100MHz
Max. Input Voltage 600V CAT I, 300V CAT II (DC + peak AC), derating with frequency
A malfunction at the junction
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Dwayne
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Joined: Jul 2004
Posts: 9,931 Likes: 34
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The Tektronic probe is the ones we were using on our newer scopes in 1996. They are good probes. Not sure about the other one. That Ebay picture of the scope I linked is the best I found on the web.
I looked for your manual and all I found was numerous places where you can get a PDF of the Dutch version
Greg Fretwell
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Joined: Feb 2002
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That picture is labeled in Hungarian, not Dutch...
/mike
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Posts: 356
Joined: August 2006
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