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fluke PM 3394 Autoranging CombiScope 200MHz 4 Channel

时间:04-04 整理:3721RD 点击:
Hello, I recently came across this forum while looking for some information about a new to me Oscilloscope I recently purchased. My primary use for the scope will be to assist in working on Amateur Radios, and related circuits to do with Radio in general. I have been an Industrial Electrician for the past 20 plus years, and have a very solid foundation in electrical theory, electrical applications, circuitry and all of the realitive things associated with being Industrial Electrician, I specialized in process automation via PLC, also Voice Data Video, but also did the nuts and bolts type stuff like bending and installing conduit, pulling and termination of wires from Power feeds to Transformers, MCC gear, and Panels in general. As well as control circuits, stop start stations, Instrumentation and the likes, basically if an electron flows through a wire, I have done it.

I have also been a self taught electronics technician since the age of 14, I began my journey of working on electronics with 11 meter radios, peaking and tuning them and fixing general issues with Microphones, power cords, soldering etc. As I got paid for my work, even at 14 I invested that money back into the hobby, and bought manuals, and equipment to help me be a better technician.

Later in life I became an Amature Radio operator, and also a volunteer for the RACES organization (Radio Amateur Civil Emergency Services) so fast forward to today, I have a very well equipped technicians workbench, as far as Soldering/Desoldering irons go tip cleaner, voltage meters of various sorts, an old 10 Mhz scope, and recently a new scope which is the new to me fluke PM 3394 Autoranging CombiScope 200MHz 4 Channel Just about everything on my bench is made by Hakko, decent equipment for the price point and serves my needs well.

My question is this: Is there an RF probe or a probe that I need to better help in my working with RF and Radios in general. The Scope comes with 2 1x-10x probes sealed factory new, the scope itself is also factory sealed, and recently calibrated, I got a great deal on it, and being 4 channels I think it will serve my needs. I had a Communications Engineer friend look at the specs before I purchased it and he said it was more than adequate for my needs.

So, what would you guys suggest I get as far as probes go? I admit im new to Scopes, I know just enough to be dangerous at this point, but as with anything I'm a fast learner, and will do much research before just randomly sticking my probe where it doesn't belong... No pun intended lol... The 4 channels from what the manual stats are 1M Ohm to 50 ohm if that helps with what probe I should use.

Thanks in advance! and I hope to correspond with all of you in the future!

Sincerely,
Marlin Thompson

I think I speak for most of us on here: the x1/x10 probes should be fine for all your RF and radio needs. Just make sure you calibrate the probes before using them.
Set the scope to 1M input impedance, set the probe to x10 and connect it to the 'cal' or 'calibrator' output on the Scope, also connect the ground probe clip, there will be a ground connection point close to the calibrator output. Then set the timebase and amplitude so you can see the cycles of square wave clearly, maybe three or four cycles across the screen and half screen amplitude. Then all you have to do is adjust the probe for best square wave using a small (ideally non-metalic) screwdriver in the slot on the probe body. Take care, the adjustment is fragile and if you break it the probe becomes useless. Look for square corners with no curved corners or spike overshoot. Repeat for the other probe. Note that the adjustment only works in x10 mode, in x1 it connects straight through so the adjustment has no effect.

Brian.

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