Kikusui oscilloscope?

[Vrystaat]

Gooday all,
I can get a Kikusui cos 5020 tm dual channel scope in working order for very little money. I do not know this brand. Does anybody have experience on this brand ?

 

[PedroDaGr8]

Kikusui is a known Japanese brand. That particular model is very low end and much older. Kikusui isn't known for their extensive support documents.

 

[Vrystaat]

Thanks for the reply Pedro, I can get it for $45. I have tested it and sine waves looks fine but square waves slopes downward on the positive cycle and upwards on the negative, so something is faulty. I will leave it as I have other scopes.Maybe If I can get one that is 100% , because it is cheap and is easy to work.

 

[googlyone]

'it sounds like you have the oscilloscope on AC coupling - in which case this would be perfectly normal for low frequency square waves.

 

[AndrewT]

Does it have a switch for AC and DC coupling for each channel?
What are the range of adjustments for vertical sensitivity and horizontal time base?

 

[Salas]

Maybe the probe needs tweaking its cal screw

 

[Vrystaat]

Thanks Salas, that I will check although with the same probes the square wave is 100% 0n my other scopes, but it can be calibration as you say. Andrew, here are a few pics.

 

[Vrystaat]

another Pic. I will scheck on the probes tomorrow morning, is currently 39 degC in the shade !

 

[PedroDaGr8]

Thanks Salas, that I will check although with the same probes the square wave is 100% 0n my other scopes, but it can be calibration as you say. Andrew, here are a few pics.

Yep, this is very much just a simple compensation adjustment. The probe just needs to be fine tuned to match your scope. The turn the set screw in your probe and it should clean up. There is nothing wrong with your probes or the scope.

 

[Vrystaat]

Thanks Pedro, I found the adjustment screws on the bnc connectors of the probes. Will check them tomorrow !

 

[AndrewT]

another Pic. I will scheck on the probes tomorrow morning, is currently 39 degC in the shade !

5mV/div to 5V/div is a reasonable range for typical Member use especially at $45

 

[Pano]

There is nothing wrong with your probes or the scope.

I disagree Pedro. The display is obviously rotated 270 degrees, which is probably why the price is so low.

 

[Vrystaat]

Thanks all,
One cannot believe that such a small screw with such a small adjustment can make such a large man happy. Thanks again !

 

[Salas]