MADELL O-Scope question - Electronic Circuits Projects Diagrams Free

Ambient · 24th March 2007, 04:46 PM

here is a quick question. What is the vertical mV/div for this scope? It says:

"1mV-1V/div, 5%" for the accuracy, but also says

"CH1 Signal Output: 25mV/div, 50 ohm, 20Hz-10MHz(-3dB)"

Is the CH1 Output some kind of output? And if its really the input then would that make the inputs 25mV/div instead of 1mV/div mentioned in accuracy specs? I know it may seem like a dumb question, but I don't want to buy a new scope that has 25mV/div for the lowest setting.

http://cgi.ebay.com/NEW-20MHZ-ANALOG...QQcmdZViewItem

This is their "mini" version, which specify having 5V to 5mV/div. I may get this instead.
http://cgi.ebay.com/NEW-10-MHZ-MINI-...QQcmdZViewItem

Anyone ever use these scopes? I did not find any reference to them in the forums. If I am the first one I will have to write up a little review for everyone. The scopes are a pretty good deal.

**Nigel Goodwin** · 24th March 2007, 04:57 PM

You might try looking at the manufacturers website? http://www.madelltech.com/m1-4.html

The spec is 5mV per division, with 1mV per division using a x5 switch on CH1 only. The output is simply an output after the preamp - handy for connecting a frequency counter to, one of my scopes has a similar output.

Ambient · 24th March 2007, 05:01 PM

Thanks Nigel. I did do a search in google but all I got was ebay links. That site didn't come up in the results that I went through for some reason. I only searched for "Madell" so that may be why.

The mini 10MHz scope would be nice due to its size, but that screen must be only 2" or 2.5" tall. Yikes. As long as the traces are sharp and clear it will be OK. Anyone used it yet?

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24th March 2007, 04:46 PM	(permalink)
Ambient	MADELL O-Scope question here is a quick question. What is the vertical mV/div for this scope? It says: "1mV-1V/div, 5%" for the accuracy, but also says "CH1 Signal Output: 25mV/div, 50 ohm, 20Hz-10MHz(-3dB)" Is the CH1 Output some kind of output? And if its really the input then would that make the inputs 25mV/div instead of 1mV/div mentioned in accuracy specs? I know it may seem like a dumb question, but I don't want to buy a new scope that has 25mV/div for the lowest setting. http://cgi.ebay.com/NEW-20MHZ-ANALOG...QQcmdZViewItem This is their "mini" version, which specify having 5V to 5mV/div. I may get this instead. http://cgi.ebay.com/NEW-10-MHZ-MINI-...QQcmdZViewItem Anyone ever use these scopes? I did not find any reference to them in the forums. If I am the first one I will have to write up a little review for everyone. The scopes are a pretty good deal.

24th March 2007, 04:57 PM	(permalink)
Nigel Goodwin	You might try looking at the manufacturers website? http://www.madelltech.com/m1-4.html The spec is 5mV per division, with 1mV per division using a x5 switch on CH1 only. The output is simply an output after the preamp - handy for connecting a frequency counter to, one of my scopes has a similar output. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

24th March 2007, 05:01 PM	(permalink)
Ambient	Thanks Nigel. I did do a search in google but all I got was ebay links. That site didn't come up in the results that I went through for some reason. I only searched for "Madell" so that may be why. The mini 10MHz scope would be nice due to its size, but that screen must be only 2" or 2.5" tall. Yikes. As long as the traces are sharp and clear it will be OK. Anyone used it yet? Last edited by Ambient; 24th March 2007 at 05:10 PM.