I think the very bad is the spec that the multimeter only works to 300v and in some circuits like power supply is more as 315v - the 702 was going to 400v . The other is the wrong mA current mesurement. I think otherside its a very nice and good multimeter and osciloscope. From the specs the should build it without a frequencgenerator and with a better higher voltage resistance . The generator is not really usable .
The big question for usability: when will they make one that allows you to download the raw data for offline analysis. All of these devices only allow you to export a picture, which is useless for any real work. Until they at least start offering the basic functionality of a desktop DSO scope, I can't justify buying one.
I need a movable oscilloscope to check hight voltage noise. The noise may be 300V up to 4kV. Is ZT 703s the good choice? Can it protect itseft from high voltage over 1kV?
703s would be worth the price difference but no temperature measurement kills it for me. Edit 5/16/24: I needed temperature measurement functionality so I purchased the 702s. But the temperature measurement is very inaccurate, off by 5C/10F at room temperature. That is virtually worthless IMO. Don't know if I got a defective one or they're all like that.
I think mine has the same issue. Absolutely worthless since part of the purchase was made because of it having a temp reading. I planned to change the cheap meters to this. Even the cheap meters display the same temps as the other meters in the house, so why no fix on this one?
Hi, I have the ZT-703 (Firmware 138) What is the meaning of the RED marker (on top of the screen? ... and why the timebase has some 'rare' steps? Normal the steps are 1-2-5 (here they are 1,25 - 2,50)
One of them is higher spec than the other but it's not valid to say one is professiinal and the other is amateur / educational. They are both useful tools. Or maybe they are both cheap toys. Depends on your perspective. The difference in price is so small that the 703S is clearly the one to get unless you can find a reason not to.
