Hi,
Just wanted to post my experience in buying a CEM DT-9989.
I was looking for a second multimeter, maybe a successor for my good old Siemens B1026 Multimeter.
The light does not work anymore, the display itself has not the best contrast for my eyes and... doesnt matter, something new was needed
After reading and comparing a lot of multimeters i liked the idea to get one with a basic oscilloscope in it.
I dont really need an oscilloscope and because i have no permanent workplace and not really enough room to stow away a real oscilloscope i decided to get the DT9989.
But i was a little bit sceptic about it.
I ordered one directly from CEM in germany and when i got it i was really pleased.
The haptic and feel, the display... the whole device was really good.
But... it had a dark spot on the display, maybe a little piece of plastic stuck to the display inside the device.
Shaking and tapping did not do anything. Because it was so obviously visible i decided to send it back.
So i got another DT-9989 from a german reseller and it had no such piece of something on the display, tadaaa..
But it had no protective sheet on the display and the way the cables was tied together showed me that it was used already.
The device itself looked very good.
But one of the crocodile clamps (is this the right word ?) was broken.
And while testing it the Ohm resistance range behaved very strange. Sometimes everything was good, sometimes it jumped between OL and some lower values at about 2 Hz and sometimes it stayed at a value between 100 and 200 kOhm.
So the Ohm range has some kind of a loose contact.
So i will send back this device, too... and think about if i should give it a third try
Maybe i should pass on the oscilloscope and go with a brymen BM869 or something like that.
But i really liked the little oscilloscope although it misses a lot of functions and goes only up to 10 MHz.
But for the small things i do once or twice a year it would be enough i guess.