Products > Test Equipment
Mastech MS5308 LCR meter with ESR measurement - on discount at the moment
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Fraser:
Well the MS5308 has arrived  :)

I bought it from AideTech US but it came via DHL from a UK source (Impact Express) so delivery was fast and no duties payable  :) I presume they have a UK agent working for them.

I have only just opened the package and its...well....... gorgeous !  ;D

The unit is very well built and looks like you could drive a car over it without killing it. A real 'quality' look as well. The kit that comes with it is equally nice  :)

I can't wait to test it.

The only negative is that there are not any 4mm sockets on the side as per the Russian instructions....maybe they caused a problem with pickup or something ?

For now I attach the picture of the kit as it arrived...... all shiny and new   :)

Aurora
Fraser:
Brothers in Arms.......

The Mastech MS5308 along side my Tektronix THS720 ....they look made for eachother  ;D
Fraser:
Some quick pics of the display.

Its well backlit and very easy to read with good contrast and viewing angle.

Any colour aberrations are due to the photography, its a nice cool blue/white backlight.

The last picture shows the ESR mode.


Next installment will be some tests  :)
Fraser:
I may have the answer to why the 4mm sockets have been removed from the MS5308.

I just checked the Kelvin clip lead and it is wired in 4-Wire configuration. The adapter blades that plug into the meter are double sided FR4 PCB with each side connected to one of the Kelvin clip tips. I'm impressed, none of your common old 2-Wire stuff here  :)

The SMD tweezers have their 4-Wire configuration changed to 2-Wire to suit the 2 contact tweezer tips

Aurora
Fraser:
Well I have just completed my first quick checks on the unit and all appears to be working correctly. I used the Kelvin clips to test a pile of capacitors, resistors and inductors then compared the readings with my Wayne Kerr meter that is lab standard but hasn't been calibrated in years. All readings tally and the error on close tolerance Mica capacitors shows that the LCR meter is well withon its specification tolerances. The same applies to Resistance. All well withing the specifications.

I threw some known suspect, New old stock, and new Electrolytic capacitors at the the meter to see how the ESR readings stood up. It identified every known faulty capacitor plus a few NOS ones that I would now throw away. The readings on the new capacitors were all within the manufacturers acceptable tolerances. 

The readings are taken pretty quickly and are very stable. I really like this LCR meter already.

I'll do some more tests in slower time but I am now happy that my unit is fully operational.

It was interesting to see the Q reading on a 10mH inductor change as I stepped through the frequencies that the meter can generate. It was also interesting to see that the meter refuses to measure a large value (2200uF) capacitor at the 100kHz test frequency  ;) 
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