Author Topic: Advantest R6551 DMM  (Read 1939 times)

0 Members and 1 Guest are viewing this topic.

Offline radhaz

  • Regular Contributor
  • *
  • Posts: 211
  • Country: us
Advantest R6551 DMM
« on: March 27, 2015, 03:57:08 am »
Hi guys.
I have an Advantest R6551 DMM bought off of Ebay. It mostly works OK, but the AC functions are pretty much dead (ACI, ACV). Using my DMMCheck I get no response on ACV or ACI), DC stuff and ohms are good.
There is not a service manual to be found anywhere. Any ideas about where to begin looking? This DMM is from around the late 1980s early 1990s.
 

Offline rastro

  • Frequent Contributor
  • **
  • Posts: 363
  • Country: 00
Re: Advantest R6551 DMM
« Reply #1 on: March 27, 2015, 09:09:25 pm »
Advantest doesn't seem to have much information available on most of their test gear.

FWIW some principals of operation are in the back of the user manual.  http://exodus.poly.edu/~kurt/manuals/manuals/Other/ADV%20R6551,%20R6551EMC%20%20Operation.pdf

Since it's all A/C functionality not working you may want to look for a relay that routes the input's for the A/C path from the banana jacks.  Perhaps DC is the default path?

It might be worthwhile to post a few pictures of the insides. 
« Last Edit: March 27, 2015, 09:37:54 pm by rastro »
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf