Author Topic: HP 34401A, Error 602  (Read 1138 times)

0 Members and 1 Guest are viewing this topic.

Offline diewindowsdie

  • Newbie
  • Posts: 2
  • Country: ru
HP 34401A, Error 602
« on: October 22, 2015, 05:26:16 am »
Hi guys!

Received my HP 34401A from ebay seller today. Full self-test reports error 602, which is RAM read/write error. I have also checked main functions - DC voltage/current, AC voltage, continuity test, frequency, resistance - and everything seems to work fine (except for out of calibration maybe, can't check that). So my question is - why a multimeter actually needs a RAM? It is only for programming-related stuff? What is the consequences on leaving it as-is in terms of being able to perform basic measurements?

Thanks.
 

Offline bitseeker

  • Super Contributor
  • ***
  • Posts: 7185
  • Country: us
  • Lots of engineer-tweakable parts inside!
Re: HP 34401A, Error 602
« Reply #1 on: October 22, 2015, 09:48:22 am »
The logging function likely uses the RAM. Also, any temporary settings would go into RAM. The calibration values would be stored in non-volatile memory, so no worries there.

For basic measurements, you're probably fine. I'm not sure about the math functions, though. Give them a try.
EEVblog is the place to be for TEA.
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7064
  • Country: us
    • SiliconValleyGarage
Re: HP 34401A, Error 602
« Reply #2 on: October 22, 2015, 12:13:46 pm »
the 34401 has like half a megabyte of ram. you have to remeber there are 3 CPU's in that thing ... plus 3 asics plus 2 flash roms plus an eeprom ...
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf