Connect with us

Tek 475 trigger problem

Discussion in 'General Electronics Discussion' started by fwb232, Oct 26, 2008.

Scroll to continue with content
  1. fwb232


    Oct 26, 2008
    Initially there was no sweep on my recently acquired Tek 475. Then I replaced the trigger generator IC U600 p/n 155-0049-01 with a new 155-0049-02. Now I get sweep, but it is impossible to sync the trace. Sweep is free running in all modes (except single) and slope +/-, level controls have no effect, only the "A Trig Holdoff" has some effect on low frequency signals. The "triggered" light is always on.
    Any advice ? Is there a difference between the -01 and -02 IC's that can cause this ?
    Thanx for any hint. (I've another scope for troubleshooting)
    Last edited: Oct 26, 2008
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day