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Oscilloscope help, please :)

Discussion in 'Troubleshooting and Repair' started by sheps, Sep 4, 2011.

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  1. sheps


    Sep 4, 2011
    Hi everyone,

    I'm new here, I was told about your website from a friend whos used it before with his problems, so I thought I would give you guy/girls a shout to see if you can help me :)

    Okay, cut a long story short.
    I got myself a oscilloscope to do some calibration on my camera I have, thing is, I only know the basics of a oscilloscope, so I need to have a few things explained to me.

    If you take a look at the link I've posted you can see part of a service manual.

    Its telling me (correct me if I am wrong)
    Extend VA-83. Test point for G-ch would be oscilloscope connected to TP-3, grounded to E1, and I assume an external trigger on TP18 on the extenstion board.

    Can anyone explaine to me what the "trigger HD" is? as somewhere else in the manual it says "trigger VD" HD, VD? Whats the difference?

    Now, next problem.

    If you look at this picture

    Extend the VA-83 board again, close the iris, gain set to 18.
    Connect the oscilloscope to TP-39 on the extenstion board, now I dont understand the part at the bottom on the picture where it says "H trig:HD" and "V trig:VD" and well to be honest the "H saw/V saw" and "H para/V para"

    So, thats it, sorry for the oversized post!! But I would really appriciate help from anyone :)

    I dont know if it will help, but I have a old tektronix 475 oscilloscope.

    Thank you :)
  2. shrtrnd


    Jan 15, 2010
    What PROBE are you using with your scope?
    It'll say on it 1:1 (one to one), 10:1, 100:1, or may be a specialized probe.
  3. sheps


    Sep 4, 2011
    On the side of the probe is has x1, ref, x10. I've been using it in the x1 mode.
  4. sheps


    Sep 4, 2011
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