Oscilloscope help, please :)

[sheps]

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. http://i779.photobucket.com/albums/yy78/james_sheppard52/Dualtrace.jpg

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 http://i779.photobucket.com/albums/yy78/james_sheppard52/Trigger.jpg

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

 

[shrtrnd]

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.

 

[sheps]

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

 

[sheps]

I dont know if this will help, but this is the probe I've been using

http://i779.photobucket.com/albums/yy78/james_sheppard52/KGrHqZhQE3vg6bF5sBOFPHzlQ0_3.jpg