by "ian field" <dai.ode@[EMAIL PROTECTED]
>
Jun 23, 2008 at 10:10 PM
"instantwow" <instantwow@[EMAIL PROTECTED]
> wrote in message
news:fd9d99a3-f1d9-47ab-82e2-9b0b20900bff@[EMAIL PROTECTED]
recently purchased an oscilloscope on Ebay. It is a 100Mhz model. I
was configuring the scope using the calibration output, which is a
1Khz 2 volt square wave. The horizontal line drawing on the scope
looks good, however, the vertical trace ****tion on this wave is barely
visible at the highest brightness setting. Is the normal, or is there
a problem with the scope? Is this common with analog scopes? This is
my first oscilloscope, so I’m not sure. Here’s a photo I took. Any
ideas?
http://www.flickr.com/photos/27262651@[EMAIL
PROTECTED]
looks more or less normal but to be on the safe side, turn down the
brightness so you don't burn holes in the phosphor and select a slow sweep
speed so you can easily follow the spot as it crosses the screen and
adjust
the astigmatism (Astig) until the spot is as near to perfectly round as
you
can get it.
