Tektronix 2230 - Dot Only, No Line

[bluearchtop]

Hello! First, let me say I am new to scopes (sorry!).  I just got a 2230 which I was told was working but I can't seem to get it to show the horizontal line. Only a dot. I've tried lots of different things, but apparently not the right thing.    Here is a photo of what I have.  I actually don't have the probe yet (it's on the way). Does a probe need to be connected for the line to show?

Thanks!

[Jeff eelcr]

Have not used that model but you can use a piece of wire from probe test to center of ch 1 input BNC. ADD is not correct for only one channel selected, turn on ch 2 use ALT or chop and play with controls on right side, see what you can get.
Jeff

[bluearchtop]

Thanks, that was helpful. Using wire for the probe got it showing a line.  Appreciate it.

[Ground_Loop]

It looks like the XY mode button is pressed.  That will produce a dot with no channel inputs.