Quote:
Originally Posted by Penthode
Just any plain old scope with a an X-Y display will work. Is something inhibiting the display? Make sure the scope is not set to trigger.
Without the RF connected you should see a horizintal line trace. The dots will appears when the marker controls are set mid position. Remember if the marker controls are set fully CW or CCW, you will not see the dots. (And CW in this case is Clock Wise!)
Let's look for the sweep line first. What is inhibiting the trace on the scope? If the sweep output of the generator is not reaching the x input of the scope, you should just see a dot in the center of the screen. It may be you have the scope set to deflect the trace off screen to the left or right.
Maybe to start, let us see the scope display with a dot in the center of the display with NOTHING connected. Then connect the sweep x input to the scope. You then need to raise the brightness and/or adjust the scope X channel centering control. Also make sure you start with the highest setting of the v/div control and it would be useful to begin with the X Channel set to AC input.
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I have the 3MHz sweep line. What I don’t have are the markers. When I push in the button to select a marker I get a read on the marker Nikki tubes that’s very unstable and unreadable