I can't find the exact manual for this pretty simple old oscilloscope (pretty good functionally) - I've found some pretty similar ones, for other models - so I have a couple of questions regarding the front panel.
There is a small pin labeled Gate o/p. Is this something like a probe callibration output? Next to it there is a "banana plug" socket input for external trigger (obvious) and ground. What is this ground used for (since there is a mains ground similar socket at the back panel)?
Thanks in advance
PS. I found this info here https://www.electronicdesign.com/displays/cross-trigger-two-oscilloscopes-create-delayed-sweep-display Does it give any help or clue? Apparently it's a signal. It's a binding post that supplies a positive pulse for the duration of the timebase (according to the similar osc. tektronix's manual). Any idea how it can be used?