[R-390] OT: I bought a 'scope

[Barry]

I'm not sure, but it appears there are two indicators at work on the delayed sweep settings rotary switch (one for channel A and one for channel B).  
It appears the B channel is set to 50ms and the A channel is set to 500ms.

Someone mentioned that it's also apparent that none of the horizontal display buttons are selected and, in this condition, it may default to A 
channel.  If so, then a 500ms sweep time may be much more in line with what's shown (given a 50ms shutter speed).

I suppose I'll find out in a week or so...

Thanks for the advice guys.

Barry