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

[Barry]

Listers,

I bought a Tektronix 465M (a.k.a. AN/USM-425(V)1) from eBay (see item #350273674446). When I saw the 
trace, I figured the image was shot with a shutter speed about 1/250 second and with the sweep time 
set to 50ms, that would have been about the length of trace shown (approximately 8/100 of the 
horizontal scale).

I copied the picture locally and examined its properties.  It turns out the image was shot at 50ms 
(1/20s) so I looked back at the photos and noticed the delay time "UNCAL" lamp is illuminated.  
Given a 50ms shutter speed and the trace covering approximately 8/100 of the horizontal scale, then 
(if I did the calculation correctly), the sweep speed would be about 625ms.

I'm not all that familiar with this scope, but I assume the sweep can be slowed to that speed - at 
least in the 50ms setting.  Is this a correct assumption?  I ask because I hope the scope is not too 
broken (if broken at all).

Obligatory R390 reference?  Well, maybe I'll use it to look at something on an R390[A] one day...

Thanks,
Barry - N4BUQ