That's not an older Spectrum Analyser!!

Old Spectrum Analysers don't have a "boot cycle".
You turn 'em on,& as soon as the CRT heater warms up--- a few seconds,you can use them!
Seriously though,it looks like a nice unit,but it's a bit worrying that the guy in the video didn't seem to know much about it at all!
He said something about "the right probes",etc--All you need is a BNC or N cable,or in a pinch,stick a length of wire in the RF input & go searching for Radio & TV stations!
Many SAs have a switch position which directly connects the -30dB test carrier,so you can check that you get a usable display just by switching to that.
I haven't had much to do with that generation of instrument.
I went straight from the 140T mainframe plugins,& the SA plugins for HP180 & Tek 7000 series Oscilloscopes to a quite recent IFR analyser.
IFR ,aaarrrrggghhh!--No USB connection!.
It had RS232 remote control
input only!!
The only way to save displays to a PC was by using a floppy disc!
And the stupid thing was new in 2006!
On the plus side,it had a tracking generator & was quite a capable unit once you got used to the shortcomings!
VK6ZGO