25 May
2009
25 May
'09
10:26 a.m.
My first oscilloscope was a 40MHz valve model made by EMI.
All the scope probes were connected by UHF connectors, they were
reliable and I never had any problem with them.
Incidentally at first it confused me because the displayed signal went
through a long delay (hundreds of inductors) whilst the trigger did
not so I thought there must have been an earlier signal which
triggered the sweep until I read the manual and realised I was looking
at the entire rise of the signal which triggered the sweep. A lovely
bit of kit but, though I still have it, valves, nor any analogue
circuitry are in my repairing expertise.
It even has a 25MHz dual trace plug-in unit.