Hi!
That's a "Digital Transistor" you have there, it's a DTA114 PNP Digital Transistor – there were used by the dozens in 1970s and 1980s Japanese made VCRs, and are made in groups A, B or C or X, Y or Z according to the values of their internal series base and base/emitter resistors. The NPN type is DTC114 marked "C114" and a suffix letter. There are also surface–mount SOT–23 versions of these things, but data is fairly readily available!
You won't get the normal 0.6 – 0.7V b/e drop with these – they were designed to be directly connected to chip outputs, etc., without an intervening series resistor, for this reason a lot of testers can't identify them correctly but I believe the Peak Atlas can!
Going back to your scope, if the base is pulled low the collector voltage of the DTA114 you showed us should come up to the emitter voltage (I've not looked at the circuit yet but I'm assuming it's connected as upside–down PNP with emitter going up towards an LT+ point and collector down towards chassis–earth/0V)
Hope this helps!
Chris Williams