what do you need to misure?
the state of the input bits?
the oscillator frequency)
the Dout word?
where the signal out is connected? rf? ir?
what’s the circuit?
according to the data sheet, the maximum encoder osc frequency is 100Khz, then a t/div not less then 10micros is needed, start with it, and then go up!
the signal output seem to be in the same range of the Vcc, then misure the pins 9/10 (if use a 18 pin ic) or 9/20 (if use a 20 pin ic), and set the DSO V scale to misure this signal.
select single trigger (trig mode), low to up front (tr. kind) , and set the the Vtrig (trg level) beetween 0 and Vcc
according to the data sheet, the signal is repeated 4 time for every TE enable, then if you hold down the TE, it’s repeat the code forever.
locate the code, seem to be simple, the signal (12 bit) is ended with a sync bit that is
4 bit long, with a 1/8 bit ON pulse, then locate the large low space.
if you wiil see sometinghs similar, i’ve inspected a IR signal from a ir command, see the screenshot captured with the old firmware from the last page to the second!!!
davidea.it/elettronica/45-va … ml?start=3