ACM Waveform
This oscilloscope trace shows two of the ACM outputs. The wider pulse is the APD gate request (GTE), lasting 100 ns (this is tunable in multiples of 20 ns). (See the front panel description for definition of signals.) The shorter pulse tucked within the last bit of the gate pulse is the gate-close request (CLS), which results in shutting off the APD gate. The signals are very nicely square, and very clean in the digital sense. Various measurements are presented at right.