The TEKTRONIX Type 2245A 100 MHz Oscilloscope

Either of the two input channels (1 or 2) can be used to display the NaI pulses. Connect the signals to the appropriate channel and choose the display via the buttons in the section labeled MODE. The vertical gain can be adjusted independently for each channel. Turn up the READOUT intensity to see the vertical and horizontal scales across the lower portion of the screen.

The horizontal sweep can be triggered externally or by the pulse itself. Set the trigger select to A, the mode to NORM, the channel to either 1 or 2 (depending on which input you’ve chosen) and the coupling to DC. Choose the trigger slope to be positive or negative depending on the type of signal you’re looking at, and adjust the trigger level until a trace appears; the TRIG'D indicator will light whenever a pulse has triggered the display. The signal height and width can be measured using the MEASUREMENTS buttons and the TIME/POSITION cursors.