Philips PM3350A - Waveform Comparison

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4 APPLICATIONS
4.3.5 WAVEFORM COMPARISON
The register memories Rl, R2 and R3 make it possible to store different wave¬
forms in the oscilloscope memory. These signa s remain stored after power down
and can be displayed on screen whenever needed. A possible application is
signal comparison.
First select one of the register memories with the REGISTERS menu. This menu
is entered by pressing the MEMORY softkey and then pressing the REGISTERS
softkey. Now load a reference signal into the selected register memory by
pressing the LOAD key. In this way all three register memories can be selected
and filled with reference signals.
Now a measured ("live") signal (RO) can be compared with one of the stored
reference signals by displaying the signals on screen simultaneously.
The measured signal can be moved on the screen by means of the Y POS rotary
knob. But when the instrument is in the LOCK-mode, the measured signal and
the stored signal can be moved on the screen by using the SHIFT function (see
page 4-44).
4.3 MENUS AND MEASUREMENTS