Recall Reference Switch; Sa Ve Reference Switch - Tektronix 2212 User Manual

Storage
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RECALL Reference Switch
Pressing the RECALL switch button will cause the waveform
stored in the reference memory to be displayed on the crt.
Pushing the button while the reference display is on causes
the reference display to be blanked.
Positioning of the reference waveform occurs with the TRace
SEParation control (called the Reference Separation with
respect to the reference waveform) independent of the CHl 1
and CH 2 POSITION controls. When the RECALL function is
off (no reference waveform is displayed), the TR SEP (REF
SEP) control is inoperative.
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SA VE Reference Switch
When you press the SAVE Reference Switch while the 2212
is in Store mode, the displayed waveform acquisition is writ-
ten into the reference memory and any existing reference
memory is overwritten by the displayed waveform acquisi-
tion . The stored waveform remains displayed on the crt. The
reference waveform is retained when the instrument is
switched between Store and Non-Store mode.
Only traces positioned entirely inside the screen area will be
saved correctly when placed in the reference memory. Wave-
forms placed outside the screen area will be clipped at the
point where they cross the top and bottom of the screen. This
is most noticeable when a waveform which is partially off
the bottom of the screen is saved in the reference memory.
The reference waveform, displayed when repositioned with
the TRace SEParation control, will be clipped at the point
that the waveform originally crossed the bottom of the
screen.
2212 User Manual
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