Storage Controls; Store On Switch; Pretrig Switch; Hold On/Off Switch - Tektronix 2212 User Manual

Storage
Storage Controls
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Store ON Switch
With the Store ON switch you select or de-select either the
Non-Store or the Store mode of the 2212.
When Store mode is selected, the Store LED lights. When
Non-Store mode is selected, the Store acquisition is turned
off, and the last waveform acquired in Store mode remains
in memory until the power is switched off.
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PRETRIG Switch
The PRETRIG switch selects 25% pretrigger time or 75%
pretrigger time in Store mode.
In RECORD mode or SGL SWEEP ROLL mode (see
Table 5-2), the trigger position is shown in the display by
an intensified dot.
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HOLD ON/OFF Switch
In Store mode, you can stop the display from being up-
dated by pressing the HOLD ON/OFF switch.
If the Store display mode is ROLL (see Table 5-2), the cur-
rent acquisition is stopped immediately upon pressing the
button. Pressing the button again causes the acquisition to
continue where it was stopped.
If the Store display mode is RECORD (see Table 5-2), the
current display is held immediately upon pressing the but-
ton. When the button is pressed again, the acquisition is
restarted.
When you select HOLD, "HOLD" appears in the crt readout
acquisition status field, and it replaces "ROLL" if the 2212
is in ROLL mode.
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