Tektronix 2212 User Manual

Trigger
@ HOLDOFF Control
The HOLDOFF control adjusts the Holdoff time.
In Non-Store mode the holdoff time starts at the end of the
sweep.
In Store mode the holdoff starts at the end of the acquisition
cycle and ends when the waveform data has been transferred
from the acquisition to the display memory and the
pretrigger portion of the acquisition memory has been filled.
After Store mode holdoff ends, the next acquisition can be
triggered after the Non-Store Holdoff ends.
Store mode holdoff time can be much longer than the sweep
time so that several Non-Store holdoffs may have occurred
during Store holdoff time. This ensures that Store mode trig-
gering is controllable by the HOLDOFF control and will be
stable if the Non-Store display is stable.
@ RESET switch
Pressing the RESET button will arm the trigger circuit for one
of two actions:
A single sweep in Non-Store SGL SWP
A single acquisition record in Store SGL SWP
The triggering requirements are the same as in NORM trigger
mode.
After completion of a Non-Store sweep or a Store acquisition
record, pressing the RESET button rearms the trigger cir-
cuitry to be ready for the next triggering event.
In Store mode, selecting SGL SWP mode and pressing the
RESET button does not immediately turn on the READY
LED, because of the pretrigger portion of the acquisition
memory starts filling after the RESET button is pressed. The
READY LED is turned on when the pretrigger memory is full.
The storage acquisition system is then ready to accept a trig-
ger event. At the end of the acquisition record the READY
LED is turned off. This may be several seconds or minutes
before the current acquisition is complete.
2212 User Manual
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Tektronix 2212 Specifications

General

Brand	Tektronix
Model	2212
Category	Test Equipment
Language	English