Triggering System; Setup - Tektronix 2212 User Manual

General Product Description
Triggering System
The triggering system provides triggering from the channel
1
and/or
channel 2 signals or from the external trigger input
(EXT INPUT OR Z). Types of trigger signals recognized include:
Internal : This type of triggering is fully configurable for
LEVEL, SOURCE, MODE, COUPLING, and SLOPE.
External : This triggering source is configurable for SLOPE,
LEVEL, MODE, and COUPLING like the internal sources.
You can choose the pre-trigger point within the acquired waveform
record by selecting the amount of pre-trigger (25% or 75%)with the
PRETRIG switch.
The hold-off time can be adjusted with the trigger HOLD OFF con-
trol.
The EXT OR Z input, at the bottom of the TRIGGER section, can be
used to apply either an external trigger signal to the trigger circuit
or an external Z-axis (display intensity) control signal to the Z-axis
circuit.
Setup
The setup function allows you to automatically setup the instru-
ment with the push of a single button (AUTO).
The SET UP feature is intended to automatically set the vertical,
horizontal, triggering and display controls, to display an unknown
waveform on the crt screen with an optimized front panel set-up.
With the SA VE and RECALL function, you can respectively save
the current front panel set-up in the memory, or recall the last
stored front panel set-up from that memory.
With the SA VE and RECALL button pressed simultaneously, the
MENU screen is called.
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