Tektronix T202 User Manual

Expanding the Record Between the Timing
Cursors
The delta-time feature of the instrument can be
used to expand a portion of the waveform record
to full display width on the delta time sweep . The
expansion of the waveform record of interest is in-
versely proportional to the settings of the X cur-
sors . Repeat the delta-time instruction to return
to the original mode of operation .
Press: I SHIFT! I A TIME EXPAND ON/OFF 1
Display: None
Positioning
An acquisition record is 12 . 8 divisions in length, of
which the center 6. 4 divisions are normally dis-
played. Horizontal positioning of the display to
observe the first or last 3. 2 divisions of an acquisi-
tion record can only be performed after the record
has been stored In save reference memory . See
• Positioning a Reference Signal" in the Save Ref-
erences part of this section .
Delta Time Measurements
Time Difference
Time difference between the X (timing) cursors
are automatically measured in seconds and dis-
played in the channel data readout . To measure
the time difference between the X cursors in
hertz, press the I SHIFT I and I 1:::,,, T /
1
/t:,,, Tl keys and
read the results from the channel data readout.
To return to time difference in seconds , press the
I SHIFT I and I 1:::,,, T /
1
/t:,,, Ti keys once again.
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Trigger
Source
The trigger source for each channel can be se-
lected by pressing the ~ , I EXT I , or
I CH 2 ! key in the following instruction:
Press: I TRIG SOURCE /S LOPE I ~
Display: TRIG SIS CH 1
Auto Level
In Auto Level mode , the trigger level is automati-
cally set at the center amplitude point of the
vertical input signal. The Auto Level mode is not
allowed for external trigger source .
Press: I AUTO LEVELi
Display : AUTO L VL
NOTE
The voltage level for external trigger is
set at about 1.5 V in Normal Trigger
mode , Auto Trigger mode , and Single
Sweep mode .
Normal
When in Normal Trigger mode, the trigger voltage
level points are manually adjusted . Triggers only if
the voltage level pointer falls within the peak- to -
peak limits of the applied signal.
Press: I NORMAL I
Display: NORM
- Operating Instructions ----4-7

Tektronix T202 Specifications

General

Brand	Tektronix
Model	T202
Category	Test Equipment
Language	English