Tektronix 2337, Инструкция по эксплуатации

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Triggered Magnified Sweep
The following procedure explains how to operate the
B Sweep in a triggered mode and to determine the resulting
apparent magnification factor.
1. Perform steps 1 through
8
o f the preceding "Mag­
nified Sweep Runs A fter Delay" procedure.
2. Set the B TRIGGER SOURCE switch to the same
position to which the A TRIGGER SOURCE switch is set.
If external triggering is used, connect the required signal to
the B EXT input connector.
NOTE
The B D E L A Y TIM E PO S ITIO N c o n tro l w ill n o t
provide c o n tin u o u sly variable delay when the B
TRIGG ER SOURCE sw itch is set to V E R T MO DE,
CH 1, CH 2, o r EXT. A d ju stm e n t o f the B D E L A Y
T IM E P O S ITIO N c o n tro l w ill s till p o s itio n the B
Sweep w ith respect to the A Sweep, b u t the B Sweep
w ill occur o n ly when p ro p e rly triggered. The in te n ­
sifie d zone seen in the A IN T E N H O R IZ MO DE
display w ill move fro m trigger p o in t to trigger p o in t
as the B D E L A Y T IM E P O S ITIO N c o n tro l is rotated.
3. Adjust the B TRIGGER LEVEL control so the inten­
sified zone on the A trace is stable. If an intensified zone
cannot be obtained, see step 4.
4. Inability to intensify the desired portion o f the trace
indicates that the signal does not meet the triggering
requirements. If the condition cannot be remedied either
by using the B Sweep triggering controls or by increasing
display amplitude, you should do the following in the
sequence indicated: lower the VO LTS/DIV switch setting,
set the B TRIGGER SOURCE switch to EXT and trigger
the B Sweep externally, and then reset the VO LTS/DIV
switch fo r the desired display amplitude.
5. The apparent magnification factor can be calculated
from the same formula shown in step 9 o f the "Magnified
Sweep Runs A fter Delay" procedure.
DELAYED-SWEEP TIME
MEASUREMENTS
Operating the 2337 Oscilloscope w ith HORIZ MODE
set to either A INTEN or B w ill permit time measurements
to be made w ith a greater degree of accuracy than can
be attained w ith HORIZ MODE set to A. With the B
TRIGGER SOURCE switch and RANGE/FUNCTION
60
2237 Operators
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