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V,=2V
Operating Instructions-PG 506 (SN 8040000 & up)
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3 383
·07
Ag. 2-6. Typical low frequency response curve.
Figure 2-8 illustrates waveform distortion due to in
correct high-frequency com pensations. Ringi ng indicates
incorrect peaking adj ustments or undesired inductive
effects, while excessive overshoot and rolloff indicates
incorrect capacitive adjustments. Limited hi gh-frequency
response is also indicated by risetime measurements that
are much slower than expected (see Risetime Con
siderations). Impedance mismatching will usually show
up at excessive aberrations somewhere along the flat
portion of the waveform
.
Repackaging Information
If the Tektronix instrument is to be shipped to a
Tektronix Service Center for service or repair, attach a tag
showing the owner (with address) and the name of an
individual at your firm that can be contacted. Include the
complete instrument serial number and a description of
the service required.
Save and re-use the package in which your instrument
was shipped
.
If the original packaging is unfit for use or
not
available,
repackage the instrument as
follows:
@
Surround the instrument with polyethylene sheeting to
protect the finish of the instrument. Obtain a carton of
corrugated cardboard of the correct carton strength
and having inside dimensions of no less than six inches
more than the instrument
dimensions.
Cushion the
instrument by tightly pack ing three inches of dunnage
or urethane foam between carton and instrument on all
sides. Seal the carton with shi ppi ng tape or an i n
dustrial
stapler.
A. Low frequency phase
lagging.
~-
r--
......
B.
Low frequency gain is
low.
c.
Low frequency gain is high.
Fig. 2-7. Distortion of square waves caused by low frequency
effects.
Ringing
j
r
IV
l
f
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3
3 83-09
Fig. 2-8. Typical waveform showing ringing at front
corner.
The carton test strength for this instrument is 200
pounds per square
inch.
3383 -08
2-9
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