Tektronix DAS9100 User Manual

Service Administrative Support
S3200 SERIES SITE LOG BOOK,
062-7232-00 (CONT.)
Section VII - General
Additional system information may be
I
filed in this section.
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1
11
j Section VIII - Service Records
The last section of the Site Log Book
may be used to file Service Records.
w2 Issue 13-20
S-3200 2943/2944 CORRECTION FOR SIGNAL
EDGE JITTER
Ref: 2943/2944 Manual, P/N 070-3335-00
Mod #50198
Wizard's Workshop, Issue 13-8,
April 15, 1983, Pg. 9, S-3200
2943/2944 Clock Standardization
Mod #M45157.
In some 2943/2944 clock generators the
clock signal edges may vary (jitter)
between 400 ps to 1 ns. The jitter is
caused by high signal impedance,
signal sources and cross talk to
adjacent signals.
The solution is to decrease source
impedance to increase the drive
current. This will stabilize the
signal and reduce cross talk effects •.
On the Cycle Length Board 670-5383-05
change Rll3, R114, Rll5, Rll6, R132,
Rl33 from 1.BK P/N 315-0182-00 to a
270 ohm P/N 315-0271-00. Change board
P/N to 670-5383-06. On the Clock Phase
Board 670-5425-01 change R300 and R301
from a 1.5K ohm P/N 315-0152-00 to a
270 ohm P/N 315-0271-00, change board
P/N to 670-5425-02. On the Programned
Cycle Board 670-5417-01 change R211
and R212 from 1.8K ohm P/N 315-0182-00
to 270 ohm P/N 315-0271-00, change
board P/N to 670-5417-02.
The following are locations of the
changes on partial drawing of
schematic and parts layout:
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(ARTICLE CONTINUED ON THE NEXT PAGE)
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Tektronix DAS9100 Specifications

General

Brand	Tektronix
Model	DAS9100
Category	Measuring Instruments
Language	English