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Finding The Answer - HP 1652B Getting Started Manual

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Finding the
Answer
As you look at the overlapping waveforms, you notice there are
transitions on the data lines during the read cycle, indicating the data is
unstable. You have found the probable cause of the problem in this
routine. Additional troubleshooting of the hardware will identify the
actual cause.
HP 16528/1653B
Timing/State Measurement Example
Front-Panel Reference
21-l 5
[ml-
Display
68000STll1E-
State
Listing
-0003
ooe900
3000
I.28
us
-0002
OOOdFC
0000
I .24
us
-Qoo 1
0004F6
8930
I .24
us
iggG?ij
008930
803C
1.24
US
+ooo I
008932
OOFF
I .24
US
+0002
008934
67F8
I .28
us
+Ooo3
008936
BO3C
I .24
US
6800OTItlNG
- Timing
mvef arms
X to Trigger
0
s
Tlme/Dtv
[
SO0 ns ]
Delay
[
0
s ]
0 to Trigger
_
0
S
_
#
V
Unstable Data
Figure 21-13. Unstable Data

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