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Performance Verification
4–12
SPG 422 Service Manual (B034000 and above)
d. Check that the amplitude is 800 mV
±
80 mV (each major horizontal
division of the graticule is 100 mV).
3. Rise and Fall Times (between 0.40 ns and 1.50 ns)
a. Connect the equipment shown in Figure 4–1.
b. Set the WFM 601E to display CH A eye pattern.
c.
Use the WFM 601E variable gain control to make the eye pattern
amplitude exactly 10 major divisions (1 V).
d. Place the bottom of the eye pattern on the –0.3 graticule and the top on
the 0.7 graticule.
e.
Activate the timing cursors and align the first cursor with the position
where the rising edge of the eye pattern intersects the –0.1 graticule
(20% point). Align the second cursor with the intersection of the rising
edge of the eye pattern and the 0.5 graticule.
f.
Read the
t from the waveform monitor.
g. Convert the value from the waveform monitor to the actual rise time
using the table below.
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Measured Rise Time (ns)
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Actual Rise Time (ns)
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.640
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.400
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.710
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.500
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
0.780
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
0.600
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.860
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.700
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.900
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.750
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.940
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
0.800
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
1.000
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
0.900
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.100
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.000
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.200
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.100
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.300
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.200
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
1.400
ÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁ
1.300
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.500
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.400
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.600
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1.500
h. Check that the actual rise time is between 0.400 and 1.500 ns.
Summary of Contents for SPG 422
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Page 14: ...Service Safety Summary x SPG 422 Service Manual B034000 and above ...
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Page 228: ...SPG 422 Service Manual 9 8 A7 Serial Filter ...
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