IBM 3279 2A Maintenance Information page 74

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Example of Convergence Parabola for Badly Converged
Screen
Scope point 82 S06 Sync, etc. as for Convergence
Parabola. If unable to converge, change card 82 then
analog.
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- Skip (Model 2 only)
Scopepoinl 62 G 1 0 Sync. I nlernal 1 V
fern,
0.1
msfem
x 10 probe. If bad. change card C2 then 02.
Figure 6-2 (Part 2 of 3). Waveforms
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Convergence Parabola
Scopepoint 82 506 Sync C2 Z08 (Indicator Row) Use
2 ms/cm Main sweep, 10 Jis/cm. Delayed sweep.
0.2 V/cm x 10 probe.
If bad, change card 82 then analog.
10.8 ms nom (Mod 21
13.8
ms nom
(Mod 3)
- Skip Out (Model 2 only)
Scopepoint 82 Jl1 Sync, Internal 1 V/cm x 10 probe.
If bad, change card 82 then analog.
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Chapter 6. Support Information 6-3