Grass Valley PVS Series System Guide v.4.0 Dec 10 200 - Manual (Page 231)

Problems with video
July 27, 2001 Profile XP System Guide 231
Problems with video
This troubleshooting aid provides corrective action for some common video
problems. Search the table for the problem you are experiencing, then try the
corrective action. Some problems have more than one corrective action.
Problem Possible Cause(s) Corrective Action
Video output distortion in
playback and E to E. Wrong video standard. Verify system video standard is
configured correctly. Refer to
“Changing the system video
standard” on page 116.
Horizontal aberrations
free-running through the picture
in Record mode (or E to E).
Sometimes intermittent
depending on the input signal
selected. Input frame sync set to “pass”
when incoming signal is
asynchronous. Set frame sync to “Auto-time”.
Refer to “Options for timing
asynchronous feeds” on
page 114.
Continuous horizontal picture
shift in Record mode (or E to E).
Sometimes intermittent
depending on the input signal
selected. Input frame sync set to “pass”
when incoming signal is
asynchronous. Set frame sync to “Auto-time”.
Refer to “Options for timing
asynchronous feeds” on
page 114.
Playout timing is 16 lines
delayed Playout timing set to E to E
timed output. Change playout timing to
“Zero-Timed” output. Refer to
“Adjusting playout timing to
match zero time” on page 108.
Vertical shift when switching
between video input and
playout. Playout timing set to
Zero-Timed output. Change playout timing to
“E to E-Timed” output. Refer to
“Adjusting playout timing to
match E to E timing” on
page 110
Compression artifacts are
present in the output. Video quality setting is too low
for your program material. Select higher video quality
preset (refer to “Guidelines for
selecting Video Quality Presets”
on page 118, or define your own
video quality preset. Refer to
“Defining and selecting a
custom video quality preset” on
page 123.