3
Troubleshooting
3-68
9921-FS PRODUCT MANUAL
9921-FS-OM (V1.18)
Table 3-4
Troubleshooting Processing Errors by Symptom
Symptom
Error/Condition
Corrective Action
• DashBoard™ shows Video
yellow icon and Input Invalid
message in 9921-FS Card Info
pane.
• Card edge Input Format LEDs
show continuous cycling.
No video input present
Make certain intended video source is
connected to appropriate 9921-FS card video
input. Make certain BNC cable connections
between frame Rear I/O Module for the card
and signal source are OK.
• DashBoard™ shows none in
Reference message in
9921-FS Card Info pane.
Frame sync reference not
properly selected or not being
received
• If external frame sync reference is not
intended to be used, make certain the
Framesync Mode selection list is set to Free
Run or Input Video as desired.
• If external frame sync reference is intended
to be used, make certain selected external
frame sync reference is active on frame sync
frame bus. (External reference signals
Reference 1 and Reference 2 are distributed
to the 9921-FS and other cards via a the
frame bus.)
Refer to Framesync function menu tab on
page 3-21 for more information.
Card does not pass video or
audio as expected. Control
settings spontaneously changed
from expected settings.
Event-based preset
inadvertently invoked
Event-based preset loading should be set to
Disabled if this function is not to be used. Read
and understand this control description before
using these controls to make sure engagement
for all expected conditions is considered. See
Event Based Preset Loading (p. 3-55) for more
information.
Audio routing can be affected by failover
controls that are located on the Audio Bus
Input/Routing tab. See Audio Bus Input
Routing/Controls (p. 3-32) for more information.
Video/audio synchronization or
delay noted.
Source synchronization
condition
Use the Audio/Video Delay Offset controls to
compensate for video/audio delay.
Refer to Audio Bus Input Routing/Controls
function menu tab on page 3-32 for more
information.
Ancillary data (closed captioning,
timecode, Dolby
®
metadata,
AFD) not transferred through
9921-FS.
VANC line number conflict
between two or more ancillary
data items
Make certain each ancillary data item to be
passed is assigned a unique line number (see
Ancillary Data Line Number Locations and
Ranges on page 3-9).
AES audio not processed or
passed through card.
AES Port Direction Select not
set to match intended use for
AES rear module port.
Each AES channel pair has port direction
selectors that set the AES as input or output.
Make certain port is set as input or output, as
intended, in accordance with Output Audio
Routing/Controls (p. 3-42).
