Contemporary Research 8 QMOD-SDI
General Symptoms and Solutions
That’s good news – it means the TV is receiving the channel from the
QMOD. The green (or blue, purple) background means that there is no video
input or the resolution of your source doesn’t match the QMOD settings.
Black Screen or No Signal
Reset the QMOD by pressing the Left and Right arrows together.
No video – check input wiring and settings
Tip – you can use RCA to HD15 cable to connect YPbPr
Wrong resolution – set both to match each other
Wrong vertical frequency, source must output 59.94 Hz
Press left and right panel buttons together to reset encoding
PC graphic cards rarely output video-standard HDTV at 720p/1080i, 59.94 Hz
– use VGA scaler
TV One iT-C2-400
Extron DVS-340 (with recent firmware)
Set scaler Hz to 59.94 (some state 60Hz but do 59.94 on YPbPr outputs)
Check cables and input setting
Some players only output 480p/480i on Component
Try changing Resolution
Displays not finding channel in scanning, or have problems locking on to
channel.
Check CRWWW.COM for the latest firmware, download, and install.
The update won’t affect your current settings. Make sure you are set to Vid
Bitrate 18, CVCT On, QAM 256, PMT 0.
You can set QAM to 64 and bitrate to 18. This has the effect similar to
raising RF level by 6 Db.
Test a sample TV connected directly to the QMOD to eliminate problems in
the RF system.
For embedded SDI audio, update to firmware 3.8 or higher. This allows
playback of AES audio that does not use an error correction bit
Check audio inputs and wiring
Set source digital source output to PCM
Some Sharp displays lack the standard QAM codec to play MPEG1 stereo,
those models should be avoided for commercial sites.
Digital signage presentation almost always require a scaler to format the
output for HDTV displays
Use VGA to Component or SDI scaler, set to 720p/1080i, 59.94 Hz
Most HDTV displays overscan video, underscan video to fit to displays
Design signage with safe area
Use Up, down, left, right scaler adjustments to fit
Improve thin lines, small text quality
Using a signal generator or test graphic, adjust quality with Sync TrigLev
setting 1-4. The cable can make a difference at this setting, so use the same
cable for testing as you use for the install.
The DirecTV HD receiver default settings can shift resolutions between
1080i, 720p, and 480p, depending on programming.
The Component input now auto-syncs, but it is better to use a constant
output setting on the DirecTV unit.
Go to HDTV menu
Select Video and turn Native Mode off
Select Resolution and turn all modes off but 720p
Go to Audio, and turn Dolby Digital off
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais