Contemporary Research QMOD-HD Manual - Manual (Page 8)

Contemporary Research 8 QMOD-HD
General Symptoms and Solutions
Symptoms Solutions
Status Codes Appears on QMOD front panel display
Encoder Error “R” appears at top left of front panel display, notes the encoder is resetting:
 Usually the VGA or scaler output is not set to 1080i/720p 59.94 Hz – Use
the Measure menu to see the H and V frequency
 Press the left and right arrows together to reset the QMOD
 If neither fixes the condition, call CR Support
“X” appears, notes there is no communication with the encoder
 If you check the Firmware menu, the last 4 characters might be “0000”
instead of 02E5 or 02E7
 Call CR Support
 Video signal  “V” Appears when the QMOD can’t see a video signal – often when unit is
set to Component and the source is RGBHV.
 No FPGA firmware (QAM)  “xxxxxxx” appears when you use the firmware loader, or press the right
arrow when you view the firmware version on the QMOD.
 V X.X = Control Firmware
 02A2 = Encoder Firmware
 J83B and following = FPGA firmware
“xxxxxxx” means that the FPGA firmware is incomplete or corrupted.
 Re-install firmware or call CR Support if you can’t update.
Green screen 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.
Black Screen or No Signal Reset the QMOD by pressing the Left and Right arrows together.
Component No video – check input wiring and settings
Tip – you can use RCA to HD15 cable to connect YPbPr
Wrong vertical frequency, source must output 720p 59.94 Hz , 1080i 29.97
Press left and right panel buttons together to reset encoding
PC VGA QMOD screen states No Signal or Incorrect SIG
DVD Check cables and input setting
Blue-Ray players only output 480p/480i on Component, requires HDMI to
Component interface by others.
Tuning Issues Displays not finding channel in scanning, or have problems locking on to channel.
Update QMOD Firmware Check CRWWW.COM for the latest firmware, download, and install.
Update Settings The update won’t affect your current settings. Typical settings are Vid Bitrate 18,
CVCT On, QAM 256, PMT 0.
Test offline Test a sample TV connected directly to the QMOD to eliminate problems in the RF
system.
Can’t tune channel This is generally a result of a problem in the “digital handshake” between the
modulator and the TV’s digital tuner. Modern sets such as LG accept a wide range
of settings in the channel and metadata.
 Old TV – try 64 QAM, also note that many old TVs have very poor tuning
capabilities. 64 QAM setting has the effect of raising level about DB –
helpful if RF level is very low.
 Old TV Firmware- TV brands update their firmware as well.
 If the display tunes offline, then there are problems in merging the
QMOD with the RF system.
 Call CR Support
No audio 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.