Contemporary Research
11
232-ATSC+1 HDTV Tuner
HDMI
Symptom: No Video or Signal
Most monitors accept HDMI in the RGB and Component color space, but there are exceptions. Try
switching from RGB to Component.
Switch between 720p and 1080i, or down to 480P or 480i for old DVI sets.
If you’re connecting via a Cat5 interface, HDMI receiver, or switcher, some delay the HDCP signal
slightly out of range. Call CR Support on how to extend the delay on HDMI.
Symptom: No audio or fluttering sound in display speakers connected via HDMI
Change ATSC digital audio to PCM or PCM variable (not all displays accept Dolby 5.1)
Symptom: Scan or “fluttery” lines at top of video, usually on an analog channel
Use the Overscan menu to crop the video a bit. What you’re seeing is the data (captioning) portion of the
video. Adding a bit more overscan will eliminate the lines at the top.
Composite Video
Symptom: Composite video out has small image in 16:9 setting, analog channels
For a 4:3 set, tune to an analog channel and press
RATIO
on the remote or
Setup: Screen Format
on onscreen menu to set to 16:9. Image will fill left to right, you’ll always have a black band top and
bottom.
Set to 4:3 if you’re only feeding video to 4:3 TVs.
Set output ratio on a digital channel as well - this a different setting than for analog channels.
If the tuner is used for 16:9 displays and analog TVs, choose the best setting for the widescreen,
and the NTSC will have to be a compromise. Most of the time, setting the RATIO while tuned to an
analog channel and again for a digital channel will provide the best result.
IR Control
Symptom: IR remote won’t control tuner
Hold down IR remote
Select
, press
9
, and release both. Front-panel setting should be
IR On
. In addition,
check if the remote works when the lights are off. Some energy-saving fluorescent lights produce
interference at our IR frequency (57 Hz). Try to cover the IR sensor so the lights don’t affect operation, or
add the IR-RXC External IR Sensor. It’s easier to hide and tilt the sensor to help with reception, and you can
try Select and 4 to use the lower IR frequency (the RXC has both types of sensors).
Captioning on Video Outputs
Symptom: Video out does not include captioning data
The 232-ATSC+1 provides on-screen captioning on all ports. No captioning
data
is carried on any HD port
(HDMI, RGB, and Component standards do not support carrying captioning data). However, the composite
video output does carry Line 21 captioning data when tuned to either an analog or digital channel.
