Control And Status Page - Wegener DTV701 User Manual

DTV 701 User's Manual
Control and The Control and Status page (see Figure 3.1 Control and Status Page on
Status Page page 22) allows you to select the off-air channel number for the HDTV input.
The status section provides signal status.
The RF Input Control is used to select the video channel. Select the Broadcast
radio button for off-air signals or the Cable radio button for cable television
signals. The user enters the desired channel number and clicks the Tune button.
The unit then tunes to the desired channel and sends back the status informa-
tion via the Status frame on the right side of the web page. The unit then peri-
odically updates the page with ongoing status reports.
As with the traditional television broadcast, you will need a good-quality
outdoor antenna pointed toward the transmitter. With the antenna correctly
positioned and the cable connected to the DTV700's RF input, select the
channel number on the front panel or via the web interface. Note that this is
the ATSC RF channel number (not the broadcaster's legacy analog channel).
Weak Signal - If you're within reception range you should see an SNR
between 20 dB and 35 dB with no errored seconds. An SNR less than 20 dB
with accumulating errored seconds indicates a weak signal condition that
results in impaired video and audio. Check antenna pointing for maximum
signal (higher SNR). If this is not successful, you may need a line amplifier
or a higher gain antenna.
Multipath - If you have video problems and the SNR shows wide fluctua-
tions, you could be experiencing multipath reception which is the reception
of the direct signal and a strong reflection. Rotating the antenna away from
the interfering signal may solve this problem.
At bottom left, PSIP may be enabled or disabled by selecting On or Off. Enable
PSIP in order to change output channel numbers and channel short name.
The received signal parameters are labeled RF Input. This section includes
frame lock status (true or false), signal-to-noise ratio (in dB), errored seconds,
and signal strength quality. The ASI Output section lists the output stream data
transport rate as well as the output lock status. (The QAM modulator associ-
ated with the data rate is shown after the data rate, 64 QAM for 26.97 Mbps or
256 QAM for 38.81 Mbps.)
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Acquiring Broadcast ATSC Signals
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