Contemporary Research QMOD-HDMI 2 Посібник з експлуатації - Сторінка 5
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Друкувати сторінкуInstallation Overview
First Things
Always start by defining channel, video and audio inputs by selecting the QUICK menu. Press SETUP, move left or right and press
SELECT. Use Up - Down and Right – Left, then SELECT to save your choices. At this point, test operation with a local TV.
The default RF level is 29 dBmv. If the application requires a lower level, use RF attenuators to reduce the level. There is a menu where
the levels can be reduced down to 9 dBmv, but lowering the RF level can impact channel quality, especially for channels 2-6.
That's a key point – with a local TV you can see your results immediately, verifying correct operation before distributing the channel
through the RF system. It helps to know it's working in the rack – then check performance at each TV.
Re-scan the channels when the install process is complete – the TV won't know the channel information until it scans. That's the value
of a local TV – once everything is defined, remote TVs are only scanned once.
Inputs
Just a few things to know:
•
HDMI – Input can't pass encrypted HDCP content, accepts up to 1080p - and 59.94/60/30 Hz, VGA standard, and PAL video is
scaled as well. For more information, view our Support Blog on
•
SDI – Accepts up to 1080p 3G video, as well as 30/60 Hz and PAL refresh rates. Captioning can be embedded or from the CC
port, audio is embedded or from a separate audio input. Now users can select SDI audio pairs 1-8.
•
RGBHV – Accepts most HD and VGA resolutions and scaling generally creates a correct image for TVs
•
Component – use the free HD15 to Component cable for the QMOD-HDMI 1.5, which can accept 1080p video
•
Video – accepts NTSC or PAL video, check the previous page for rules
•
None – choose None for the Program B, making the modulator a one-channel unit
•
Audio – Encoder will pass through AC-3, stereo PCM and analog can be encoded as AAC, AC-3 or MP12
Scaling
In general, PC presentations via HDMI 1080p will be very close edge-to-edge, as the data from HDMI gives us the information needed to
exactly scale the image. Some TVs vary in how they present the scaled image, the best for LG will be the Just Scan mode, Normal for
Visio, or similar for other brands. This will be similar for 1080p RGBHV PC video - for resolutions less than 1080p horizontal and vertical
Zoom, Left, Right, Up, and Down positioning may be needed to correctly display the image. If the video source is 1080p, and the
program is set to IP only and Auto Res On, the stream will be encoded as 1080p.
Advanced Setup
Front-panel menus can be used for all settings, but the Web pages can speed up the process for advanced settings.
IPTV
It's hard to get into all the issues here, but yes, the MPEG stream can be output as a QAM RF channel, IPTV channel, or as both. For 2
programs, RF will carry a single MPTS stream, and IP will send two independent SPTS streams. Unicast, where the stream is pointed at
one specific player, works on most networks. Multicast will only work of all of the site's routers and switches support Multicast IGMP
operation. Streams can be sent in UDP or RTP formats
EAS Emergency Alert Service
Any video and audio input can be set as the EAS source. A latching contact closure (NO –GND to SW) or 5-24 VDC voltage (GND to V+)
will trigger the event. The EAS AV will be sent through both programs when active, and reverts to the original inputs when released.
Web Pages
You can access the Web pages via a network, or from the front-panel USB port; the internal IP address is 192.168.227.227. See Support
Blog
http://contemporaryresearch.com/dougs-q-tips-viewing-web-pages-usb-port/
Reset Options (
Just a short press on designated buttons)
•
Pressing the Left and Right arrows does a soft encoder reboot (some components like HDMI aren't reset)
•
Resetting DC power will reset all system components without changing settings
•
Pressing Left and Right arrows during power-up resets to your custom settings (see Advanced Menu page)
•
Pressing Up and Down during power-up clears everything, resets to factory settings – use with caution
Contemporary Research
Using HDMI
on setting up the IP connection.
5
QMOD Modulators HD/IPTV Encoders
Sources.