Contemporary Research QMOD-HDMI 2 제품 설명서 - 페이지 5

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Installation Overview

Always start by defining the 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, you can test operation with a local TV. Set your RF level down to 9 dB for testing.

That's a key point – with a local TV you can see your results immediately, and you don't have to deal with any

issues once you distribute the RF feeds in the building. It helps to know it's working in the rack – then check

performance at each TV.

You'll need to re-scan the channels when you complete the install process – the TV won't know the

channel information until you do. Also why you use a local TV – once you have everything defined, you only

need to scan the remote TVs once.

Just a few things to know:



HDMI – we can't pass encrypted HDCP content, we do accept up to 1080p - downscaled to 1080i,

and we can work with 60/30 Hz, VGA standard, and PAL video



SDI – we accept up to 1080p video, as well as 30/60 and PAL refresh rates. Captioning can be

embedded or from the CC port, audio is embedded or from a separate audio input



RGBHV – we accept just about all HD and VGA resolutions, see below if you need to tweak the video

to fill the screen



Component – use the free DB9 to Component cable for the QMOD-HDMI 1.5, and we do accept 1080p

video



Video – accepts NTSC or PAL video, check the previous page for rules



None – you can choose None for the Program B, making the modulator a one-channel unit

You won't always be aware when the hardware scalers fix "not exactlys," non-standard video and PC signage

video. If you want an edge-to-edge signage presentation on TVs (which crop off the edges of the video), you

use the Horizontal and Vertical menus to shrink/zoom the video and move horizontally and vertically. Generally,

you want to move the image to line up with the left edge, then zoom or shrink to match the right edge. About

the same for Vertical, lining up the top edge, then zoom/shrink to meet the bottom.

Once you get to the more advanced options, such as assigning a Virtual Channel ID, naming the program, using

IPTV, SAP – you can still use the front-panel menus, but the Web pages will be quicker. See page 11 to learn

how to use the front-panel USB port to use the Web pages. Once you set the feature, you can plug and play

with all QMODs.

It's hard to get in all the issues here, but yes, you can output the stream as a QAM RF channel, IPTV channel,

or as both. The stream will be the same for both, so a 2-program IPTV stream will run at 38.4 Mbps if both are

set to 18 Mbps. Unicast, where the stream is pointed at one specific player, works on all networks. Multicast will

only work of all the site's routers are upgraded and setup to support Multicast operation.