
CHAPTER 1: QAM MULTIPLEXER
VersAtive
®
Pro, DigiVu
®
II, DigiVu
®
II Micro – Operation Manual
8-1
QAM MULTIPLEXER
8. QAM Multiplexer
Multiplexes comprised of one or many programs may be created with outputs on QAM modulators(if equipped) (M-QAM is the
hardware model used by ATX Networks and is an industry standard modularized QAM Modulator).
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M-QAM hardware module input is fed externally from ETH1 so all QAM traffic will be reported on ETH1 port.
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QAM channels are provided in adjacent frequency related groups of four.
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Center frequency of the first (lowest frequency) channel may be specified for each group of four.
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Each adjacent channel center frequency is incremented by 6 MHz from the first specified frequency.
8.1 Chapter Contents
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8.2 Setup a QAM Modulator
This setup is required only if QAM modulators are provided as a hardware option.
•
Click to select the
Device
in Tree View, Figure 1-1.
1. Click the
QAM Output Devices
tab.
2. Edit the
Frequency
of the lowest RF channel, then select the QAM mode from the drop down(default is 256).
3. Tick the boxes adjacent to QAM channels to enable or untick to disable individual QAM outputs.
4. Edit
RF Level
to set output RF level per channel in dBm. Mouse over the information icon
for valid RF level
range.
5. Click
Save
to apply the changes when finished.
Figure 1-1: Setup QAM Output Device
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