Motorola APEX1000 Installation And Operation Manual page 118

Item
QAM Transmission Mode
Current Transmission
Mode
QAM Module Tab
RF Config Button
Channels Enabled
RF Level Adjust (dB)
RF Level (dBmV/Channel)
TS:QAM
Configuration • QAM Configuration
APEX1000 All-Purpose Edge QAM Software Version 2.4.x • Installation and Operation Manual
573408-001-a
QAM Configuration window field definitions
Definition/Range
Use to select the QAM transmission mode, based on the type of digital cable
system. Current version supports Annex A – DVB, Annex B – ATSC DCII, and
Annex C – Asia-Pacific. (Changes the QAM transmission mode require a
reboot before taking effect.)
Displays the QAM Transmission Mode currently in use (read-only).
Use to select one of the three removable QAM modules.
The LED on the tab is colored to indicate the highest current QAM Module,
QAM RF Port, or QAM Channel alarm status of the QAM Module.
Displays the QAM RF Port Configuration window.
The LED on the button is colored to indicate the highest current QAM RF
Port or QAM Channel alarm status of the RF Port.
Maximum Channels Enabled in QAM Transmission Mode of Annex A is
limited by the Channel Spacing you selected:
•
Range for 2x4 channel QAM Module: 0, 2, and 4
•
Range for 2x8 channel QAM Module: 0, 2, 4, 6, and 8
Enter RF level adjustment here. Range: -8.00 to 3.00. Increment: 0.01. This
value is applied to the block of channels on that output port.
Caution: Adjusting the level such that it exceeds the nominal RF level when
measured at the APEX RF Connector may degrade RF performance. See list
of nominal RF levels below.
Displays the current configured per QAM channel RF level.
The per QAM channel levels noted below are the nominal values
corresponding to an RF Level Adjustment of 0.00 dB:
Channels
The Output Transport Stream numbers (1 – 16, 17 – 32, 33 – 48) and Output
QAM channel.
Each field is colored to indicate the current QAM Channel alarm status. See
APEX1000 LED Color Scheme
1
2
4
6
8
for more information.
B
RF Level (dBmV/Channel)
60
56
52
50
49
100