Nautel XR3-PREINST, Руководство по предварительной установке

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XR6/XR3 Pre-installation Manual Description
Page 1-2 Issue 3.0 2009-07-15
Remote control and monitoring
The XR6/XR3 remote control and monitoring options allow you to run a multiconductor signaling
cable from the transmitter to a remote control board. This option lets you monitor all key parameters
of transmitter operation, and control common functions, such as power output and exciter selection.
Redundancy
The XR6/XR3 features redundancy in all key systems:
• RF power modules *
• Exciters
• Cooling fans
* The standard XR6/XR3 transmitter configuration contains one RF power module. A second RF power module is
optional.
Ac power
The XR6/XR3 variable power transformer can be set to use a range of input voltages and power
frequencies, as described in
Section 2, “Installing the power transformer” on page 2-1 of the XR6/
XR3 Installation Manual .
Options
DCC
The XR6/XR3 supports Dynamic Carrier Control (DCC) as an optional module. DCC reduces the
power of the carrier when the sideband power drops below a threshold (that is, when there are
periods of silence in the program content). This reduces overall power consumption.
IBOC
The XR6/XR3 supports IBOC digital radio as a modulation option. The external IBOC signal
source provides a signal to the XR6/XR3 exciter.
DRM
The XR6/XR3 supports Digital Radio Mondiale (DRM) radio as a modulation option. The external
DRM signal source provides a signal to the XR6/XR3 exciter.