Nautel XR6 Preinstallation Manual

Nautel XR6 Preinstallation Manual Manual pdf 22 page image

XR6/XR3 Pre-installation Manual DescriptionPage 1-2 Issue 3.0 2009-07-15Remote control and monitoringThe XR6/XR3 remote control and monitoring options allow you to run a multiconductor signalingcable from the transmitter to a remote control board. This option lets you monitor all key parametersof transmitter operation, and control common functions, such as power output and exciter selection.RedundancyThe 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 isoptional.Ac powerThe XR6/XR3 variable power transformer can be set to use a range of input voltages and powerfrequencies, as described in Section 2, “Installing the power transformer” on page 2-1of the XR6/XR3 Installation Manual.OptionsDCCThe XR6/XR3 supports Dynamic Carrier Control (DCC) as an optional module. DCC reduces thepower of the carrier when the sideband power drops below a threshold (that is, when there areperiods of silence in the program content). This reduces overall power consumption.IBOCThe XR6/XR3 supports IBOC digital radio as a modulation option. The external IBOC signalsource provides a signal to the XR6/XR3 exciter.DRMThe XR6/XR3 supports Digital Radio Mondiale (DRM) radio as a modulation option. The externalDRM signal source provides a signal to the XR6/XR3 exciter.