Nautel NX100, Руководство по предварительной установке

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NX100 Pre-installation Manual Description
Issue 3.2 2017-03-31 Page 1-1
Section 1: Description
This section provides a basic description of the NX100 transmitter and includes the following topics:
• Capabilities
• Options - see page 1-3
Capabilities
Power
The NX100 is capable (with 120% positive peak modulation) of up to 110 kW of RF carrier power.
The maximum continuous average power (carrier plus modulation) is 150 kW (corresponding to 100
kW of carrier power with 100% continuous tone modulation) the NX100 is capable of operating
indefinitely at this power level.
The operator can vary the power continuously or switch to preset power levels using the NX100
graphic user interface (AUI). The power output can also be scheduled to correspond with authorized
daytime power levels.
Modulation
The NX100 is capable of double sideband (AM) modulation. With the addition of an optional
internal signal generator, IBOC modulation can be provided to the exciter. DRM modulation can be
provided to the exciter with an external modulator that produces I/Q over AES.
Antenna tolerance
The NX100 will operate at rated power with a VSWR of up to 1.5:1. A higher VSWR results in a
protective reduction of output power. The greater the VSWR, the greater the reduction in RF power.
(To maintain the quality of digital broadcasts, lower VSWR levels are required. Consult with Nautel.)
The NX100 will not fail or completely shut down, regardless of antenna or feedline failure.