R.V.R. Electronica RX1-NV LCD, User Manual

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RX1-NV LCD
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USER MANUAL Rev. 1.2 - 13/12/01
4. General Description
RVR Elettronica’s RX1-NV is a professiona FM receiver with harmonic distortion
lower than 0.1%. Its audio characteristics make it suitable for broadcasting
applications, where high fidelity performances are needed.
Its external box is 2HE high and mountable on standard 19” racks.
The user interface comprises a graphic LCD display and a knob (encoder). Using
this elements, it is possible to read all the working parameters of the device and to
modify the changeable parameters, for example the working frequency or the
audio output configuration.
In the standard version of the receiver, the demodulated signal is provided to the
user in the form of MPX (that is, the composite baseband signal) as well as in the
form of mono. There are also two connectors for the output of RDS or SCA
subcarriers.
As an option, the RX1-NV can be equipped with a stereo decoder section. In this
version, the output of the device comprises the left and right channels, the MPX
signal and the possible subcarriers.
Two types of RF front-end sections are available.
The standard version employes a RF filter that is tuned on the working frequency;
this kind of front-end is particularily suitable when the receiver is part of a
retransmitting system, since it gives the best quality in the received signal.
Optionally, the RX1-NV can be equipped with an input section featuring a RF filter
that is automatically tuned by the control software when a certain working frequency
is selected. This kind of front-end also includes a double antenna input; the used
antenna input is selectable via software.
The RX1-NV is designed in a modular way: the different functionalities are
performed by modules that are directly connected with male and female connectors
or using connector-terminated flat cables. This kind of design facilitates the
maintenance or the possible substitution of the modules.
The receiver’s control software implements an alarms system that is completely
user-configurable. Among the possibilities, an important one is the capability of
changing the working frequency if an alarm is raised.
The RX1-NV can also be fitted with a RDS board, than enables the user to
controlthe different RDS parameters and to manage alarms as a function them.
The RX1-NV offers an auxiliary audio input, that is particularily useful when one
doesn’t want to let silence intervals to go on air: if an audio signal is connected to
this input, it will be routed to the audio output of the receiver as soon as the muting
function is triggered.