R.V.R. Electronica RX1-NV LCD, Руководство пользователя

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RX1-NV LCD
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USER MANUAL Rev. 1.2 - 13/12/01
If the receiver is working correctly, the LEDs “alarm” and “waiting” will be off. The
respective meanings are that the power supply is correct, and that the PLL is
locked on the working frequency.
At this point, the software enters the main cycle, displaying the default screen.
Figure 5-3
The default screen can be divided in the following part:
•
Left column: status icons. The icons that can be shown are the following:
The PLL is locked
This icon is present if the receiver is working on the backup setup
(frequency and antenna)
Indicates that the working frequency is centered with respect to the
received carrier
This icon means that the auxiliary input is routed to the audio output.
This situation is bound to the intervention of the muting functionality.
This icon is present if the received program is stereo (only with
Stereo decoder or/and RDS decoder options)
Indicates that the RDS signal is correctly received (only with RDS
decoder option)
•
On the right of the icons, there is a double VU-meter column that indicates the
instantaneous modulation level. 100% in this scale corresponds to a standard
75 kHz modulation
•
The upper part of the screen contains the following indications:
•
Working frequency (modifiable)
•
Antenna used (A1 or A2, modifiable only when the tuneable RF front-end is
present)
•
Offset between set and received frequencies
•
Analog representation of the received signal level
•
Muting level setting
• In the lower part of the screen, there is a bar (inverted visualization) indicating
the status of the automatic managment system of the machine
Mut This is the “muting” status. Off indicates that the muting function is
idle, so that at the receiver’s output there is the received signal; On
indicates that the muting is activated, so that the receiver’s output is
silenced, or replicates the Aux In, if such input is used.