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
7.5 Alarm
In its standard configuration, the receiver has this menu, the connected submenus
and the former
Auto are not activated. The following explanation is related to
receivers with activated automatic alarms management (see chapter 9.2).
Using this menu, it’s possible to set the way the alarm system of the receiver
intervenes. For each submenu, this menu indicates if it’s activated or not.
Figure 7-6
To get into one of the submenus, push the encoder when the cursor is on the
desired item. Hereafter you will find the explanation of the submenus.
7.5.1 Signal Alarm
Figure 7-7
Setting of the alarm related to the received signal level for the standard working
frequency. The alarm will be raised when the signal level remains below the level
(
Req.Lev - Margin
) for
Interv
seconds. The alarm will be cancelled when
the signal goes below the level (
Req.Lev - Hyster
) for
Recover
seconds.
Req.Lev
setting of the level normally required for the received signal
Margin attenuation margin permitted for the received signal without the alarm
being raised
Hyster Level histeresys to activate/deactivate the alarm. This setting permits
to avoid instability situations when the received signal level fluctuates
around the threshold level
Interv
delay for the alarm to be reised (the level has to remain below the set
level during the time defined by this variable before the situation being
interpreted as alarm)