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maximum length will be significantly reduced to overcome the disturbances induced on it. The network
must propagate from point to point and never as a star. In any case, it is essential to respect polarities,
to overcome problems of erroneous reference to mass and Vdc, and reliability in data communication.
4.3 BEEPING SIGNALS
NOTES: Each keyboard action is linked to the output of one or more beeps, short or long.
DESCRIPTION
• Press a button.
• Confirm, using the "F " key or
is correct.
• Additional data input request through keyboard.
• There are no user passwords in the receiver; accompanied by slow
flashing of the lighting.
• There is no longer any dialogue with the CTLEV card; accompanied by
the slow flashing of the lighting.
4.4 FIRST START-UP
DESCRIPTION
During the power up phase the keyboard will light up
and at the same time emit a short beep.
If the SEL4 keyboard does not contain any user
passwords in memory, two long beeps will sound and
the keyboard lighting will start flashing slowly.
NOTES: If there is at least one user password in memory, keyboard lighting will dim after 5 seconds.
4.5 CHANGE MASTER PASSWORD
DESCRIPTION
Enter the master password and confirm it by pressing
the "F" key. A beep will be heard every 2 seconds.
Press the "F " key again and keep it pressed for more than
5 seconds until you hear a double beep every 2 seconds
that invites you to enter the new master password.
Once you have entered the new master password (8
digits long), you will need to confirm it by pressing the
key
, a short confirmation beep will be heard and the
illumination will dim after 5 seconds.
NOTES: Once you begin the process of changing your master password, you have 10 seconds to
start entering your new password.
4.6 ENTERING A NEW USER PASSWORD AND ASSIGNING THE
SERVICE
DESCRIPTION
Enter the master password and confirm it by pressing the
"F" key. You will hear a beep every 2 seconds inviting you
to enter service1 ► START, 2 ► EXTERNAL RADAR, 3
► RADAR . Confirm it by pressing the key
, that the password or command entered
EXAMPLE
BLUE
1s +
1s
EXAMPLE
12345678
>2s
00000000
EXAMPLE
12345678
2
BEEP
<0.5s
<0.5s +
<0.5s
>1s +
>1s
BEEP
>1s
>1s +
>1s
BEEP
+ 2s +
+ 2s
+2s +
+2s
>0.5s
BEEP
+ 2s +
+ 2s
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