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GS mode with the NR 3320 - ( )
1. Set the frequency of the localizer.
2. Switch on the VOR/LOC identification (press the
IDT
key, ON ap-
pears briefly in the display). Monitor the Morse identification signal
and compare it with the identification signal of the wanted locali-
zer.
3. If a glidepath signal of sufficient strength is present, the GS war-
ning flag disappears from the field of view.
4. The GS needle (horizontal command needle) deflects during the
approach in the direction in which the flight level has to be correc-
ted in order to obtain the specified glidepath. A mid position of the
needle means that the aircraft is on the glidepath.
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Operation of the various modes
The navigation receiver contains various functions which are performed
under three modes. The individual modes are selected by pressing the
MDE
key.
Frequency setting mode
Display of the active frequency in the left indication. The right
indication is switched off. The active frequency can be directly
changed using the frequency selector switches. Frequencies
can also be stored in the individual storage channels.
Frequency preselection mode
Display of the active and preset frequency. The preset frequency
can be set using the frequency change switches. Pressing the
exchange key changes over from the active to the preset fre-
quency. Frequencies can also be stored in the individual storage
channels.
BECKER NR 3320 - ( ) / NR 3330 - ( )
Page 18
Issue 12/97
OPERATING INSTRUCTIONS
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Operating instructions NAV receiver
Preparation
Switch on the aircraft power supply (check that the circuit breaker for the
navigation receiver is set).
Do not switch on the navigation receiver if engines or motors
are being started up or shut down.
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Switching on the navigation receiver
1. Rotate the volume control clockwise and switch on the navigation
receiver.
2. Both LCDs must show the numbers 188.88 flashing approximately
2 seconds. If the test is positive, the navigation receiver automati-
cally switches to the mode which was selected before switch-off. If
the test is negative, the LCD flashes for approximately 5 seconds.
In all modes, disturbances of the navigation system are displayed
in the form of fault messages.
l
E2 synthesizer failed,
l
E3 EEPROM fault
4. A comprehensive description of the various modes follows the ge-
neral operating instructions.
Operating Instructions
Issue 12/97
Page 15
WARNING
