SME Analog Modulations
1038.6002.02 2.75 E-13
CARRIER FREQ KNOB STEP
Selection of the variation of the carrier frequency via the rotary knob.
The selection is effective on both ILS modulations.
DECIMAL Decimal variation according to the current cursor
position.
DEFINED Decimal variation according to the current cursor
position.
Note: If DEFINED is selected, the current RF frequency is
automatically switched over to the next LOCALIZER
transmitter frequency according to the table when switching
on the modulation.
EXT AM [SENS. 1 V/100%]
Switching on/off an external modulation signal via socket EXT1.
OFF External AM input EXT1 switched off.
ON External AM input EXT1 activated.
The sensitivity is 10 mV per percent modulation depth.
IEC-bus command SOUR:ILS:SOUR INT2, EXT
Note: As automatic level monitoring of the external modulation
signal is switched off in this operating mode, there can be an
overmodulation as a function of the level of the external
signal without a corresponding caution message being
generated.
In order to avoid an overmodulation, the peak value of the
external signal is to be delimited corresponding to the sum of
the modulation depths of the remaining ILS signal
components.
To Next Page
Loading...
