Analog Modulations SME
1038.6002.02 2.74 E-13
LEFT FREQUENCY
Input value of the modulation frequency of the antenna lobe arranged
at the left viewed from the plane.
IEC-bus command SOUR:ILS:LOC:LLOB 90
RIGHT FREQUENCY
Input value of the modulation frequency of the antenna lobe arranged
at the right viewed from the plane.
IEC-bus command SOUR:ILS:LOC:RLOB 150
Note: A variation of one of the two modulation frequencies causes
an automatic adaptation of the other modulation frequency in
such a way that a frequency-response ratio of 3:5 or 5:3 is
maintained.
LEFT/RIGHT PHASE
Input value of the phase between the modulation signals of the
left-hand and right-hand antenna lobe. The zero point of the 150-Hz
signal serves as a reference.
The input is effected in degrees of the 150-Hz signal.
IEC-bus command SOUR:ILS:LOC:PHAS 0deg
ILS DEFAULT SETTING
Calling the ILS-LOC default setting.
The default setting corresponds to the setting represented in Fig.
2-35 except for the MODE setting (=NORM). The selection of the
CARRIER FREQ KNOB STEP parameter is not changed by calling
this function.
IEC-bus command SOUR:ILS:LOC:PRES
COM/ID STATE
Switching on/off an additional communication/identification signal
(COM/ID signal).
IEC-bus command SOUR:ILS:LOC:COM ON
COM/ID FREQUENCY
Switching on/off an additional communication/identification signal
(COM/ID signal).
IEC-bus command SOUR:ILS:LOC:COM:FREQ 1020
COM/ID DEPTH
Input value of the AM modulation depth of the COM/ID signal.
IEC-bus command SOUR:ILS:LOC:COM:DEPT 10PCT
DDM KNOB STEP
Selection of the variation of the DDM value via the rotary knob.
DECIMAL Decimal variation according to the current cursor
position.
DEFINED Variation between the predefined DDM values:
-0,2000,
-0.1550 (Course Sector)
-0,0930, -0,0460
0,0000 (Course Line)
+0,0460, +0,0930
+0,1550 (Course Sector)
+0,2000
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