Rohde & Schwarz SME02 - ILS-Localizer Modulation (ILS-LOC)

Analog Modulations SME
1038.6002.02 2.72 E-13
2.6.2.7.3 ILS-Localizer Modulation (ILS-LOC)
Notes: - The following modulations cannot be set simultaneously and deactivate one another:
ILS-LOC and AM
ILS-LOC and PM if SOURCE PM = LFGEN2
ILS-LOC and FM if SOURCE FM = LFGEN2
- In the AM, FM, PM and LF-output menu the note "ILS-LOC" is displayed under LFGEN2
if the ILS-LOC modulation is activated.
- With setting CARRIER FREQ KNOB STEP= DEFINED, a change to modulation
ILS-GS automatically causes the RF frequency to be adapted to the glide-slope value
which is coupled to the localizer setting
.
Menu selection: MODULATION ILS - LOC
FREQUENCY
LEVEL
MODULATION
DIGITAL MOD
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
HELP
AM
FM
PM
PULSE
STEREO
VOR
ILS-GS
ILS-LOC
MKR-BCN
FREQ
108. 100 000 0
MHz
LEVEL
- 47.0
dBm
MODE OFF NORM 90Hz 150Hz
DDM 0.000 0
DDM 0.000 µA
DDM 0.0 dB
FLY LEFT RIGHT
SUM OF DEPTH 40.0 %
FREQUENCY 90.0 Hz
LEFT FREQUENCY 150.0 Hz
LEFT/RIGHT PHASE 0.0 deg
ILS DEFAULT SETTING
COM/ID STATE OFF ON
COM/ID FREQUENCY 1.020 kHz
COM/ID DEPTH 10.0 %
DDM KNOB STEP DECIMAL DEFINED
CARRIER FREQ KNOB STEP DECIMAL DEFINED
EXT AM [SENS. 1V/100%] OFF EXT1
Fig. 2-35 Menu MODULATION-ILS-LOC (preset setting), fitted with option SM-B6, multifunction
generator
MODE
Selection of the ILS-LOC operating mode.
OFF ILS-LOC modulation is switched off.
In menus AM, FM, PM and LF-OUTPUT the original setting
is displayed under LFGEN2, the note "ILS-LOC" is
eliminated.
NORM ILS-LOC modulation is activated.
90 Hz Amplitude modulation of the output signal with the 90-Hz
signal content of the ILS-LOC signal. The modulation depth
of the 90-Hz signal is calculated from the settings of
parameters SUM OF DEPTH (SOD) and DDM according
to:
AM (90 Hz) = 0,5 × (SOD + DDM × 100%)