R&S SMA100B - Amplitude Settings

Avionic standards
R&S
®
SMA100B
155User Manual 1178.3834.02 ─ 09
"150 Hz"
Amplitude modulation of the output signal with the right lobe (150 Hz)
signal component of the ILS localizer signal.
The modulation depth of the 150 Hz signal results from the settings of
parameters Sum of Depth and DDM Depth according to:
●
"Fly" = "Right"
AM (150 Hz) = 0.5 × (SDM + DDM × 100 %)
●
"Fly" = "Left"
AM (150 Hz) = 0.5 × (SDM - DDM × 100 %)
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:MODE on page 619
DDM polarity
Defines the polarity for DDM calculation (see "DDM Depth" on page 157).
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:DDM:POLarity on page 616
Left Frequency
Sets the modulation frequency of the antenna lobe arranged at the left viewed from the
air plane.
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:LLOBe[:FREQuency] on page 618
Right Frequency
Sets the modulation frequency of the antenna lobe arranged at the right viewed from
the air plane.
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:RLOBe[:FREQuency] on page 620
Left/Right Phase
Sets the phase between the modulation signals of the left and right antenna lobe. The
zero crossing of the right lobe (150 Hz) signal serves as a reference. The angle refers
to the period of the signal of the right antenna lobe.
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:PHASe on page 619
6.4.3.3 Amplitude settings
Access:
1. Select "ILS Component > Localizer", see Chapter 6.4.3, "ILS localizer settings",
on page 151.
ILS configuration and settings