Rohde & Schwarz SME02 - Page 288

SOURce:ILS SME
1038.6002.02 3.72 E-13
[:SOURce]:ILS:LOCalizer
The commands to specify the characteristics of the LOCalizerlocalizer modulation signal are
under this node. Whether this signal is output, however, is determined by command
SOURce:ILS:TYPE.
[:SOURce]:ILS:LOCalizer:MODE NORM | LLOBe | RLOBe
The command specifies the type of the ILS-LOC signal generated.
NORM ILS-LOC-Signal
LLOBe (Left LOB
e) Amplitude modulation of the output signal using the
SOURce:ILS:LOC:LLOBe:FREQuency signal component (generally 90 Hz) of the
ILS-LOC signal. The modulation depth
AM(90Hz) = 0.5 * (ILS:LOC:SODepth + ILS:LOC:DDM * 100%)
and for SOURce:ILS:GS:DDM:DIR LEFT from
AM(90Hz) = 0.5 * (ILS:LOC:SODepth ILS:LOC:DDM * 100%)
RLOBe RLOBe (Right LOB
e) Amplitude modulation of the output signal using the
SOURce:ILS:LOC:RLOBe:FREQ signal component
(generally 150 Hz) of the ILS-LOC signal. The modulation depth
for ILS:LOC:DDM:DIR RIGHt results from
AM(150Hz) = 0.5 * (ILS:LOC:SODepth + ILS:LOC:DDM * 100%)
and for ILS:LOC:DDM:DIR LEFT from
AM(150Hz) = 0.5 * (ILS:LOC:SODepth ILS:LOC:DDM * 100%)
Example: :SOUR:ILS:LOC:MODE LLOB *RST value is NORM
[:SOURce]:ILS:LOCalizer:COMid
The commands to set the ComId content (communication/identification signal) of the ILS-LOC
signal are under this node.
[:SOURce]:ILS:LOCalizer:COMid[:STATe] ON | OFF
The command activates or deactivates the ComId signal. *RST value is OFF
Example: :SOUR:ILS:LOC:COM:STAT ON
[:SOURce]:ILS:LOCalizer:COMid:FREQuency 0.1 to 20 000 Hz
The command sets the frequency of the ComId signal. *RST value is 1020 Hz
Example: :SOUR:ILS:LOC:COM:FREQ 1020
[:SOURce]:ILS:LOCalizer:COMid:DEPTh 0 to 100 PCT
The command sets the AM modulation depth of the ComId signal.
Example: :SOUR:ILS:LOC:COM:DEPT 10PCT *RST value is 10 PCT