SME SOURce:ILS
1038.6002.02 3.73 E-133
[:SOURce]:ILS:LOCalizer:DDM
(Difference in D
epth of Modulation) The commands to set the modulation depth difference
between the signal of the left lobe (90 Hz) and the right lobe (150 Hz) are under this node.
[:SOURce]:ILS:LOCalizer:DDM:CURRENT -387 to +387 uA
The command alternatively enters the DDM value as a current by means of the ILS indicating
instrument. This parameter is coupled with SOURce:ILS:LOC:DDM: DEPTh.
Example: :SOUR:ILS:LOC:DDM:CURR 0 *RST value is 0 A
[:SOURce]:ILS:LOCalizer:DDM[:DEPTh] -0.4 to +0.4
The command sets the difference of the modulation depth. This parameter is coupled with
SOURce:ILS:LOC:DDM:CURRent. The following is true:
for SOURce:ILS:LOC:DDM:DIRection RIGHt
ILS:LOC:DDM:DEPTh = (AM(90Hz) - AM(150Hz))/100%
and for SOURce:ILS:LOC:DDM:DIRection LEFT
ILS:LOC:DDM:DEPTh = (AM(150Hz) AM(90Hz))/100%
Example: :SOUR:ILS:LOC:DDM:DEPT 0 *RST value is 0
[:SOURce]:ILS:LOCalizer:DDM:DIRection LEFT | RIGHt
The command enters the DDM value in dB. This parameter is coupled with
SOURce:ILS:LOC:DDM :DEPTh.
LEFT The airplane is too much to the right, it must turn to the left.
RIGHtThe airplane is too much to the left, it must turn to the right.
Example: :SOUR:ILS:LOC:DDM:DIR LEFT *RST value is LEFT
[:SOURce]:ILS:LOCalizer:DDM:LOGarithmic -999.9 dB to +999.9 dB
The command enters the DDM value in dB. This parameter is coupled with
SOURce:ILS:LOC:DDM :DEPTh and :CURRent.
Example: :SOUR:ILS:LOC:DDM:LOG 0 *RST value is 0.0 dB
[:SOURce]:ILS:LOCalizer:LLOBe
The commands to configure the signals of the left ILS-LOC antenna lobe (Left LOB
e) are under
this node.
[:SOURce]:ILS:LOCalizer:LLOBe[:FREQuency] 60 to 120 Hz
The command sets the frequency. Normally, it is 90 Hz. This parameter is coupled with
SOURce:ILS:LOC:RLOBe:FREQuency. As the ratio of LLOBe:FREQuency and
RLOBe:FREQuency must always be 3/5, RLOBe: FREQuency is readjusted accordingly.
Example: :SOUR:ILS:LOC:LLOB:FREQ 90 *RST value is 90 Hz
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