SME SOURce:ILS
1038.6002.02 3.69 E-133
[:SOURce]:ILS:STATe ON | OFF
The command switches the generation of ILS signals on or off. STATe ON is only possible if no
amplitude modulation is switched on. Modulation generator 2 must not be switched simultaneously
as a source for PM or FM either.
Example: :SOUR:ILS:STAT ON *RST value is OFF
[:SOURce]:ILS:SOURce INT2 | INT2, EXT
This command determines the signal sources of the test signal.
INT2 The test signal used for ILS is generated internally by LF generator 2.
INT2 , EXT A signal from input EXT1 is added to the internal signal in addition. Switching off the
internal source is not possible.
Example: :SOUR:ILS:SOUR INT2 *RST value is INT2
[:SOURce]:ILS:TYPE GS|GSLope | LOCalizer
The command switches over between the two components of the ILS method. The configuration
of the signals is effected under the respective node GSLope or LOCalizer.
GD|GSLope Vertical component (Glide S
lope)
LOCalizer Horizontal component (LOCalizer)
Example: :SOUR:ILS:TYPE GS *RST value is GS
[:SOURce]:ILS[:GS|GSLope]
The commands to specify the characteristics of the glide slope signal are under this node.
Whether this signal is output, however, is determined by command SOURce:ILS:TYPE.
[:SOURce]:ILS[:GS|GSLope]:MODE NORM | ULOBe | LLOBe
The command specifies the type of the ILS-GS signal generated.
NORM ILS-GS signal
ULOBe (Upper LOB
e) Amplitude modulation of the output signal using the
SOURce:ILS:GS:ULOBe:FREQuency signal component (generally 90 Hz) of the
ILS-GS signal.
The modulation depth for SOURce:ILS:GS:DDM :DIR DOWN results from
AM(90Hz) = 0.5 * (ILS:GS:SODepth + ILS:GS:DDM * 100%)
and for SOURce:ILS:GS:DDM:DIR UP from
AM(90Hz) = 0.5 * (ILS:GS:SODepth ILS:GS:DDM * 100%)
LLOBe (Lower LOB
e) Amplitude modulation of the output signal using the
SOURce:ILS:GS:LLOBe:FREQuency signal component (generally 150 Hz) of the
ILS-GS signal. The modulation depth for SOURce:ILS:GS:DDM :DIR DOWN
results from
AM(150Hz) = 0.5 * (ILS:GS:SODepth + ILS:GS:DDM * 100%)
and for SOURce:ILS:GS:DDM:DIR UP from
AM(150Hz) = 0.5 * (ILS:GS:SODepth ILS:GS:DDM * 100%)
Example: :SOUR:ILS:GS:MODE ULOB *RST value is NORM
[:SOURce]:ILS[:GS|GSLope]:COMid
The commands to set the ComId content (communication/identification signal) of the ILS-GS
signal are under this node.
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