Rohde & Schwarz SME02 - Page 287

SME SOURce:ILS
1038.6002.02 3.71 E-133
[:SOURce]:ILS[:GS|GSLope]:LLOBe
The commands to configure the signal of the lower ILS-GS antenna lobe are under this node
(Lower LOB
e).
[:SOURce]:ILS[:GS|GSLope]:LLOBe[:FREQuency] 100 to 200 Hz
The command sets the frequency. Normally, it is 150 Hz. This parameter is coupled with
SOURce:ILS:GS:ULOBe:FREQuency. As the ratio of ULOBe:FREQuency and
LLOBe:FREQuency must always be 3/5, ULOBe:FREQuency is readjusted accordingly.
Example: :SOUR:ILS:GS:LLOB:FREQ 150 *RST value is 150 Hz
[:SOURce]:ILS[:GS|GSLope]:ULOBe
The commands to configure the signal of the upper ILS-GS antenna lobe (Upper LOB
e) are under
this node.
[:SOURce]:ILS[:GS|GSLope]:ULOBe[:FREQuency] 60 to 120 Hz
The command sets the frequency. Normally, it is 90 Hz. This parameter is coupled with
SOURce:ILS:GS:LLOBe:FREQuency. As the ratio of ULOBe:FREQuency and
LLOBe:FREQuency must always be 3/5, LLOBe: FREQuency is readjusted accordingly.
Example: :SOUR:ILS:GS:ULOB:FREQ 90 *RST value is 90 Hz
[:SOURce]:ILS[:GS|GSLOpe]:PHASe 0 to 120 deg
The command sets the phase between the modulation signals of the upper and the lower antenna
lobe. The zero crossing of the signal of the lower lobe serves as a reference. The angle is related
to the period of the signal of the lower antenna lobe. *RST value is 0
Example: :SOUR:ILS:GS:PHAS 0deg
[:SOURce]:ILS[:GS|GSLope]:SODepth 0 to 100 PCT
The command indicates the sum of the modulation depths of the signals of the lower lobe (90 Hz)
and the upper lobe (150 Hz). *RST value is 80PCT
Example: :SOUR:ILS:GS:SOB 80PCT
[:SOURce]:ILS[:GS|GSLOpe:PRESet
This command is equivalent to the following GS defaultcommand sequence:
:ILS:STAT ON
:ILS:TYPE GS
:ILS:SOUR INT2
:ILS:GS:MODE NORM
:ILS:GS:COM OFF
:ILS:GS:COM:FREQ 1020Hz
:ILS:GS:COM:DEPT 10PCT
:ILS:GS:DDM 0.0
:ILS:GS:DDM:DIR UP
:ILS:GS:SOD 80PCT
:ILS:GS:ULOB 90Hz
:ILS:GS:LLOB 150Hz
:ILS:GS:PHAS 0
The values set correspond to the state after SYSTem:PRESet or *RST. The command neither
has a query form nor an *RST value.
Example: :SOUR:ILS:GS:PRES