3. Program control commands
3.3 Instrument Subsystem Command
114
[:SOURce]:RADio:CUSTom:ALPHa <FilterAlpha>
Function description:
This command is used to set the alpha value of Nyquist filter, Root
Nyquist filter and Gaussian filter. If the user changes the value, it will
affect the bandwidth occupied by the radio signal spectrum. Please refer
to the command
―:RADio:CUSTom:FILTer‖
for change of filter type.
Setting format:
[:SOURce]:RADio:CUSTom:ALPHa <val>.
Query format:
[:SOURce]:RADio:CUSTom:ALPHa?
Parameter description:
<FilterAlpha>
filter factor.
Range: 0.350 [0, 1.000].
Example:
RADio:CUSTom:ALPHa 0.350 set the filter factor to 0.35.
Reset state:
0.350
Key path:
[Base]
—> [Filter] —> [Filter Factor a]
[:SOURce]:RADio:CUSTom:DATA <Mode>
Function description:
This command is used to set the data source of radio modulation signal
for the signal generator. Users may select such 15 data sources as PN9,
PN11, PN15, PN16, PN20, PN21, PN23, FIX4, P4, P8, P16, P32, P64,
PRAM and EXT (not currently supported).
Setting format:
[:SOURce]:RADio:CUSTom:DATA PN9|PN11|PN15
|PN16|PN20|PN21|PN23|FIX4|P4|P8|P16|P32|P64PRAM
Query format:
[:SOURce]:RADio:CUSTom:DATA?
Parameter description:
<Mode>
Discrete data. Please refer to the setting command format for data
source type of radio modulation signal.
Example:
RADio:CUSTom:DATA FIX4
Fixed 4-bit code is selected as radio data source.
Reset state:
PN9
Key path:
[Base]
—
> [Base Config]
—> [Data Source Selection]
Remarks:
EXT is not currently supported.
[:SOURce]:RADio:CUSTom:DATA:PARM <S>
Function description:
When file stream is selected as the data source in the real-time radio of
the signal generator, this command is used to select the stream file that
must be saved in D:\1435data\user\DataSrc with the extension of ".src".
This command is for setting only.
Setting format:
[:SOURce]:RADio:CUSTom:DATA
Parameter description:
<S >
the name of file stream selected contains the extension.
Example:
RADio:CUSTom:DATA:PRAM ―Test.src‖
Select stream file ―Test.src‖.
Key path:
[Base]
—
> [Base Config]
—> [Data Source: file] —> [Select File]