Appendix A SCPI Command Reference
AFGenerator subsystem
448 WCDMA Options Version 6.20
:AFGenerator:LEVel[:RELative]:AF
:AFGenerator:SINGle:FREQuency
Description
This command routes the signal of the AF generator.
AF means that the generator's signal will be available at the AF out connector,
located on the front panel of the Willtek 4400.
CODec means that the signal created by the AF generator will be transmitted over
the traffic channel (GSM and AMPS only).
Notes
– RF cannot be signal source and generator destination the same time. Please check
the current setting of the AFG:OUTP command before issuing the AFAN:INP
COD command and vice versa to avoid measurement conflicts.
– The codec is an option to the Willtek 4400. Please refer to section “Accessories
and options” on page 29 for details.
Query
The query form of this command returns the current setting. A query will return a
string, containing the short-form version of one of the predefined expressions
explained above.
Example
:AFGenerator:OUTPut CODec
:AFG:OUTP? Value returned: "COD".
Syntax
:AFGenerator:LEVel[:RELative]:AF <real1>
Parameters
real1 is a floating point real number. The minimum value for real1 is 0.000,
the maximum value is 4.000. The resolution for real1 is 0.001. The default
value for real1 is 0.000.
Description
This command sets the output voltage of the signals, available at the “AF out” con-
nector, located on the front panel of the Willtek 4400.
The value specified for real1 is the peak voltage of the AF signal.
Notes
– This command will only have an effect when AF has been selected as the output
with the AFG:OUTP command explained above.
– The maximum output voltage for sinusoidal signals is 4 V (rms) (that is equivalent
to 5.6 V peak).
Query
The query form of this command will return the current setting. The string delivered
back will contain one floating point real number.
Example
:AFGenerator:LEVel[:RELative]:AF 2.5
:AFG:LEV:AF? Value returned in this example: "2.5".
Syntax
:AFGenerator:SINGle:FREQuency <real1>
Parameters
real1 is a floating point real number. The minimum value for real1 is 20.0, the
maximum value is 20000.0. The minimum resolution for real1 is 0.1. The
default value for real1 is 1000.0.
Description
This command sets the frequency of the AF generator as long as it is run in single-
tone generation mode.
The physical dimension of real1 is Hertz.
Note: Please refer to the description of the :AFG:MODE command for further
details regarding the single-tone generation mode.
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