Appendix A SCPI Command Reference
AFANalyser subsystem
WCDMA Options Version 6.20
453
:AFANalyser:VRANge
:AFANalyser:MRANge
Syntax
:AFANalyser:VRANge <PredefExp>
Parameters
PredefExp is one of the following predefined expressions:
AUTO|V30|V3|MV300|MV30. Default is AUTO.
Description
This command sets the range of the expected input voltage on the Willtek 4400 “AF
in” connector.
AUTO means that the Willtek 4400 will take sample measurements first and then -
based on these measurement results – will decide automatically which setting to use.
V30 means that an input voltage of up to 30 volts (rms) is expected and that the res-
olution of the signal measured will be 100 mV.
V3 means that an input voltage of up to 3 volts (rms) is expected and that the reso-
lution of the signal measured will be 10 mV.
MV300 expects a maximum input voltage of 300 mV (rms) and delivers a resolution
of 1 mV, while
MV30 means that the maximum input voltage will be 30 mV (rms) and the resolution
will be 100 μV.
Notes
– The better the current input voltage corresponds to the range setting performed
with this command, the more precise the measurement results will be.
– Whenever fast availability of measurement results is an issue, AUTO ranging
should be avoided as it is time-consuming.
Query
The query form of this command returns the current setting. A query will return a
string, containing one of the predefined expressions as explained above.
Example
:AFANalyser:VRANge V30
:AFAN:VRAN? Value returned: "V30".
Syntax
:AFANalyser:MRANge <PredefExp>
Parameters
PredefExp is one of the following predefined expressions: AUTO|V1|MV100.
Default is AUTO.
Description
This command sets the range of the expected input voltage on the Willtek 4400 “AUX
4 (AUX in)” connector.
AUTO means that the Willtek 4400 will take sample measurements first and then –
based on these measurement results – will decide automatically which setting to use.
V1 means that an input voltage of up to 1 Volt (rms) is expected and that the resolu-
tion will be 1 mV.
MV100 expects a maximum input voltage of 100 mV (rms) and delivers a resolution
of 100 μV.
Notes
– The better the current input voltage corresponds to the range setting performed
with this command, the more precise the measurement results will be.
– Whenever fast availability of measurement results is an issue, AUTO ranging
should be avoided as it is time-consuming.
Query
The query form of this command returns the current setting. A query will return a
string, containing one of the predefined expressions as explained above.
Example
:AFANalyser:MRANge MV100
:AFAN:MRAN? Value returned: "MV100".
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