R&S PR100 User Manual
• Value Representation
This applies to all commands that return a value. This value must be
presented to the user with an adequate accuracy.
• Default Values
Each parameter that can be set or queried via SCPI has a default value
after applying the *RST command.
• Instrument States
The behaviour of a command may vary between instrument states
10.1 Error Situations
The common behaviour of the instrument in error situations is as shown in the
list below (unless other behaviour has been explicitly specified for a specific
command or query):
• Do a command or query in an instrument state in which the
command/query is not supported
The error -221 “Settings conflict” is returned
• Set a parameter to such a state that it conflicts with other parameters
The error -221 “Settings conflict” is returned. The device does not
adapt other parameters in order to try to resolve a settings conflict. The
new parameter setting is rejected and the device setup remains
unchanged.
• Query a measurement result that is not available
SCPI outputs NAN instead of a value acc. to SCPI standard Section
7.2.1. Note that NAN is output as 9.91E37, as is also described in
[SCPI] and [Orion SCPI].
Differences with EB200/EM050 Devices:
• A similar error situation may produce a different error code and
message on the Orion MR and on the EB200/EM050.
10.2 Ranging and Rounding
Each parameter of the device that takes a value has a maximum and a
minimum. In addition, each parameter has a resolution. The approach for
setting a value for a parameter is as follows:
• if the supplied value is beyond its maximum or below its minimum,
return error -222 “Data out of range” without changing the parameter.
The device does not adapt other parameters in order to try to resolve a
data out of range situation. The new parameter setting is rejected and
the device setup remains unchanged.
• round the supplied value to the device’s resolution. For specific
parameters (e.g. bandwidth), Orion can choose to round up or down
instead of rounding towards the closest value.
• if the supplied value results in an error situation, return an error
appropriate for that situation without changing the parameter.
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