Rohde & Schwarz R&S UPP, User Manual

Page: 675 / 938

Remote Control - Fundamentals
R&S
®
UPP
659 User Manual 1411.1055.32 ─ 10
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To be able to preset individual parameters of functions that are not yet active, each
IEC/IEEE bus command would have to be told to which instrument and which func-
tion it refers. The internally managed addressing of commands by the R&S
UPP
would then be the job of the IEC/IEEE bus programmer, who would have to handle
a multiple number of commands.
A major feature in operation of the R&S UPP is its ability to note the settings for individ-
ual generator and analyzer functions and to restore all required parameters when one
of these functions is selected. This does away with the need to reset all parameters
when a function is changed.
Example:
●
The generator function "Mod Dist" is set with frequencies of 400 Hz and 7 kHz.
When you switch to the DFD function, the frequency pair 11 kHz and 12 kHz last
used with the DFD function is automatically restored.
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This functionality is also available under IEC/IEE bus control, i.e. even in remote
control all parameters are automatically set when the function is changed. This is
much faster and surer than the user having to set the parameters each time on the
IEC/IEEE bus.
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If the R&S UPP did not have this ability, the user could overwrite parameters for
instruments that are not active, and the parameters of the function last used would
no longer be available.
Since manual and remote control work with the same internal data sets and a mixture
of manual and remote control must be possible, only one uniform method of internal
parameter processing can be used for the two modes. Automatic parameter restoration
is indispensable for manual control, so it must also be used for remote control.
To relieve the user of the need to watch out for relationships that are in part not appa-
rent, the following applies to both remote control and manual control of the R&S
UPP:
Nothing can be set on the R&S UPP that is not admissible.
The disadvantage of this is that sometimes a certain operating sequence has to be
adhered to even in remote control. But this is more than compensated by the fact that
possible setting errors are immediately indicated by the instrument.
6.6.5 Status Reporting System
The status reporting system collects information about the device status and makes it
available to the output unit on request. The structure and function are explained in sec-
tion
Chapter 6.8, "Status Reporting System" , on page 663.
Device Model and Command Processing