Rohde & Schwarz XT 4410A - Inquiries and Commands

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Operator’s Manual • V.24 Remote Control (S400U Protocol)
6076.0822.12.02 – A2.3 –
$ ,QTXLU\
$ )RUPDWRI5HVSRQVHV
This format corresponds to that of the acknowledgements. Thus the same characters are con-
tained (E, U) in addition to the frame, the address and the information required. The waiting
period until the end of response depends on the kind of command and varies from approxi-
mately 100 ms up to 5 s.
$ ,QTXLU\RI&DUULHUDQG6TXHOFK
The control code for this inquiry is "N". This inquiry is recommended for general polling of
changes concerning the test message and the setting.
$ ,QTXLU\RI)UHTXHQF\RU&KDQQHO1XPEHU
The control code for this inquiry is "O2". Either the channel number or the frequency can be
inquired, but not the channel / frequency assignment. This inquiry is recommended in order to
trace the scanning.
$ ,QTXLU\RI(QWLUH6HWWLQJ
The control code for this inquiry is "O3". The following information is reported:
q Radio characteristics
q Frequency or channel
q Mode of operation
q Communication mode
q Class of emission
q Guard receiver on / off
q Power stage
q Squelch on / off
q Scanning mode (only if set)
This inquiry should be performed about 1 s after all setting commands in order to check if the
command was executed successfully.