Agilent Technologies 54503A User's Guide Page 296

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296 Chapter5
Programming
Communication with the System
Local and Remote Control
Whenever the spectrum analyzer is remotely addressed, all front-panel
keys and softkeys are disabled, except for the one GPIB related softkey
RMT LCL. When the analyzer is remotely addressed, the remote mode
(RMT) is selected. Pressing RMT LCL until "LCL" is underlined
returns the analyzer to local mode, clears the softkey menu, and
reactivates front-panel operation. Executing the HP BASIC statement
LOCAL achieves the same result.
You can also use the HP BASIC LOCAL LOCKOUT command to
disable the spectrum analyzer keys. If you use LOCAL LOCKOUT, you
must either use the LOCAL command to reenable the spectrum
analyzer keys, or turn the spectrum analyzer off and then back on.
NOTE Local mode should not be activated, via the RMT LCL softkey, until
other processes are complete (for example, instrument preset, recall
state, fast Fourier transform, and so on). Using the LOCAL command
via GPIB may require the HP BASIC command WAIT to precede it.
Executing a WAIT statement before the LOCAL command ensures that
sufficient time has been allocated for full execution of other commands
before local mode is activated.
Program timing can be affected when using the LOCAL command at
the end of a command string or at the end of a program without
preceding it with a WAIT command. In this case, all commands in the
program cannot be executed, and errors that are generated cannot be
reported due to the fact that the analyzer has exited remote mode as
soon as the LOCAL command is received.
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