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Example For example, if the instrument address is 4 and the interface select code is 7,
the instruction will cause an action in the instrument at device address 704.
DEVICE ADDRESS = (Interface Select Code) X 100 + (Instrument
Address)
Local, Remote, and Local Lockout
The local, remote, and remote with local lockout modes may be used for
various degrees of front-panel control while a program is running. The logic
analyzer will accept and execute bus commands while in local mode, and the
front panel will also be entirely active. If the 1660-series logic analyzer is in
remote mode, the logic analyzer will go from remote to local with any front
panel activity. In remote with local lockout mode, all controls (except the
power switch) are entirely locked out. Local control can only be restored by
the controller.
Hint Cycling the power will also restore local control, but this will also reset
certain GPIB states. It also resets the logic analyzer to the power-on defaults
and purges any acquired data in the acquisition memory.
The instrument is placed in remote mode by setting the REN (Remote
Enable) bus control line true, and then addressing the instrument to listen.
The instrument can be placed in local lockout mode by sending the local
lockout (LLO) command (see SYSTem:LOCKout in chapter 9, "Mainframe
Commands"). The instrument can be returned to local mode by either
setting the REN line false, or sending the instrument the go to local (GTL)
command.
Programming Over GPIB
Local, Remote, and Local Lockout
2–5