User manual

RS-232 interface commands
:LOCal
:SYSTem:LOCal Take 2000 out of remote
Description Normally, the Model 2000 is in local during RS-232 communications. In
this state, front panel keys are operational. However, the user may wish
to lock out front keys during RS-232 communications (see :RWLock).
This action command isu sed to take the Model 2000 out of the remote
state and enables the operation of front panel keys. Note that this com
-
mand can only be sent over the RS-232 interface.
:REMote
:SYSTem:REMote Place the Model 2000 in remote
Description This action command is used to place the Model 2000 in the remote state.
In remote, the front panel keys will be locked out if local lockout is assert
-
ed (see :RWLock). Note that this command can only be sent over the RS-
232 interface.
:RWLock
:SYSTem:RWLock Disable front panel keys
Description This action command is used to disable front panel controls (local lockout)
during RS-232 operation.
Taking the instrument out of remote (see :LOCal) restores front panel
keys operation. Note that this command can only be sent over the RS-232
interface.
Line frequency query
:LFRequency?
:SYSTem:LFRequency? Query line frequency
Description This query returns the frequency of the power line from which the unit is
operating. The power line frequency is automatically sensed upon power-
up.
2000-900 (J - Aug 2010) BOOK.fm Page 67 Wednesday, October 12, 2011 12:29 PM