Interface Commands; Line Frequency Query - Keithley 2010 User Manual

5-70 SCPI Command Reference
RS-232 interface commands
:LOCal
:SYSTem:LOCal
Description
:REMote
:SYSTem:REMote
Description
:RWLock
:SYSTem:RWLock
Description

Line frequency query

:LFRequency?
:SYSTem:LFRequency?
Description
Normally, the Model 2010 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 is used to take the Model 2010 out of the remote state
and enable the operation of front panel keys. Note that this command can
only be sent over the RS-232 interface.
This action command is used to place the Model 2010 in the remote state. In
remote, the front panel keys will be locked out if local lockout is asserted (see
:RWLock). Note that this command can only be sent over the RS-232
interface.
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.
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.
Take 2010 out of remote
Place the Model 2010 in remote
Disable front panel keys
Query line frequency