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Instrument Overview Instrument Operation
MS278XB OM 3-37
3-4 Instrument Operation
Changing Setups
When a parameter is changed via the front panel, or a message is received containing new setup information,
the system validates the requested change, and then goes into the “setup” state while the new setup
information is assimilated. When the new setup information is processed, the system returns to the measure
state. You may observe a momentary delay during this process, which is normal.
Calibration State
The system enters a calibration state when you request it or when the system determines that calibration is
necessary. In this calibration state, the analog receiver and LO hardware is calibrated and the results saved
for use in measurement corrections. Upon completion, the system returns to the measure state.
Instrument Preset
The instrument can be set to a known state by pressing the Preset key, or the Preset menu item on the Front
Panel drop-down menu, or by a command via the remote programming interface (GPIB or LAN). When
initiating a preset, the instrument goes through a sequence similar to startup by loading the default
measurement parameters to the hardware.