Subsystems
There are 23 subsystems in this instrument. In the command tree (figure
4-1) they are shown as branches, with the node above showing the name of
the subsystem. Only one subsystem may be selected at a time. At power on,
the command parser is set to the root of the command tree; therefore, no
subsystem is selected. The 23 subsystems in the 1660-series logic analyzers
are:
•SYSTem - controls some basic functions of the instrument.
•MMEMory - provides access to the internal disk drive.
•INTermodule - provides access to the Intermodule bus (IMB).
•MACHine - provides access to analyzer functions and subsystems.
•WLISt - allows access to the mixed (timing/state) functions.
•SFORmat - allows access to the state format functions.
•STRigger - allows access to the state trigger functions.
•SLISt - allows access to the state listing functions.
•SWAVeform - allows access to the state waveforms functions.
•SCHart - allows access to the state chart functions.
•COMPare - allows access to the compare functions.
•TFORmat - allows access to the timing format functions.
•TTRigger - allows access to the timing trigger functions.
•TWAVeform - allows access to the timing waveforms functions.
•TLISt - allows access to the timing listing functions.
•SYMBol - allows access to the symbol specification functions.
•ACQuire - sets up acquisition conditions for the digitize function.
•CHANnel - controls the oscilloscope channel display and vertical axis.
•DISPlay - allows data to be displayed.
•MARKer - allows access to the oscilloscope’s time and voltage markers.
•MEASure - allows automatic parametric measurements.
•TIMebase - controls the oscilloscope timebase and horizontal axis.
Programming and Documentation Conventions
Subsystems
4–15