Fluke PM6685R, PM6681R manual Other Subsystems, Order of Execution

Instrument Model

Other Subsystems

In addition to the major functions (sub- systems), there are several other subsys- tems in the instrument model.

The different blocks have the following functions.

￿CALibration

This subsystem controls the calibration of the interpolators used to increase the res- olution of the CNT-8X counters.

￿DISPlay

Commands in this subsystem control what data is to be present on the display and whether the display is on or off.

￿FORMat

The FORMat block converts the internal data representation to the data transferred over the external GPIB interface. Com- mands in this block control the data type to be sent over the external interface.

￿MEMory

The MEMory block holds macro and in- strument state data inside the counter.

￿OUTPut

This subsystem controls the analog out- put available in the CNT-8X counters.

￿STATus

This subsystem can be used to get infor- mation about what is happening in the in- strument at the moment.

￿Synchronization

This subsystem can be used to synchro- nize the measurements with the control- ler.

￿SYSTem

This subsystem controls some system pa- rameters like timeout.

￿TEST

This subsystem tests the hardware and software of the counter and reports errors.

￿TRIGger

The trigger block provides the counter with synchronization capability with ex- ternal events. Commands in this block control the trigger and arming functions of the Timer/ Counter.

Order of Execution

–All commands in CNT-8X counters are se- quential, i.e., they are executed in the same order as they are received.

–If a new measurement command is re- ceived when a measurement is already in progress, the measurement in progress will

be aborted unless WAI is used before the command. :

5-4 Other Subsystems