Measurement Specialties user manual Pressure Systems, Inc Model 9116 User’s Manual

Pressure Systems, Inc. Model 9116 User’s Manual

Special augments of this command, called sub-commands (distinguished by the first parameter ii) can configure each data stream with the particular channels whose data are delivered, the datum format, the delivery rate, and other characteristics. It can also start, stop, or undefine a single stream or all defined streams.

The maximum rate of any one stream’s delivery is practically limited to the maximum possible scan and data conversion rate of all the module’s channels. Normally, these programmable host streams deliver host data at rates equal to or slower than this natural cycle. For a typical application, the first stream delivers a few channels at a high rate as defined by a hardware trigger. The second stream delivers other channels at a medium rate (some multiple of the trigger), and the third stream can deliver still other channels at a slow rate (a larger multiple of the trigger). In another application, the three streams might all be programmed to deliver all the same channels, but the first stream might deliver pressure data (EU only) at high speed. The second stream might deliver pressure counts or volts at a slower rate, and the third stream might deliver temperature in all forms (EU, counts, volts) at a very slow rate.

Note

Avoid confusing this Configure/Control Autonomous Host Streams command ‘c’ (lower case c) with the Configure/Control Multi-Point Calibration command ‘C’ (upper case C). Like ‘C’, but unlike most other module commands, all sub-commands of this command require a space between the command id (‘c’) and the first parameter (ii).

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