Pressure Systems, Inc. Model 9116 User’s Manual
Page 47
www.PressureSystems.com
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
).
