DH Instruments COMPASS FOR MOLBOX, User Manual

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COMPASS

for molbox™ User’s Manual
Page 99
© 1998-2003 DH Instruments, Inc .
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10.1 OVERVIEW
COMPASS ’s System Configuration specifies the data acquisition and control hardware that COMPASS
uses to accomplish specific data acquisition and control tasks. The System Configuration is created
using
[Setup] , [System] to select Hardware Definitions for each specific task. Hardware Definitions are
created using [Setup] , [Hardware] . Hardware Definitions define each, individual hardware component
that is available to be included in the System Configuration. They include information to identify the
component and to allow
COMPASS to communicate with it. When COMPASS is in a run mode, for any
data acquisition or control task, it attempts to use the hardware specified in the System Configuration.
If
COMPASS cannot communicate with a hardware item, an error occurs. To correct this error the
Hardware Definition for that item must be adjusted or a different Hardware Definition must be selected to
include in the System Configuration.
The System Configuration/Hardware Definition approach allows all the hardware available to COMPASS
to be set up at one time (in an unlimited number of Hardware Definitions) and quickly swapped or
adjusted when needed (by changing the Hardware Definitions included in the System Configuration).
The only Hardware Definitions that need to be included in the System Configuration are those that are
actually needed to execute the run mode. If, for example, you do not need to make pressure and/or
temperature measurements, no Hardware Definitions need to be created for these items and they do
not need to be selected in the System Configuration. Only instruments specifically required by the
DUT and/or flow controller to run need to be set up.
See Section 10.3 for information on creating Hardware Definitions and Section 10.2 regarding setting up
the System Configuration.