DH Instruments COMPASS FOR MOLBOX, User Manual

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COMPASS

for molbox™ User’s Manual
© 1998-2003 DH Instruments, Inc .
Page 8
running a test for the first time. Subsequent tests will only require a selection of the desired
DUT and Test Definitions. The
[Run Test] section of this manual has a more detailed
explanation of the requirements to run a test in COMPASS (see Section 7.2). Several COMPASS
examples and frequently asked questions are in the Quick Tips section of this manual
(see Sections 4, 5). These sections are also very useful in getting started.
When first running COMPASS, make the minimum number of changes and modifications until
you are familiar with the program. The default values in all setup screens are designed for the
most common COMPASS uses. This will help to avoid confusion and setup conflicts as you
develop experience in using COMPASS.
Select [Setup] , [DUT] to create a DUT Definition (see Section 8.2). A DUT that outputs
an electrical signal such as V, mV or mA will most likely be read using a digital multimeter
(DMM) or the molbox analog option. The DMM must be set up in the Hardware Definition
before it will be available in the System Configuration (see Section 10.3.4). The
molbox
analog option does not require any additional setup. Whenever the flow reference is a
molbox1, the analog option is automatically available in the System Configuration.
Select [Setup] , [Test] to create a test script that describes flow points and other aspects
of the testing procedure (see Section 9).
Select [Setup] , [Hardware] to update the Hardware Definition of specific components
available for use by COMPASS (see Section 10.3). This includes setting up the molbox
remote interface as well as any other peripheral devices needed to run the DUT.
This option should be used to set up a DMM, power supply, pressure device, temperature
device and any flow controllers that may be used to control the flow of non-flow
controlling DUT’s. Once these entries are made, there is no need to access the
Hardware Definition unless a change in one of these devices occurs.
Select [Setup] , [System] to set up the System Configuration of specific instruments that
will be used by COMPASS to measure reference flow, pressure, temperature, analog
output and provide analog power (Section 10.2). Not all selections are mandatory.
Only hardware specifically needed to run the test must be selected at any one time.
Select [Run] , [Run Test] .