DH Instruments COMPASS FOR MOLBOX, User Manual

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COMPASS

for molbox™ User’s Manual
© 1998-2003 DH Instruments, Inc .
Page 122
Figure 69. [Options], [molbox] Tab
Table 42. [Options], [molbox] Tab Selections
FEATURE DESCRIPTION
Allow selection
of gases for
which the
molbloc is not
calibrated
(check box)
Though any molbox supported gas can always be selected on the molbox, the
molbloc may or may not have been calibrated with that gas. The molbox can
determine whether the molbloc has been calibrated with a gas or not.
By default this field is checked to allow a test to proceed with any molbox supported
gas regardless of whether the molbloc has been calibrated with that gas. When
this field is not checked, a warning message is generated when a gas with which
the molbloc was not specifically calibrated is selected.
Enable MFC
switchbox
(check box)
By default this field is checked to provide selections for the MFC switchbox when a
molbox1 that supports the switchbox is the flow reference in
[Run DUT] and
[Run Test] run modes. If the optional MFC switchbox was not purchased with the
molbox or will not be used, uncheck this function to avoid the extra prompts that
occur during test initialization.
Prompt for MFC-
CB channel
(check box)
Check this option when the channel used on an MFC-CB may differ from test to
test. A message displays during test initialization that allows the MFC-CB channel
to be selected for controlling or measuring an MFC. If an MFC-CB is not selected
for use in the
Hardware Configuration , this option is not ignored.
Do not check this option if you wish to use the active MFC-CB channel for
controlling and measuring MFCs.
Always use
molbox RFM
microrange
(check box)
This option is on by default to always activate the molbox RFM microrange (when
available) as part of the test initialization. This is typically the desired use of the
molbox RFM. Uncheck the field to use the current microrange state when using the
molbox RFM. See the molbox RFM Operation and Maintenance Manual for additional
information on the microrange.
Use active
molbox channel
by default
(check box)
Check this option to use the currently active molbox1-95 channel when initializing
the molbox. Checking this option speeds up the initialization time by preventing the
need to read both molbox channels. For example, if the molbox1-95 is setup to use
channel B,
COMPASS assumes channel B will be used for testing. This feature
has no function when a molbox1 or molbox RFM is used as the flow reference device.