DH Instruments COMPASS FOR MOLBOX, User Manual

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COMPASS

for molbox™ User’s Manual
© 1998-2003 DH Instruments, Inc .
Page 14
5.1.1.1 SET UP AN RS-232 DUT
Use [Setup] , [DUT] to create a new DUT Definition (see Section 8). If a DUT
with similar characteristics already exists, it is easier to copy and edit the existing
DUT than to start from scratch. Before attempting to set up the RS-232 DUT,
refer to the DUT documentation to determine the commands used to measure
and control flow as well as the RS-232 interface settings. The first step is to enter
all of the DUT header information and decide whether to make this an
<Individual DUT>
or a <DUT Profile> . If the DUT is unique, use the <Individual DUT> option to
avoid the need to enter the DUT serial number and identification before starting a
test (see Section 8.5.2). Next, enter the flow range information. In most cases,
if a DUT outputs directly in RS-232 or IEEE-488, it will output in flow units.
However, this is not the case in this example. Note that
<Flow Units> are
“sccm @ 0.00C” and <Output Units> are “%” (see Section 8.5.4).
Figure 1. Example 1, DUT Range Setup
Select RS-232 as the DUT <Output Type> on the [Read] tab and enter the RS-232
settings for this DUT: 9600,E,7,1 (see Section 8.5.8). Then click the <Edit> button
next to the <Read Commands> list to display the remote command setup form.
To create the control code (02H), press the <Insert Special Character> button.
Select Hex then scroll to character “02” and press the insert button. The cursor
will turn into a pencil. Go to the first
<Remote Command> entry field and click
the mouse in the left most position in the text display. A square or rectangle will
display where the mouse was clicked. Now enter the DUT flow command,
“01RFX” next to the control code. The DUT in this example outputs “N+24.55” as
24.55 %. So enter 1 in the
<Leading characters to strip> . Press <OK> to save
the command setup and return to the DUT Definition Editor.