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NOTE. Remember to return these switches to the "On" position when
setup or calibration is complete, or the ADFM Analog Output Module will
not function as intended.
E-3.1
Standard DGH Module Setup
All DGH modules used in the ADFM Analog Output Module should be
configured for operation at 2400 baud using channel address "1". If the
DGH module does not respond at those settings, the factory default setting
of 300 baud should be tried. Contact MGD Technologies Inc. or refer to the
D3000/D4000 Users Manual if communications with the module cannot be
established at either setting. The basic setup procedure is as follows:
a. Start the DGH software, check the "Host, RS-232 Port" settings.
NOTE: Some laptop computers must be restarted in MS-DOS mode
to use the DGH software.
b. Connect the computer to the appropriate DB-9 connector.
c. Select "Setup" from the menu, enter the channel address and model
number.
d. If communication with the module is successfully established, the
current module settings will appear in the setup window. If commu-
nication with the module is NOT successfully established, a com-
munications timeout error message will appear, followed by the
same setup window. NOTE: You will not be able to successfully
change the setup of the DGH module until you have successfully es-
tablished communications with the DGH module.
e. Enter revised parameters in the setup window as desired. Limit
checking will typically be turned on, and high and low limits will
typically be set to 21.00 and 3.50 ma, respectively. NOTE: Use cau-
tion to avoid changing the DGH module address and baud rate unin-
tentionally, as inadvertent changes to these parameters will make it
impossible to communicate with the module using normal proce-
dures.
f. When finished entering revised parameters in the setup window,
program the module with the revised settings using the <F10> key.
When the revised settings have been saved to the module, a prompt
will appear asking if the module should be reset. NOTE: The re-
vised settings will not actually take effect until the module is reset,
either via this software command or by temporarily removing power
to the module.
g. Test the revised settings using the "Misc, Terminal Simulator" menu
option. Ensure that the baud rate setting for the terminal simulator
matches the baud rate programmed into the DGH module. A typical
ADFM Technical Manual (January 2000)
ADFM Analog Output Module
page E-7
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