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Testing Manual for
RS-232 to RS-422/RS-485 Converter
(ML LD-15 U)
For testing RS-232 to RS-485 Converter, one should follow the following
steps:
1. Check the physical condition of the unit.
2. Plug-in the Converter in the power socket to check the power on the
unit.
3. Attach the input cable, which comes with the Converter to get the
input of RS-232 signal from the computer.
4. Prepare the Loop-back dongle and attach it on the output (RS-
422/485) Port. To prepare this dongle, you need to short pin no. “
3 & 6
”
and
“4 & 5”
of a 9 pin Female connector at the soldering side. Connect
it on the Output port Do not connect any other pin.
5. Start the Hyper Terminal Software for testing the converter. Go to “
Start
-> Programs -> Accessories -> Communications -> Hyper Terminal”
.
