Setting the Communication Parameters
LI-840A communication parameters are set automatically when the program is run.
Cabling
The serial cable (null modem) included has 9-pin connectors on both ends; either end plugs
into the 9-pin connector (Serial I/O) on the front panel of the LI-840A. Use this cable to inter-
face with your computer's 9-pin serial port. If you want to interface to a computer with a 25-pin
serial port, a 9-pin to 25-pin adapter must be used. To connect to a computer with a USB port, a
9-pin serial to USB adapter must be used.
RS-232 Output
Data from the LI-840A can be transferred to a computer for analysis, printing or storage using
the RS-232 interface. The LI-840A RS-232 port is configured as Data Terminal Equipment (DTE)
with no hardware handshaking, and is bi-directional, meaning information can be transferred
both into and out of the LI-840A.
The application software that comes with the LI-840A is used to view data and configure the LI-
840A from a PC.
Section 3
3-2 Section 3. Operation
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