1.
Download the USB driver installation package from our website or from the
CDrom.
2.
Double click on the self extracting installer. This normally requires using the
administrator
privileges in Vista and Windows 7
3.
The installer will decompress the files and prompt you through the steps to
install the driver files.
5.
A message should be displayed indicating the successful installation of the two
driver files.
RS-232
The rear panel 9 pin connector of the AI-5120 is configured as a DCE (Data
Communications Equipment) port. As the PC is normally configured as a DTE (Data
Terminal Equipment) port, a straight-though cable is required for the connection. Do not
use a cross-over cable between the AI-5120 and the PC serial port.
The AI-5120's RS-232 data transmissions are fixed at 8 data bits with 1 stop bit and no
parity. The baud rate is adjustable from a default (at power up) setting of 9600 bps to a
maximum of 115200 bps. If a break signal (at least 11 consecutive space bits) is detected
by the AI-5120, it resets its baud rate to 9600 bps. Only three signals are required for
communication. These are Tx Data, Rx Data, and Ground. The Request-to-Send (RTS)
and Clear-To-Send (CTS) signals have no effect on communication. On the AI-5120's 9
pin RS-232 connector, the Data-Terminal-Ready (DTR) pin is directly wired to the Data-
Set-Ready (DSR) pin. As such, if the PC asserts DTR, it can read back that DSR is
asserted as well.
AI-5120 User Guide
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