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4.0 INSTALLATION
Once the Model 2120 is configured, it is ready to connect to the serial
interface of the RS-232 device, to the Ethernet interface, and to the
power source. The Model 2120 is designed to connect an asynchronous
RS-232 device to other devices via the LAN/10Base-T interface. This
section describes how to install the 2120.
4.1 MODEL 2120 CONNECTION
The Model 2120 features DB-25 (Male or Female), DB-9 (Male or
Female), and RJ-45 serial interface connectors and a standard RJ-45
Female Ethernet interface connector. With the DB-25 connector and
connector screws, the 2120 conveniently attaches and secures to the
serial port of the RS-232 device. The DB-9 version features an RJ-45
Female connector and 6" adapter cable with DB-9 (M or F) connector on
the serial side, which allows the 2120 to conveniently attach to the DB-9
serial port of the RS-232 device and can be mounted/secured on or near
the RS-232 device. The RJ-45 connector on the serial side allows for a
convenient connection with a patch cable (not provided with 2120) to RS-
232 control ports and other devices with RJ-45 serial ports. The 2120
connects to any standard LAN connection (usually an RJ-45F connector)
using a standard LAN patch cord (not provided with 2120).
In Figure 10, the Model 2120 is attached directly to a card reader and will
use its individually assigned IP address so that the host PC can commu-
nicate with the card reader over the Ethernet LAN. Using a communica-
tions protocol such as Telnet or Raw-TCP, the host PC will poll and
monitor the card reader for various types of data.
Figure 10. A Typical RS-232 to 10BaseT Ethernet Installation
4.2 AC POWER CONNECTION
The Model 2120 is offered with either an AC or DC power supply. This
section briefly describes the power supplies and connections to the
Model 2120 and the power source. The Model 2120 is powered-up as
soon as it is plugged into an AC outlet (there is no power switch). The
2120 features an LED indicator for Power and when lit, the 2120 is
receiving power from the power supply.