
Quadrus EZ Reader User’s Manual A-11
Appendices
IB-151 Ethernet/USB Interface
USB (USB-B) and standard Ethernet (RJ-45) connections can be made through the
IB-151 interface which plugs directly into the host port of the Quadrus EZ. The IB-151 has
an second 25-pin port to pass through all but the RS-422/485 connections.
Important Notes
For ethernet connection, the IB-151 is recommended for the following reasons:
• Protection components are installed within the IB-151 to address ethernet susceptibility to line transients
and electrostatic discharge (ESD) that can cause communication dropouts and connection termination.
• The IB-150’s matching cable does not provide the proper matched impedance that the standard CAT 5
cable provides, thus allowing higher emission levels which exceed Class A CE limits and possible further
signal degradation.
USB Connector
(socket)
Host Connector
(plug)
IB-151
Quadrus EZ
Ethernet
(socket)
IB-151 USB
IB-151 Host
Pin USB Port
1+5VDC
2Data (–)
3 Data (+)
4GND
Pin Host Port
a
a. All other pins are as shown on
the reader port of the IB-150.
13 NC
14 NC
16 NC
19 NC
IB-151 Ethernet
Pin Ethernet Port
1 Ethernet TX (+)
2 Ethernet TX (–)
3 Ethernet RX (+)
4NC
5NC
6 Ethernet RX (–)
7NC
8NC
Category 5 cabling less
than 50 m in length is rec-
ommended
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