User's Manual

Overview
3.2.1 RF Channels
The L-L100 Reader can drive up to two antennas with each channel able to drive up to four watts.
LEDs indicate which RF field (channel) is transmitting (green).
CAUTION: The antenna MUST be connected to the reader before the unit is turned on.
3.2.2 Synchronization Input/Output
When configured for input, this BNC connector makes it possible to use an external 27.12-MHz
clock to generate the RF field, instead of the internal clock generator.
When configured as output, this connector can drive other L-L100 readers and provide the
27.12-MHz clock.
The Sync LED indicates the clock mode:
• Red: The internal clock generator is enabled and an external clock signal cannot be input.
• Green: The internal clock generator is disabled. A 27.12-MHz clock signal must be
connected to the Sync In/Out connector.
By default, the internal clock mode is applied and the Sync In/Out connector is configured as an
output. If the external clock mode is required, contact your TAGSYS sales representative.
3.2.3 I/O Port Connector
The L-L100 reader provides four Input/Output (I/O) ports. Each I/O can be independently
configured as an input or output by the application software.
When configured as outputs, I/Os are open drain (250 mA). A pull-up supply must be connected to
the I/O port reference input (V
IN
). The pull-up supply voltage range is between 5V and 28V.
When configured as inputs, the I/O input signal range is between 0V and 28V.
I/O port LEDs indicate whether the I/O is configured for input (green) or output (red).
Please refer to Section 9, "I/O Ports" for more information.
Industrial I/O ports can only be accessed via the Data Processing Unit (DPU).
3.2.4 Init Button
The Init button aborts the embedded application stored in the Data Processing Unit memory. The
L-L100 Reader is then ready to be downloaded with a new application.
The L-L100 Reader must be switched off and then back on before an embedded application
takes effect.
April 2003 Revision 3.1b 15/45