User Manual

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Document #7201-001, Rev C Page 10

In the diagram above, the relative range is displayed as a function of the cable length.

Relative because the range is dependent on the environment of the system. Under ideal

conditions (free field, high-sensitivity tags, high-sensitivity i-PORT, maximum output

power), ranges of up to 100 meters can be achieved. But if 20 meters of antenna cabling

are used, the cable losses amount to approximately 12 dB, which reduces the original

range to just one-quarter (25 meters)!

The range losses as displayed in the diagram are independent of the original range. If the

range is 30 meters (free field, low-sensitivity tags, low-sensitivity i-PORT, maximum

output power) and 10 meters of antenna cabling are used, the range is reduced by 50%.

After mounting the i-PORT, the antennas need to be installed and connected to the

designated antenna sockets. If antenna extension cables are required, check these for

function or short circuits before you begin with the start-up.

Alignment of Antennas:

Align the antennas with the tags or the objects to be monitored. Linearly polarized

antennas must have the same polarization as the tags, either horizontal or vertical.

Circular polarized antennas are not dependent on the polarization of the tags.

Based on the Orientation Diagram, an initial rough estimate of the read zone is possible.

First set the send range of the i-PORT. To do this, use the i-PORT’s blink mode (Note:

Inhibit Time must be set to “0”). With a test tag (with LED) in hand, walk off the read

zone. As long as the tag blinks, you are still within the zone. Reduce the i-Q or i-D Tx

Power parameter as much as required until the read zone has reached the desired size.

System Test:

You can use the debug port to test the system and the range. Connect the i-PORT via

crossover network cable directly to a laptop computer. Create a Telnet connection by

dialing up on the debut port (IP-Address: 192.168.2.244, Port: 7090). Under “Start” and

“Execute”, type in “Telnet”. This terminal program will then be started.

Cable Length vs. Range

100

0.00 5.00 10.00 15.00 20.00

Cable Length (m)

Range (%)

Range