Sensormatic View Manager 96 Console Installationsanleitung PDF herunterladen (Seite 156)

156 Sun Java System RFID Software 3.0 Administration Guide • February 2006

In an environment where tags move in and out of the read field of a reader, it is

important to read as fast as possible to be able to start negotiating with new tags

coming into the read field. That is why in dynamic environments the variable is

usually small. The environment property is dependent on the location of the

system. Generally, it is safe to start with the smallest value (00 for dynamic, 04 for

static) to evaluate the performance. To improve reads, adjusting the property up

or down might be necessary.

Practically, this value should remain at 4. There are few benefits to changing this

value, unless you are sure that your environmental conditions are relatively

constant.

■ CombinedAntenna – This property indicates that all the antennas marked with

“included” are grouped. That means a host has only to address the antenna with

the smallest index to get reads from all combined antennas. For example, if

antenna 1, 3 and 4 are combined, the host executes Read Full only for antenna 1 to

get reads from antenna 1, 3 and 4.

This property only works for antenna 1. The reader tends to produce antenna

faults whenever a value other than antenna 1 is chosen.

Because you generally want to distinguish between antennas, using this property

is discouraged and is not connected. The property has been kept in case those

interested in using it want to make future modifications.

■ Wait – Specifies the reader wait time that is used by the underlying adapter

framework to pause between read cycles. The normal operation of the reader is to

issue a read command, because autoread is simulated, one read command is

required for each read cycle. The reader returns all tags read during this time,

after which, the adapter framework waits for the time specified by this property.

<ems:properties>

<ems:property>Environment</ems:property>

<ems:value>4</ems:value>

</ems:properties>

<ems:properties>

<ems:property>CombinedAntenna</ems:property>

<ems:value>1</ems:value>

</ems:properties>

<ems:properties>

<ems:property>Wait</ems:property>

<ems:value>80</ems:value>

</ems:properties>

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Sensormatic View Manager 96 Console Installationsanleitung Seite 156