Asyst Technologies Advantag 9100, Техническое руководство

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Page 30 Draft Rev. AX5
AdvanTag 9100 Technical Manual
Chapter 2: Theory of Operation
Interfaces
a
Antenna Performance
The AdvanTag antennas work in conjunction with the AdvanTag Reader ATR9100 to read
and write the MicroTag. Communications occur between the antenna and the MicroTag
using very low radio frequency (134.2khz). Performance of these antennas (read and
write distance as well as speed) is affected by the presence of metal and RF generators,
such as color monitors in the antenna communication field.
Read/Write Performance Factors
Factors that influence tag read and write performance:
• Proximity of the tag and antenna
• Length of cable between the AdvanTag Reader and the antenna (including exten-
sion cables)
• Orientation of the tag to the antenna
• Amount of metal adjacent to either the tag or the antenna
• Amount of background EMF in the environment
NOTE . . .
I
F AN ANTENNA IS POSITIONED AGAINST A MICROTAG
,
THE ANTENNA WILL NOT
READ IN MOST CASES
. A
LL OF THE RESULTS LISTED WERE TESTED IN AN OFFICE
ENVIRONMENT
.
RF Field Diagrams (9100 Reader only)
The diagrams accompanying the types of antenna for reference only. Note the following
conditions for each diagram:
• The coil of micro-tag must be completely contained in write area.
• The shaded area in center is a non-write area (null).
• Write ranges are approximately 50% of read ranges.
• The read and write distances cited are for reference only. Ranges are dependent
upon actual installed environment.
• It may not be possible to replicate the same results outside of lab environments
due to a variety of environmental conditions.
Stick Antennas
The stick antenna 9700-9097-01 is designed to be attached to the external antenna
connector of the ATR 9100 and optimized for use in metallic environments such as a
300mm Front-Load (PN 9700-6224-02). The average read range is 2.0" (50.8mm). These
stick antenna diagrams refer to a stick antenna as being flat on the YZ axis, centered at
0,0,0.