AI1422E Reader
TransCore Proprietary
vii
Occupational/Controlled Environment
Agency
Power Density (mW/cm
2
)
MPE minimum distance
Time (min)
in
cm
OSHA
10
8
20
6
FCC
3.05
14
36
6
IC
1.95
18
45
6
General Population/Public/Uncontrolled Environment
Agency
Power Density (mW/cm
2
)
MPE minimum distance
Time (min)
In
cm
OSHA
10
8
20
6
FCC
0.61
31.5
80
30
IC
0.28
47
120
6
power density in W/m
2
. Thus, the maximum permissible exposure for general population/
uncontrolled exposure at 915MHz is 2.77 W/m
2
. The average time is 6 minutes. The maximum
permissible exposure (MPE) is the following:
Controlled Environment
Power density = 0.6455*frequency(in MHz)
0.5
W/m
2
with a Reference Period time of 6 Min
General Public/Uncontrolled Environment
Power density = 0.02619*frequency(in MHz)
0.6834
W/m
2
with a Reference Period time of 6 Min
Using the frequency (in the middle of the band of operation of this equipment) of 915MHz and the
highest antenna gain that this equipment is certified for use in a final installation, the minimum
safe distance was calculated. The MPE minimum distances are 18in (45cm) for the Controlled
environment and 47in (120cm) for the General Public/Uncontrolled environment.
TransCore Recommendation on MPE (Maximum Permissible Exposure)
The calculated power densities and MPE distance for each of the agencies respective to the
environment is shown below.
Summary of Contents for 1422E
Page 16: ...Before You Begin 1...
Page 20: ...AI1422E Reader TransCore Proprietary 1 5...
Page 21: ...2 System Overview...
Page 25: ...AI1422E Reader TransCore Proprietary 2 5 Figure 2 2 Antenna to Tag Centerline Tolerance...
Page 26: ......
Page 27: ...3 Interface Connections...
Page 32: ...User Guide TransCore Proprietary 3 6...
Page 33: ...4 Installation Instructions...
Page 41: ...AI1422E Reader TransCore Proprietary 4 9...
Page 42: ...5 System Test Procedures...
Page 45: ......
Page 46: ...6 Communications Protocols...
Page 49: ......
Page 50: ...7 Command Codes...
Page 87: ...User Guide TransCore Proprietary 7 38...
Page 88: ...8 Troubleshooting and Maintenance...
Page 93: ......
Page 94: ...Character Conversion A...
Page 96: ...B Technical Specifications...
Page 99: ......