User Manual
Table Of Contents
- SAFETY OPERATION INSTRUCTIONS
- OVERVIEW
- FCC NOTE
- IC NOTE
- MANUFACTURER’S NOTE
- RF EXPOSURE WARNING
- ELECTRICAL SPECIFICATIONS
- MECHANICAL SPECIFICATIONS
- ENVIRONMENTAL CONDITIONS
- MECHANICAL OUTLINE
- CONNECTIONS
- AVAILABLE, OPTIONAL FEATURES
- ALARM CONDITIONS
- VARIABLE GAIN ADJUSTMENT AND LED INDICATORS
- INSTALLATION
- OPERATION
- DIAGNOSTICS GUIDE
- APPENDIX 1
- APPENDIX 1
- APPENDIX 2
18 | Page
APPENDIX 2
The horizontal I
and vertical I
space antenna isolation for a scenario as in Figure 6 can be
computed analytically, using the following equations:
I
[
db
]
= 22 + 20log
dh f
3 10
GTx GRx
*Under assumptions of far field condition)
I
[
db
]
= 28 + 40log
dv f
3 10
GTx GRx
I
[
db
]
= (I
I
)
90°
+ I
Antenna Separation variable definitions:
I
[dB]
isolation between horizontally separated transmitter and receiver antennas
dh
[m]
the horizontal distance from the centre of interferer antenna to that of the
interfered with receiver antenna
dv
[m]
the vertical distance from the interferer antenna to the interfered with receiver
antenna, (measured from radiation center-to-radiation center)
f [Hz]
the wavelength of the interfered with system frequency band
GTx [dBi]
gain of the transmitter antenna
GRx [dBi]
gain of the receiver antenna
I
[dB]
Isolation between vertically separated transmitter and receiver antennas.
[
°
]
arctan(
dv
dh
)