ELPRO Technologies Pty Ltd E2-450 ユーザーズマニュアル
Elpro Technologies 450U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 1.0.12-Beta7
www.cooperbussmann.com/wirelessresources
13
Dipole and Collinear antennas
A dipole or collinear antenna transmits the same amount of radio
power in all directions - as such that are easy to install and use. The
dipole antenna does not require any additional coaxial cable;
however a cable must be added if using any of the other collinear
or directional antennas.
power in all directions - as such that are easy to install and use. The
dipole antenna does not require any additional coaxial cable;
however a cable must be added if using any of the other collinear
or directional antennas.
Collinear and dipole antennas should be mounted vertically,
preferably 1 wavelength away (see Figure 10 for distances) from a
wall or mast and at least 3ft (1m) from the radio module to obtain
maximum range.
preferably 1 wavelength away (see Figure 10 for distances) from a
wall or mast and at least 3ft (1m) from the radio module to obtain
maximum range.
Directional antennas.
Directional antennas can be
Yagi antenna with a main beam and orthogonal elements.
Directional radome, which is cylindrical in shape.
Parabolic antenna.
A directional antenna provides high gain in the forward direction, but lower gain in other
directions. This may be used to compensate for coaxial cable loss for installations with marginal
radio path.
directions. This may be used to compensate for coaxial cable loss for installations with marginal
radio path.
Yagi antennas should be installed with the main beam horizontal, pointing in the forward
direction. If the Yagi is transmitting to a vertically mounted omni-directional antenna, then the
Yagi elements should be vertical. If the Yagi is transmitting to another Yagi, then the elements at
each end of the wireless link need to in the same plane (horizontal or vertical).
direction. If the Yagi is transmitting to a vertically mounted omni-directional antenna, then the
Yagi elements should be vertical. If the Yagi is transmitting to another Yagi, then the elements at
each end of the wireless link need to in the same plane (horizontal or vertical).
Directional radomes should be installed with the central beam horizontal and must be pointed
exactly in the direction of transmission to benefit from the gain of the antenna. Parabolic antennas
should be m
exactly in the direction of transmission to benefit from the gain of the antenna. Parabolic antennas
should be m
, with
and the radiating element pointing in the direction of the transmission.
Power Supply
2.2
The 450U-E module can be powered from a 9 30 VDC
supply. The supply should be rated in accordance with the
Supply voltage and Radio power level. The power
requirements for the 450U-E unit are shown in the table below.
The positive side of the supply must not be connected to
earth. The supply negative is connected to the unit case
internally. The DC supply may be a floating supply or negatively
grounded.
supply. The supply should be rated in accordance with the
Supply voltage and Radio power level. The power
requirements for the 450U-E unit are shown in the table below.
The positive side of the supply must not be connected to
earth. The supply negative is connected to the unit case
internally. The DC supply may be a floating supply or negatively
grounded.
A Ground Terminal is provided on the back of the module. This Terminal should be connected to the Main Ground point
of the installation in order to provide efficient surge protection for the module (refer to the Installation Diagram)
of the installation in order to provide efficient surge protection for the module (refer to the Installation Diagram)
13.8VDC
24VDC
Quiescent
120mA
70mA
TX @500mW
400mA
220mA
TX @ 5W
1.2 - 1.5Amps
550mA - 650mA
Figure 11 Dipole Antenna
Figure 10 Collinear/Dipole Antenna
Figure 12 - Power Supply