R-tron Inc. APEX1933 ユーザーズマニュアル
APEX1933 USER
MANUAL V1.2 Tech Support: 1-888-317-8766
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2.4.3 RFU (Radio Frequency Unit)
The RFU (RF Unit) is a bi-directional amplifier that sharply filters out unwanted noise.
2.4.4 Duplexer
A duplexer is a device that combines two or more signals onto a common channel or
medium to increase its transmission efficiency.
medium to increase its transmission efficiency.
2.4.5 PSU (Power Supply Unit)
The AC-DC adaptor supplies a steady DC power to the APEX19xx equipment by drawing
power from the general in-wall AC outlets.
power from the general in-wall AC outlets.
2.4.6 NCU (Network Control Unit)
The NCU (Network Control Unit) is the control unit of the APEX19xx. The NCU controls and
monitors operational parameters, alarms, records event and performs many other functions.
monitors operational parameters, alarms, records event and performs many other functions.
2.4.7
ANTENNA REQUIREMENTS
ANTENNAS: please read your manufacturers antenna specifications before installation. Your
antenna will require a type “N” connection. The antenna, coax, and fittings must be 50
ohms impedance.
MAXIMUM ANTENNA SIZE CONNECTED TO THE APEX1933 REPEATER IS 12dBi,
The CDMA repeater requires antennas that operate in the desired frequency range of the
CDMA repeater. The APEX1933 Repeater has a frequency operating range of 1850 to 1915
MHz for the up- link, and 1930 to 1995 MHz for the downlink. Your antennas must operate
within these frequencies.
Failure to select the proper antennas will degrade the performance of your repeater.
antenna will require a type “N” connection. The antenna, coax, and fittings must be 50
ohms impedance.
MAXIMUM ANTENNA SIZE CONNECTED TO THE APEX1933 REPEATER IS 12dBi,
The CDMA repeater requires antennas that operate in the desired frequency range of the
CDMA repeater. The APEX1933 Repeater has a frequency operating range of 1850 to 1915
MHz for the up- link, and 1930 to 1995 MHz for the downlink. Your antennas must operate
within these frequencies.
Failure to select the proper antennas will degrade the performance of your repeater.
2.4.8
ANTENNA ISOLATION & COAX CABLES
To protect wireless CDMA networks from interference caused by oscillation, the APEX1933
Repeater has internal automatic oscillation detection/control and auto shut down of the
repeater.
Improper installation practices could can initiate automatic shut-down of your repeater.
All repeaters require antenna isolation to prevent oscillation. The usable gain level of your
repeater is directly linked to the antenna isolation values. The maximum gain of your
repeater must be adjusted to a minimum of 10 dB lower than your antenna isolation values.
For example, if your antenna isolation value is 43 dB then your maximum usable repeater
gain is 33 dB.
Repeater has internal automatic oscillation detection/control and auto shut down of the
repeater.
Improper installation practices could can initiate automatic shut-down of your repeater.
All repeaters require antenna isolation to prevent oscillation. The usable gain level of your
repeater is directly linked to the antenna isolation values. The maximum gain of your
repeater must be adjusted to a minimum of 10 dB lower than your antenna isolation values.
For example, if your antenna isolation value is 43 dB then your maximum usable repeater
gain is 33 dB.