Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@dekolink.com
web www.dekolink.com
INSTALLATION
AND
OPERATING INSTRUCTIONS
FOR
HIGH POWER PCS REPEATER
MODEL: MW-BDA-PCS-X-50W90
Dekolink Wireless Proprietary and Confidential Information. Copying, Distribution, and Disclosure are
prohibited without Express Authorization from Dekolink Wireless Company.
50W 1 of 16 rev 1 10/03 Page
This document is protected by all applicable copyright laws.
Table of contents
1.
Repeater overview
Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@dekolink.com
web www.dekolink.com
___________________________________________________ 3
Block diagram description
2.
2.1.
Step attenuator and RF gain setting ______________________________________________ 5
2.2.
Automatic Level (gain) Control (ALC) functionality__________________________________ 5
2.3.
Power supply unit____________________________________________________________ 5
Power control unit
2.4.
Repeater connection module
2.5.
Remote monitoring and control module
2.6.
3.
4.
4.1.
4.2.
4.3.
5.
5.1.
5.2.
5.3.
Repeater operation
Repeater monitoring and control
Controls 8
Link alarm status (downlink & uplink)____________________________________________ 8
General alarm status _________________________________________________________ 8
Donor side antenna installation
Service side antenna Installation
Antenna isolation
Repeater installation
___________________________________________________________ 5
___________________________________________________________ 10
_____________________________________________________ 3
____________________________________________________ 6
___________________________________________ 6
__________________________________________________ 7
_________________________________________ 8
________________________________________________ 10
________________________________________________ 10
________________________________________________ 10
Installation steps
5.4.
6.
6.1.
6.2.
6.3.
Mechanical layout
Mechanical outline
7.
8.
Applicable documents
Repeater Management Application Software User Manual
50W rev 1 10/03 Page 2 of 16
Specifications
Electrical specifications
Mechanical specifications
Environmental conditions
____________________________________________________________ 13
RF exposure warning
Limited warranty
____________________________________________________________ 11
_____________________________________________________ 12
______________________________________________________ 12
_____________________________________________________ 12
_____________________________________________________ 13
___________________________________________________________ 14
________________________________________________ 15
___________________________________________________ 16
Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@dekolink.com
web www.dekolink.com
1. Repeater overview
Dekolink’s repeater assembly provides an exceptional capability to extend the coverage
area of radio communications into building areas and RF shielded environments.
The unit’s integrated high linearity power amplifiers contribute to the overall improved
system performance while avoiding non-linear related phenomena. The unit is based on a
duplexed path configuration, having sharp out of band attenuation for improved isolation
between the receiving and transmitting paths.
2. Block diagram description
Within the repeater, the downlink path receives RF signals from base station (donor side)
amplifies them and re-transmits them to the subscribers (service area). The repeater
uplink path receives RF signals from the service side, amplifies them and retransmits
them towards the donating base station. On both the repeaters’ ends, cavity tuned
duplexers separate the Tx and Rx signals (frequency separation) and diverts them to the
amplifying path while providing the required signal isolation.
Two amplifiers are used to perform the required amplification for each of the paths; a Low
Noise Amplifier (LNA) and a high power amplifier. Each of the LNAs includes an internal
step attenuator that allows adjusting the gain of the relevant path to the required level
depending on the specific field situation.
50W rev 1 10/03 Page 3 of 16
Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@dekolink.com
web www.dekolink.com
TO
BASE
Figure 1 - Repeater RF block diagram
Downlink
Coupler
Uplink
Attenuator
Duplexer
LNA
Attenuator
Power
Monitor
Power
Amplifier
Power
Amplifier
Attenuator
Power
Monitor
ALC
TO
MOBILE
Duplexer
LNA
CONTROLS
& CONTROL
MONITOR
MODULE
ALARMS
ALARMS
ALC
CONNECTION
MODULE
+28
VDC
AC/DC
POWER
SUPPLY
POWER ON
LED
AC
IN
50W rev 1 10/03 Page 4 of 16
Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@dekolink.com
web www.dekolink.com
2.1. Step attenuator and RF gain setting
For proper operation and in order to avoid oscillations, Dekolink’s suggestion is to have
an isolation value between the base station antenna (donor side) and the mobile antenna
(service side) that exceeds the repeaters’ set gain by 12dB.
A step attenuator integrated in the LNA can be adjusted to change the repeaters’ gain in
1dB steps, within a range of 31dB. Adjustment is done via SW.
2.2. Automatic Level (gain) Control (ALC) functionality
In order to prevent saturation of the power amplifiers, the repeater is equipped with ALC
circuits on both its paths. When a high signal is received, the ALC detects its amplitude
and sends a feedback signal to a voltage variable attenuator, which attenuates the signal
level so that the output power of the amplifier does not exceed a preset limit.
The uplink ALC is always on.
The ALC function on the downlink path can be enabled/disabled via SW. If the ALC on the
downlink path is disabled then the amplifier gives maximum gain.
2.3. Power supply unit
The repeater includes a high efficiency power supply unit able to supply the required
power needed to run it.
This module converts the supplied mains voltage, to +28VDC.
2.4. Power control unit
The power from the +28VDC power supply unit is connected to this module.
This connection unit contains:
Power On/Off switch (28VDC)
DC fuse
50W rev 1 10/03 Page 5 of 16
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