SEMCO maritime BRTS33 Signal Booster User Manual
- June 9, 2024
- SEMCO maritime
Table of Contents
SEMCO maritime BRTS33 Signal Booster
About this manual This manual describes installation, commissioning, operation and maintenance of the BRTS33 Signal Booster, and the Operational and Maintenance Software. The first part of the manual describes the Signal Booster hardware and the second part describes the software. Hardware and software mentioned in this manual are subjected to continuous development and improvement. Consequently, there may be minor discrepancies between the information in the manual and the performance and design of the hardware and software. Specifications, dimensions and other statements mentioned in this manual are subject to change without notice.
Hardware
Safety
Caution!
This manual lists a set of rules and warnings to be accomplished when
installing, commissioning and operating a BRTS33 Signal Booster from Semco
Maritime. Any omission may result in damage and/or injuries to the System
and/or the System Operators or Users. If an instruction is not clear or you
consider is missing, please make contact immediately to Semco Maritime. See
www.semcomaritime.com for contact information.
Dangerous Voltage Warning
Any personnel involved in installation, operation or service of this equipment
must understand and obey the following: The power supply unit supplied from
the main power contains dangerous voltage level, which can cause electric
shock. Switch the main power off prior to any work in such equipment. Any
local regulations are to be followed when servicing MOUs. Authorized service
personnel only are allowed to service repeaters while the main is switched on.
R &TTE Compliance Statement
This equipment complies with the appropriate essential requirements of
2014/53/EU (RED).
Station Ground
BTS chassis, Signal Booster, feeders, donor antenna, service antenna/s and
auxiliary equipment (splitters, tabs, .etc) are required to be bonded to
protective grounding using the bonding stud or screw provided with each unit.
Electrostatic Discharge
Static electricity means no risk of personal injury but it can severely damage
essential parts of the Signal Booster, if not handled carefully. Parts on the
printed circuit boards as well as other parts in the Signal Booster are
sensitive to electrostatic discharge. Never touch printed circuit boards or
uninsulated conductor surfaces unless absolutely necessary. If you must handle
printed circuit boards or uninsulated conductor surfaces, use ESD protective
equipment, or first touch the Signal Booster chassis with your hand and then
do not move your feet on the floor. Never let your clothes touch printed
circuit boards or uninsulated conductor surfaces.
Disposal of Electric and Electronic Waste
This product shall be disposed as used electronic and not as unsorted waste.
Packaging materials shall be sorted as per local requirements.
FCC Compliance
WARNING : This is a 90.219 Class B device. This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and QUALIFIED
INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee
to operate this device. You MUST register Class B signal boosters (as defined
in 47 CFR 90.219) online at www.fcc.gov/signal-
boosters/registration.
Unauthorized use may result in significant forfeiture penalties, including
penalties in excess of $100,000 for each continuing violation.
The installation procedure must result in the signal booster complying with
FCC requirements 90.219(d). In order to meet FCC requirements 90.219(d), it
may be necessary for the installer to reduce the UL and/or DL output power for
certain installations.
ATTENTION : This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.
ATTENTION : FCC regulation mandate that the ERP of type B signal boosters should not exceed 5W. This Signal Booster has a composite output power of 17dBm, therefore the gain of the DL and UL antenna should be of 14dBi or less and maintain a minimum separation of 20 cm from all persons.
Maximum Permissible Exposure for human safety
To guarantee the safety of humans in the vicinity of the signal boosters
radiating elements, antennas, the following limitations shall apply to the
installation.
- No additional amplifiers may be used to enhance the output power of the signal booster
- Maximum antenna gain is limited to 14 dBi
MPE calculation report can be obtained upon request
Product Description
The BRTS33 signal booster is designed for installation in industrial
environments but can also be installed in office environments. Power to the
device is catered for via a 24VDC circular plug providing a sealed connection.
The RF part of the BRTS33 signal booster is a band selective and due to its
duplex operation it consists of two identical designed amplifier modules such
as uplink and downlink. The in- and output of the two modules are combined by
cavity duplexers. On the output of the duplexer serving the inside a -20dB
coupler is attached for providing an additional small power signal for special
confined areas within wind turbines, typically the TP compartment. The signal
booster is monitored by a small microcontroller where configuration and alarms
are handled from within. HMI to the microcontroller is provided by an external
application running on a COTS computer, i.e. a laptop. Communication from the
software towards the microcontroller is done via an IP connection over
Ethernet. The communication protocol used is SNMP for both alarm handling and
configuration. All radio connectors on the signal booster is N-type
connectors. Ethernet connectivity is provided via a sealed RJ45 connector.
Installation
The equipment is designed for outdoor use but do not install to places where
is it exposed to direct sunlight, heating radiator, conditioning system or any
similar equipment. An appropriate shadowing must be provided if is inevitable
to be placed under direct sunlight. Care should be taken not to stop the free
air convection around the repeater. At least 25-50 cm free distance should be
kept in every direction around the unit. It can only be fixed to the wall by
using the supplied mounting bracket (included in the package), because only
this guarantees the proper mechanical fixing and cooling of the repeater. The
repeater should be fixed on the wall in vertical position with the coaxial
connectors pointing downward. The cables should be connected as appropriate
according to the labels.
Connector ports and indicator
The signal booster is having connectivity for external parts placed at the
bottom of the signal booster.
- MOBILE : Antenna connector for serving area. N-female type connector
- MOBILE COUPLER : Antenna connector for serving area. N-female type connector
- DONOR : Antenna connector for pickup antenna. N-female type connector
- CONTROL : RJ45 interface for IP communication
- STATUS : Status indicator of the signal booster
- Solid green : Normal operation
- Flashing green : One or more faults/errors
- MAINS : 24VDC connector. The power cable supplied with the signal booster uses blue for neutral and brown for positive 24VDC
- GND : Grounding terminal point M8 bolt.
Software
The software package for the signal booster consists of two applications, one for finding the IP address of the signal booster and a configuration and monitoring tool.
Product Finder
The product finder utility is used to find the IP address of the signal
booster. The information of the signal booster is broadcasted to the utility
on port 38142 UDP. To have the utility to work it is required to be on the
same layer 2 network as the signal booster and have any potential firewall
shutdown or having it to accept incoming traffic on port 38142 UDP. From the
utility it is possible to get the following information for each individual
repeater:
- Description
- IP Address
- Serial
- HW Ver.
- FW Ver.
- Date of manufacture
- MAC address
- Running State
- SNMP Port
First-time setup
The factory default user configuration does not provide a secure way to access
the repeater. The default authentication and privacy passwords are the same
for all devices. If repeaters were left at the factory default settings, an
attacker would only need to find out a single (easy to guess) password to
compromise potentially many devices. To ensure that a device with unsecure
user settings cannot be put into operation, parameters can only be monitored
but not changed while the device still has its factory default user
configuration. To enable write access to parameters, it is necessary to
perform the first-time setup procedure. Once first-time setup has been
completed, only the end user is able to access the device. To perform the
first-time setup complete the below steps:
- Open the control application and select SNMPV2 in connection type. Enter in the following connection details
- IP Address (Found with the product finder utility)
- Port : 161 (Default)
- SNMP Communities
- Read : public
- Write : private
- In the control view select “Network Settings” and type in the project specific details. If using DHCP leave settings unchanged
- Default IP : Project specific IP. Click “Apply” to confirm new IP
- IP Mask : Project specific netmask. Click “Apply” to confirm new IP Mask
- Gateway : Project specific gateway. Click “Apply” to confirm new gateway
- Untick DHCP if not used
- Click “Security” for setting up authentication
- Enter in Read/Write communities for SNMP v2
- Click “Save Ini” in the top to save the configuration to the signal booster.
- Click “Config Management”
- Click “Save Configuration” and save the configuration to the local computer for archive and backup purpose
- Click “Restart Device” to perform a device restart.
RF Configuration
The signal booster needs to be configured for the specific environment that it
is installed in. The uplink and downlink chain in the signal booster is
configured individual with regards to gain of the signal, muting of uplink
signal and adaptive gain. Each of the parameters are handled below.
Uplink/Downlink gain setting
The uplink and downlink chains can be configured individually with what gain
to apply to the signals received. The gain can be adjusted between 40-70dB in
1dB steps. The maximum gain that can be applied to the configuration is
determined by the isolation between the donor side and the mobile side. With a
spectrum analyzer and signal source determine the isolation between the two
antenna sides on the operating frequency. The maximum gain is then calculated
with the below formula Ma ≤ IsolationdB + 15dB The gain applied to the
uplink/downlink chain shall be less than
Adaptive Gain
The device is capable of automatically setting its gain appropriately to
achieve a desired downlink forward power level. When adaptive gain is enabled,
the gain and ALC level parameters are managed automatically by the device and
can no longer be set by the user. The user can influence the adaptive gain
operation by setting the Adaptive Gain Target Level. This parameter can also
be changed after adaptive gain is enabled. Since when adaptive gain is
activated, the device automatically manages gain values to prevent overdrive,
overdrive protection cannot be active at the same time as adaptive gain. After
enabling adaptive gain, the device will change uplink and downlink gain values
symmetrically to achieve the target downlink forward power. The adaptive gain
function has two modes of operation: fast mode and slow mode. Fast mode is
started in the following cases:
- After power up if the initial value of the adaptive gain function is “ON”.
- After the user has switched on the function.
- The adaptive gain target level is changed.
- Uplink muting ceases to be active.
When fast mode is started, both uplink and downlink gain are set to the same value, and the ALC levels are set to the factory default values. During fast mode operation the repeater continuously monitors if there is overdrive or not. The monitoring is performed by checking the overdrive level of the uplink and downlink modules every second. If the overdrive level is lower than the allowed maximum value (3 dB for the BRTS33), that is, there is no significant overdrive, the gain of the repeater is increased by 1 dB in both the uplink the downlink modules until the downlink forward power reaches the current adaptive gain target level. If after any increase in gain, the device detects an overdrive condition, the gain is decreased. This increase/decrease of the gain is performed by modifying the attenuator value that is shown in the control software. Fast mode ends in any of the following cases:
- After the first decrease of gain (or increase, if the downlink forward power was above the target level when adaptive gain was started).
- The target downlink forward power level has been reached.
- The gain has reached its maximal value (or minimal, if the downlink forward power was above the target level when adaptive gain was started).
Slow mode operation starts after the fast mode has ended. During slow mode the overdrive level is monitored just like in fast mode. However, in slow mode, the time intervals for increasing or decreasing the gain are different than in fast mode. The gain is increased by 1 dB only if there is no overdrive for 1 minute. The gain is decreased by 1 dB if overdrive occurred during the last second or if the downlink forward power is above the target level. Therefore, the maximal gain increase speed is 1dB/minute and the maximal gain decrease speed is 60 dB/minute.
Overdrive protection
Overdrive can arise in the repeater if the gain is too high (output level
would exceed the ALC level) or a mobile device is too close to the uplink
antenna.
Overdrive is indicated by parameters “Overdrive Level” and “Overdrive State”.
Overdrive Level is displayed in dB units and is calculated from the ALC
regulating voltage. If the Overdrive Level is in normal range there is no
overdrive. The square near the Overdrive Level value is green and “Overdrive
State” will show “No Overdrive”. If the Overdrive Level is too high (over 6 dB
for BRTS33), a momentary overdrive status is indicated. The square near the
Overdrive Level changes to red and “Overdrive State” will show “Overdrive”.
Momentary overdrive does not cause an alarm in the device, meaning that no
trap message is sent about it.
If the overdrive condition does not cease for 30 minutes, the “Overdrive State” parameter will show “Overdrive over 30 min”. This creates an alarm in the device which can cause a trap message to be sent depending on the trap mask set by the user . If the continuous overdrive exceeds 30 minutes and the overdrive protection is enabled the RF stage of the uplink and downlink modules will be switched off for 1 hour. The module state among the monitored parameters will show “OFF”. After 1 hour has elapsed since switching off RF power, the uplink and downlink RF stages are switched on for 10 seconds to check if the overdrive condition is still present or not. The Overdrive State parameter will show “Overdrive (trying)”. If the overdrive still exists the RF stages will be switched off again for 1 hour. If there is no overdrive at the end of the 10 second check period RF power remains switched on and the repeater operates normally.
Mute Function
The device is capable of monitoring the uplink RF input power and switching
off transmission if it is below a user-specified level. When the mute function
is activated, the device continuously monitors the level of the uplink side
input signal. If the RF input power does not rise above the user-defined mute
threshold level for 3 seconds, the device will switch off transmission in the
uplink side. If a useful signal with proper signal strength (higher than the
threshold level) is detected at any time, transmission is switched on
immediately. The typical delay for switching transmission on is about 10 μs.
Alarm configuration
Alarm Settings
Under tab “Alarm settings” the user can define the action the device will
take for each alarm. SNMP trap sending is supported for each alarm condition
in the BRTS33. Failure of a monitored parameter results in an alarm in the
system. Most monitored parameters in the device can generate an alarm in case
of failure. In the Alarm Settings tab, the user can enable/disable SNMP trap
sending independently for each alarm source. Disabled alarm sources do not
take part in trap sending. Disabling alarm sources does not affect the front
panel status LED alarm indication of the repeater. The colored square next to
the parameter name shows the momentary alarm state of the parameter: the
squares in this column are colored red if the parameter is outside acceptable
limits or colored green if the parameter is within limits. By checking the
“Trap” box near the parameter the user can enable the alarm source for SNMP
trap sending. Note that SNMP trap sending is globally enabled/disabled in the
SNMP Settings tab. This window also controls other parameters e.g. timing
intervals of SNMP traps. After making the desired settings it can be applied
and stored in the device by clicking the “Apply” button. Note that alarm
settings are not affected by the Save Ini, Recall Ini and Recall Factory
commands. These settings are saved immediately when the user presses the Apply
button.
SNMP Settings
The BRTS33 unit can send SNMP v1/v2c/v3 trap messages (also called
notifications) about alarms that occur in the system. The trap sending
functionality can be configured in the SNMP Settings tab.
SNMP configuration
The following trap parameters can be set:
-
Min. SNMP Version:
Determines the minimum SNMP protocol version that the device requires from incoming requests. Requests that have a lower version number than this are ignored. Changes take effect after restart. -
Global Trap Enable:
Enables or disables trap sending globally. -
Heartbeat Trap Enable:
Enables or disables trap sending when the device operates without alarms. -
Alarm Trap Interval:
Time interval in seconds between two consecutive traps in case of failure. Note that this time interval is only applicable when the alarms of the device are unchanged. If the alarms change, a new trap message is generated immediately. -
Heartbeat Interval:
Time interval in seconds between two consecutive heartbeat traps. -
Trap Enable:
Up to five different trap destinations can be set (these are the IP addresses of the managers that need to monitor the repeater). Each trap destination can be enabled/disabled separately. -
Trap Community:
The trap community in case of SNMP v1/v2c traps, or a username in case of SNMP v3 traps. Since SNMP v3 uses authentication and optional encryption and these parameters can be set separately for each user, the username set here must be of an active user that is already present in the system. -
Trap Target:
The destination IP address trap messages will be sent to. Generally, this is the IP address of an SNMP manager
Trap generation of each alarm source can be enabled/disabled in the Alarm Settings tab of the unit.
RF Downlink Power alarm
The downlink power alarm is enabled/disabled by the tick box in the downlink
column of the control application.
The alarm threshold level that the downlink RF power is compared to. If
downlink low power detection is enabled and the downlink RF power is lower
than this value for about a minute, the downlink RF power is considered to be
incorrect and an alarm is generated. The Power Alarm Level can be set in the
+0…+20 dBm range.
Configuration Management
The Config Management tab in the control software allows managing the
configuration of a single device. Configuration files are saved in human-
readable XML format. The following functionality is provided:
-
Save Report:
Save a report file containing all controlled and monitored parameters of the device. This file is ideal for e.g. documenting current settings at time of installation. -
Save Configuration:
Save a configuration file containing all controlled parameters of the device. -
Open Configuration File:
Open a report or configuration file. The settings contained in the file can be viewed in the control program and uploaded to the device. -
Upload Selected Configuration file:
Uploads the selected configuration file to the current device. All controlled parameters in the device will be updated, including initial values. -
View Selected File as Tree:
Displays the parameters contained in the selected configuration file in the panel on the right.
Head office
Semco Maritime A/S Esbjerg Brygge 30 6700 Esbjerg Denmark
- Tel. No.: +45 79166666
- Fax No.: +45 75156580
- [email protected]
- www.semcomaritime.com
Although every reasonable effort is made to present current and accurate information, Semco Maritime A/S makes no quarantee and reservs the right to make changes without prior notice. © 2016, Semco Maritime A/S and the Semco Maritime Group of Companies