Svantek SV 277 PRO User manual

USER MANUAL
SV 277 PRO
MONITORING STATION
Warsaw, 2019-09-02
Rev. 01.04
Copyright © 2019 SVANTEK.
All rights reserved.

SV 277 PRO User Manual
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Note: Because of continuous product improvement SVANTEK reserves the right to
make changes to product specifications without notice. To download the most up
to date user's manual please visit our web site at www.svantek.com.
This user’s manual presents the controller firmware revision SD270-PRO v5.01 and
SD270A-PRO v2.02.
The succeeding software revisions (marked with the higher numbers) can change
the view of some displays presented in the text of the manual.
WEEE Notice: Do not throw the device away with the unsorted municipal waste
at the end of its life. Instead, hand it in at an official collection point for recycling. By
doing this you will help to preserve the environment.
The software described in this manual is furnished under a license agreement and may be
used only in accordance with the terms of that agreement.
Copyright Notice
Copyright © 2019 Svantek Sp. z o.o.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
Trademarks or registered marks in this manual belong to their respective manufacturers.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
Disclaimer
Information in this document is subject to change without notice and does not represent a
commitment on the part of Svantek.
Svantek provides this document “as is”, without warranty of any kind, either expressed or
implied, including, but not limited to, its particular purpose. Svantek reserves the right to
make improvements and/or changes to this manual, or to the products and/or the programs
described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However,
Svantek assumes no responsibility for its use, or for any infringements on the rights of third
parties that may result from its use.
This product might include unintentional technical or typographical errors. Changes are
periodically made to the information herein to correct such errors, and these changes are
incorporated into new editions of the publication.
Technical Support Contact Information:
web: www.svantek.com
e-mail: [email protected].pl

SV 277 PRO User Manual
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IMPORTANT NOTES BEFORE USE
✓Before installing the station at the measurement site, make sure that the protective caps
on the four anti-bird spikes of the SA 277 outdoor microphone protection kit are
removed. It is recommended to use the protective caps during transportation, storage
and other operations with the instrument like, laboratory calibration, etc. to avoid
personal injury.
✓Only SVAN 977A and the controller can be disconnected and removed from the station
case by the user. All other disassembling work should be performed strictly by an
authorized service team.
✓The producer does not recommend removing the controller without a sound reason.
Double check that the controller has a good fixation in the connector after reconnecting.
✓Do not remove the battery from the case! This operation must be done only by the
authorised service.
✓SVAN 977A is powered from the external source and doesn’t use its internal batteries.
Internal instrument’s batteries must be removed for correct system operation and safety
reasons.
✓The correct connection of the accelerometer or microphone is not signalled by the
controller therefore it is recommended to perform a test measurement each time the
station is turned on.
✓During station operation it is recommended to charge the internal and external batteries
as often as possible; this will extend battery life. It is necessary to charge the battery
after any total discharge.
✓Monitoring station and/or SB 272 should not be stored for a long time with discharged
batteries. Storing with batteries in discharged condition may damage them.
✓If Monitoring station and/or SB 272 are planned to be stored for a long period of time, it
is recommended to charge their batteries to 100% capacity. Batteries should be charged
at least once per 6 months.
✓If the storage period is longer than one year, a discharge/charge cycle must be
performed. To do this, leave the device turned on until the battery is completely
discharged. Then charge the battery to 100% capacity.
✓Monitoring station and SB 272 have their own chargers, which are incompatible: SB 270
is a waterproof power supply for SV 277 PRO, whereas SB 273 is an indoor charger for
SB 272.
✓The windscreen influences the free-field characteristics of the SA 277 outdoor
microphone protection kit, therefore it is important to check its condition regularly. In the
case of visible degradation of the foam surface it must be replaced by the new one.

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Table of Contents:
IMPORTANT NOTES BEFORE USE...............................................................3
1. INTRODUCTION.........................................................................................6
1.1. Features................................................................................................................6
1.2. Accessories included..........................................................................................7
1.3. Accessories available .........................................................................................7
2. MONITORING STATION SET....................................................................8
2.1. SV 277 PRO standard set and optional elements.............................................8
2.1.1. SM 277 PRO - Waterproof Case ...................................................................9
2.1.2. SD 270(A) PRO - Controller.........................................................................12
2.1.3. SP 270 - 3G Modem....................................................................................13
2.1.4. SVAN 977A - Sound and Vibration Analyser...............................................14
2.1.5. SA 277 - Outdoor Microphone Protection Kit...............................................16
2.1.6. SB 270 - External Power Supply with AC/DC converter ..............................17
2.2. Optional accessories for SV 277 PRO system................................................17
2.2.1. SV 36 –Class 1 Sound Calibrator...............................................................17
2.2.2. SB 272 - External Rechargeable Battery.....................................................18
2.2.3. SB 271 - Solar Panel...................................................................................18
2.2.4. SP 272 - Alarm Lamp ..................................................................................19
2.2.5. SP 275 - Meteo Module...............................................................................19
3. OPERATING THE STATION....................................................................21
3.1. Powering ............................................................................................................21
3.2. Controller interface ...........................................................................................21
3.3. Modes of station operation...............................................................................23
3.3.1. Operational mode ........................................................................................23
3.3.2. Battery charging mode.................................................................................23
3.3.3. Bootstrap mode ...........................................................................................23
3.4. Configuring the station.....................................................................................24
3.5. Assembling the station.....................................................................................25
3.6. Switching on the station...................................................................................27

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4. REMOTE CONTROL VIA 3G CONNECTION .........................................28
4.1. SvanNET service ...............................................................................................28
4.2. Station list view .................................................................................................30
4.2.1. STATUS view ..............................................................................................31
4.2.2. LOG views...................................................................................................33
4.3. WEB INTERFACE view......................................................................................34
4.3.1. Live data view..............................................................................................35
4.3.2. Configuration views .....................................................................................38
4.3.3. STATUS view ..............................................................................................46
4.3.4. DATA FILES view........................................................................................46
4.4. Interface functionalities of 3G modem.............................................................47
4.4.1. Main communication channel ......................................................................47
4.4.2. SMS / E-mail alarming.................................................................................49
4.4.3. SMS command exchange............................................................................50
4.5. Remote Communication module of SvanPC++...............................................50
Appendix A. SV 277 PRO Technical Data...................................................51
Appendix B. List of related documents ......................................................55

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1. INTRODUCTION
SV 277 PRO is an outdoor monitoring station
based on the SVAN 977 Class 1 sound level
meter and SA 277 outdoor microphone kit. The
solution is recommended for short term and semi-
permanent noise measurement in the
environment.
The IP 67 rated case contains a lead-acid battery
the operating time of which can be easily extended
by connecting an external battery or a solar panel.
The intelligent charging unit enables the use of a
solar panel without expensive controllers or heavy
batteries. The case is fitted with very robust,
waterproof connectors (military standard).
The station provides broad-band results such as
Leq, Max, Min and Peak with all standard
weighting filters together with an incredible time-
history logging feature with two adjustable logging
steps. The broad-band results can be recorded in
three acoustic profiles which enable parallel
measurements with 3 different filters (e.g. A, C, Z)
as well as 3 different detector time constants (e.g.
Fast, Slow, Impulse).
The SA 277 outdoor kit protects the SVAN 977A
preamplifier and microphone from weather
conditions. The SA 277 is made of lightweight
materials and can be easily installed on a mast
with standard mounting threads.
SVAN 977 can be easily removed from the station case and used as a hand-held sound
level meter. The monitoring station uses a 3G modem for remote communication with the
Internet. SvanNET, a relay server, supports the connection between PC and station.
Thanks to SvanNET users may use a mobile phone or tablet to check the status of the
monitoring station.
1.1. FEATURES
•SV 277 PRO is a portable monitoring station housed in an IP67 waterproof case
dedicated for periodic outdoor measurements.
•The station is based on the SVAN 977A instrument which can be easily removed
from the case and used as a hand-held sound level meter.
•Class 1 noise measurements are performed over a very wide dynamic range over
110 dB from 10 Hz up to 20 kHz.
•The Time history of results such as Leq, Max, Min and Peak is saved on a micro
SD-card.
•The station can performreal-time frequency analysis in 1/1-octave bands and save
it as time-history data.

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•The option for 1/3-octave real-time frequency analysis allows analysis of the noise
frequency contents. The statistical analysis in 1/3 octave band is used for
verification of noise sources in the environment. It can be activated at any time by
entering the activation code.
•The option of time domain signal recording to Wave format works during
measurement and is logged in parallel to a time history. Once downloaded to a PC
it can be played back. Settings such as triggers or recording time are adjustable. In
addition to audio play-back, Wave file can be post-processed in the SvanPC++
software that provides the calculation of overall results such as Leq, Lmax, Lmin,
Lpeak as well as 1/3 octave and FFT calculations or RT60. It can be activated at
any time by entering the activation code.
•The 3G modem provides fast datatransferover the Internet to a PC with a standard
Internet connectivity.
•The remote communication settings are automatically adjusted to connect to
SvanNET.
•The station can be powered from an internal battery, external battery or external
DC power supply and is ready for direct connection to a solar panel. The powering
is managed by the intelligent charging unit.
•The station uses a waterproof charger that is designed for outdoor use.
•Military standard connectors provide reliable, robust and waterproof cable
connections.
1.2. ACCESSORIES INCLUDED
SVAN 977A
Class 1 Sound & Vibration Analyser with 1/1 octave analysis including:
prepolarised ½” condenser microphone with nominal sensitivity 35 mV/Pa
(SV 7052), microphone preamplifier with IEPE power supply (SV 12L),
foam windscreen (SA 22), USB 1.1 cable (SC 16)
SM 277 PRO
Outdoor monitoring station for SVAN 977A including: 17Ah battery, 3G
modem (SP 270) and external power supply (SB 270)
SC 277
Preamplifier cable for SV 12L, 6 meters
SA 270D
Desiccator for outdoor protection kits
SA 277
Outdoor protection kit for SV 7052 microphone (microphone, preamplifier,
cable and desiccator not included)
SA 250
Carrying case for SA 277, SB 270, cables and accessories
SvanNET
Web interface and connectivity support
1.3. ACCESSORIES AVAILABLE
SV 36
Class 1 Sound Calibrator: 94/114 dB@1000 Hz
SB 272
External battery for SV 27x monitoring stations series (33 Ah) including
indoor charger
SB 271
Solar panel for SV 27x monitoring stations (40 W)
SA 206
Mast with adjustable height from 1.5 meter to 4 meters (cover SA 21_45
included)
SP 275
Vaisala Weather Transmitter WXTxx type meteo module.
SP 272
WERMA, LED/Buzzer alarm lamp (12V DC).

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2. MONITORING STATION SET
2.1. SV 277 PRO STANDARD SET AND OPTIONAL ELEMENTS
The SV 277 PRO station consists of two
carrying cases. The main case is waterproof
with an internal 17 Ah battery and internal
charging unit supporting powering from an
external DC or a solar panel. The
SVAN 977A Class 1 sound level meter is
installed inside but can beremoved and used
as a hand-held meter.
All accessories fit conveniently into a second
carrying case.
The SV 277 PRO station includes:
•outdoor microphone kit (1),
•waterproof case with battery,
charging unit and connectors (2),
•controller (3),
•SVAN 977A –Class 1 Sound Level
Meter and Analyser (4),
•3G modem (5),
•power supply (6).
The waterproof case is equipped with:
•external power connector (7),
•SP274 meteo module connector (8),
•air pressure compensation valve (9)
•input signal connector (10).
The outdoor microphone kit (1) and outdoor
charger (6) are packed inside the second
transportation case together with
microphone and charger cables and
windscreen (11).
1
2
3
5
4
6
1
6
11
7
8
10
9

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Additional accessories for SV 277 PRO system, not included in the standard set, but in
many applications, essential for reliable system operation and task performance are:
1. Sound Calibrator (SV 36),
- see Chapter 2.2.1
2. external battery 33 Ah including
indoor charger (SB 272),
- see Chapter 2.2.2
3. solar panel 40 W (SB 271),
- see Chapter 2.2.3
4. meteo module (SP 275)
- see Chapter 2.2.4
5. light and sound alarm lamp, 12V DC
(SP 272)
- see Chapter 2.2.5
6. mast with adjustable height from 1.5
meter to 4 meters (SA 206),
Type: Manfrotto 269BU
2.1.1. SM 277 PRO - Waterproof Case
The IP67 waterproof case houses and protects the
main elements of the monitoring station:
•controller,
•3G modem,
•SVAN 977A instrument,
•other internal elements such as: rechargeable
battery, connectors, cables, circuit boards.
SVAN 977A can be removed from the case by the user
and used as a hand-held sound meter.
To do this the user should;
1. switch off the instrument by pressing together
<Alt> and <Start/Stop> keys,
2. unscrew the input connector and disconnect the
input cable,
3. disconnect the USB and power cables.

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The controller is fixed in the station case by a Signal
Power Combo connector and can also be removed
from the case. To do this the user should pull the
controller up and remove it from the slot.
To put it back the user should put the controller in the
slot and press on it to achieve a good fixation with the
connector.
Note: Only SVAN 977A and the controller can be disconnected and removed
from the station case by the user. All other disassembling work should be
performed strictly by an authorized service team.
Note: The producer does not recommend removing the controller without a
sound reason. Double check that the controller has a good fixation in the
connector after reconnecting!
The monitoring station case is equipped with an air
pressure compensation valve that enables the user to
open the case easily if the internal pressure is lower
than the atmospheric one.
Any remaining moisture after closing the lid will be
absorbed by the silica gel bags (optional accessory).
The valve should be released if opening the top lid is
problematic.
Note: The valve must be closed when the station is used outdoors, otherwise
the case is not sealed against moisture.
The station case is equipped with three Souriau UTO type connectors for:
•input signals from the microphone (INPUT).
•powering station and charging the internal
battery (DC SUPPLY).
•external interface for the SP 275 meteo module
or the alarm lamp (EXTERNAL INTERFACE).

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To connect a cable to a case socket, start by lining up
the key on the plug and the socket, then lock the
connector by turning the ring clockwise (only the ring
close to the socket will rotate).
To disconnect a cable, push the connector towards the
station and turn it counter-clockwise. New connectors
require more force so using a closed hand is more
effective than using only fingers.
The station is equipped with the Lead-Acid
rechargeable battery (17Ah, 12V), located in the
bottom of the case.
The battery can be usedin any chosen position without
the risk of leakage. The battery has a pressure relief
valves that allows safe dispersal of any excess
pressure inside the cell (VRLA).
Battery capacity may vary depending on the ambient
temperature.
The safety fuse is located on the left side of the
connection plate.
Note: Do not remove the battery from the case! This operation must be done
only by the authorised service.
Note: Battery is not restricted for air, surface and water transport. Classified as
non-hazardous material (IATA/ICAO Special Provision A67, DOT-CFR Title 49
parts 171-189, IMDG amendment 27).
Note: During station operation it is recommended to charge the internal battery
as often as possible; this will extend battery life. It is necessary to charge the
battery after any total discharge.
Note: The station should not be stored for a long time with a discharged battery.
Storing with batteries in discharged condition may damage them.
Note: If the station is planned to be stored for a long period of time, it is
recommended to charge its battery to 100% capacity. The battery should be
charged at least once per 6 months.

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Note: If the storage period is longer than one year, a discharge/charge cycle
must be performed. To do this, leave the device turned on until the battery is
completely discharged. Then charge the battery to 100% capacity.
The case lid is equipped with an antenna for 3G
modem.
2.1.2. SD 270(A) PRO - Controller
The SV 277 PRO monitoring station is equipped with
the SD 270 PRO (and later modification
SD 270A PRO) controller that integrates and controls
all system modules and is responsible for the powering
of all elements and communication between the
following elements of the monitoring station:
•SVAN 977A instrument,
•3G modem
and optionally
•SP 275 meteo module, alarm lamp etc.
Very important task of the controller is power distribution - it provides appropriate DC power
to every element of the system (managing external power sources such as a power supply
SB 270 or optional solar panel or external battery).
The next key task of the controller is integration of the whole system –examining the
communication, state and condition of every module of the system and the immediate
indication of all problems on the control panel by means of several LEDs or remotely using
3G Internet connection.
The controller also analyses the temperature condition inside the monitoring station case. If
the internal temperature is higher than 50oC, the controller will switch off internal battery
charging. If the temperature further increases over 65oC, the controller will switch off the
monitoring station. The station will be also switched off, if the internal temperature falls below
-30oC.
The TEST key in the SD 270A PRO controller enables the controller resetting. To do this
the user should press the TEST key for more than 20 seconds until the LED lights up.
Release the key and the controller reset will be done.
A mini USB connector is positioned on the front panel of the controller and is designated to
the controller firmware upgrade.
Note: The mini USB connector on the controller panel doesn’t provide any
measurement or setup data exchange with the PC. Such data exchange is
carried out via the USB Device 1.1 interface of the SVAN 977A (USB socket).
Note: Communication of the controller or SVAN 977A with a PC requires
installation of the USB drivers on your PC. USB driver for Svantek devices are
available on http://svantek.com/support-drivers-software.html

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Note: Before starting upgrading be sure that your SvanPC++ software is Off! If
not, please Exit it before starting any upgrading.
To upgrade the firmware of the controller, go through the next steps:
1. Switch off SVAN 977A and wait until all LEDs are off.
2. Connect the controller to the PC with SC 56 cable.
3. Run the “file2usb.exe”file on the connected PC. The BAT 1 LED will start flashing
a green colour.
4. After “Success” is registered on the PC, disconnect the SC 56 cable.
Note: In case of any problems with the upgrade, switch off SVAN 977A and wait
until all LEDs are off, then extract the controller from the case and repeat steps
from 2 to 4.
2.1.3. SP 270 - 3G Modem
The 3G modem (SP 270) provides fast data transfer
over the Internet to a PC with standard Internet
connectivity. A 3G modem type “GeMalto®EHS6
Terminal”is used.
GeMalto®EHS6 Terminal uses mini-SIM cards 25mm
x 15mm with Internet Access. The SIM slot accepts
1.8V and 3V SIM cards in accordance with GSM
11.12 Phase 2.
Note: See also GeMalto®EHS6 Terminal user manual.
The SIM-card should be inserted with the circuit-side
facing left in the slot by pushing it until it snaps hold.
The SIM-card can be removed from the card slot by
usinga pen or other flat object. Press on the card until
it snaps out. Use tweezers to remove the SIM-card
from the slot.
If settings of SVAN 977A in “Wireless Transfer” menu are correct then once you insert a
SIM card in the modem slot the remote communication settings of the modem are
automatically adjusted to connect to the SvanNET server. In some cases, APN should be
provided.
Note: Be sure that the PIN of the SIM card is off!

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2.1.4. SVAN 977A - Sound and Vibration Analyser
SVAN 977Ais a Class 1 Sound & Vibration level meter as well as a real time 1/1 or 1/3
octave analyser and is a core of the SV 277 PRO system. Its role is to make
measurements and save results in files, as well as to control data transfer via modem to
the SvanNET server or directly to the PC. The measurement results can be analysed later
with the use of the SvanPC++ software.
SVAN 977A can be easily removed from the case and used as an independent hand-held
sound or vibration level meter/analyser, not asan integral part of the SV 277 PRO system.
Main important features of SVAN 977A as a part of SV 277 PRO system:
•Three user configurable profiles allow
parallel measurements with independently
defined frequency filters and RMS detector
time constants. Each profile provides a
significant number of results (like Spl,Leq,
Sel, Lden, LEPd, Ltm3, Ltm5, Lnn,LR15,
LR60,Ovl,Peak,Max and Min).
•Advanced time history logging for each
profile provides complete information about
the measured signal using the SD-card
fitted in the bottom of the meter and can be
downloaded to any PC using SvanNET or
SvanPC++ software.
•All required weighting filters: A, B, C, Zare
available with this instrument.
•SVAN 977A can, simultaneously to the
meter mode, perform real time 1/1 Octave
or optional 1/3 Octave analysis including
calculations of statistical levels.
SVAN 977A, when it works with the
monitoring station, is powered from an
external power supply via the 7-16V socket.
Data transfer to the modem is done via the
Serial socket, the serial interface.
Other instrument sockets are not used in the
SV 277 PRO system.
not used
serial port
external power

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Note: As a part of the SV 258 PRO station SVAN 977A is powered from the
external source and doesn’t use its internal batteries. Internal instrument’s
batteries must be removed for correct system operation and safety reasons!
Note: The station is delivered without internal batteries inside the instrument. But
if you use SVAN 977A as a hand-held instrument, don’t forget to remove
batteries from the instrument every time you put it back into the station slot.
To extract the batteries, the user
should switch off the instrument,
unscrew the coin-operated
screw, take off the black bottom
cover of the instrument and slide
the battery tubes out.
The user should then fix the bottom cover back on.
SVAN 977A is delivered with 16 GB micro SD-card.
The user may exchange it for a 128 GB card, but before insertion the card must be
formatted as FAT32.
The micro-SD Memory Card is located in the slot
under the bottom cover and can be accessed after
removing the bottom cover.
To extract the card fromthe card-slot, the user should
push on the card and then pull it out of the slot.
There are two important settings, which should be assured in the instrument when it is a
part of the monitoring station:
1. The Compensation Filter should be set to
Outdoor Environment or Outdoor Airport filter
(path: <Menu> / Measurement /
Compensation Filter). Both filters are dedicated
for the permanent outdoor monitoring application.
The characteristics of the outdoor filters depend
on the application: environmental (acoustic signal
is parallel to the microphone’s grid) or airport
(acoustic signal is perpendicular to the
microphone’s grid). The frequency characteristic
of the designed filters is given in App. C to the
SVAN 977A manual.
2. Network should be set to GPRS (path: <Menu> /
Instrument / Wireless Connection / Network).
Other settings depend on measurement and
transmission type.

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All measurement, instrument and transmissionsettings can be set up via SVAN 977A user
interface, or remotely via the SvanNET server or SvanPC++ program.
Note: See also SVAN 977A User Manual.
2.1.5. SA 277 - Outdoor Microphone Protection Kit
The SA 277 outdoor kit protects the SVAN 977A
preamplifier and microphone from weather
conditions. The use of the outdoor kit requires an
extension cable between the instrument and its
preamplifier (SC 277). The SA 277 is made of
lightweight materials and is easy to install on a tripod.
This solution is recommended for short term and
semi-permanent noise measurements in the
environment.
The outdoor microphone kit has ¾” screw on its
bottom which enables using of standard tripods or
other user specific mountings. Technical data such as
direct and frequency characteristics associated with
the microphone are included in the SVAN 977A user
manual.
Optionally you may use desiccator - Silikogel. The
desiccator absorbs moisture commonly contained in
the air. The desiccator should be regenerated after
some period of use, when it changes colour tored, by
drying it for 3 hours in a temperature of 150°C. The
colour of the silica gel is visible through the hole on
the top of the desiccator.
Note: See also SA 277 Assembly Guide to
learn how to assemble and disassemble
the microphone’s outdoor protection.
Note: After assembling the SA 277 or after
calibration check that the windscreen foam
is properly installed. It should be shifted
close to the anti-bird spikes. Otherwise the
SA 277 free-field characteristics will be
different from declared ones.
For absolute certainty, push the windscreen
up to the stop.

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17
Note: Before installing the station at the
measurement site, make sure that the
protective caps on the four antibird spikes
are removed.
It is recommended to use the protective
caps during transportation, storage and
other operations with the instrument like,
laboratory calibration, etc. to avoid personal
injury.
Note: Correct connection of the microphone is not signalled by the controller
therefore it is recommended toperforma testmeasurement eachtime the station
is turned on.
2.1.6. SB 270 - External Power Supply with AC/DC converter
SB 270 is waterproof Single Output Switching Power
Supply which is characterised by:
•Universal AC input / Full range (90 ~ 264VAC)
•Protections: Short circuit / Over load / Over
voltage
•Fully encapsulated with IP65 level
•Fully isolated plastic case
2.2. OPTIONAL ACCESSORIES FOR SV 277 PRO SYSTEM
2.2.1. SV 36 –Class 1 Sound Calibrator
For result verification purposes, most norms and
standards impose the requirement to calibrate the
measurement channel before and after each
measurement or measurement session.
Sound calibrator is a device which produces sound
pressure of defined level and frequency.
SV 36 Sound calibrator produces sound pressure of
declared levels - 94 or 114 dB at a frequency of
1 kHz.

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2.2.2. SB 272 - External Rechargeable Battery
SB 272 is an external source of DC power for the
monitoring station. It includes a Lead-Acid
rechargeable battery (33 Ah, 12 V) and is dedicated
for outdoor use because of its waterproof case. The
battery capacity enables up to three times longer
operating time of the monitoring stationin comparison
to the station’s internal 17 Ah battery.
The SB 272 set includes the SB 273 indoor charger
and a cable for connection between SB 272 and the
monitoring station.
SB 272 has the same connector for charging and for power supply and therefore cannot
be used as a power supply for the monitoring station and at the same time be charged (as
the internal station battery with solar panel or external power supply).
Note: SB 272 cannotbe charged by themonitoring station SB 270 power supply!
Note: SB 272 is not restricted for air, surface and water transport. Classified as
non-hazardous material (IATA/ICAO Special Provision A67, DOT-CFR Title 49
parts 171-189, IMDG amendment 27).
Note: It is necessary to charge SB 272 after any total discharge, otherwise the
battery may lose its capacity.
Note: SB 272 should not be stored for a long time with a discharged battery.
Storing SB 272 with a discharged battery may damage it.
Note: If SB 272 is planned to be stored for a long period of time, it is
recommended to charge its battery to 100% capacity. The battery should be
charged at least once per 6 months.
Note: If the storage period is longer than one year, a discharge/charge cycle
must be performed. To do this, completely discharge the battery and then charge
it to 100% capacity.
2.2.3. SB 271 - Solar Panel
The SB 271 solar panel (40Watt, 17.5 V) extends the
working time of the monitoring station. The size and
weight of the panel enables easy transportation in the
dedicated carrying bag.
The SB 271 solar panel does not require additional
batteries or external controllers.
The mounting system enables mounting of the
SB 271 solar panel above the monitoring case which
provides a natural shade that protects the station
from overheating.
The SB 271 is equipped with a military standard
connector cable for direct connection to the
monitoring station.

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2.2.4. SP 272 - Alarm Lamp
The SP 272 is a type WERMA, LED/Buzzer alarm
lamp (12V DC).
The alarm lamp is connected to the
EXTERNAL INTERFACE connector instead of the
Meteo module.
In this lamp, the buzzer is disabled by default. To
enable it you should:
1. open the case by pushing the black button and
turning the plafond and
2. shift the switch to the left.
2.2.5. SP 275 - Meteo Module
SP 275 is a VaisalaWeather Transmitter WXTxxtype
meteorological module used with the SV 277 PRO
monitoring station.
It measures 6 most essential weather parameters
(barometric pressure, humidity, precipitation,
temperature, wind speed and direction) and also rain
and hail intensity. It has low power consumption
(working also with solar panels), is compact and light-
weight, has no moving parts, hasinternal heating and
can be easily installed with a one-bolt mounting
method.
SP 275 has an automatic control circuit that switches
the heating on at low temperatures.
Five measurement weather parameters (barometric
pressure, humidity, temperature, wind speed and
direction) are transferred from SP 275 to the
monitoring station every second.
Precipitation is measured and 3 values for rain and
hail (intensity, accumulation and duration) are
transferred, every 10 seconds, only when it is raining
or hailing These parameters are not averaged but
integrated.
2
1

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Note: Do not forget to align the transmitter so that the arrow on the bottom of the
transmitter points North.
Note: See also Vaisala WXT530 User Guide.
The controller then transfers the weather parameters
to SVAN 977A, which saves them in a logger file as
a history if the Meteo position is On in the
Logger Results list (path: <Menu> / Measurement /
Logging / Logger Results).
SVAN 977A also integrates weather parameters for
the period, defined by the parameter
Integration Period in SVAN 977A (path: <Menu> /
Measurement / General Settings) and then saves
them as Summary Results if the Meteo position is
On in the Summary Results list (path: <Menu> /
Measurement / Logging / Summary Results).