Svantek SV 271 LITE User manual

USER MANUAL
SV 271 LITE
MONITORING STATION
Warsaw, 2019-06-19
Rev. 1.02
Copyright © 2019 SVANTEK.
All rights reserved.

SV 271 LITE 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-LITE v3.01
and SD270A-LITE 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 withoutnotice and does notrepresent
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 271 LITE User Manual
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IMPORTANT NOTES BEFORE USE
✓Only SVAN 971 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 971 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 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 discharged batteries can damage their batteries. Storing with
discharged batteries for more than one month may result in impossibility to recharge
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 up to 100% of their capacity. Batteries should
be charged at least every 6 months.
✓Monitoring station and SB 272 have their own chargers, which are incompatible: SB 270
is a waterproof power supply for SV 271 LITE, whereas SB 273 is an indoor charger for
SB 272.
✓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.

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Table of Contents:
IMPORTANT NOTES BEFORE USE .......................................................3
1. INTRODUCTION.................................................................................5
1.1. Features .......................................................................................................5
1.2. Accessories included .................................................................................6
1.3. Accessories available.................................................................................6
2. MONITORING STATION SET............................................................7
2.1. SV 271 LITE standard set and optional elements.....................................7
2.1.1. SV 271 LITE - waterproof case............................................................. 8
2.1.2. SD 270(A) LITE Controller.................................................................. 11
2.1.3. SB 270 - external power supply with AC/DC converter ...................... 12
2.1.4. SVAN 971 - Sound and Vibration Analyser......................................... 13
2.1.5. SA 271 - outdoor microphone protection kit........................................ 15
2.2. Optional accessories for SV 271 LITE system........................................16
2.2.1. SV 33B –Class 1 Sound Calibrator.................................................... 16
2.2.2. SB 272 - External rechargeable battery.............................................. 16
2.2.3. SB 271 - Solar panel .......................................................................... 17
3. OPERATING THE STATION............................................................18
3.1. Powering....................................................................................................18
3.2. Controller interface...................................................................................18
3.3. Modes of station operation.......................................................................20
3.3.1. Operational mode............................................................................... 20
3.3.2. Battery charging mode ....................................................................... 20
3.3.3. Bootstrap mode .................................................................................. 20
3.4. Assembling the station.............................................................................21
3.5. Switching on the station...........................................................................23
4. SV 271 CONFIGURATION...............................................................24
4.1. SV 271 configuration via SVAN 971 user interface ................................24
4.2. SV 271 configuration via SvanPC++........................................................26
APPENDIX A. SV 271 LITE TECHNICAL DATA...................................27
APPENDIX B. LIST OF RELATED DOCUMENTS................................30

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1. INTRODUCTION
SV 271 LITE is an outdoor monitoring station
based on the SVAN 971Class 1 sound level
meter and SA 271 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
using 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 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 271 outdoor kit protects the SVAN 971
preamplifier and microphone from weather
conditions. The SA 271 is made of lightweight
materials and can be easily installed on a mast
with standard mounting threads.
SVAN 971 can be easily removed from the station case and used as a hand-held
sound level meter.
1.1. FEATURES
•SV 271 LITE is a portable monitoring station housed in an IP 67 waterproof
case dedicated for periodic outdoor measurements.
•The station is based on the SVAN 971 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 according to the IEC 61672-1:2013
standard.
•The Time history of results such as Leq, Max, Min and Peak is saved on a
micro SD-card.

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•The station can perform real-time frequency analysis in 1/1 or 1/3 Octave
bands and save it as time-history data.
•The 1/3 Octave real-time frequency analysis allows the analysis of the noise
frequency contents.
•Recording to Wave format during measurements and in parallel to the time
history logging. Once downloaded to a PC it can be played back. Settings such
as triggers or recording time are adjustable
•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 an outdoor use.
•Military standard CONNECTORS provide reliable, robust and waterproof cable
connections.
1.2. ACCESSORIES INCLUDED
SVAN 971
Class 1 Sound Meter including time history logging and: prepolarised
½” condenser microphone with nominal sensitivity 38 mV/Pa
(SV 7052), microphone preamplifier (SV 18)
SM 271 LITE
Outdoor monitoring station for SVAN 971 including: 17Ah battery and
external power supply (SB 270)
SC 271
Preamplifier cable for SV 18 (SA 271) and SV 271, 6 meters
SA 270D
Desiccator for outdoor protection kits
SA 271
Outdoor protection kit for SV 7052 microphone (microphone,
preamplifier, cable and desiccator not included)
SA 250
Carrying case for SA 271, SB 270, cables and accessories
SvanPC++
PC Software for MS Windows for downloading and viewing data
1.3. ACCESSORIES AVAILABLE
SV 33B
Class 1 Sound calibrator: 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)

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2. MONITORING STATION SET
2.1. SV 271 LITE STANDARD SET AND OPTIONAL ELEMENTS
The SV 271 LITE station consists of
two carrying cases. The main case is
waterproof with an internal 17 Ah
battery and internal charging unit
supporting powering from external DC
or a solar panel. The SVAN 971 Class
1 sound level meter is installed inside
but can be removed and used as a
hand-held meter.
All accessories fit conveniently into a
second carrying case.
The SV 271 LITE station includes:
•outdoor microphone kit (1),
•waterproof case with battery,
charging unit and connectors
(2),
•controller (3),
•SVAN 971 –Class 1 Sound
Level Meter and Analyser (4),
•power supply (5).
The waterproof case is equipped with:
•external power connector (6),
•air pressure compensation
valve (7)
•input signal connector (8).
1
2
3
4
6
8
7

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The outdoor microphone kit (1) and
outdoor power supply (5) are packed
inside the second transportation case
together with microphone, windscreen
(9), power supply and input cables.
Additional accessories for SV 271 LITE system, not included in the standard set, but in
many applications, essential for reliable system operation and task performance are:
1. Sound calibrator (SV 33B),
−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. mast with adjustable height
from 1.5 meter to 4 meters
(SA 206),
−type: Manfrotto
269BU
2.1.1. SV 271 LITE - waterproof case
The IP 67 waterproof case houses and protects
the main elements of the monitoring station:
•controller,
•SVAN 971 instrument,
•other internal elements such as:
rechargeable battery, connectors, cables,
circuit boards.
Note: Only SVAN 971 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.
1
5
9

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SVAN 971 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 <Shift> and <Start/Stop> keys,
2. unscrew the input connector and
disconnect the input cable,
3. disconnect the USB cable.
The controller is fixed in the station case by a
Signal Power Combo connector and can also be
removed fromthe case. To do this the user should
pull the controller up and remove it from the slot.
To return it the user should put the controller inthe
slot and press on it to achieve a good fix with the
connector.
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 a 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.
Use the silica gel bags (optional accessory) for
absorbing any remaining moisture after closing
the lid.
The valve should be released if opening the top
lid is problematic.
Note: The valvemust be closed whenthe station is used outdoors, otherwise
the case is not sealed against moisture.
The station case is equipped with two Souriau UTO type connectors for:

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•input signals from the microphone
(INPUT).
•powering station and charging the internal
battery (DC SUPPLY).
To connect the cable to the case socket, start by
lining up the key on the plug and socket, then lock
the connector by turning the ring clockwise (only
the ring close to the socket will rotate).
To disconnect cables, 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 a Lead-Acid
rechargeable battery (17Ah, 12V), located in the
bottom of the case.
The battery can be used in 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.

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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 the station with a discharged battery can damage the
battery. Storing the station with a discharged battery for more than one
month may result in impossibility to recharge the battery.
Note: If the station is planned to be stored for a long period of time, it is
recommended to charge its battery up to 100% of its capacity. The battery
should be charged at least every 6 months.
2.1.2. SD 270(A) LITE Controller
The SV 271 LITE monitoring station is equipped
with the SD 270 LITE (and later modification
SD 270A LITE) controller that integrates and
controls all system modules and is responsible for
the powering of all elements of the monitoring
station.
A very important task of the controller is power distribution - it provides appropriate DC
power to the SVAN 971, 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
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.
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

SV 271 LITE User Manual
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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 LITE 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 interface of the SVAN 971 (USB socket).
Note: Communication of the controller or SVAN 971 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
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 971 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 971 and
waituntil all LEDsare off, then extract the controller from the case andrepeat
steps from 2 to 4.
2.1.3. 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

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2.1.4. SVAN 971 - Sound and Vibration Analyser
SVAN 971 is 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 271 LITE
system. Its role is to make measurements and
save results in files. The measurement results
can be downloaded analysed later with the use
of the SvanPC++ software.
SVAN 971 can be easily removed from the case
and used as an independent hand-held sound
level meter/analyser, not as an integral part of
the SV 271 LITE system.
Main important features of SVAN 971 as a part of
SV 271 LITE 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, LN%,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 SvanPC++
software.
•All required weighting filters: A, B, C, Zare
available with this instrument.
•SVAN 971 can, simultaneously to the meter
mode, perform real time 1/1 Octave or
optional 1/3 Octave analysis (optionally)
including calculations of statistical levels.
Note: See also SVAN 971 user manual.
SVAN 971, when it works with the monitoring
station, is powered from the USB.

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Note: As a part of the SV 271 LITE station SVAN 971 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!
To extract the batteries
the user should switch
off the instrument,
unscrew the bolt, take
off the black bottom
cover of the instrument
and slide the batteries
out.
The user should then fix the bottom cover back on.
SVAN 971 is delivered with 8GB micro SD-card.
The user may exchange it for a 32GB card, but before insertion the card must be
formatted as FAT32.
The micro-SD Memory Card is in the slot under
the bottom cover and can be accessed after the
bottom cover is removed.
To extract the card from the card-slot, the user
should push on the card and then pull it out of the
slot.
There are some important settings, which should be assured in the instrument as a
part of the monitoring station:
1. The Compensation Filter should be set to
Outdoor: Environment or Outdoor: Airport
filter (path: <Menu> / Measurement /
Comp. Filter / Outdoor). Both filters are
dedicated for the permanent outdoor
monitoring application with the SA 271
outdoor kit. The characteristics of the outdoor
filters depend on the application:
environmental (the acoustic signal is parallel
to the microphone’s grid) or airport (the
acoustic signal is perpendicular to the
microphone’s grid). The frequency
characteristic of the designed filters is given
in App. C to the SVAN 971 manual.
►
Other settings depend on measurement.
All measurement, instrument and transmission settings can be set up via SVAN 971
user interface, or via the SvanPC++ program.

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2.1.5. SA 271 - outdoor microphone protection kit
The SA 271 outdoor kit protects the SVAN 971
preamplifier and microphone from weather
conditions. The use of the outdoor kit requires an
extension cable between the instrument and its
preamplifier (SC 271). The SA 271 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 the use 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 971
user manual.
As an option the user 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 to red, 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: After assembling the SA 271 or after
calibration check that the windscreen foam is
properly installed. It should be shifted close
to the anti-bird spikes. Otherwise the SA 271
free-field characteristics will be different from
declared ones.
For absolute certainty, push the windscreen
up to the stop.
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.

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Note: See also SA 271 Assembly Guide to learn how to assemble and
disassemble the microphone’s outdoor protection.
Note: Correct connection of the microphone is not signalled by the controller
therefore it is recommended to perform a test measurement each time the
station is turned on.
2.2. OPTIONAL ACCESSORIES FOR SV 271 LITE SYSTEM
2.2.1. SV 33B –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 a sound
pressure of defined level and frequency.
SV 33B Sound Calibrator produces a sound
pressure of defined level 114 dB at a frequency of
1 kHz.
2.2.2. SB 272 - External rechargeable battery
SB 272 is an external source of DC power for the
monitoring station. SB 272 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 station in
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 case.
SB 272 has one 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
itself (as the internal station battery with solar panel or external power supply).
Note: SB 272 cannot be charged by the SB 270 station 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 can damage the battery. Storing
SB 272 with a discharged battery for more than one month may result in
impossibility to recharge the battery.

SV 271 LITE User Manual
17
Note If: SB 272 is planned to be stored for a long period of time, it is
recommended to charge its battery up to 100% of its capacity. The battery
should be charged at least every 6 months.
2.2.3. SB 271 - Solar panel
The SB 271 solar panel (40 Watt, 12 V) extends the
working time of the monitoring station. The size and
weight of thepanel 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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3. OPERATING THE STATION
3.1. POWERING
The SV 271 LITE monitoring station can be powered from:
•internal rechargeable battery,
•external power supply (SB 270);
and optionally from:
•external rechargeable battery (SB 272),
•solar panel (SB 271).
When the power supply is connected, it starts powering the station and loading the
internal battery in parallel (as a voltage source).
When the external rechargeable battery is connected to the station the station
controller switches the powering from the internal battery to the external one. As soon
as the external battery is discharged the controller switches powering back to the
internal battery.
When the solar panel is connected to the station it starts to load theinternal battery (as
a current source). And all the time that the solar panel charges the internal battery, the
station continues to be powered from the internal battery.
The status of powering is indicated at the controller’s panel by a combination of DC,
CHARGING, BAT 1 or BAT 2 LEDs (see Table below).
Note: It is recommended that the batteries of SV 271 LITE and SB 272 are
charged before going on site.
Note: Monitoring station and SB 272 have their own chargers, which are
incompatible: SB 270 is a waterproof power supply for SV 271 LITE, whereas
SB 273 is an indoor charger for SB 272.
Note: SVAN 971 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!
3.2. CONTROLLER INTERFACE
The controller interface consists of several LEDs, which indicate the configuration of
the station power supply and charging process:
•DC –external power supply connection state (AC/DC converter),
•CHARGING –charging state of the internal battery,
•BAT 1 –internal battery state,
•BAT 2 –additional external battery state.

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Colour of LEDs can be red, orange or green. Colour of DC, CHARGING, BAT 1 or
BAT 2 LEDs depend on the state of the power supply and charging of the internal
battery.
The table below shows combinations of LED colours in the specific supply states.
Power from
Internal battery
Power supply
External battery
Solar panel
DC
off
green
off
off
CHARGING
off
•red when
charging;
•green when
charged
off
•red when
charging;
•green when
charged
BAT 1
•green if
loaded > 50%;
•orange if
loaded 20-
50%;
•red if loaded
<20%;
•blinking red if
loaded <8%;
•off if 0%
loaded or
disconnected
•when
charging,
colour is
changed:
red-orange-
green;
•green when
charged
off
•when
charging,
colour is
changed:
red-orange-
green;
•green when
charged
BAT 2
off
off
•green if
loaded > 50%;
•orange if
loaded 20-
50%;
•red if loaded
<20%;
•blinking red if
loaded <8%;
•off if 0%
loaded or
disconnected
off

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3.3. MODES OF STATION OPERATION
3.3.1. Operational mode
In the Operational mode, the SVAN 971 and controller are switched on and the
following modules are powered continuously: SVAN 971 instrument, controller and
outdoor microphone. The power supply for these modules can be switched off only by
turning off the SVAN 971 instrument.
When the station case is open all LED diodes of the controller shine, informing about
the station condition. The SVAN 971 display is switched on permanently regardless of
the instrument’s settings.
When the station case is closed all LED diodes of the controller are off and the
SVAN 971 display is also off in order to save energy.
3.3.2. Battery charging mode
When the SVAN 971 is switched off but there is a power supply (voltage from SP 270
or current from solar panel) and the lid is open, only DC, CHARGING and BAT 1 LEDs
of the controller will be active and these LEDs show:
•connection of AC/DC converter indicated by green DC LED,
•charging of the internal battery indicated by red CHARGING LED. When
charging is complete CHARGING LED turns green and BAT1 LED stops
changing colors and also turns green,
•status of the internal battery charging indicated by green-orange-red BAT 1
LED.
If the lid is closed all LEDs will be off but charging will continue.
3.3.3. Bootstrap mode
The bootstrap allows upgrades of the internal firmware of the controller.
There are two ways to activate “bootstrap mode”:
•by removing the controller from the monitoring station and connecting it to the
PC through the USB or
•by connecting the controller to the PC via USB while SVAN 971 is off (all LEDs
should be turned off).
Activation of bootstrap mode is indicated:
•in the case of SD 270, by the green BAT 1 LED or
•in the case of SD 270A, by the LED above the TEST key.
Note: USB connection between controller and PC can be established only if
USB driver for SVANTEK instruments had been previously installed on the
PC. USB driver can be downloaded from www.svantek.com