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Software Update Description The RTM 3.8 software update brings many new improvements to the BSM sounder modules. This update is available free of charge from the Simrad yachting website. Key Features for RTM 3.8: Transducer depth offset is now a networked setting Increased sensitivity in Low CHIRP Increased sensitivity in High CHIRP BSM is now retained as the sonar source after power cycling the attached MFD Key bug fixes for RTM 3.8: XID temperature readings becoming unreliable or invalid XID transducer selection improvements Digital depth number locks onto the surface clutter and not recovering* Improved time to reacquire the digital depth number when lost* Updated XID frequency selection for Airmar B175 family of transducers Improved BSM ability to retain user settings after a power cycle* * Requires accompanying update for Simrad displays © Navico Company Confidential
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SIMRAD BSM-3 and BSM-2 RTM 3.8 SOFTWARE UPDATE Software Update
Description
The RTM 3.8 software update brings many new improvements to the BSM
sounder modules. Thisupdate is available free of charge from the
Simrad yachting website. Key Features for RTM 3.8: Transducer depth
offset is now a networked setting Increased sensitivity in Low
CHIRP Increased sensitivity in High CHIRP BSM is now retained as
the sonar source after power cycling the attached MFD Key bug fixes
for RTM 3.8: XID temperature readings becoming unreliable or
invalid XID transducer selection improvements Digital depth number
locks onto the surface clutter and not recovering* Improved time to
reacquire the digital depth number when lost* Updated XID frequency
selection for Airmar B175 family of transducers Improved BSM
ability to retain user settings after a power cycle* * Requires
accompanying update for Simrad displays NavicoCompany Confidential
High CHIRP Performance
The sensitivity of High CHIRP has been increased Many users
reported having to turn their Gain settings down when using High
CHIRP, especiallywhen used in conjunction with low sensitivity
CHIRP transducers, this has been improved in the3.8 version High
CHIRP with v2.0.0 High CHIRP with v3.8.0 High levels of noise in
the water column with Gain set at 20 Auto Gain used without any
bias NavicoCompany Confidential Navico Company Confidential
Low CHIRP Performance New sensitivity measurements have been
implemented for less sensitive transducers When using Low CHIRP
with software version BSM-2/3 would apply the same amounts ofgain
to highly sensitive transducers (ex. R509LH) as it would to less
sensitive transducers(B175L). Often this would cause Low CHIRP to
miss fish targets that should have otherwisebeen visible. Low CHIRP
with v3.8 in 1,375ft Low CHIRP with v2.0.0 Fish targets-not noise
Auto Gain used without any bias Auto Gain used with +10 bias
NavicoCompany Confidential Improvements to Digital Depth
Tracking
BSM-2/3 now has improved ability to hold and reacquire a digital
depth It is expected behavior for the digital bottom lock to be
lost when turbulent water is run across the transducer. If thewater
is turbulent enough the sonar signal may be completely blocked and
the BSM may lock onto that clutter.Software version 3.8 will better
allow BSM to automatically regain the correct depth In addition,
the time to reacquire the digital bottom has been dramatically
improved over v If at any time thedigital depth number is lost,
recovery time should be within a few seconds. Time to reacquire can
be improved by making sure the Search Depth in the installation
panel is set correctly. Setting the Search Depth to Unlimited will
take the longest time to reacquire since it searches all of the
available sonar information for the digital depth. * Requires
accompanying update for Simrad NSS evo2 and NSO evo2 displays
NavicoCompany Confidential Navico Company Confidential
Temperature and XID Several customers have reported issues with
temperature and Airmar XID These include Temperature disappearing
from the sonar image Temperature going to 131oF (55oC) and locking
there Airmar XID not recognizing transducers properly Incorrect
frequency selections when transducers are identified correctly Each
of these has been corrected Problems with temperature and XID
readings are a result of the digital XID circuits inside the
transducer locking up and no longer responding. With software
version 3.8, BSM-2/3 can now reset the XID inside the transducer to
restore it to a usable state. The available frequency ranges for
each compatible transducer have been updated NavicoCompany
Confidential Navico Company Confidential
Airmar transducers All transducers have a period of testing to be
completed before being approved for use withSimrad sonar products.
The transducers that have been approved by Simrad R&D have been
given part numbers and can beordered directly through Navico. In
addition, ordering transducers through Navico is the best way to
ensure they ship with theappropriate connectors for your
application. We have made the switch with Airmar to now ship all
transducers with connectors- you will see anend to bare wire
transducers as the stock is cleared out and turned over. Simrad
does still offer the connector to bare wire adapter for
retrofitting transducers. NavicoCompany Confidential Performance
Screenshots Fishing the Upper Water Column
Using High frequency sonar to see fish targets near the surface in
1400ft depth NavicoCompany Confidential High Speed
Performance
High CHIRP at 23kts Fish Targets NavicoCompany Confidential Navico
Company Confidential
Fishing Dropoffs Using High CHIRP and 60kHz to track fish off a
steep drop off NavicoCompany Confidential Navico Company
Confidential
Availability BSM-3 RTM 3.8 is available now BSM-2 RTM 3.8 is
available now Download from There are separate updaters for BSM-2
and BSM-3. Please ensureyou download the correct version for the
equipment installed onyour vessel. Several software fixes also
require downloading and updatingyour Simrad NSS evo2 or NSO evo2
display- please check thedownload page and update your display
along with your BSMmodule NavicoCompany Confidential Navico Company
CONFIDENTIAL