Cirrus Optimus+ User manual

Quick Start Guide
Using Bluetooth®and
dBAcve

Optimus sound level meter - Bluetooth and dBActive quick start guide
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About this quick start guide
• The instrucons in this user manual refer to the operaon of Cirrus Research plc
Opmus+ sound level meters with version 5.0 or higher of the rmware
• Where the terms ‘Opmus+’ or ‘Opmus’ are used, it refers to all variants within
the Opmus+ range of instruments, including the Opmus+ Yellow (CR:150 series),
Opmus+ Red (CR:160 series), Opmus+ Green (CR:170 series) and Opmus+ Purple
(CR:190 series)
• The dBAcve mobile applicaon must be downloaded from either Google Play
(Android devices) or the App Store (iOS devices) in order for the funcons outlined in
this quick start guide to be ulised
• Full technical details for the Opmus+ range of instruments can be found on the Cirrus
Research website at www.cirrusresearch.co.uk/library/datasheets/
• For full operaonal instrucons, please consult the instrument handbook that was
supplied with your Opmus+
Please note: the screenshots that have been used for the purposes of demonstrang the
operaon of Bluetooth and the dBAcve smartphone applicaon on the Opmus+ have
been taken from a mobile device that runs the iOS mobile operang system. Screens and
menus may appear dierently for devices running the Android operang system.

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Copyright
Copyright © Cirrus Research plc 2010-2019
All rights reserved.
You may re-use this document/publicaon (not including the Cirrus Research plc logo and
other product logos) free of charge in any format for research, private study or internal
circulaon within an organisaon. You must re-use it accurately and not use it in a misleading
context.
You must not modify text, images or illustraons in any way. The material must be
acknowledged as Cirrus Research plc copyright and you must give the tle of the source
document/publicaon.
Where any third-party copyright material is idened you will need to obtain permission
from the copyright holders concerned.
Trademarks
Cirrus Research plc, the Cirrus Research plc Logo, doseBadge, DOSEBADGE, Opmus, the
NoiseTools Logo and the Noise-Hub Logo are either registered trademarks or trademarks of
Cirrus Research plc in the United Kingdom and/or other countries. Microso and Windows
are registered trademarks of Microso, Inc. The Bluetooth® word mark and logos are
registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Cirrus
Research is under license. Other trademarks and trade names are those of their respecve
owners.
Updates
In the interests of connuous product improvement, Cirrus Research plc reserves the right
to make changes to product specicaons without noce.
To learn about the latest updates that have been implemented into this product and to
download the most current version of this user manual, visit our website at
www.cirrusresearch.co.uk
Version 1 Q1 2019

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Contents
1. Downloading dBActive and connecting to your Optimus+.............................
2. Using your Optimus+ with your mobile device through dBActive.................
2.1 Viewing live data...................................................................................................
2.2 Starting and stopping a measurement............................................................
2.3 Reviewing measurement data.........................................................................
2.4 Changing your instrument’s settings..............................................................
2.5 Viewing information about your instrument................................................
5
7
7
9
10
11
13

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1 DownloadingdBAcveandconnecngtoyour 
 Opmus+
Search for dBAcve on either the App Store
(iOS devices) or Google Play (Android devices).
Download the app to your device.
Enable Blutooth on your Opmus+ instrument.
This can be found by navigang to the
‘Advanced Opons’ menu.
Open dBAcve on your device. Press ‘Scan for
devices’.
Once your instrument has been discovered,
press on its name to connect to it.

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Enter the code from your Opmus+ into your
mobile device and press ‘Pair’.
Before your Opmus+ can connect to your
mobile device, you will be asked to input a code
that will be displayed on the Bluetooth menu
screen.
Your Opmus+ will now be paired with your mobile device. You will see the default home
screen on the dBAcve app, which displays live noise measurement informaon. From this
screen, you will be able to navigate around the app, which will be described in the coming
pages.

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2 UsingyourOpmus+withyourmobiledevicethrough
 dBAcve
This screen is the default home screen for
dBAcve and displays live noise data for a
number of parameters, each of which can be
changed. Press the arrow on the value you wish
to change. A menu will appear allowing you
to select the value you wish to see (see image
below).
2.1 Viewinglivedata
One of the key features of dBAcve is the ability to view live noise data remotely. This
informaon can be viewed in a number of dierent ways, which are outlined below:
2.1.1 Using the overview screen
Please note: some noise parameters are unavailble on certain variants of the Opmus+.

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2.1.2 Using the live data screen
This screen displays live noise data for any two
chosen parameters (which can be changed by
pressing the arrows on the chosen parameter).
The graphs refresh every second and provide a
visual representaon of the noise levels where
your Opmus+ is measuring.
2.1.3 Using the octaves screen
This screen displays live data for 1:1 octave
bands.

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From the overview screen, choose either ‘Start
measuring’ or ‘Start measuring/audio’ to begin a
measurement. If you choose ‘Start measuring/
audio’, the measurement will include an audio
recording of the noise. If you choose ‘Start
measuring’, audio will not be recorded.
Please note: audio recording can be switched
on/o manually during a measurement using
the opon above the start buon. Audio
recording is only available on certain variants of
the Opmus+.
2.2 Starngandstoppingameasurement
As well as being able to view live noise data, dBAcve allows you to start and stop noise
measurements remotely, meaning that your Opmus+ can be used in potenally hazardous
and/or dicult-to-access areas.
2.2.1 Starngandstoppingameasurement
When a measurement is in
process, the red start buon
changes to a green stop
buon. Press this to end
your measurement.
If you need to highlight a specic event during
a measurement for when you come to review
your data in the NoiseTools analysis soware
(supplied with your Opmus+), press ‘Mark
measurement’ when a measurement is in
process.
2.2.2 Markingameasurement
A conrmaon box will appear at the boom
of the screen to let you know that the
measurement has been marked.

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This screen displays the data for all main
noise parameters. You can cycle through
measurements by using the arrows at the
boom of the screen.
2.3 Reviewingmeasurementdata
The ‘Measurements’ screen allows you to review previous measurement data for the
connected instrument. This includes both measurements that have been made on dBAcve
and those that have been made navely on your Opmus+.
2.3.1 Reviewingmeasurements
If you’re experiencing
issues downloading your
measurement data or the app
is displaying measurements
from a previously connected
instrument, press ‘Retry’
to refresh the informaon
displayed.
If you want to share measurement data, press
the ‘Share’ buon.
2.2.2 Sharingmeasurementdata
A popup box will appear lisng the opons
available. The measurement data will be shared
as a text-only list, which you will then be able
to edit as you wish.
Please note: sharing opons will vary depending
on the operang system of your device and the
third-party applicaons you have installed.
Please note: you must ensure that any
measurement data you wish to keep is either
stored on your Opmus+ or downloaded to
a PC using NoiseTools. Measurement data is
not permenantly stored in dBAcve and will
be overwrien once a dierent instrument is
connected to the app.

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2.4 Changingyourinstrument’ssengs
2.4.1 Changingthedateandme
Press on the exisng opon to open a menu,
from which you can select a new value.
2.4.2 Changingmehistoryrate
When using your Opmus+ remotely, you can
change some of its sengs via dBAcve on the
‘Sengs’ screen.
From this menu you can change the date/me of
your instrument, me history rate, audio quality,
and mer sengs. You can also turn audio
triggers on/o.
Press ‘Sync with device’ to syncronise your
instrument’s date/me seng with that of your
mobile device.
Once complete, a nocaon will display at the
boom of the screen.

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Press on the exisng opon to open a menu,
from which you can select a new value.
Standard quality (16-bit, 16 kHz)
High quality (24-bit, 48 kHz)
Studio quality (32-bit, 96 kHz)
2.4.3 Changingaudioquality
Press on the exisng opon to open a menu,
from which you can select a new value.
Repeat mer - allows measurements to be
stopped and started automacally over a long
period of me. The repeat timer is synchronised
2.4.4 Changingmersengs
Press on the switch to either turn audio triggers
on or o.
An audio trigger will start your instrument
recording the audio and noise levels when a
certain threshold has been met. This seng can
be customised on your Opmus+.
A conrmaon message will display aer the
seng has been selected.
2.4.5 Turningaudiotriggerson/o
to the real-time clock, so if you choose a 30 minute duration, the measurement will
begin on the hour and at 30 minutes past. When the measurement ends, a new one
will begin and last for the next 30 minute interval.
Single mer - The single timer allows measurements to automatically stop after a
pre-defined period of time. If you set the single timer duration to 15 minutes and
enable the single timer option, then all measurements will automatically stop after
15 minutes.

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2.5 Viewinginformaonaboutyourinstrument
The last screen in dBAcve displays informaon about your Opmus+ instrument.
a. current baery level
b. % free space for measurement data
c. % free space for audio recordings
d. number of measurements saved on your
instrument
e. your instrument’s type
f. unique serial number for your instrument
g. rmware version installed on your
instrument
h. microphone informaon (model and serial
number)
i. preamplier informaon (model and serial
number)
j. oset value based on the last calibraon of
your instrument and the date/me it was
last calibrated
k. full list of capabilies/features of your
instrument
a
bc
d
efg
h
i
j
k

• Lightweight and robust design
• No controls, dials or screens
• Completely tamperproof
• Monitor individuals’ noise
exposure
• Analyse data with licence-free
NoiseTools soware
The only partner you’ll ever need when it comes to tackling noise
Theworld’srstwirelessdosimeter
• Bluetooth® enabled
• Can be operated through a
smartphone app
• Includes 1:1 octave band lters
• Custom mers can be used for
scheduled measurements
• New discreet design
Simplicityredened
• Noise-acvated warning sign
• Alerts employees as to when PPE
is required
• Various messages available
• Dierent languages available
• Custom noise level trigger can be set
Creangsaferenvironments

Contact our sales team for more informaon
[e-mail]
Cirrus hold UKAS
calibraon accreditaon
We can calibrate sound level meters
and acousc calibrators to the latest
Brish standards, as well as octave
band lters.
Having your instruments calibrated
to UKAS standards means that
the data they record is completely
accurate, reliable and traceable.
We also oer standard traceable
calibraon for all types of noise
monitoring equipment and vibraon
meters, from any manufacturer
Need more support in
using your instruments?
Whether it’s product-specic
training, noise at work awareness or
environmental noise training,
Cirrus Research oers a host of
courses to help you become more
condent when it comes noise.
With locaons across the UK and
dates throughout the year, our
courses are perfect for anyone
who’s just starng out in noise
measurement, or for those seasoned
professionals looking to freshen up
their knowledge.
For every hour you spend at one of
our training courses, you’ll earn an
hour of CPD.

Version 1 - Q1 2019
www.cirrusresearch.co.uk
[e-mail]