RTI Cobia Smart R/F User manual

Cobia Smart R/F & Cobia Dental Intraoral
User Manual
English - v2019.12A

Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
2
NOTICE
RTI Group AB reserves the right to make changes to the Cobia Smart
R/F& Cobia Dental Intraoral and the information in this user manual
without prior notice.
RTI Group AB assumes no responsibility for any errors or
consequential damage that may result from the use or
misinterpretation of any information contained in this user manual.
Copyright © 2011-2019 by RTI Group AB. All rights reserved.
The content ofthis document may not be reproduced for any
purpose, other than supporting the use ofthe product, without prior
permission from RTI Group AB.
User Manual Downloads
www.rtigroup.com/downloads
You can download user manuals here:

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
Contents
..............................................................................................................
4
1. Product Overview
............................................................................................................1.1 User Interface 6
...........................................................................................61.1.1 Screen Description 6
...........................................................................................81.1.2 Keyboard Operation 8
..............................................................................................................
9
2. Getting Started
............................................................................................................2.1 Before Starting the Cobia for the First Time 9
............................................................................................................2.2 Charging the Battery 9
..............................................................................................................
10
3. Performing a Measurement
............................................................................................................3.1 Measuring with the Internal Detector 10
..............................................................................................................
11
4. Maintenance
............................................................................................................4.1 Scheduled Calibration 11
............................................................................................................4.2 Updating the System 11
..............................................................................................................
13
5. Technical Data
............................................................................................................5.1 Battery Charging Details 13
............................................................................................................5.2 Battery Warnings 13
..............................................................................................................
14
6. Troubleshooting
..............................................................................................................
14
7. Standards and Compliances
............................................................................................................7.1 Intended Use of the Cobia 15

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1 Product Overview
TOP VIEW
BOTTOM VIEW

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
#
Name
Description
1
Display
Cobia display. See section Screen Description
2
Up arrow button
Used to move up in theuser interface.Seesection Keyboard
Operation
3
Down arrow
button
Used to move down in the user interface. See section Keyboard
Operation
4
Left arrow button
Used to move left/back in the user interface. See section Keyboard
Operation
5
Right arrow
button
Used to move right or make a selection in the user interface. See
section Keyboard Operation
6
Menu and On/Off
button
Used to start and power off theCobia, and display the system menu.
See section Keyboard Operation
7
Positioning
marker
Marks the depth of the radiation measurement surface
8
Measurement
surface
Circular entrance surface for the measurement sensors
9
Status indicator
Indicates functional status of the Cobia. It flashes during system
start-up and lights up when thereis a signal triggering thesystem
10
Battery charging
indicator
The orange battery charging indicator is lit when the battery is
charging. See section Battery Charging Details
11
Micro-USB
connector
Used both to charge and to connect theCobia to a computer for
system updates. See sections Charging the Battery and
Updating the System
12
Measurement
center marking
Marks the center position of the radiation measurement on the
bottom side
13
Product label
Displays detailed information about the product and model (on the
bottom side)
14
Reset hole
Used to do a hardware reset of the Cobia. Marked "RST"(on the
bottom side)
6
8
8
9
8
8
13
9
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1.1 User Interface
1.1.1 Screen Description
Single view
List view
Menu view
Astatus field is displayed at the top ofthe screen. The left side ofthe field
shows the Radiation or Measurement Quality Code and a description ofthe
active range (1). The middle part ofthe field displays icons for when power
is supplied and when an external detector and/or internal MAS cable is
attached as well as warning symbols for when any settings are set to non-
standard values (2). The right side ofthe field displays an icon for external
power or USBsupply and an indicator for the battery level (3).
Asimple user guide is displayed at the bottom of the screen. For each view,
the buttons that are functional in this view are shown, together with a
short text describing the function ofthe buttons (4-6).
Single view
In the Single view, only one active parameter is
displayed, represented by the value and its
unit. Each unit is shown by a specific color.
Pressing the up/down arrow buttons / will
change the active parameter.
When using an external detector (EXT), a
correspondingindicator will appear in the

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
leftmost side ofthe unit field (not shown).
Note! The shown parameters may vary depending on the model of the
Cobia. The example picture shows a tube voltage measurement with Cobia
Flex R/F kV & Dose.
Located to the left ofthe value, two symbols may be visible:
1. A play symbol (triangle) is visible during the
measurement. It is filled (green)during the radiation
detection, and will then stay contoured while the Cobia
accepts continued measurement duringRestart Delay.
1B. When using the optional parameter cycling, a
rotating indicator will appear just above the play
symbol when the cycling is in progress.
2. Apulse indicator is shown below the play symbol.
This indicator is turned on when pulses are detected,
resulting in the display ofadditional pulse parameters.
List view
In the List view, all the available parameters
are shown simultaneously. The active
parameter (displayed in the Single view) is
indicated in color.
If a measurement is started when the Cobia
is in the List view, the display will switch to
the Single view during the measurement
and then return to the List view after completion.
Note! The available parameters may vary depending on the model ofthe
Cobia and attached detectors. The example picture shows a pulsed
measurement with Cobia Flex R/F kV & Dose.

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Main Menu view
The Menu view displays a set ofavailable
functions, selected by pressing the right
arrow button . Reset Measurement zeroes
and resets the meaurement. Prev.
Measurementsrecalls the results ofearlier
measurements. This is described in detail in
the Cobia Reference Manual.
Settings is for viewing and
modifying the measurement settings. Preferencesis for viewingand
adjusting personal preferences. Any settingchange that can affect the
measurement results will be shown in the status field (top ofscreen).
System Info gives detailed information about the Cobia, needed during
support. Power Offturns the Cobia off.
1.1.2 Keyboard Operation
Menu and On/Off button
If Power =Off: Press once to start the Cobia
If Power =On: Press once to display the menu. Press
and hold to switch offthe Cobia
In Menu view: Closes the menu
Up and Down arrow buttons
In Single view: Changes the active parameter shown
In List view: Changes the highlighted (active)
parameter
In Menu view: Moves the marker
Right arrow button
In Single view: Switches the display to the List view
In Menu view: Activates the marked menu item
In the Settings or Preferences menus: Changes the set
value (displayed in yellow)or activates the menu
item

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
Left arrow button
In List view: Switches the display back to the Single
view
In Menu view: switches the display back to the
previous menu or screen
2 Getting Started
2.1 Before Starting the Cobia for the First Time
Before usingthe Cobia for the first time, make sure the unit is charged. See
Charging the Battery .
2.2 Charging the Battery
The battery can be charged in two ways:
· Via the USB cable connected to a PC.
· Via the USB cable connected to the included
external charger. This is the fastest way of
charging.
These chargingmethods are indicated by two separate screen indicators.
For charging times, see section Battery Charging Details .
9
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3 Performing a Measurement
3.1 Measuring with the Internal Detector
The pictures below show how to position the Cobia in different types of X-
ray units.
A=Radiography X-ray unit B =Dental X-ray unit
1. Start the X-ray unit.
2. Prepare the X-ray unit for the testing ofdesired settings.
3. Start the Cobia.
4. Select the radiation quality if needed. See the section Select Radiation
Quality.
5. Place the Cobia under the X-ray source at a clinically relevant distance
(typically 50 -100 cm from the source).
6. Make sure that the radiation field covers (at least)the entire Cobia
detector surface.
7. Start an exposure.
8. When the measurement is over, the recorded values are by default
cycled on the Cobia display. Press the right arrow button to go to
the List view for an overview.
9. Compare the parameters displayed by the Cobia with the test settings
for the X-ray unit.
10. Record the results.
11. To repeat, adjust the settings and start over from Step 6.

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
4 Maintenance
4.1 Scheduled Calibration
RTI recommends that the Cobia is calibrated every 24 months. Send your
Cobia to your local RTI distributor, who will send it to our service
department in Mölndal, Sweden, or New Jersey, USA. For contact details,
please see the back of this manual or the list of local RTI distributors on the
RTI website (www.rtigroup.com).
4.2 Updating the System
The Cobia system update can easily be done on any computer with support
for USB memories.
Below is a step-by-step guide for when using a computer with Windows OS,
but the procedure can be done on a computer with any OS, just as long as it
has a USB port.
1. Start by downloading the latest versions from
www.rtigroup.com/downloads, using a web browser.
2. On a Windows PC, start a File Explorer window (WIN+E)and unpack the
downloaded Cobia Update zip file to a local drive.
3. Start the Cobia and connect the cable between the PC and the Cobia.
4. On the Cobia, press the menu button and enter the “System Info”
menu.
Make sure that the update file contains a newer system
version than already present in the system.
5. Ifso, press and hold down the right arrow button for approximately
4 seconds to start the update mode. See images below.
6. After a short while, a USB memory device named COBIA(as shown
below)will appear in the File Explorer on the PC, and the Cobia display
will show “Waitingfor update file”. Now, drag-and-drop the unpacked
updater file (.cobia)from the PC local drive usingthe File Explorer to
the USB device named COBIA.

Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
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7. Acounter will now start on the Cobia display duringthe resource file
update procedure. It will take a few minutes. When the update is
completed the followingscreen will appear:
8. Press any key to launch the updated Cobia firmware.
After the update, you may want to change the language ofthe Cobia user
interface. You will find this setting by pressingthe menu button , and
then selecting User Preferences.

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
5 Technical Data
5.1 Battery Charging Details
The section Charging the Battery describes how the Cobia battery is
charged.
On the front face of the Cobia, there is an orange battery charging
indicator, marked .The indicator is lit when the battery is actively
charging. It will gradually turn offwhen the battery is getting closer to being
fully charged. Charging is also possible when the Cobia is powered off.
Approximate battery running and charging times:
Capacity
Running
time
Chargingtimes (from empty)
Using Power supply
USB, Cobia ON
USB, Cobia OFF
50 %
7½h
1½h (90 min)
3½h
17 h
80 %
12 h
2½h (150 min)
6 h
27 h
90 %
13½h
3¼ h (195 min)
7 h
30 h
100 %
15 h
5 h (300 min)
8½h
32 h
5.2 Battery Warnings
Warnings are shown when the battery is starting to run low (see below).
After the second warning, the system can suddenly shut down due to an
empty battery.
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6 Troubleshooting
If you experience any problems with the Cobia, please go through the
followingsteps before contacting your local RTI distributor or the producer
RTI.
A. Check the RTI website for system updates (www.rtigroup.com).
B. Go through the checklist below.
TheCobia doesnot start:
If the Cobia does not start, try the following:Connect the charger and
retry starting the Cobia. Ifit does start, then the battery was too low to
start. Ifthis does not help, try resetting the Cobia as described below.
TheCobia indicatesa doselower than anticipated:
If the dose readings are too low or if the irradiation times for short
exposures are too short, check that the measurement is performed so
that the radiation is perpendicular to the Cobia detector surface. Please
also make sure that the entire surface is evenly irradiated.
TheCobia gives"Field Error":
The Cobia detector surface needs to be properly irradiated. Please make
sure that the entire surface is irradiated, and that nothing is blockingthe
radiation.
How do I reset theCobia?
There is a reset hole on the bottom face of the Cobia, marked RST. Insert
the end of a paper clip or similar to reset the Cobia.
7 Standards and Compliances
For standards and compliances, please see the Cobia English Reference
Manual.

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
7.1 Intended Use of the Cobia
Accessory to diagnostic X-ray equipment to be used as an electrometer.
Together with external probes it is to be used for independent service and
quality control, as well as measurements of kerma, kerma rate, kerma
length product, kVp, tube current, exposure time, luminance, and
illuminance within limitations stated below.
If installed according to accompanying documents, the product is intended
to be used together with all diagnostic X-ray equipment except for:
· therapeutical X-ray sources.
· X-ray equipment with tube potential below 18 kV.
· X-ray equipment on which the instrument cannot be mounted properly,
e.g. equipment where the beam field size is narrower than the active
part ofthe detector.
· specific types of X-ray equipment listed in the instructions for use or in
additional information from the manufacturer.
With the X-ray installation in stand-by conditions without patients
present, the product is intended to be used:
· to provide the operator with information on radiation beam parameters
that might influence further steps in an examination but not an ongoing
exposure.
· for assessing the performance ofthe X-ray equipment.
· for evaluation ofexamination techniques and procedures.
· for service and maintenance measurements.
· for quality control measurements.
· for educational purposes, authority supervision etc.
The product is intended to be used by hospital physicists, X-ray engineers,
manufacturer's service teams, and other professionals with similar tasks
and competencies. The operator needs a short training to be able to use
the product as intended. This training can be achieved either by careful
study ofthe manual, studies ofthe built-in help function in measurement
software or, on request, in a short course ordered from the manufacturer.

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The product is intended to be used inside X-ray rooms ready for clinical use
and can safely be left switched on and in any measuring mode in the
vicinity of patients.
The product is NOTintended to be used:
-for direct control of diagnostic X-ray equipment performance during
irradiation ofa patient.
-so that patients or other unqualified persons can change settings of
operating parameters during and immediately before and after
measurements.

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
NOTES

Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
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NOTES

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Cobia Smart R/F & Cobia Dental Intraoral - User Manual v2019.12A
NOTES

Contact Information -
World Headquarters
RTI Group AB
Flöjelbergsgatan 8 C
SE-431 37 MÖLNDAL, Sweden
Phone:[phone]
Fax: [phone]
Sales: [e-mail]
Support: [e-mail]
Service: [e-mail]
Web: www.rtigroup.com
Contact Information -
US Office
RTI Electronics Inc.
33 Jacksonville Road, Bldg. 1,
Towaco, NJ 07082, USA
Phone: [phone]
(Int. [phone])
Fax: Int. [phone]
Sales: [e-mail]
Support: [e-mail]
Service: [e-mail]
Web: www.rtigroup.com
RTIarticle number:4760.000537-EN