Cobia Flex R/F User Manual 2015.1A
Contents
1. 16 4 2 Updating the System sssmmmnnnnnnnnnnnnnnnnzzznnnnn 16 5 Technical Data zus aaa 18 5 1 Battery Charging Details nn 18 5 2 Battery Warnings semm eenennnnnnnnnnnznzznennnzznnzz nn 18 5 3 Communicating with a PC oo cccccsssssseeneeeeeessee 19 6 Troubleshooting nn 19 7 Standards and Compliances 20 71 Intended Use of the Cobia 20 Cobia Flex R F User Manual v2015 1A 1 Product Overview BOTTOM VIEW Cobia Flex R F User Manual v2015 1A 10 11 12 13 14 15 16 Name Display Up arrow button Down arrow button Left arrow button Right arrow button Menu and On Off button Positioning marker Measurement surface Status indicator External detector input Battery charging indicator Optional MAS connector Micro USB connector Measurement center marking Product label Reset hole Description Cobia display See section Screen Description 6 Used to move up in the user interface See section Keyboard OperationL 8 Used to move down in the user interface See section Keyboard OperationL 8 Used to move left back in the user interface See section Keyboard OperationI 9 Used to move right or make a selection in the user interface See section Kevboard Operation 9 Used to start and power off the Cobia and displav the2. LNDAL Sweden Phone 46 31 7463600 Fax 46 31 270573 Sales sales rti se Support support rti se Service service rti se Web www rti se Contact Information US Office RTI Electronics Inc 33 Jacksonville Road Bldg 1 Towaco NJ 07082 USA Phone l 800 222 7537 Int 1 973 439 0242 Fax Int 1 973 439 0248 Sales sales rtielectronics com Support support rtielectronics com Service service rtielectronics com Web www rti se RTlartice number 4760 001206
3. resulting in the display of additional 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 Ifa 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 Parameters from MAS or EXT are marked accordingly Note The available parameters may vary depending on the model of the Cobia The example picture shows a pulsed measurement with Cobia Flex R F kV amp Dose ee mu Cobia Flex R F User Manual v2015 1A W AL bReset Measurement Prev Measurements Settings Preferences Svstem Info Power Off Main Menu view The Menu view displavs a setofavailable functions selected bv pressing the right arrow button Reset Measurement zeroes and resets the meaurement Prev Measurements recalls the results ofearlier measurements Settings is for viewing and modifying the measurement settings Preferences is for viewing and adjusting personal preferences Any setting change that can affect the measurement results will be shown in the status field top of screen System Info gives detailed information about the Cobia needed during support Power Offturns the Cobia off When using an external detector or probe there will be an extra menu item Ext Detector that displays detector
4. during the resource file update procedure It will take a few minutes When the update is completed the following screen will appear Press any key to restart 8 Press any key to launch the updated Cobia firmware After the update you may want to change the language of the Cobia user interface You will find this setting by pressing the menu button and then selecting User Preferences Cobia Flex R F User Manual v2015 1A 17 13 5 Technical Data 5 1 Battery Charging Details The section Charging the BatteryL9 describes how the Cobia battery is charged On the front face of the Cobia there is an orange battery charging indicator marked IR The indicator is lit when the battery is actively charging It will gradually turn off when 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 Charging times from empt Running time Using Power supply USB Cobia ON USB Cobia OFF h Capacity i 17h 0 h i 7h 30h 5 2 Battery Warnings Warnings are shown when the battery is starting to run low see below Afterthe second warning the system can suddenly shut down due toan empty battery I Battery is low I Very Low Level 15 min remaining Powering off Cobia Flex R F User Manual v2015 1A 5 3 Communicating with a PC The Cobia Flex R F includes a user friendly communication pr
5. is available in the guide for Measuring with an External DetectorL111 Cobia Flex R F User Manual v2015 1A 3 4 Measuring with the Optional Internal MAS The description below describes how to use the optional internal MAS cable with the Cobia Flex R F MAS model Users of Invasive mAs meters must be aware of the potential damage to generators and electrical hazards to human in the event of improper connection or failure of any part of the meter circuit The Cobia MAS is intended for use only by those skilled in the calibration and repair of X ray machines Please read the section Tube Current Safety PrecautionsL115 for more safety rules CAUTION 1 Prepare the unit that is to be tested 2 Connect the Cobia MAS Cable as described in the section Connecting the MAS Cablel 14 3 The tube current parameters are added to the List view as shown below Cobia Flex R F User Manual v2015 1A 13 14 4 Startan exposure 5 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 All measurement results from the internal MAS input are marked 325 2 mA 6 Record the results 7 Torepeat change the settings and start over from Step 5 3 4 1 Connecting the MAS Cable Please be aware that high voltage may occur ifthe mAs probe is not properly connected Read the Tube Current Safety PrecautionsLJ 15 section before starting
6. MAS and before the X ray generator is switched on again Important e Do NOT connect the Cobia Internal MAS to the filament current circuitry The Cobia Internal MAS is only intended for measuring the tube mAand Cobia Flex R F User Manual v2015 1A 15 mAs e DoNOTuse the Cobia Internal MAS in contact with a patient e DoNOTuse the Cobia Internal MAS on a circuit with a voltage higher than 90 V DC or 600 VAC e Do NOTexpose the instrument to direct sunlight extremes of temperature and humidity or dew fall e Do NOTexceed the maximum tube current input 1000 mA Note The Cobia Internal MAS is intended for the servicing and quality control of diagnostic X ray equipment It is not intended for use during diagnostic examinations of patients RTI Electronics ABtakes no responsibility forthe misuse ofthe Cobia Internal MAS or use together with products that the Cobia Internal MAS is not intended for RTI Electronics AB assumes no responsibilitv in the event of customers not following these safetv precautions 4 Maintenance 4 1 Scheduled Calibration RTI recommends that the Cobia is calibrated everv 24 months Send vour Cobia to vourlocal RTI distributor who will send it toour service department in M lndal Sweden or New Jersey USA For contact details please see the back ofthis manual or the list oflocal RTI distributors on the RTI website www rti se 4 2 Updating the Svstem The Cobia svstem update can easilv b
7. PC The charging is not disturbed by communication between the PC and the Cobia e Via the USB cable connected to the included external charger Cobia Flex R F User Manual v2015 1A 3 Performing a Measurement 3 1 Measuring with the Internal Detector The pictures below show how to position the Cobia in different types ofX ray units A Radiography X ray unit B Dental X ray unit Start the X ray unit Prepare the X ray unit for the testing of desired settings Start the Cobia Place the Cobia under the X ray source at a clinically relevant distance typically 50 100 cm from the source 5 Make sure that the radiation field covers at least the entire Cobia detector surface 6 Start an exposure 7 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 8 Compare the parameters displayed by the Cobia with the test settings for the X ray unit 9 Record the results 10 To repeat adjust the settings and start over from Step 6 BRB WN k Cobia Flex R F User Manual v2015 1A 3 2 Measuring with an External Detector The description below describes how to use an external detector with the Cobia 1 Start the X ray unit and start the Cobia 2 Ifnot already attached attach the external detector 3 Set up the external detector unit For an external dose probe place the detector ata clinicall
8. User Manual Cobia Flex R F English v2015 1A NOTICE RTI Electronics AB reserves the right to make changes to the Cobia Flex R F and the information in this user manual without prior notice RTI Electronics 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 2015 by RTI Electronics AB All rights reserved The content of this document may not be reproduced for any purpose other than supporting the use of the product without prior permission from RTI Electronics AB User Manual Downloads You can download user manuals here www rti se downloads Cobia Flex R F User Manual v2015 1A Contents 1 Product Overview nn 4 1 1 User Inter ACC ne 6 1 1 1 Screen Description u te ee 6 1 1 2 Keyboard Operation 8 2 Getting Started nern 9 2 1 Before Starting the Cobia for the First Time 9 2 2 Charging the Battle u nn 9 3 Performing a Measurement nn 10 3 1 Measuring with the Internal Detector 10 3 2 Measuring with an External Detector 0044 11 3 3 Measuring with a Light Probe ooo 12 3 4 Measuring with the Optional Internal MAS 13 3 4 1 Connecting the MAS Cable 14 3 4 2 Tube Current Safety Precautions ss mnnnnenn 15 As Maintenance iii te ene a aaa 16 4 1 Scheduled Calibration
9. e done on anv 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 longas it has a USB port 1 Start by downloading the latest versions from www rti se downloads usinga web browser 2 Ona Windows PC start a File Explorer window WIN E and unpack the Cobia Flex R F User Manual v2015 1A LA downloaded Cobia Update zipfileto a local drive Start the Cobia and connect the cable between the PC and the Cobia On the Cobia press the menu button and enter the System Info menu Make sure that the update file contains a newer svstem version than alreadv present in the svstem Ifso press and hold down the right arrow button for approximately 4 seconds to start the update mode See images below W AL 40 W AL Reset Measurement Type Prev Measurements Settings S N Preferences Product v System Info Updater v Power Off Firmware v System v i G U 6 Aftera short while a USB memory device named COBIA as shown below willappearinthe File Explorer on the PC and the Cobia display will show Waiting for update file Now drag and drop the unpacked updater file cobia from the PC local drive using the File Explorer to the USB device named COBIA ME Computer amp System C wm KINGSTON D Acounter will now start on the Cobia display
10. information and settings as described below gt R1 W 3 mm AL R2 W 23 mm Al R5 RQR Type Dose Probe l Select External Detector Calibration When an external detector containing more than one calibration is connected to the Cobia a selection screen will be shown left For later calibration changes the selection screen is also available via the Menu 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 off the 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 Cobia Flex R F User Manual v2015 1A Right arrow button In Single view Switches the displaytothe List view In Menu view Activates the marked menu item Inthe Settings or Preferences menus Changes the set value displayed in yellow or activates the menu item Left arrow button In List view Switches the display back to the Single view In Menu view switches the display backto the previous menu orscreen 2 Getting Started 2 1 Before Starting the Cobia for the First Time Before using the Cobia for the first time make sure the unit is charged See Charging the Batter 19 2 2 Charging the Batterv The batterv can be charged in two wavs e Via the USB cable connected to a
11. ot to move the detector while attached to the Cobia To reset false readings use the Reset Measurement on the menu How do reset the Cobia There is a reset hole on the bottom face of the Cobia marked RST Insert the end ofa paperclip or similar to reset the Cobia 7 Standards and Compliances For standards and compliances see the Reference Manual 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 wellas measurements of kerma kerma rate kerma length product kVp tube current exposure time luminance and illuminance within limitations stated below Ifinstalled according to accompanying documents the product is intended to be used together with all diagnostic X ray equipment except for e therapeutical X ray sources e X ray equipment with tube potential below 18 kV e 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 of the detector e specific types of X ray equipment listed in the instructions for use orin additional information from the manufacturer With the X ray installation in stand by conditions without patients present the product is intended to be used e to provide the operator with information on radiation beam parameters that might influence further steps in an examination bu
12. otocol allowing communication between the Cobia Flex R F and a computer including the Ocean version 2015 or newer software The protocol can also be integrated into other software The protocol is described in detail in the Cobia Reference Manual 6 Troubleshooting If you experience any problems with the Cobia please go through the following steps before contacting your local RTI distributor or RTI Electronics A Check the RTI website for system updates www rti se B Go through the checklist below The Cobia does not start Ifthe Cobia does not start try the following Connect the charger and retry starting the Cobia If it does start then the battery was too low to Start If this does not help try resetting the Cobia as described below The Cobia indicates a dose lower than anticipated Ifthe 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 The Cobia 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 blocking the radiation The external detector gives false readings Cobia Flex R F User Manual v2015 1A 19 20 The external detector cable is verysensitive when usingcertain probe types Try n
13. svstem menu See section Kevboard OperationI 8 Marks the position of the radiation detector s active volume below the measurement surface Circular entrance surface for the measurement sensors Indicates functional status of the Cobia Used to attach external measurement detectors or probes The orange batterv charging indicator is lit when the batterv is charging See section Batterv Charging Details 18 Used to attach invasive MAS cable selected models See section Connecting the MAS Cablel 14 Used both to charge and to connect the Cobia to a computer See sections Charging the BattervL 9 Updating the SvstemD 16 and Communicating with a PO 19 Marks the center position of the radiation measurement on the bottom side Displays detailed information about the product and model on the bottom side Used to do a hardware reset of the Cobia Marked RST on the bottom side Cobia Flex R F User Manual v2015 1A 1 1 User Interface 1 1 1 Screen Description Single view B Listview gt aoe Menu view SO Astatus field is displayed at the top ofthe screen The left side of the field shows the Radiation or Measurement Quality Code and a description of the active range 1 The middle part of the 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 s
14. t not an ongoing exposure e for assessing the performance of the X ray equipment e for evaluation of examination techniques and procedures e forservice and maintenance measurements e for quality control measurements Cobia Flex R F User Manual v2015 1A e foreducational 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 of the manual studies of the built in help function in measurement software or on request ina short course ordered from the manufacturer 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 Cobia Flex R F User Manual v2015 1A 21 NOTES 22 Cobia Flex R F User Manual v2015 1A NOTES Cobia Flex R F User Manual v2015 1A 23 Contact Information World Headquarters RTI Electronics AB Fl jelbergsgatan 8 C SE 431 37 M
15. tandard values 2 The right side of the field displays an icon for external power supply and an indicator for the battery level 3 A simple user guide is displayed at the bottom ofthe screen For each view the buttons that are functional in this view are shown together with a short text describing the function of the 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 the internal tube current socket MAS or an external detector EXT a corresponding indicator will appear in the leftmost side of the unit field not shown Cobia Flex R F User Manual v2015 1A 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 amp Dose Located to the left of the 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 during Restart 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
16. the measurement 1 Power down the X ray generator and wait for the recommended amount of time to allow for generator discharge according to the generator manufacturer s specifications 2 Remove the jumper from the mAs measuring socket of the generator 3 Connect the Cobia MAS Cable to the mAs measuring socket using the safety cables included observing the polarity see picture below If necessary use the adapters included Cobia Flex R F User Manual v2015 1A High Voltage X ray Transformer II mAs measuring socket i 333 i Cobia MAS Cable i y 63 ray tube N CH l 1 Tube current ground return line Ge 4 Connect the other end of the Cobia MAS Cable to the MAS input ofthe Cobia Flex R F Caution Do not forget to replace the mAs socket jumper when removing the Cobia MAS Cable 3 4 2 Tube Current Safety Precautions Only use the Cobia Internal MAS if you are authorized and skilled to make invasive measurements using the X ray generator mAs measuring socket Please be aware that high voltage may occur on the Cobia Internal MAS if the cable connection to the X ray generator mAs socket is broken Always wait approximately one minute after switching off the X ray generator before connecting or disconnecting the cables between the Cobia Internal MAS and the mAs measuring socket Always check that the short circuit path jumper normally connected to the mAs measuring socket is reapplied after using of the Cobia Internal
17. y relevant distance typically 50 100 cm from the source as described by the manual of the detector 4 Attach the external detector to the Cobia 5 lf needed select among the available calibrations shown below et LIRE PRI W 3 mm Al R2 W 23 mm AL R5 RQR Type Dose Probe S N 13021234 6 Adjust the X ray unit to the desired settings 7 Start an exposure or other signal 8 When the measurement is over the recorded values are by default cycled on the Cobia display Press the right arrow button to goto the List view All measurement results from the external input are marked with an EXT symbol 9 Record the results 10 To repeat start over from Step 6 Cobia Flex R F User Manual v2015 1A 11 3 3 Measuring with a Light Probe In depth instructions on how to use a Light Probe are found in the separate Light Probe manual Attach the light probe monitor adapter pictured below left for measuring the luminance ofa monitor or light box or the lux adapter below right for measuring illuminance ambient light Position the probe inthe desired location and read the result When using the luminance adapter the recorded value is automatically saved to the log function when using the shutter button For illuminance measurements the down arrow button has to be pressed for a value to be saved to the log Please note that there is no need to perform a reset before using the Light Probe More information
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