HAVex User Manual
Contents
1. Download Pin Number Description 1 Vcc 2 D 3 D 4 Not Connected 5 Ground Input Signal Voltage Mode 3 Channel Input Wiring Configuration Lemo Socket EGG OB 305 CLL Mating Lemo Plug FGG OB 305 CLADS52Z External View Transducer Input Socket Pin Number Description 1 5V 2 Analogue Ground 3 X Axis Input 4 Y Axis Input 5 Z Axis Input Battery Recharge Powered from a nominal AC supply using Mascot 2116 2 cell battery charger Centre Terminal OV Outer Terminal V Page 59 Batteries Real Time Clock Life Expectancy Main Life Expectancy Min Battery Level CR1220 Lithium Battery Factory Fitted Approximately 2 years 2100mAh NiMH Battery Pack 10 hours continuous use approx 1 8V DG Page 60 EC Declaration of Conformity The CE marking of the Casella HAVex Vibration Meter indicates compliance with the EMC and Low Voltage Directive The C Tick marking of the Casella HAVex Vibration Meter indicates compliance with EMC requirements for Australia and New Zealand We Casella declare that the HAVex Vibration Meter has in accordance with the following Electromagnetic Compatibility Directives SI 2005 281 2004 108 EC been designed and manufactured to meet the following tests EMC Emissions EC 61000 6 3 2007 A1 2011 EN61326 1 2006 CISPR 22 2008 EN55022 2006 A1 2007 FCC Rules Part 12. Single File o cccccnconocooncnnononannns DISC AIIM E sii A E AE Download Recordings E EC Declaration iaa E 61 Electrical Noi ii e nee ee heo i eder 53 EXDOSUETG tancia IRIS eee geo bie ADOS a EA E d nus ERR MIRRORS REGE 47 Ac e LEER 47 Limit LEVEL estt ett eee A T 47 Poltica IRE EETEER IRR do EXOEIEETIONPPRIROM ip SUPR iei 37 47 F File Naming Files 25 eee Playback Frequency Weighted Filters Hatid ATI TA Table Data enema Hn Frequency Weightings sess ii ii nnne nnns FUNCTION EQUATIONS eee ee ete ie xe aste thee didas G Generali xxu EAN 33 Getting Started io AA REL A RE Ure en 15 Keypad La OU e 17 H HAVex USB Drivers Vibdata LITE a 22 i A dea ue Ein eda e heo aene I Indicator Overload d Er rb velie bre re be Te A het 49 Under Range error er erae rre rne oe evene des 48 InformmatioD o ee ede cada 38 Input Electrica alii res en e S Eid a rt Ris 56 Maximum Electrical Input Level 56 Wiring Configurati0N ccccononoooonnnncnnnononnnnnnncnnnnnonnnnnnnccnnnnnnnnnnnccnnnnnnos 59 Instrument Details Introduction K SEN TO 17 L LANUS ia ac cchences teas 35 Level Range iere oo eR e aen ttes 54 Limit Eevel i eoe d EEG RUE HARE UP REG B QE E 47 Limit Levels FAA eter eere RR reo AR NN 47 M Measuring RQaNg8S cccccccccnnncncnononononononnnnnonononnnnnnnnnnnnnnnnnnnnnnnononononananenenoss Measuring Vibration MEMON erc Menu Delete Single Fil
3. current selection Use the key to highlight the required option and press P to select Press o to return to the previous screen without making a selection Exposure points were developed in the UK by the Health and Safety Executive such that combinations of vibration magnitude and exposure time are given in Exposure Points rather than in values in m s Exposure points may be easier to work with as they can simply be added together Page 37 Results Select this option to determine if your HAVex instrument should display calculated results after ending a recording 14 32 02 03 15 Red Tick indicates current selection Use the key to highlight the required option and press D to select Press Q to return to the previous screen without making a selection Information Select this option for instrument details 14 32 02 03 15 Page 38 Calibration Select this option to calibrate your HAVex instrument using accelerometer sensitivity figures or using a calibrator 14 32 02 03 15 Use the key to highlight the required option and press P to select Press to return to the previous screen without making a selection Measurement Select this option to choose between calibrating your HAVex instrument using a calibrator and selecting the output level of the calibrator 14 32 02 03 15 Use the key to highlight the required option and pr
4. 52 CHAPTER Sx foie cates ental iaa 53 Technical SpecifICSbion eet epe capti o ualeat lp dup 53 Applicable Standards 53 Noise Floors Normal Operating Mode Overload amp Under Range Triggering Points Level Ranges sees 04 EreguerneyNVelahitirigs s re etit ee aid eat di ele o e 54 ACC IM m red Electrical Signal Input e Maximum Electrical Signal Input For No Damage 56 Environmental Stabilization Time sss 56 Warm up Time 56 Settling Time Temperature Operating Range Effect of Air Temperature Effect of Surface Temperature sd Real Time Glock ica aaa OA TAANE 57 Size and Weight 58 Connections 58 AC Output 58 Wiring Configuration 4 Pole Jack Socket 3 5mm 98 Downld8dz xe eit deo stor term n 09 Wiring Configuration Micro USB B Socket 59 Input Signal 59 Wiring Configuration Lemo Socket EGG OB 305 CLL s Battery Recharge uu o tas 99 Batteries wo EC Declaration of CDPD IA AI DAA AAA 61 CHAPTER TDi 62 Function EqUatlOfis eaae ea aa 62 CHAPTER Tios diia 65 Customer Instrument Support esssseeeee tentent tentent 65 Warranty and After Sales Service B5 Disclaifrigr sette 867 Instr rnent DetallS eee Ri AN 67 INDEX QT 68 Table of Figures Figure 1 Recommended Axes for Hand Arm Vibration 18 Figure Key
5. Acceleration Metric Acceleration g T total integration time seconds a ta instantaneous acceleration value ta time seconds ms 2 ew ta d ta Running rms Acceleration t d Metric instantaneous time seconds 0 integration time of the measurement 1 second a ta instantaneous acceleration value ta time seconds Arms ee i a ta d ta g 8807 lo W g Running rms t 0 Acceleration 9 t instantaneous time seconds 0 integration time of the measurement 1 second a ta instantaneous acceleration value ta time seconds Page 62 Acceleration vSum J 9 12 z Vector Sum X X Axis Aeq HARM Y Y Axis Aeq Z Z Axis Aeq Peak Peak The peak level of the weighted instantaneous acceleration over the measurement period Maximum Amax The maximum Arms level reached over the rms Level measurement period Points 5m 2 Points 5m 223 289839 100 Aeq Acceleration Metric EAV Exposure Action Value 2 5 m s Points 15m Points 80m Aeq Y 0 25 Points 15m 100 Aeq Acceleration Metric EAV Exposure Action Value 2 5 m s Aeq 2 D 5 Points 30m EV Us 100 Aeq Acceleration Metric EAV Exposure Action Value 2 5 m s Points 1h Points 1h GPE NV Eav 8 Aeq Acceleration Metric EAV Exposure Action Value 2 5
6. Menu Structure Whilst in Stop State press a to open the Main Menu This key is also used to step back to the previous screen With the Main Menu screen open use to scroll down the list of available options 14 32 02 03 15 14 32 02 03 15 If the instrument has no files saved then the Files option is not selectable Press on to select the required option Note that a recording cannot be started from within the Main Menu Some options may also have further sub menus where further options are available Again use the key to scroll through the available options The complete menu structure is shown below Range Files Open All Open Today s Open 7 Days Delete File Delete All Files Page 22 Settings Brightness 20 to 100 O Metric Time File Naming on English UK English US Francais Deutsch Italiano Portugu s Brasil Pyccku x 3 Page 23 Exposure Configuration Information Calibrate Measurement Calibration Sensitivity Page 24 Menu Options Each Menu option is described fully below Range Select this option to change the measuring range of your HAVex instrument 14 32 02 03 15 Red Tick indicates current selection A Use the key to highlight the required option and press om to select The range will be selected and the previous menu screen will be displayed Range details ar
7. digital recursive filters infinite impulse response Analogue to Digital Converter amp Microcontroller ADC Word Length 24 bits Sampling Rate 16kHz Processor Operating Frequency 25MHz max Displayed Measurement Resolution High range 0 01 m s up to 99 99 0 1 m s 100 0 2000 0 m s Low range 0 001 m s up to 9 999 0 01 m s 10 00 200 00 m s Display OLED Module 160x128 pixels with 262 144 colours Refresh Rate lt 500mS Displayed parameter at each update interval is the value at the time of the update interval Page 57 Memory 4Mb On board FLASH allowing up to 1975 recordings to be saved Overload Positive overload warning when the input circuit saturates See Overload Under Range Triggering Points for overload triggering points Size and Weight Dimensions H 1 17 mm without Cable x W 78mm x D 24mm Weight 182g approximately including batteries Connections AC Output Unweighted Short circuit Protected Load Impedance gt 10k recommended AC Output Voltages Range Output Voltage rms at full scale 1 5dB LOW 1000mV HIGH 1000mV Wiring Configuration 4 Pole Jack Socket 3 5mm AC Output Pin Number Description 1 Analogue Ground vO 1 2 X Axis Output SEN e ee um 83 A o 3 Y Axis Output y E 4 Z Axis Output Page 58 Download USB 1 0 or 2 0 compatible Wiring Configuration Micro USB B Socket
8. key is also used to step back to the previous screen With the Main Menu screen open use scroll down the list of available options 14 32 02 03 15 14 32 02 03 15 If the instrument has no files saved then the Files option is not selectable Press D to select the required option Note that a recording cannot be started from within the Main Menu Some options may also have further sub menus where further options are available Again use the key to scroll through the available options The menu structure is described in detail in Chapter 5 Please be aware that your HAVex instrument has a built in battery saving function that automatically dims the display Any key can be pressed to exit this power saving function See Auto Dim in Chapter 5 for more details Page 16 Keypad Layout Please note that some keys have a dual function CASELLA Scroll Serial No 107909 OK Record Stop Main Menu Back Power On Off Figure 2 Keypad Layout Page 17 Powering Your HAVex Meter Your HAVex meter is powered from a Casella rechargeable 2 4V NiMH battery pack The battery pack employs the latest battery technology for maximum battery life between instrument uses The battery compartment is located on the underside of your instrument Open the battery door by sliding the cover downwards towards the bottom of the instrument The cover can now be removed exposing the battery compartm
9. overload condition for the process being monitored Where high levels of vibration are encountered the meter may register an overload and in these circumstances the meter will display that this has occurred In such cases you will need to select the high range to accommodate the higher peak levels and if Overload conditions are still occurring on the high range it may be necessary to use an impact filter on the accelerometer If the vibration levels are too low for the range selected then the meter will display an under range condition Under these circumstances you will need to select the low range if possible For more detailed information see Under Range amp Overload Conditions Frequency Weighting Filter The human body s discomfort level to vibration alters depending on the vibration frequency and where the vibration is in contact with the body Your HAVex meter therefore has the following frequency weighting filter which is applied to the measured vibration signal using a fast processor for superior accuracy Hand Arm Vibration Filter Description Always used for Hand Arm Vibration measurement in the X Y Wh A and Z Axis Wh Filter Frequency Response 0 10 1 00 10 00 100 00 1000 00 10000 00 Gain dB Frequency Hz Page 13 Under Range amp Overload Conditions Under Range Condition An under range condition occurs when the vibration level is equal to or lower than the bottom of the current r
10. the mass of the vibration source and will inevitably slightly alter the vibration emitted from the device it is therefore recommended to keep the mass of hose clips or clamps to a minimum Other mounting possibilities to mount the accelerometer to the vibration source are tapping a stud into the vibration source and attaching the accelerometer to the stud Alternatively the stud may be adhered to the device rather than tapped with an adhesive that dries rigid Casella can supply a glue and stud pack if required order code M104012 See Accessories for more options Page 11 Vibration Direction For Hand Arm vibration the three axes being measured can be measured in any orientation however it is recommended that the suggested axes indicated in the figure below are used f this is not possible then choosing other axes orientation is permissible and will not affect your measured data In all cases it is strongly recommended to make notes on the axes used relative to the vibration source This information will be required if vibration control is to be implemented on the vibration source Figure 1 Recommended Axes for Hand Arm Vibration Page 12 Vibration Level In some environments high levels of vibration may occur Before you record measurements take the time to ensure you have selected the optimum range for the process being recorded The optimum range is generally the lowest range that can be selected that does not produce an
11. under range indicator UR is placed in red at the far right of each axis where the condition occurs Under Range Indicator The under range indicator remains on for a minimum of 2 seconds or whilst the under range condition remains For Vector Sum where cumulative figures are used the location of the under range indicator is as below The indicator on this screen identifies that at least one axis has at some stage gone under range Under Range Indicator Page 48 Overload Indicator Each axis on the HAVex has independent Overload indicators which are visible in Stop State Record State and Playback Unlike under range the overload condition is saved with the recording and is therefore also available in Playback The overload indicator OL is placed in red at the far right of each axis where the condition occurs Overload Indicator The overload indicator remains on for a minimum of 2 seconds or whilst the overload condition remains however during Stop State or Record State the overload indicator is latched on the following screens e Aeq e Vector It is possible to remove the latched overload indicator during Stop State by selecting Reset under Meter from the Main Menu The overload indicator cannot be reset during Record State or Playback For Vector Sum where cumulative figures are used and where Exposure Points are being displayed the location of the overloa
12. 15 Use the key to highlight the required file and press to open it If more than 5 files exist then use the key to scroll through the available recordings 14 32 02 03 15 Press to return to the previous screen without making a selection Page 27 Open 7 Days Select this option to show all saved recordings made in the last 7 days The recordings are listed by file name date and time order showing the most recent first Note that this option is not selectable if no recordings have been made in the last 7 days The file number and amount of recorded files are also shown in Red 14 32 02 03 15 Use the key to highlight the required file and press om to open it If more than 5 files exist then use the key to scroll through the available recordings 16 32 23 08 12 Press 6 to return to the previous screen without making a selection Page 28 Delete File Select this option to delete an individual file from the instruments flash memory Deleted files cannot be recovered The recordings on the instrument are listed by file name date and time order showing the most recent first All recordings will be available for selection and the file number and amount of recorded files are shown in Red 14 32 02 03 15 Use the key to highlight the required file and press P to delete it The selected file will be immediately deleted 14 32 02 03 15 If more than 5 files exist
13. 5 2003 Class B EMC Immunity IEC 61000 6 2 2005 EN61326 1 2006 Levels 4kV Contact 8kV Air RF EM Amplitude Mod IEC 61000 6 2 2005 Level 10 V m No performance or function degradation is noticeable whilst subject to electrostatic discharge or a c power frequency and radio frequency fields under any operating condition with the meter and no differences in radio frequency emissions are apparent between operating modes where appropriate Approved cables for use with the Casella HAVex meter to comply with these specifications Cable Order Code Length HAVex to PC USB 01ZL1108 01 1m The technical file for the above is maintained at Casella Headquarters hereby declare that the instruments named above have been designed to comply with the relevant sections of the above referenced specifications and that the above named instruments comply with all essential requirements of the specified Directives a M Rue Steve Tearle Head of Technical Services Casella Regent House Wolseley Road Kempston Bedford MK42 7JY March 2015 Page 61 Chapter 10 Function Equations The following table describes mathematically how the functions available on the HAVex Vibration Meter are calculated All calculations displayed are subject to rounding and or truncation Function Equation ms 2 T total integration time seconds a ta instantaneous acceleration value ta time seconds aw ta d ta
14. 9 supplying eminent figures including Darwin and Livingstone A lot has changed in our long history but what does remain is our commitment to reliable trustworthy and credible solutions Casella s aim is to enhance the long term health and quality of life for workers in high risk occupational sectors and to monitor the impact on the environment through innovative technology easy to use products and expertise that can be trusted For more information or to find out more about Casella please visit our website at http www casellasolutions com Note for Getting Started section please turn to Chapter 4 Precautions Only operate the instrument as described in this manual O These are precision instruments protect from shocks and physical extremes Ambient conditions for the operation of the unit are as follows Temperature 10 C to 50 C Relative Humidity 25 to 90 Protect the unit from extremes of temperature and humidity direct sunlight and air with a high salt or sulphur content O Always turn the unit off after use e Do not use any solvents or cleaning agents on the instrument Use only a soft dry cloth or a soft cloth lightly moistened with water when necessary e Do not allow any conductive objects such as wire or metal particles to enter the unit Donottry to disassemble the instrument or attempt any repairs as this will invalidate your warranty Take a note of the condition of the i
15. CASELLA HAVex Hand Arm Tri Axial Vibration Meter Operating Manual www casellasolutions com HAVex HARM Vibration Meter Operating Manual Published by Casella Casella UK Office Regent House Wolseley Road Kempston Bedford MK42 7JY Copyright O Casella 2015 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior permission of the copyright holder Printed in the UK RevB HB 2006 051 EL Thank you for purchasing the Casella HAVex Hand Arm Vibration Meter We hope that you will be pleased with the meter and the service that you receive from us If you do have any queries concerns or problems please don t hesitate to contact us UK Office Casella Regent House Wolseley Road Kempston Bedford MK42 7JY Tel 44 0 1234 844100 info casellasolutions com Or specifically for technical support please contact our dedicated product support line on Tel 44 0 1234 847799 Or visit http helpdesk casellameasurement com The manual is designed to give you an overview of vibration measurement and a more in depth guide to using the instrument A brief quick start field guide is provided with the instrument but a copy is available to download at http www casellasolutions com Casella prides itself on providing precision instrumentation since 179
16. Chapter 9 Technical Specification Applicable Standards ISO 8041 2005 Human Response to Vibration Measuring Instrumentation Noise Floors 2 Range m s rms Axis Low High X 0 002 0 02 Y 0 002 0 02 Z 0 002 0 02 Normal Operating Mode Fitted with Hand Arm accelerometer KD1010 Overload amp Under Range Triggering Points Points when calibrated with an accelerometer of sensitivity 10 0mV g Acceleration Metric m s RANGE UR OL LOW 0 050 200 0 HIGH 0 500 2000 0 Acceleration g RANGE UR OL LOW 0 0051 20 40 HIGH 0 0510 204 0 Page 53 Level Ranges Acceleration Metric Acceleration g LOW 0 05 200 m s LOW 0 0051 20 4g HIGH 0 50 2000 m s HIGH 0 051 204g Frequency Weightings Wh weighting as defined in ISO 8041 2005 Wh Filter Frequency Response 0 10 1 00 10 00 100 00 1000 00 10000 00 0 10 20 a 30 40 Ij 50 60 70 Frequency Hz Deviations re 80Hz in dB and tolerances required for a typical HAVex instrument Frequency Wh Tolerance Hz 1 0 2 2 00 2 0 2 2 00 4 0 2 2 00 8 0 1 2 12 5 0 0 1 20 0 0 1 40 0 0 1 80 REF 1 160 0 0 1 315 0 0 1 630 0 1 1 1000 0 2 2 2000 1 3 2 00 4000 6 1 2 Page 54 Accelerometer 10mV g Output Voltage 209 Oper
17. ange the meter is set to If this condition occurs then the UR Under Range indicator will be displayed on your instrument In such circumstances it is highly recommended to change to a lower range with a higher sensitivity as your meter will be out of specification The under range indicator will remain on for a minimum of 2 seconds or while the under range condition remains Placement of the under range indicator can be found under Under Range Indicator in Chapter 6 See Technical Specification for a complete list of Under Range triggering points Overload Condition An overload condition occurs when either the peak signal starts to exceed the signal handling capability of the specialised amplifier circuitry or if the vibration level exceeds the top of the selected range by 5 If the vibration source saturates the input circuitry or is 5 greater than top of the selected range an Overload condition occurs and an OL Overload indicator is displayed on your instrument If an overload condition occurs it is highly recommended to change to a higher range with a lower sensitivity as your meter will be out of specification The overload indicator will remain on for a minimum of 2 seconds or while the overload condition remains Please be aware that the selected frequency weighting may attenuate the displayed signal level below the overload triggering point but an overload can still occur This is because the overload operates from the unwe
18. ating Range 200g 0 3 to 10000 Hz Frequency Response 3dB Resonant Frequency gt 30kHz Weight 30 Grams Operating Temperature Range pbi id n s 0 18 C Thermal Sensitivity Coefficient 0 10 F Linearity 11 Electrical Noise Floor 0 003g pk Transverse Sensitivity 5 Maximum Shock 7000g pk Page 55 Electrical Signal Input Electrical signals at frequencies gt 2Hz can be applied to the HAVex instruments by interfacing a suitable signal generator with an output impedance of 8000 to the 5 pin Input Lemo Socket type EGG OB 305 CLL Each individual axis shall be subject to the following circuitry see Signal Wiring 5v Pin 1 R1 3K3 C1 siena 1000uF R2 SIGNAL GENERATOR SIGNAL TRANSDUCER INPUT SOCKET AGND AGND Maximum Electrical Signal Input For No Damage 5 Volts Peak to Peak Environmental Stabilization Time 30 minutes Warm up Time lt 2 minutes Settling Time It is recommended that a calculation settling period of 230 seconds is allowed for in any recording Temperature Operating Range 10 C to 50 C Page 56 Effect of Air Temperature Accuracy better than 5 over the range 10 C to 50 C Effect of Surface Temperature Accuracy better than 4 over the range 10 C to 50 C Real Time Clock Day Month Year Hour Minute and Seconds at 2ppm accuracy per day Digital Signal Processing Direct processing using
19. d indicator is as below The indicator on this screen identifies that at least one axis has at some stage overloaded Overload Indicator Page 49 Parameters The parameters that are recorded and displayed on your HAVex instrument are as follows lt Only available by downloading files Parameters measured as Acceleration are identified as Acceleration with a preceding A Brief descriptions of each parameter are given below and for full mathematical descriptions see Chapter 10 Function Equations Arms The Arms is the Wh weighted running RMS Root Mean Square acceleration value Aeq The Aeq is time averaged and Wh weighted acceleration value Amax The Amax is the maximum Arms level reached Peak Peak is the highest peak level of the Wh weighted instantaneous acceleration Vector This is the Vector Sum calculation from the Aeq Exposure The vibration exposure point system and associated daily exposure action and limits are based on the UK s Health amp Safety Executive s system where vibration magnitude and exposure time are given in exposure points rather than m s For hand arm vibration the EAV is a daily exposure of 2 5 m s A 8 and the ELV is 5 0 m s A 8 Page 50 Chapter 7 Downloading Saved Recordings to a PC Using the supplied software Vibdata LITE supplied Pro available separately it is possible to download the stored recordings on your meter t
20. e rre rere rene edet ere er nen 29 Open PR p 28 TN die toti ceterae e to eee ree tee Mure eese REN eaae 26 Open Toda iaa ana 27 SAM Sed eeaeee a aae Aa ie aaae ea n cons n POS catsverecaeadccncdestere Brightness Meter Calibration isen A eue ve i iai Galibratez xs eei t ee n ette Measurement GONPIGUTATION inire nr p P LR RR ERU EE Ee RR ETE ERSTE Exposure Show Results Information SURUCTULE oid ccicverecete cedecsnacensesnaDeganeevennea se ceceasien E E Men Options irrin ree ERR ERREUR a AA Brightness uere erre A eee ai Calibratez 3e e ee t aedi adv n LAN GUAR E E A A OAE E EE E EE Measurement SEAMOS EESE AEEA AE E EEA EE EE EA Show RESUIES cid ad SEN N NOSA aTe AE A A AT 53 o On Off Key LOCO E E A A ee 17 DN iii O cnet es EE a S 21 25 Open DE E E EE EE 28 A ER E N EEE NEEE AEE O 26 Pla back a veces Rete ote OR e te S 45 TOGay NA 27 Output Voltage Levels ronn eget niet as e ea bee tote ere aii Wiring Configuration Overload seo er erbe eie e eben de Reo a P Parameters noi o pi epe Ee EE ER bu re ERR ER bee iba dr oe ones 50 PlAY BACK bee eaten e e EEG EP bee ERE ERE REYEE 45 Power Battery Pack NE ete pho eee o ER t EIE e ees 60 Powering Your HAVex Meter occccccccccnnnnnnnnnnnnononononononnnnnononnnonononononononon 18 RMN aid ade diner 25 RanBe6s ii A Ai 54 Recharging the Battery Pack o cccccoconococac
21. e as follows Range m s 9 High 0 50 2000 0 051 204 Low 0 05 200 0 0051 20 4 Press to return to the previous screen without making a selection Page 25 Files Select this option to manage saved recordings on your HAVex instrument 14 32 02 03 15 l 14 32 02 03 15 If no files have been recorded today or in the Open Today s last 7 days then these options will not be selectable Use the key to highlight the required option and press to select Press to return to the previous screen without making a selection Open All Select this option to show all saved recordings on the instrument Recordings are listed by file name date and time order showing the most recent first The file number and amount of recorded files are also shown in Red 14 32 02 03 15 Use the key to highlight the required file and press oo to open it If more than 5 files exist then use the key to scroll through the available recordings 14 32 02 03 15 Press D to return to the previous screen without making a selection Page 26 Open Today s Select this option to show all saved recordings made today on the instrument The recordings are listed by file name date and time order showing the most recent first Note that this option is not selectable if no recordings have been made today The file number and amount of recorded files are also shown in Red 14 32 02 03
22. e top left hand corner and is where a recorded file is opened to be viewed on screen When Playback is started manually all parameters are available to view including Exposure Points even if Exposure Points are turned off Play Symbol amp Recording Time 00 02 01 Whft File Name if Entered Sample01 14 30 02 03 15 14 32 02 03 15 File Start and End Time Date Scroll through the available parameters using the key The parameters screens available whilst in Playback Mode are File Details Arms Aeq Peak Vector Exposure Exit Playback by pressing either Ge or P and the instrument is placed into Stop State Page 45 Show Results On When a recording is stopped and the option Show Results is turned on then the instrument will automatically enter Playback and display the recorded parameters Playback is identified by having a green play symbol in the top left hand corner Play Symbol amp Recording Time 00 02 01 Whnf File Name if Entered Sample01 14 30 02 03 15 14 32 02 03 15 File Start and End Time Date Scroll through the available parameters using the key The parameters screens available whilst in Playback Mode are File Details Arms Aeq Peak Vector Exposure Points EAV and ELV Only Available if Exposure is On Exit Playback by pressing either or and the instrument is placed int
23. emoval and Fitting The accelerometer for use with the HAVex produces a Voltage Output proportional to the signal being measured The table below shows the output voltage and specifications for the accelerometer where g is the acceleration due to gravity on the Earth s surface and is defined as 9 80665 ms Acceleration is measured in metres per second per second m s s which can be written as either of the following 2 e ms e m s Accelerometer Type HAVex Hand Arm Tri Axial Accelerometer M104009 Hand Arm 10mV g 200g 2 to 5000Hz 10 Page 9 Attaching Removing the Accelerometer On the accelerometer cable connector locate the orientation key and on the instrument locate the RED keying identification mark of the 5 pin Lemo socket Position the accelerometer cable so that the orientation key is in line with the RED mark and then gently push the accelerometer cable into the instruments socket To unlatch and remove the accelerometer cable gently pull the on the knurled part of the stem and pull the accelerometer from the instrument Do not twist the connector doing so will likely damage internal wiring which would not be covered under warranty Removal of the accelerometer can be achieved with the instrument powered on or off Page 10 Chapter 3 Measuring Vibration Hand Arm Vibration It is advisable to validate your instrument prior to and after taking measurements usi
24. ent and battery pack if fitted To fit a battery pack plug the battery pack into the connector and insert the battery pack at an angle as shown below Page 18 Push the raised end of the battery pack downwards as indicated until the battery pack sits comfortably in place Ensure battery cabling does not overlap or obstruct where the battery door is inserted Battery Indicator Your HAVex meter is equipped with a four stage battery level indicator and is visible in the top right hand corner of all screens With a fully charged battery pack the indicator with a full Green bar is displayed and as the battery pack discharges the relevant indicator is displayed The approximate values are 100 75 50 and 25 When the battery pack is below 10 it will flash Red indicating that the battery pack is flat and requires a recharge When the battery pack is below 4 it will automatically power the unit down and save any data if the instrument is in Record State Page 19 Recharging the Battery Pack With a battery pack inserted and your instrument switched off plug your supplied charging unit into the DC socket indicated below The HAVex instrument will not operate while the battery pack is charging and will immediately switch off when the charger is plugged in to the DC socket even ifthe charger is not switched on This is normal If the unit switches off due to the charger plug being inserted then no settings or reco
25. ess to select Press d to return to the previous screen without making a selection Page 39 Calibrate Select this option to calibrate your HAVex instrument using a calibrator 14 32 02 03 15 OK to Calibrate Attach the accelerometer to the calibrator such that the vibration travels through your chosen Axis Use the key to highlight the relevant axis and press P to select ensuring your calibrator is also switched on Calibration of each axis takes 15 seconds to complete 14 32 02 03 15 Calibrating Axis If calibration is successful Axis Calibrated will be shown in Yellow for 5 seconds or if the calibration fails Calibration Failed will be displayed in Red for 5 seconds 14 32 02 03 15 l 14 32 02 03 15 Press to return to the previous screen Page 40 Value Select this option to change the value that your vibration calibrator outputs in m s 14 32 02 03 15 Use the key to change the value highlighted then press om to move the highlight to the next position Valid levels are between 9 00 and 11 00 m s If an invalid value is selected the warning message Value Not Valid will be displayed in red 14 32 02 03 15 Value Not Valid warning Message Press to return to the previous screen with any valid changes made Page 41 Sensitivity Select this option to set the sensitivity value for each axis that has been supplied with your accele
26. f the instrument Use the key to highlight the required option pages and press to select The Language selection screen number is shown in Red 14 32 02 03 15 Red Tick indicates current selection A 14 32 02 03 15 Press 6 to return to the previous screen without making a selection If a language is inadvertently selected please ensure the instrument is restarted and then use the following key sequence to access the Language selection screen 00000000000 Page 35 Meter Select this option to change operational configuration settings calibrate your instrument and view system information 14 32 02 03 15 Use the key to highlight the required option and press D to select Press to return to the previous screen without making a selection Reset Select this option to reset all measurement parameter values 14 32 02 03 15 The highlight turns red for 3 seconds to indicate that a reset has been performed Page 36 Configuration Select this option to change operational configuration settings 14 32 02 03 15 Use the key to highlight the required option and press to select Press e to return to the previous screen without making a selection Exposure Select this option to determine if your HAVex instrument should display exposure points and daily exposure action and limit values after ending a recording 14 32 02 03 15 Red Tick indicates
27. ibed and the associated documentation Casella makes no representation or warranties as to the completeness or accuracy of this information Casella assumes no responsibility or liability for any injury loss or damage incurred as a result of misinterpreted or inaccurate information Any documentation supplied with your product is subject to change without notice Instrument Details For your records and for future correspondence with Casella regarding your instrument please complete the following details Hil Page 67 A f vero Mag o E dit nai aid iie dla 9 Accelerometer A CANA Miaa ea 10 Removing ER E E EE EE 10 S nsitiVity or ia e iiai E a derat 42 Species 9 55 Action Levels Harid AETYY 452i ii busts ede Pea Ba iE 47 Aut Di NEU da aca ase 32 B Battery dicta suse ED TOM 19 Pai E eei MI 60 RECIBI E eer erento ter ee tees exe eae i Ye es 20 Battery Indicato zie ir eet ee bi eene Ree Ee PO eR RE pae Enn 19 Battery Pack ad TAO NN 60 Brightness C C libE atlOonz ouo eet ic bd se ida iaa 39 Calibratez ii redeo A e tbe leo adn qa ode cues xoa e aae aieo n daos 40 MEASUREMENT sets moleste 39 Malena iras aa dad 41 Configuration eio reet eor eoe shaded ai E ba aksini 37 GONMECHONS ssi t Doer vid paced ete tea Pe ev oed rei vd usus 58 Customer SUP POM Ties s n Ie ore enia onte en gn Pn aepo ns etg nr eraat ue 65 D DATS es osc E E EAE E E E A EEEE TTET 34 Delete E E S EE EES ES
28. ighted input signal Placement of the overload indicator can be found under Overload Indictor in Chapter 6 See Technical Specification for a complete list of Overload triggering points Page 14 Chapter 4 Getting Started The HAVex instrument has three states of basic operation e Stop State e Record State e Playback Whilst the instrument is in the Record State the vibration activity is analysed and all parameters available on your instrument are calculated The data captured is saved to the internal flash memory and can be viewed onscreen or downloaded to the vibration analysis software Vibdata LITE or Vibdata Pro as and when required To Start or Stop a recording press the following key Whilst the instrument is in the Stop State calculations are displayed on screen but are not stored in flash memory Exposure Points are only available at the end of a recording or when viewing a saved recording The option to display Exposure Points must also be set to On During Stop State it is possible to change the Settings and undertake Calibration of the instrument Stop State Record State and playback can easily be distinguished Stop State Record State Record State shows Record Symbol and Time Recorded Z 1 04 m s Playback 00 02 01 Wh Playback shows Play Symbol and Total Time Recorded Z 4 01 m s Page 15 Whilst in Stop State press e to open the Main Menu This
29. m s Page 63 Exposure Time until Daily Exposure Action Level of 2 5 m s is reached 2 EAV t 8 Vsum Vsum Vector Sum HARM EAV Exposure Action Value 2 5 m s Exposure Time until Daily Exposure Limit Level of 5 0 m s is reached 2 ELV ti 8 Vsum Vsum Vector Sum HARM ELV Exposure Limit Value 5 0 m s Page 64 Chapter 11 Customer Instrument Support Warranty and After Sales Service Casella design and manufacture precision instruments which if treated with reasonable care and attention should provide many years of trouble free service In the unlikely event of a fault occurring with your product during the warranty period the instrument should be returned in its original packaging to Casella or to an authorised agent Please enclose a clear description of the fault to ensure your instrument is dealt with as quickly as possible Any misuse or unauthorised repairs will invalidate your warranty Damage to your product caused by faulty or leaking batteries is not covered by the warranty Details of the warranty cover are available upon request from Casella or your authorised agent All instruments designed and manufactured by Casella adhere to strict British and International standards To ensure your instrument remains compliant with these standards it is highly recommended that your instrument is returned annually for calibration Annual calibration is par
30. ng a known vibration source such as the Casella M104007 Vibration Calibrator To ensure measurements are as accurate and as repeatable as possible always ensure that your cable is tightened securely to your accelerometer and that the accelerometer is mounted as securely and as flush as possible to the vibration source The trailing cable of the accelerometer should also be attached to the vibration source without creating a potential hazard for the operator or other people Where possible always mount the accelerometer as near to the centre of where the operator holds and grips the vibration source In reality this is not always possible and the best compromise must be achieved Measurement durations are dependant on the vibration source and a minimum period of 30 seconds for Hand Arm Vibration is recommended Measurement periods of 3 to 15 minutes are often used for Hand Arm vibration These increased durations will undoubtedly increase the accuracy and repeatability of your measured results Hand Arm Vibration Transducer Mounting The supplied mounting block can be attached to the HARM accelerometer using the supplied screw and tightened using a Phillips screw driver The mounting block can then be mounted to the vibration source using hose clamps or plastic ties If plastic ties are used it is recommended that they are tightened using a tie tensioning tool Attaching devices such as clamps and the accelerometer to hand held devices may alter
31. nstrument and contact your service centre e To ensure continued precision performance of your instrument have it checked and serviced at regular intervals Contacting Casella This manual contains complete operating instructions for the Casella HAVex Vibration Meter read it carefully and you will quickly become familiar with your instrument and its operation If you do encounter problems with the operation of your instrument please feel free to contact customer support with your enquiry on Telephone 44 0 1234 847799 Website http www casellasolutions com Helpdesk http helpdesk casellameasurement com Email info casellasolutions com Contents CHAPTER dica ls 8 IMGROGUCUION on 8 HAVex Tri Axial Hand Arm Vibration Meter HARM 8 CHARTER B seeioon eno ean hcennie nep ini 9 Accelerometer Type Removal and Fitting sene 9 Accelerometer Types d tah ante tede ee DER 9 HAVex Hand Arm Tri Axial Accelerometer KD10410 ss 9 Attaching amp Removing the Accelerometer sse 10 CHAPTERS uS 11 Measuring Vibration ia ee ge nte es 11 Hand Arm Vibration Hand Arm Vibration Transducer Mounting e Vibration Direction 18 Vibration Level 198 Frequency Weighting Filter Under Range amp Overload Conditions 14 Under Range Condition 414 Gverload Go
32. o Stop State Page 46 Exposure On When a recording is stopped and the option Exposure is turned on then the instrument will automatically enter Playback and display the Exposure Point values and the time periods for the action and limit values See Show Results On if Show Results are also turned on Playback is identified by having a green play symbol in the top left hand corner Play Symbol amp Recording Time 00 02 01 Whf 00 02 01 Wh Exposure Points are shown for periods of 5 minutes 15 minutes 30 minutes and 1 hour The exposure points are also colour coded to give instant visual indication and are based on the following criteria in the UK specified by the HSE 0 to lt 100 mm Less than Action Value gt 100to 400 4 Aware Action Value Exceeded mM Warning Limit Level Reached Exit Playback by pressing either or P and the instrument is placed into Stop State In accordance with the European Union Physical Agents Directive the Action Level and upper Limit Level are set as follows Hand Arm Action Level 2 50 ms 100 Points Limit Level 5 00 ms 400 Points Page 47 Under Range Indicator Each axis on the HAVex has independent Under Range indicators which are visible in Stop State or Record State Unlike overload the under range condition is not saved with the recording and is therefore not available in Playback The
33. o your PC allowing the data to be viewed and printed in professional reports Communication between a PC and your HAVex meter is made via the USB connector at the top of your instrument The correct Casella HAVex USB driver will need to be installed on your PC and is automatically installed whilst installing Vibdata To ensure data does not become corrupt please ensure that Stop State is selected on the instrument before downloading saved recordings 1 Ensure the HAVex instrument is ON 2 Connect the HAVex instrument to the PC via the USB lead Your HAVex instrument is now ready to download data into Vibdata For comprehensive instructions please refer to the Vibdata user manual Page 51 Chapter 8 Accessories M104007 Vibration Calibrator M104008 Spare Carry Case for HAVex and Accessories M104009 HARM Tri axial Accelerometer M1040010 Mounting Studs Pk 5 M1040011 Cable Ties Metal Barbed Pk 100 M1040012 Transducer Mounting Glue and Stud Pack M1040013 Transducer Petro wax Mounting Compound M1040014 Vibdata Pro Vibration Analysis Software M1040015 Tensioning Tool and 100 Cable Ties Metal Barbed M1040016 Transducer Mounting Block and Screw M1040017 2 4V 2100mAh NiMH Battery Pack M1040018 NiMH Battery Pack Recharger M1040019 AC Output Cable 1 metre M1040020 USB Download Cable 1 metre supplied with the HAVex upgrade from supplied Vibdata LITE Page 52
34. onononononanocononocanonanonnccncanononnos 20 Record Statea 12er des RO EFE I Ero E E EEEE 44 Re8s6t coe UH Re RR E ETE D RUNE MERI ER EO ERE 36 S Sensitivity eie eite a a Fe eed poaae ae aee s aeos Reb ae avos Settings ssss Settling Time Show Results Stabilization Time Standards DEM Stop State iier i e e a RE ae EQ e EE aed UU E eges Switching Your HAVex Meter Off ener 21 Switching Your HAVex Meter On cccococccccnnoncconononnnnnoncnnnonennnnnnncnnonannnononoss 21 T Technical Specification esee enne enne Temperature Operating Range ccccccccccncnncnnnnnnnnnnnnnononononnnnnnnononononnnanonons ue DEN Settling Stabilization MESE Transducer Mounting Hand AFDY aot ete ia 11 Tris Off Severs vast roce aay cote eee Rie at ee een cans aut P Det een PNA e eb gene Cen decgetnedeces 21 TUI ON eite e Re pe A UE er Ee 21 U Under Range inma iia EE eee Fer ehe e acentos 14 48 53 nitsu Seam Une th Ure a 31 Using TNE HAV EK oreet teen er ene ree ens eto teo ena enu e pelo eee avenues e ost Pe an 43 V Mri E 9 Vibration Direction use e ep iras 12 SHE 13 Ww Warm Up Warranty TIG E cr En e teh o d Fr c ep e Cub o i Pe CER ERE
35. pad Layouts tas at ate car o Ra atque 17 Chapter 1 Introduction HAVex Tri Axial Hand Arm Vibration Meter HARM Thank you for purchasing your product from Casella The HAVex Tri Axial vibration meter brings simplicity looks value for money and power to the world of vibration monitoring The instrument is fully compliant with the standard ISO 8041 2005 and has been designed to make sure workers do not exceed the exposure to vibration levels as stated by the Control of Vibration at Work Regulations 2005 It boasts a clear easy to read colour LCD and has full data logging capabilities with fast USB downloading to your laptop or PC The HAVex incorporates internal Flash memory to store all your recordings and the data can then be transferred to the supplied software Vibdata LITE using the supplied USB cable or viewed onscreen Not only does the HAVex vibration meter have all these features in a small and ergonomic case but it is also supplied with a rechargeable battery pack featuring the latest NiMH technology which incorporates extremely low self discharge Every part of the HAVex has been thoughtfully designed The case accelerometer and cable are all rugged for industrial use and the meter is extremely easy to use with a simple three button operation all you virtually need do is press the power button and start recording With the HAVex combating HAVS has become even easier Page 8 Chapter 2 Accelerometer Type R
36. rdings will be saved A completely discharged battery pack may need several hours to become fully charged Observe the LED on the charging unit to determine the charging cycle When the charging unit displays a constant Green LED then charging is complete LED Colour Mode Output Yellow No Battery 6 4V Yellow Initialisation 30mA Orange Fast Charge 1 3A Green Yellow Top off Charge 160mA Green Trickle Charge 30mA Orange Green Error 30mA For safety only use the charging unit and battery pack supplied by Casella Page 20 Switching Your HAVex Meter On Off To turn on your instrument press and hold the Power On Off key for approximately two seconds Your meter will display the start up screen and initialise any saved settings The start up screen is shown below Serial No 107909 Once the start up sequence is complete the instrument is placed in its Stop State displaying the parameter measuring screen To turn off your instrument press and hold the Power On Off key for approximately three seconds and the following screen will be displayed 14 32 02 03 15 Release the Power On Off key to shut down Your HAVex meter is also equipped with an automatic shut down if no key is pressed for 10 minutes after power on If any key is pressed after the instrument is turned on then the automatic shutdown will not occur Page 21 Chapter 5
37. rditlOri citt teo aeter 14 CHAPTER cc cc 15 Getting Startede iaieiiea didia 15 Keypad L8yOUt nee eint ede decia ota ace 17 Powering Your HAVex Meter conciernen 18 Battery Indicator 19 Recharging the Battery Pack 20 Switching Your HAVex Meter On Off sees 21 CHAPTER iet praebe puits uicta padece QUIA Seir NP o niu Menu Options Rangen Ut t Ct o C v Lt LL e Len LL ea Ls iar P Open All Open Todays m Open 7 D8ys a ici oa reads 28 Delete Single File sape ien t RE IO n tu ERR RE 29 Delete All Files 30 Settings 3 Units 91 Brightness de Auto Dim de General 33 Time 33 Date 34 ERE SIN O T Meter EE 36 iii A cdo 36 Configuration rl Exposure col Show Results 38 Information 38 Calibration 739 MeasU rernernt 5 nee te Rete teret 39 A A O OTAN 42 CHAPTER Buitre 43 Using the HAVOx sssssssseeeee tenente tentent treten tentent ntt 43 Stop State M Record State i Playback Show Results On ci te e e e t es 46 Exposure On 47 Under Range Indicator 48 Overload Indicator wn 49 T ee ss a a a a a Da 50 EXDOSUPE nan ta cid ic nto cea 50 CHARTER dr anana a 51 Downloading Saved Recordings to a PC seres 51 CHAPTERS D 52 eer lr
38. rometer No vibration calibrator is required for this option 14 32 02 03 15 Press 6 to return to the previous screen with any valid changes made Use the key to highlight the relevant axis and press to select and change its value 14 32 02 03 15 Use the key to change the value highlighted then press on to move the highlight to the next position Valid levels are between 5 00 and 15 00 mV g If an invalid value is selected the warning message 05 00 to 15 00 only will be displayed in red 14 32 02 03 15 Value Not Valid warning Message A Press 6 to return to the previous screen cancelling any changes made Repeat for all axes as required Page 42 Chapter 6 Using the HAVex The HAVex instrument has three states of basic operation e Stop State e Record State e Playback Stop State This is the default state of the HAVex instrument and whilst in this state limited calculations are displayed on the instruments screen but no values are recorded in the internal flash memory It is only possible to change Settings and undertake Calibration of the instrument whilst in Stop State Exposure Points are not available when in Stop State Weighting Parameter Range Battery Level Measurements Scroll through the available parameters using the key The parameters available in Stop State are Arms Aeq Peak Vector Weigh
39. then use the key to scroll through the available recordings 16 32 02 03 15 Press to return to the previous screen without making a selection Page 29 Delete All Files Select this option to delete all recordings from the instruments flash memory Proceed with caution as deleted files cannot be recovered 14 32 02 03 15 Use the key to highlight the required option and press om to proceed Select No or press Q to return to the previous screen without deleting any files Select Yes to delete all saved files Delete All Files will be highlighted red 14 32 02 03 15 When all files are deleted the Main Menu is displayed Page 30 Settings Select this option to manage settings on your HAVex instrument 14 32 02 03 15 Current selections are shown at the right hand side Use the key to highlight the required option and press to select Press to return to the previous screen without making a selection Units Select this option to change the units of measure of your HAVex instrument 14 32 02 03 15 Red Tick indicates current selection 4 Use the key to highlight the required option and press eS to select The unit will be selected and the previous menu screen will be displayed Press to return to the previous screen without making a selection Page 31 Brightness Select this option to change the display brigh
40. ticularly important for cases in which instrument readings are to be used in litigation or compliance work For warranty or service please return your instrument to The Service Department Casella Regent House Wolseley Road Kempston Bedford MK42 7JY Page 65 The instrument will not power on Recharge or replace the battery pack The Instrument is not responding on all or individual axis to inputted vibration levels Turn the instrument Off wait 10 seconds to allow the instrument to reset and then turn back On Check the cable for possible damage or incorrect attachment to the transducer or instrument The instrument is displaying unexpected readings in one or more modes of operation Are the sensitivity values entered correctly Ensure the transducer is fitted securely to the source of vibration Ensure cable is securely fastened The overload indicator is permanently on Change to a higher range The overload indicator comes on before the top of the range is reached The overload indicator will also be shown if the input amplifier is saturated This is possible even if the displayed vibration reading on your instrument is below the top of the selected range because of the applied frequency weighting filter Page 66 Disclaimer Whilst every effort is made to ensure the accuracy and reliability of both the instrument descr
41. ting is fixed to Wh Hand Arm on the HAVex instrument the range can be changed through the Main Menu To start a recording Record State press the key at any time Page 43 Record State Whilst the instrument is in the Record State the vibration activity is analysed and all parameters available on your instrument are calculated Record State is easily identified by the Record Symbol and the Recording Time in the top left hand corner of the screen It is not possible to enter the Menu system or turn the instrument off whilst in Record State Weighting Parameter Range Record Symbol amp Recording Time 00 02 01 Wh Battery Level Measurements Z 1 04 m s Scroll through the available parameters using the key The parameters available in Record State are Arms Aeq Peak Vector To end a recording press the D key If File Naming is turned on then you will be prompted to enter a file name See page 34 for more information The data is saved to the internal flash memory If Show Results or Exposure Points are turned on then the instrument will automatically display the relevant parameters If neither of the above are turned on then the instrument is placed back into Stop State Recordings saved on your instrument will not be lost if the battery pack is removed Page 44 Playback Playback is identified by having a green play symbol in th
42. tion to change the time stored on your HAVex instrument 14 32 02 03 15 Use the key to change the value highlighted then press pa to move the highlight to the next position If an invalid time is selected the warning message Invalid Time will be displayed in red 14 32 02 03 15 Invalid Time warning Message 3 Press 6 to return to the previous screen with any valid changes made Page 33 Date Select this option to change the date stored on your HAVex instrument 14 32 02 03 15 Use the key to change the value highlighted then press to move the highlight to the next position If an invalid date is selected the warning message Invalid Date will be displayed in red 14 32 02 03 15 Invalid Date warning Message Press to return to the previous screen with any valid changes made File Naming Select this option to determine if your HAVex instrument should store File Names with saved recordings or not A file name must be entered when ending a recording if this option is turned on 14 32 02 03 15 Red Tick indicates current selection 4 Use the key to highlight the required option and press P to select The option will be selected and the previous menu screen will be displayed Press e to return to the previous screen without making a selection Page 34 Language Select this option to chnage the language o
43. tness of your HAVex instrument 14 32 02 03 15 Use the key to change the brightness level and the press ES to return to the previous screen with the selected brightness level The display brightness can be adjusted between 20 and 100 in 20 steps Press Q to return to the previous screen without altering the brightness level Note that the brightness may be affected by the Auto Dim function see below Auto Dim Select this option to determine if your HAVex instrument should use the Auto Dim function or not The Auto Dim function is a battery saving feature that automatically reduces the display brightness of all screens to 10 if no key has been pressed for 70 seconds For optimum battery life the Auto Dim should be switched On 14 32 02 03 15 Red Tick indicates current selection Use the G key to highlight the required option and press to select The option will be selected and the previous menu screen will be displayed Press Q to return to the previous screen without making a selection Whilst the Auto Dim feature is active press any key to deactivate it and return to the selected brightness level Page 32 General Select this option to open another menu level of General options 14 32 02 03 15 Use the key to highlight the required option and press D to select Press 6 to return to the previous screen without making a selection Time Select this op
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