Barco MGD 221 MKII Personal Lift User Manual
Contents
1. 232 22223 2 3 3 3 12 2 4 51 i ae 13 a Connection of video signals 13 b Connection of data signals 14 Connection of optical Sensor 14 d Connection Of 2 2 2 22 2 15 2 5 Positioning the display eeeeeeeeseeeeneeeeeeeeeeeneeeeeeneeeesaeeeseneeeesnaeeeenaeees 15 Important considerations 16 3 Operation User Controls serrant aaa eak ita 17 Si SWitehing on eet aah nae aceite eet 17 3 2 Contrast and brightness control 18 3 3 Viewing Status information cecceceeeeeeeeeeeeeeeeeeeseneeseeeeeaeeseeeeeeeeeneees 20 3 4 Other adjUStMent e 21 4 Advanced settings and Adjustments For service staff 22 Settings ele SS al ee 22 4 2 a OELE AN C EEEE EAT 24 a How to make the adjustments 24 b Description of the adjustments 24 G2. c Connection of optical sensor To calibrate the display connect the optical sensor to the Sensor connector 1 at the front Notes The display supports the DTP 92 from X Rite as optical sensor The optical sensor is not supplied by BARCO Calibration can be done by means of MediCal only Always use the Ambient Light Shield during calibration At the front the sensor plug is located under the bezel Installation 14 Connection of power 1 Power cord Utilize a UL listed detachable power cord 3 wire type SJ or equivalent 18 AWG min rated 300 V min provided with a hospital grade type plug 5 15P configuration for 120V application or 6 15P for 240V application 2 Plug one end of the power cord into the rear of the display connector LINE 10 Plug the other end into a grounded AC power outlet The display automatically adapts to the voltage The voltage range is 100 240 VAC 10 2 5 Positioning the display The tilt and swivel base allows you to adjust the height and viewing angle of the display to obtain an optimal viewing comfort Installation 15 Important considerations The best environment for diagnostic imaging is one with controlled and dimmed ambient light The human eye s sensitivity depends on the ambient light strength It is most sensitive to small contrast changes or subtle image details at limited ambient light levels The best ambient light level expressed in Lu
3. MGD 221 MKII Medical Greyscale Display Installation amp User Manual 2001 BARCO nv All rights reserved Trademark information TrueGrey MediCal BarcoMed and MeDis are registered trademarks of BARCO NV Windows NT is a registered trademark of Microsoft Corporation MGD 221 User s Guide 3 221 User s Guide 4 SAFETY INSTRUCTIONS RISK OF ELECTRIC SHOCK 2 DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER TO QUALIFIED SERVICE PERSONNEL Regulations e This apparatus conforms to IEC601 1 UL2601 1 CUL2601 1 EN 60601 1 e This apparatus is classified as Type without Applied Part Usage in Hazardous locations Class equipment e Equipment not suitable for use in the presence of a flammable anaesthetic mixture with air or with oxygen or nitrous oxyde FCC notice This equipment has been tested and found to comply with the limits of a class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipmentis operated inacommercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is like
4. amp skewing Horizontal bowing left Advanced geometry Advanced bowing amp skewing Horizontal bowing right Advanced geometry Advanced bowing amp skewing Horizontal skewing left Advanced geometry Advanced bowing amp skewing Horizontal skewing right Advanced 29 Focus Static focus Adjust Static focus to obtain an image as sharp as possible in the center Focus zone You can adjust the focus in 9 independent zones Turn the control knob to obtain an image as sharp as possible in the selected zone Press the control knob to switch to the next zone ALC optional Ambient Light Compensation ALC is an optional system that automatically adapts the display contrast and brightness level to the ambient light in the room The system has to be adjusted by setting the contrast and brightness in the darkest ambient light conditions the user works and then repeating this in the brightest conditions To adjust the ALC system proceed as follows 1 Dim the light in the room to create the darkest ambient light condition the user normally works in 2 Enter the Minimum illuminance menu 3 Select Measure ambient light The display now stores the ambient light level that corresponds to the darkest condition 4 Select Contrast and set the display contrast to the desired level 5 Select Brightness and set the display brightness to the desired level 6 Exit the Minimum illuminance menu 7 I
5. This is caused by the shape of the picture tube Inside the CRT a so called electron gun shoots an electron beam towards the front the glass panel Because this panel is rather flat instead of having a spheric shape the electron beam has to travel a longer distance the corners than in the center So the intensity is higher in the center This phenomenon is even increased by the irregular distribution of the phosphor and aluminium layer on the glass panel These tend to be thicker in the center BARCO has developed a special system called Luminance Uniformity Correction LUC that solves this problem The LUC system enhances the light output at the edges of the CRT so that the luminance there is the same as in the center The LUC system is calibrated in the factory From time to time it has to be re calibrated at the customer s site by means of the light sensor you use for normal color calibration The system can be calibrated and switched on or off by a qualified technician Power saving system The display is equipped with circuits that can handle power saving management When the system is switched on it can power down the display in several steps The system is controlled by the imaging board or the PC that delivers the video signals When you are working on the computer the imaging board delivers both sync signals and the display is operating normally When you don t touch the computer keyboard for a certain time
6. Version The internal software version Run time The total operating time since production including burn in time White level The display s white level or light output after calibration in calibrated position Activity timeout This is the time expressed in seconds before the display interrupts the data communication with the computer e g during a computer session with MediCal if the computer does not respond anymore SH compensation optoinal Indicates if Southern Hemisphere compensation is switched on or off Note Southern Hemisphere compensation is an option If the option is not installed in the display this line does not appear in the menu Actual H frequency Actual V frequency These are the actual horizontal and vertical sync frequencies of the connected video signal They are measured constantly by the display 3 4 Other adjustments The main menu items Settings and Adjustments are reserved for trained service staff and are therefore password protected Operation 21 4 ADVANCED SETTINGS AND ADJUSTMENTS FOR SERVICE STAFF ONLY Important The functions and controls described in this chapter can have a serious impact on the performance of the display They should be touched by trained service staff only 4 1 Settings OFF OFF Orbiter OFF Power save ON Display address t User controls disable OFF Exit The Settings menu To change the settings 1 Turn the control kn
7. the imaging board only delivers vertical sync This is sensed by the display s micro controller that blanks the image on the CRT This results in a drop of power consumption with about 25 Background information 34 When you leave the computer idle for a longer period the imaging board now delivers horizontal sync only As a result the display s micro controller switches off a number of internal circuits The power consumption has now dropped with about 42 At last the imaging board delivers no sync signals at all and the micro controller switches off all but one power supplies in the display Only the micro controller s own supply keeps on running resulting in a very low power consumption of 6 W If you start using the computer again the imaging board switches on both sync signals and the micro controller switches on the display The times after which the different steps of power management must become active is set in the PC s display properties Background information 35 APPENDIX TECHNICAL SPECIFICATIONS Picture tube Faceplate transmission No Panel 34 AR panel 30 Faceplate type AR panel or No Panel Image representation portrait Phosphor B4 L8 Light output Calibrated 215 Cd m Resolution Max adress pixels 1280 Max adress lines 1600 Scanning systems Horizontal scanning Multi sync controller controlled VGA boot range 30 35 kHz Normal operation range 80 140 kHz Minimum b
8. will power down the display in several steps The power saving system can be switched on or off during the installation or adjustment of the display This system requires a computer imaging board that supports power saving management 1 2 Versions and options The MGD 221 comes in 2 different versions With an anti reflective panel in front of the picture tube and without panel No Panel version In both cases the phosphor is a B4 L8 type The type of CRT phosphor and the presence of the coating are indicated on the label at the rear of the display The video input is terminated to 75 Ohm Important It is absolutely necessary that the impedances of imaging board and display are the same If not the image quality will be inferior The MGD 221 can be delivered with the following options Southern Hemisphere Compensation and Ambient Light Compensation ALC The MediCal software and the X Rite DTP92 sensor are not delivered with the display MediCal can be ordered separately 1 3 About the manuals This guide is meant for people who want to install and use the MGD 221 display as well as people who need to install and adjust the display The chapter Advanced Adjustments is meant for trained engineers only because it describes actions and procedures that require a technical skill to be performed properly The use of the software MediCal is described in the MediCal User s Manual Introduction 10 2 INSTALLATION 2 1 Pre
9. automatic power saving system see Introduction chapter on or off Display address In multi head systems multiple displays controlled by one system each display must have a different address With this setting you can set the display address from 1 to 16 User controls disable With this setting you can enable or disable the user controls When OFF the user controls are not disabled and the user can activate and use the OSD menus When ON the user controls are disabled After quitting the OSD the user will no longer be able to activate the OSD To activate the OSD again when the user controls are disabled use the following code 1 Turn the control knob times counter clockwise seen from the rear 2 Turn the control knob times clockwise 3 Turn the control knob times counter clockwise Note This should be done in quite a short time Saving the settings The settings are automatically saved after changing them Advanced 23 4 2 Adjustments a How to make the adjustments 1 Turn the control knob at the rear from left to right or from right to left to activate the On Screen Display OSD main menu In the main menu turn the control knob to select Adjustments Press the control knob for a few seconds The Adjustments menu appears Note If you press only shortly the message Service protected appears Turn the control knob to select the category of adjustments you want to make Press the c
10. cautions e Keep your original packaging It is designed for this display and is the ideal protection during transport Do not lift the display all by yourself to avoid injury Avoid reflections in the picture tube to reduce eye strain Place the display on a strong and stable table or desk if used as desktop display Keep the display away from heat sources and provide enough ventilation in case it is built in a rack or console Keep the display away from strong sources of magnetic fields Make sure the display and computer are both switched off before connecting the signals 2 2 The package contents e e The MGD 221 display The accessory box in which you found this manual Notes e e The MGD 221 can be part of a complete MeDis system consisting of the display itself an imaging board and software In that case the package contains a lot more items The contents of the package is then described in the manual of the complete system The ambient light shield inside the accessory box should always be used during conformity calibration with the X Rite DTP92 optical sensor Installation 11 2 3 Controls and connectors 1 Optical sensor plug 2 Ambient Light Compensation ALC sensor optional 3 Green power LED 4 Control knob combination of a push button and a turning knob The control knob is used for switching the power on off and selecting and performing functions in the OSD on screen
11. display menu 5 Remote RS 232 output 6 Remote RS 232 input 7 Video input 8 Horizontal composite sync input 9 Vertical sync input 10 Power input 11 Power button A O ONO Installation 12 2 4 Signal connection a Connection of video signals The connected equipment must comply to all relevant safety demands Important The use of low quality video cables can distort the video signal and influence diagnosis 1 Check the impedance of the imaging board that produces the video signals you want to connect It must be 75 Ohm just like the input of the display If not the quality of the images on the display will be inferior 2 Connect the video output of the computer s imaging board to the video and sync inputs on the display s rear panel Use a proper video cable The video cable is not supplied with the display unless the display comes as part of a complete BARCO MeDis system that also contains an imaging board The inputs accept the following signals Video with separate horizontal and vertical sync The video cable has 3 wires Connect the video signal to the connector Video 7 Connect the horizontal sync signal to the connector HS CS 8 Connect the vertical sync signal to the connector VS 9 Video with external composite sync The video cable has 2 wires Connect
12. eometry aie dete eds 24 T 30 ALG optional sce dite hte ae dn een etd 30 Factory reset 31 HOW SAVE CHANGES 31 5 32 6 Troubleshooting 33 Appendix A Background information 34 Luminance Uniformity Correction 34 Power SAVING System cceccceescececeseeeeeseeeeeeeeeeeseeeeesaseneneeeeseseeenesisenees 34 Appendix Technical Specifications 36 MGD 221 User s Guide 7 MGD 221 User s Guide 8 1 INTRODUCTION 1 1 Overview Resolution and bandwidths The BARCO MGD 221 is a high resolution greyscale portrait display Its outstanding visual performance combining a 2 MegaPixel resolution with a high brightness makes it ideal for medical imaging and many other medical and scientific applications The MGD 221 is compatible with any AC power system worldwide and automatically synchronizes to a wide range of sync frequencies Its high speed video amplifier supports pixel clocks up to 250 MHz The memory system The internal memory system can contain the adjustments for 8 different scanning formats the so called scanning modes Each scanning format is characterized by its sync signals The display s inter
13. he control knob 4 from left to right or from right to left As a result the OSD main menu appears Note The control knob should turn over at least 30 degrees before the OSD becomes visible MAIN MENU Contrast CAL Brightness CAL Status information Settings Adjustments Exit The OSD main menu The main menu indicates the current setting for contrast and brightness This can be CAL The calibrated position This is the preferred setting in a controlled environment ALC For contrast only This indicates the Ambient Light Compensation ALC is on and contrast is controlled automatically depending on the ambient light ALC is an option lt empty gt When the main menu does not specify a setting contrast or brightness is manually set to a different value than the calibrated position To put contrast in calibrated position 1 Turn the control knob to select Contrast in the OSD main menu 2 Press the control knob shortly The contrast control menu appears In the contrast control menu select Contrast CAL position and press the control knob shortly Contrast CAL position Manual contrast adjustment Exit Contrast control menu Operation 18 To control contrast manually 1 Turn the control knob to select Contrast in the OSD main menu 2 Press the control knob shortly The contrast control menu appears 3 Inthe contrast control menu select Manual contrast adjustment and press the contr
14. l knob until you have reached the desired brightness 5 Press the control knob shortly or wait a few seconds to return to the brightness control menu 6 Inthe brightness control menu select Exit and press the control knob shortly to return to the main menu Alternatively you can just wait a few seconds and the OSD returns to the previous menu automatically 3 3 Viewing Status information You can view the status and actual settings of the display You cannot change them in the Status Menu Changing the settings is reserved for trained service staff only To view the status information Turn the control knob to select Status information in the OSD main menu The Status information menu appears The only control in the menu is Exit STATUS INFORMATION Display Name MGD 221 Serial Number 5114147 Mode Name Mode H frequency Mode V frequency Software Version Run time White level Activity timeout SH compensation Actual H frequency 72 02 kHz Actual V frequency 75 00 Hz Exit Status information menu Explanation of the Status information menu items Display Name This is the display type Serial Number This is the display s serial number Mode Name The currently selected scanning mode Mode H frequency Mode V frequency These are the horizontal and vertical sync frequencies of the currently selected scanning mode These are the figures stored in the memory Operation 20 Software
15. lanking 2 4 s Storable scan frequencies 4 Prealigned scans 1 Vertical scanning Minimum frequency 48 Hz Maximum frequency 150 Hz Minimum blanking 250 s after leading edge Geometry Nominal size 4 3 ratio 300mm x 400mm Nominal size 4 5 ratio 304mm x 380mm Inputs Video BNC connectors 75 Ohm Nominal level 0 7 Vpp Sync BNC connectors 75 Ohm Nominal level 0 5 Vpp Communication inputs outputs RS232 9 sub D connector Baudrate 9600 Power supply Voltage 100 240 V 10 Frequency 50 60 Hz Current 2 3 A Environmental Temperature range C Storage 20 65 Operation 0 45 Within specs 15 30 Altitude storage 25 000 ft operational 10 000 ft Humidity relative 95 max non condensing Weight No Panel version UnpackedPacked 37 4 kg 55 9 kg Dimensions packing H x Wx D 788mm x 630mm x 780mm Dimensions monitor mm Height 558 Width 400 Depth 561 Modifications reserved Technical specifications 36
16. ly to cause harmful interference in which case the user willbe required to correct the interference at his own expense A Power connection e Power cord Utilise a UL listed detachable power cord 3 wire type SJ or equivalent 18 AWG min rated 300 V min provided with a hospital grade type plug 5 15P configuration for 120V application or 6 15P for 240V application e Warning This apparatus must be earthed e Power requirements connectthe apparatus Read the safety and operating instructions before operating the apparatus Retain safety and operating instructions for future reference Adhere to all warnings on the apparatus and in the operating instructions manual Follow all instructions for operation and use to an AC voltage as indicated at its back Using a lower voltage the apparatus will not be able to operate Using a higher voltage may damage the apparatus If you are not sure of the type of power supplied consult the power company Do not overload wall outlets and extension cords as this may result in fire or electric shock Mains lead protection U S Power cord Supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them paying particular attention to cords at plugs and receptacles Water and moisture Never expose the apparatus to rain or moisture e Never use the apparatus near water e g near a bathtub
17. nal micro controller continuously samples the connected sync signals and compares them to the scanning modes already stored in the memory If the connected signal has already been stored the micro controller adapts the image to the corresponding adjustment values in the memory and further adjustments are unnecessary Image conformity and consistency Image conformity and consistency are the keywords In our factory the MGD 221 displays are perfectly adjusted and calibrated before they are shipped to the customer Internal circuits like the TrueGrey and Automatic White Stability AWS systems ensure display consistency over time Conformity with the original image quality is guaranteed by the automatic calibration which can be done by means of an optical sensor connected to the Sensor connector on the display The sensor is not supplied with the display Calibration and adjustments The conformity calibration as well as the complete adjustment of the display can be performed by means of the remote user friendly MediCal software package MediCal is especially developed to adjust and check BARCO s medical displays Introduction 9 A lot of adjustments can also be done on the monitor itself by means of an extensive on screen menu system accessible from the rear panel controls Power saving system The MGD 221 is equipped with a power saving system When left idle for a certain time the computer connected to the display
18. ncrease the light in the room to create the brightest ambient light condition the user normally works in 8 Enter the Maximum illuminance menu 9 Select Measure ambient light The display now stores the ambient light level that corresponds to the brightest condition 10 Select Contrast and set the display contrast to the desired level 11 Select Brightness and set the display brightness to the desired level 12 Exit the Maximum illuminance menu Advanced 30 Luminance uniformity This menu allows you to calibrate the display including the Luminance Uniformity circuit Proceed as follows 1 Connect the X Rite DTP92 sensor and apply the black shield see chapter Installation 2 Follow the instructions on the screen Factory reset This function allows you to undo all adjustments you have made since the display left the factory Select Go ahead to restore the factory settings Select Exit to return to the previous menu without erasing the adjustments c How to save changes Proceed as follows 1 After having made the adjustments select Exit in each appearing menu until the Save Changes message appears 2 Select Yes to save the changes Select No to exit the OSD menus without saving the changes What happens upon saving When the current scanning mode was already stored the display memory the scanning mode is updated with the new adjustment values When the scanning mode was not yet s
19. ob at the rear from left to right or from right to left to activate the On Screen Display OSD main menu In the main menu turn the control knob to select Settings Press and hold the control knob for a few seconds The Settings menu appears It displays each setting and its current status Note If you press only shortly the message Service protected appears Turn the control knob to select the setting you want to change Press the control knob shortly to change the selected setting For Display address you can change the setting by turning the control knob Return to the Settings menu by pressing the control knob For the other settings the new status instantly appears in the Settings menu Advanced 22 Explanation of the Settings menu items LUC LUC is short for Luminance Uniformity Control When switched on the internal waveform processor will modulate the gain of the video amplifier so that the luminance is equal all over the screen within a tolerance of 5 The LUC system can be calibrated in the Adjustments menu see further ALC optional ALC is short for Ambient Light Compensation When this setting is on the contrast is controlled automatically depending on the ambient light measured by the ALC sensor 6 in the bezel Orbiter The Orbiter is an internal circuit that when switched on will slightly and slowly move the image to prevent pixel burn in Power save This setting can switch the
20. ol knob shortly The contrast scroll bar appears 4 Turn the control knob until you have reached the desired contrast 5 Press the control knob shortly or wait a few seconds to return to the contrast control menu 6 Inthe contrast control menu select Exit and press the control knob shortly to return to the main menu Alternatively you can just wait a few seconds and the OSD returns to the previous menu automatically To put brightness in calibrated position Contrast scroll bar The short stroke in the bar indicates the calibrated position the long stroke indicates the current setting Turn the control knob to select Brightness the OSD main menu Press the control knob shortly The brightness control menu appears 3 Inthe brightness control menu select Brightness CAL position and press the control knob shortly Brightness Brightness CAL position N Manual Brightness adjustment Exit Brightness control menu To control brightness manually 1 Turn the control knob to select Brightness the OSD main menu 2 Press the control knob shortly The brightness control menu appears In the brightness control menu select Manual brightness adjustment and press the control knob shortly The brightness scroll bar appears Brightness scroll bar The short stroke in the bar indicates the calibrated position the long stroke indicates the current setting Operation 19 4 Turn the contro
21. ontrol knob shortly to enter the selected category In the selected menu select the adjustment you want to make and press the control knob shortly to display the adjustment scroll bar Turn the control knob to perform the adjustment After adjusting press the knob shortly to confirm the adjustment and return to the menu or press for a longer time to undo the adjustment and return to the menu Return to the previous menu by pressing the control knob shortly or selecting Exit when present b Description of the adjustments ADJUSTMENTS Geometry Focus ALC Luminance uniformity Factory reset Exit Adjustments menu Geometry Rotation Advanced 24 Horizontal position Advanced 25 Interlacing Pre correction In most cases you do not need to change this adjustment You may need to increase this adjustment only when the connected video and sync signal contains an abnormally big number of equalization pulses before the vertical sync more than 8 lines resulting in a phase error geometry distortion at the bottom of the image Interlacing Post correction In most cases you do not need to change this adjustment You may need to increase this adjustment only when the connected video and sync signal contains an abnormally big number of equalization pulses after the vertical sync more than 8 lines resulting in a phase error geometry distortion at the top of the image SH Compensation optional If y
22. our display is equipped with the Southern Hemisphere option the on screen display menu contains additional functions to adjust the image geometry If the option is not installed in the display this menu does not appear SH Compensation SH Compensation ON OFF For proper geometry adjustment in the Southern Hemisphere you must switch SH Compensation ON If not the SH controls will not function SH Compensation SH Top Advanced 26 SH Compensation SH Position With SH Compensation on we advise to use the SH Position control instead of the Horizontal Position control in the Geometry menu Advanced geometry Horizontal skewing Advanced geometry Horizontal bowing Advanced geometry Horizontal trapezium Advanced geometry Horizontal parabola Advanced geometry Corner top left Advanced 27 Advanced geometry Corner top right Advanced geometry Linearity amp S correction Horizontal linearity Advanced geometry Linearity amp S correction Horizontal S corr Advanced geometry Linearity amp S correction Vertical linearity Advanced 28 Advanced geometry Linearity amp S correction Vertical S corr Advanced geometry Advanced bowing
23. rear shortly Try to switch on the display by pressing key on the keyboard of the computer that produces the video and sync signals for the display Check if both horizontal and vertical sync signals are connected to the display and to the computer There appears no image the green LED is blinking The display is switched in a power saving mode by the automatic Power saving system Press the control knob at the rear shortly Try to switch the display by pressing key on the keyboard of the computer that produces the video and sync signals for the display e Check if both horizontal and vertical sync signals are connected to the display and to the computer On the picture tube appears the message No Valid Sync Signal e Check if both horizontal and vertical sync signals are connected to the display and to the computer e Check if the sync signals are connected the proper way refer to the chapter Installation e Check if both horizontal and vertical sync frequencies match the display specifications refer to the chapter Technical specifications For other problems please consult your technical service department Troubleshooting 33 APPENDIX BACKGROUND INFORMATION Luminance Uniformity Correction A characteristic or limitation of every picture tube CRT is that the luminance decreases towards the edge of the screen surface The decrease is normally 20 to 30
24. the video signal to the connector Video 7 Connect the composite sync signal to the connector HS CS 8 Video with internal composite sync sync on video The video cable has 1 wire Connect the video with sync signal to the connector Video 7 Notes The video inputs cannot be connected in loop through daisy chain The required video amplitude 700 mV 3 dB The required sync amplitude 500 mV Installation 13 b Connection of data signals The display can be controlled remotely by a computer through the serial data bus A typical example of this is the MediCal software that controls the display MediCal runs on a PC that is connected through the serial data bus This PC is not necessarily the same computer as the one that produces the video signals Unlike the video signals it is possible to daisy chain the serial data bus This means you can control different displays from one PC To connect the data signals 1 Connect one end of the serial data cable to one of the PC s COM ports If the COM port has a 25 pin connector you will need to use a D25 to D9 interface connector The cable and the interface connector are both supplied with MediCal Connect the other end of the serial data cable to the Remote In connector 6 on the display s rear panel For a daisy chain application connect the Remote Out connector 5 of the first display to the Remote In connector 6 of the next display
25. tored in the memory the display will create a new scanning mode in the memory However when the memory was full the monitor will display a list of scanning modes in the memory and ask if you wish to overwrite one of them If you want to store the adjustments you have made you will have to overwrite one of the scanning modes in memory Advanced 31 5 MAINTENANCE Picture tube The glass panel of the picture tube is handled with a special coating Take care not to damage or scratch the coating Clean the picture tube with a soft woolen or cotton cloth The cloth should be moist not wet Use a watery solution or a mild commercial glass cleaning solution Apply e g spray the solution on the cloth not on the picture tube Cabinet Clean the cabinet using a recognized cleaning product for medical equipment The cloth you use must be moist not wet The cabinet has been tested for resistance to the following products Cidex Betadine Alcohol Isopropyl and Ethyl Ammonia based cleaners Windex and Aquasonic Gel Maintenance 6 TROUBLESHOOTING There appears no image on the picture tube the green LED at the rear is out e Check if the power cord is properly connected to the power outlet and to the display e Check if the power button is switched on There appears no image the green LED is on The display is switched in Stand by manually or by the automatic Power saving system Press the control knob at the
26. ts up with no image and the green LED 3 on it is in stand by This is the case when the display was powered down while in stand by Manual stand by To put the display in manual stand by mode press the control knob 2 shortly As a result the green LED is ON continuously Note You cannot switch the display in manual stand by when the on screen display OSD is visible In that case first exit the OSD and then press the control knob to switch to stand by mode To activate the display from stand by mode press the control knob 2 again As a result the LED is switched off again Automatic power saving system DPMS The power saving system if switched on can power down the display when you don t use the computer that produces the video and sync signals for a while In that way the system reduces the display s power consumption While the display is powered down the picture tube will be blanked and the green LED on the front is blinking In the last DPMS mode the LED will be on continuously The power saving system is switched off when the display is produced It can be switched on by a qualified technician Note The power saving system can only work if the connected imaging board supports power management For more details please read Appendix A Background information Operation 17 3 2 Contrast and brightness control Contrast and brightness can be controlled through the OSD menus To activate the OSD Turn t
27. washbasin swimming pool kitchen sink laundry tub or in a wet basement Ventilation Donotcover orblock the ventilation openings in the cover of the set When installing the apparatus in a cupboard or another closed location heed the necessary space between the set and the sides of the cupboard Installation Place the apparatus on a flat solid and stable surface that can bear the weight of at least 3 monitors If you use an unstable cart or stand the set may fall causing serious injury to achild or adult and serious damage to the equipment More warnings in the Installation chapter 221 User s Guide 5 221 User s Guide 6 CONTENTS T INTOUUCTION stevie 9 dee anteater tiniest 9 Resolution and bandwidths 9 The memory SYSTOM 220 9 Image conformity CONSISTENCY 9 Calibration adjustments 9 Power SAVING 10 1 2 Versions and Meer Ain tiv eee 10 13 About the manual 2 sche ee SR a eat 10 2s Installation 2 ibe ele SL haley 11 2A PRECAUTIONS iiie aera ee a ra a aaan EA aE Sha iaaa eoa 11 2 2 The package Contents onoi ai a paa 11 2 3 Controls and Connectors
28. x depends on the application An office illumination typically requires 500 Lux A dimmed environment like a softcopy room requires less than 100 Lux Using your display in a controlled and dimmed environment also extends its lifetime because the display can operate at limited brightness and contrast These levels correspond to the calibrated position in most cases A controlled ambient light environment implies the ambient light is as constant as possible Cover windows to keep out the daylight Avoid switching the lights and viewing boxes on and off A consistent environment results in more image consistency and less eye fatigue Avoid reflections in the picture tube Provide indirect lighting Don t place the displays in front of or close to a light source like a window or viewing box although this may be very tempting As a rule of thumb keep viewing boxes at least one metre 3 feet away from the displays Installation 16 3 OPERATION USER CONTROLS Important The best way to adjust and control the display is by using MediCal which displays the ideal test patterns for correct adjustment However in case you do not dispose of MediCal you can control and adjust the display by means of the built in On Screen Display OSD 3 1 Switching on off Power on off Press the Power button 11 on the rear panel to switch on the display The green LED at the front is off when the display is operating If the display star
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