User manual MWD 421
Contents
1. Technical specifications 342. ated ee hy 15 3 4 ie ee bin ee eee 16 B15 ALC aides din ane a eae ne sagt tee 16 3 6 Viewing Status information 17 3 7 Viewing Settings information 18 3 8 Other aAdjUStiMentS 19 4 Advanced settings and Adjustments For service staff 20 4 1 Entering the Adjustments Menu 20 4 2 GEOM t iee iee E ote pene eter decisive 20 453 FOCUS EEE TT ATE 23 AUC A at a eet 24 4 5 White uniformity acsi iiet die ni tet eee pti eit 25 4 6 Color calibration s cccccc a ee a a 25 4 7 Color definition oee i a aa aiai 26 4 8 OtherSettingS 26 4 9 Erase USCrSOUINGS eat eis aie eee le 27 4 10 How to Save changes 2 0 eeeseeeeseeeeeneeeeeeeeeeaeeeeeeeeeeeaeeeteaeeeeeneeeese 28 5 Maintenance nnna oie ti ee ee ee 29 6 30 Appendix A Background information 31 Appendix Technical Specifications 34 MWD 421 User s Guide 5 1 INTRODUCTION 1 1 Overview Resolution and bandwidths The memory system Image conformity and consistency The BARCO MWD 421 is a high resoluti
3. 2001 BARCO nv Allrights reserved Trademark information TrueGrey MediCal BarcoMed and MeDis are registered trademarks of BARCO NV Windows NT is a registered trademark of Microsoft Corporation MWD 421 User s Guide 3 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 CE UL 950 EN 60950 C UL 950 UL 1950 IEC 601 1 2 EN 55022 limit B EN 50082 1 DHHS TITLE 21 Subchapter J Part 1020 e This apparatus is classified as B 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 B 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 likely to cause harmful interfer
4. Actual V frequency horizontal and vertical sync frequencies of the connected video signal They are measured constantly by the display Operation 18 3 7 Viewing Settings information To view the Settings information Explanation of the Settings information menu items SETTINGS INFORMATION ALC Orbiter OFF Power save OFF Booster OFF Display address ak Activity timeout 30 s White level Exit 80 cd m2 The Settings menu You can view the current status of the display s settings You cannot change them in this menu Changing the settings is reserved for trained service staff only Turn the wheel under the bezel to select Settings information in the OSD main menu and press the control knob to enter the selected menu The Settings information menu appears The only control in the menu is Exit ALC Orbiter Power Save Booster Display address Short for Ambient Light Compensation This is a system that when switched on controls the display contrast automatically depending on the ambient light This is a system that when switched on slowly moves the image to prevent phosphor burn in This is the DPMS system that switches down the display automatically after a long period of inactivity The DPMS system is triggered by the PC graphics board This is a system that when switched on boosts the display luminance to obtain the maximum light output This is the display remote addr
5. under the bezel The control knob is used for switching the power on off and selecting and performing functions in the OSD on screen display menu 3 Power indicator 4 USB downstream port 5 Ambient Light Compensation ALC sensor 6 AC power input Accepts a voltage from 90 Vac to 264 Vac automatic 7 Input for R video signal 8 Input for G video signal 9 Input for B video signal 10 Input for Horizontal or Composite sync signal 11 Input for Vertical sync signal 12 Output of serial data RS232 format 13 Input for serial data RS232 format 14 USB upstream port 1 1213 14 15 15 USB downstream ports 3 Installation 9 2 4 Signal connection a Connection of video signals Connection of RGB with separate sync 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 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 The inputs accept the following signals e Video RGB with separate horizontal and vertical sync The video cable has 5 wires Connect the red video signal to the connector R 7 green to G 8 and blue to B 9 Connect the horizontal sync signal to the connector HS CS 10 C
6. been tested for resistance to the following products Cidex Betadine Alcohol Isopropyl and Ethyl Ammonia based cleaners Windex and Aquasonic Gel Maintenance 30 6 TROUBLESHOOTING There appears no image on the picture tube the green LED on the front is out e Check if the power cord is properly connected to the power outlet and to the display Check if contrast and brightness are not set to 0 There appears no image on the picture tube the orange LED is on The display is switched in Stand by manually or by the automatic Power saving system e Press the control knob at the front shortly e Try to get the display active again by pressing any 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 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 in 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 31 APPENDIX A BACKGROUND INFORMATION Power saving system The displ
7. by the automatic calibration which can be done by means of an optical sensor connected to the Sensor plug on the display The sensor is not supplied with the display Introduction 6 Calibration and adjustments Remote control protocols Power saving system 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 which runs under Microsoft Windows NT is especially developed to adjust and check BARCO s medical displays MediCal can be ordered separately A lot of adjustments can also be done on the display itself by means of an extensive on screen menu system accessible by using the control knob at the front The PC on which the remote control software runs can communicate with the MWD 421 through 2 possible interfaces RS 232 and USB For USB the MWD 421 provides a hub function This means that the user can connect peripheral USB devices such as a keyboard or mouse to the display s USB down ports The MWD 421 is equipped with a power saving system When left idle for a certain time the computer connected to the display 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 About the manuals This guide is meant
8. color preset you select depends on the application the display is used in Operation 16 To select a color preset 3 4 Degauss Contrast Brightness Color selection Degauss ALC OFF Status information Settings information Adjustments Exit The OSD main menu 3 5 ALC MAIN MENU Contrast Brightness Color selection Degauss ALC OFF Status information Settings information Adjustments Exit The OSD main menu 1 Turn the wheel under the bezel to select Color selection in the OSD main menu 2 Press the control knob shortly The list with possible color presets appears The currently selected color preset is indicated by a checkmark preceding the name 3 Turn the wheel to select the desired color preset 4 Press the control knob to activate the color preset 5 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 Note Color selection is not possible when the Booster system is on To degauss demagnetize the display 1 Turn the wheel under the bezel to select Degauss in the OSD main menu 2 Press the control knob shortly to degauss As a result the image shivers shortly With this function you can switch Ambient Light Compensation ALC on or off The current setting is indicated in the OSD To change the ALC setting 1 Turn the wheel under the b
9. having made the adjustments select Exit in each appearing menu until the Save Changes message appears Select Yes to save the changes Select No to exit the OSD menus without saving any of the changes you have made Note Any changes in the Other settings menu are saved automatically When the current scanning mode was already stored in the display memory the scanning mode is updated with the new adjustment values When the scanning mode was not yet stored 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 Note The factory aligned scanning modes also appearing in the list cannot be overwritten Advanced 29 5 MAINTENANCE Picture tube Cabinet 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 Clean the cabinet using a recognized cleaning product for medical equipment The cloth you use must be moist not wet The cabinet has
10. indicated in the illustration aside Focus zone You can adjust the focus in 8 independent zones Turn the wheel to obtain an image as sharp as possible in the selected zone Press the control knob to switch to the next zone You have to go through all the zones before you can exit this menu However you need not make changes to every zone if not necessary 1 Dim the light in the room 2 Turn the wheel to select Minimum illuminance 3 Press the control knob shortly to display the adjustment scroll bar 4 Turn the wheel to perform the adjustment Adjust until you are satisfied with the picture contrast 5 Return to the ALC menu by pressing the control knob while the light is still dimmed Upon exiting the adjustment the display measures the ambient light to determine the first reference point 6 Create normal ambient light in the room 7 Turn the wheel to select Maximum illuminance 8 Press the control knob shortly to display the adjustment scroll bar 9 Turn the wheel to perform the adjustment Adjust until you are satisfied with the picture contrast 10 Return to the ALC menu by pressing the control knob while the light intensity is still normal Upon exiting the adjustment the display measures the ambient light to determine the second ALC reference point Advanced 25 4 5 White uniformity a How to make the adjustments b Description of the adjustments V moire canceler H moire canceler V white unifor
11. not supplied by BARCO Always use the Ambient Light Shield during calibration 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 Plug one end of the power cord into the rear of the display connector LINE 6 Plug the other end into a grounded AC power outlet The display automatically adapts to the voltage The voltage range is 90 264 VAC Note The display starts after connecting power 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 12 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 Lux 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 c
12. DIX B TECHNICAL SPECIFICATIONS Picture tube Dot pitch 0 26 mm Faceplate transmission 40 58 Faceplate type AR panel Image representation landscape Light output Calibrated 80 CD m2 Peak 150 Cd m2 small area Resolution Max adress pixels 1844 Max adress lines 1300 Scanning systems Horizontal scanning Multi sync controller controlled Minimum frequency 30 kHz Maximum frequency 106 kHz Minimum blanking 2 us Storable scan frequencies 16 Prealigned scans 5 Vertical scanning Minimum frequency 45 Hz Maximum frequency 160 Hz Minimum blanking 340 us after leading edge Geometry Nominal size 4 3 ratio 392mm x 294mm Nominal size 5 4 ratio 368mm x 294mm Inputs Video BNC connectors Nominal level 0 7 Vpp Sync BNC connectors Nominal level 0 3 4 Vpp Communication inputs outputs RS232 9 pin sub D connector Baudrate 9600 USB 1 up port 4 down ports Power supply Voltage 90 265 V Frequency 48 66 Hz Inrush current lt 25 Ap z 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 Unpacked Packed 32 kg 42 kg Dimensions packing mm H x W x D 740 620 580 Dimensions monitor mm Height 502 with tilt amp swivel 438 without tilt amp swivel Width 500 Depth 501 Modifications reserved
13. 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 power indicator 3 turns green again 3 2 Contrast and brightness control To activate the OSD Contrast and brightness can be controlled through the OSD menus Turn the turning wheel under the bezel from left to right or from right to left As a result the OSD main menu appears Note The wheel should turn over at least 30 degrees before the OSD becomes visible Operation 14 MAIN MENU Contrast Brightness Color selection Degauss ALC OFF Status information Settings information Adjustments Exit The OSD main menu To put conirast in calibrated position Contrast CAL position Manual contrast adjustment Exit Contrast control menu To control contrast manually See Contrast scroll bar The short stroke in the bar indicates the calibrated position the long stroke indicates the current setting The main menu indicates the current setting for contrast and brightness This can be CAL calibrated position This is the preferred setting in a controlled environment e ALC For contrast only This indicates the Ambient Light Compensation ALC is on and contrast is controlled automatic ally depending on the ambient light In that case you cannot control contrast as long as ALC i
14. alibrated 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 13 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 off Power on off Manual stand by Control knob Power indicator The display is disconnected from power only when the power cord is unplugged from the power input 6 Once the power is connected to the power input 6 the display starts To put the display in manual stand by mode press the control knob 2 shortly As a result the power indicator 3 turns orange Note You cannot switch the display in manual stand by when the on screen display OSD is visible
15. ay 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 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 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 80 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 in about 3 seconds The times after which the different steps of power management must become active is set in the PC s display properties Background information 32 Background information 33 APPEN
16. d geometry Horizontal bowing left Advanced geometry Horizontal bowing right Advanced geometry Horizontal skewing left Advanced geometry Horizontal skewing right Advanced geomeiry Corner top left Advanced 23 4 3 Focus a How to make the adjustments Advanced geometry Corner top right Advanced geometry Corner bottom left Advanced geometry Corner bottom right Advanced geometry Horizontal linearity 1 Turn the wheel to select the adjustment you want to make 2 Press the control knob shortly to display the adjustment scroll bar or menu 3 Turn the wheel to perform the adjustment 4 Return to the previous menu by pressing the control knob or selecting Exit when present Note The focus adjustments can best be made acrosshatch pattern with horizontal and vertical lines Advanced 24 b Description of the adjustments FOCUS Static focus Horizontal line focus Focus zone Exit The focus menu Zones for static focus 4 4 ALC How to make the adjustments Minimum illuminance Maximum illuminance Exit The ALC menu Static focus Adjust Static focus to obtain horizontal and vertical lines as sharp as possible in the zones indicated in the illustration aside Horizontal line focus Adjust to obtain horizontal lines as sharp as possible in the zones
17. e level This is the light output of the display when displaying a white field in calibrated position The white level is expressed in Cd m and can be set from 60 to 90 Cd m Orbiter The Orbiter is an internal circuit that when switched on will slightly and slowly move the image to prevent phosphor burn in Power save This setting can switch the automatic power saving system see Introduction chapter on or off Booster This is a system that when switched on boosts the display luminance to obtain the maximum light output When the booster system is on contrast control color selection and ALC are not possible in the main menu 4 9 Erase user settings To erase the user settings With this function you can erase ALL user defined settings from the user scanning modes from the display memory The factory defined settings will not be erased As a consequence erasing the user settings restores the memory as if the display has just left the factory 1 Turn the wheel under the bezel to select Erase user settings 2 Press the control knob A warning message appears reminding you that ALL user settings will be deleted 3 Turn the wheel to select Go ahead text will be highlighted by a red bar 4 Press the control knob Advanced 28 The display will now erase all user settings and return to the Adjustments menu 4 10 How to save changes What happens upon saving Proceed as follows 1 After
18. ence in which case the user will be required to correct the interference at his own expense AN 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 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 e Follow all instructions for operation and use e Warning This apparatus must be earthed e Power requirements connect the apparatus 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 e Mains lead protection U S Power cord Supply cords should be routed so that they are notlikely 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 e Never expose the apparatus to rain or moisture e Never use the apparatus near water e g near a bathtub washbasin swimming pool kitchen s
19. erface connector are both supplied with MediCal 2 Connect the other end of the serial data cable to the Remote In connector 13 on the display s rear panel 3 For daisy chain application connect the Remote Out connector 12 of the first display to the Remote In connector 13 of the next display using a straight D9 D9 cable On USB 1 Plug one end of the USB cable into a USB port of the connected computer 2 Plug the other of the USB cable into the USB upstream port 14 of the display Incase of loop through connection plug one end of a second USB cable into one of the USB downstream ports 15 of the display Plug the other end into the upstream port 14 of the next display 4 The other USB downstream ports of the monitor 15 can be used for the connection of peripheral equipment like a mouse keyboard scanner etc Note Do not connect both RS 232 and USB to prevent conflicts Installation 11 c Connection of optical sensor Connection of an RS 232 sensor d Connection of power LINE oltage Range 00 240 V Power cord connected to Line input To calibrate the display you need to connect an optical sensor RS 232 sensor Connect the sensor to the Sensor connector 1 at the front USB sensor Connect the sensor to the USB downstream connector 4 at the front Notes The display supports the DTP 92 from X Rite as optical sensor The optical sensor is
20. ess When several displays are remotely controlled e g by means of the MediCal software each display must have a unique address Operation 19 Activity timeout White level 3 8 Other adjustments This is the time after which the display interrupts data communication with a computer when the computer does not respond anymore After the timeout has expired the control of the display is returned to the OSD menu system This is the white level expressed in 2 the display obtains when displaying a white field in calibrated position The main menu item Adjustments is reserved for trained service staff and is therefore protected by a password Operation 20 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 Entering the Adjustments menu To enter the menu 1 Turn the wheel under the display bezel from left to right or from right to left to activate the On Screen Display OSD main menu Contrast Brightness pate ure gage 2 In the main menu turn the wheel to select ALC OFF Adjustments Status information Settings information 3 Press and hold the control knob for a few seconds The Adjustments menu appears The OSD main menu Note If you press only shortly the message Service protec
21. ezel to select ALC in the OSD main menu 2 Press the control knob shortly to change the setting Note ALC is not possible when the Booster system is on Operation 17 3 6 Viewing Status information You can view the current status of the display This cannot be changed To view the status Turn the wheel under the bezel to select Status information information in the OSD main menu and press the control knob to enter the selected menu The Status information menu appears The only control in the menu is Exit Explanation of the Display Name This is the display type Status information menu Serial Number This is the display s items serial number Mode Name The currently selected STATUS INFORMATION EN scanning mode If the MODE 2G ZTEL connected signal is not Serial Number 5114147 Mode Name New mode yet stored in the Mode H frequency 48 32 kHz memory the menu Mode V frequency 59 94 Hz Software Version 1 01 displays New mode Run time 50 hours H frequency These are the horizontal Actual V frequency 75 00 Hz Exit Mode V frequency and vertical sync frequencies of the currently selected scanning mode These are the figures stored in Status information menu the memory Software Version The internal software version Run time The total operating time since production ond anymore Actual H frequency These are the actual
22. for people who want to install and use the MWD 421 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 7 2 INSTALLATION 2 1 Precautions 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 The MWD 421 display The accessory box in which you found this manual Note The black plastic shield ambient light shield inside the accessory box is meant to be used during conformity calibration with an X Rite DTP92 optical sensor Installation 8 2 3 Controls and connectors 1 Connector for optical sensor RS232 format 2 Control knob consisting of a push button at the front and a turning wheel
23. ink laundry tub orinawet basement Ventilation Do not cover or block 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 MWD 421 User s Guide 4 CONTENTS 1 IMTOCUGTION et ee Ee a 5 WAV OVEM EW liek Uplate tied etal 5 1 2 th man alS isr noei eo 6 2 WMStallaton 7 2 1 Precautions A ee ee 7 2 2 The package 7 2 3 Controls 1 eeeeceeeeeeeeeeeeeeeeeeteeeeeaeeseeseaeeeeeeseaeeeeeeeeaeens 8 24 Signal COMNECUON 9 2 5 Positioning 11 3 Operation User controls 13 Sit Switching Onis Off 13 3 2 Contrast and brightness control 13 3 3 Color Selection
24. lor temperature in Kelvin or x y Se eRe TRANS chromaticity coordinates V User preset To define a color preset proceed as follows Exit 1 Turn the wheel under the bezel to select the color preset you want to define 2 Press the control knob to activate the preset and enter its color definition menu The color definition menu 3 Turn the wheel to select the parameter you want to change x y or K Kelvin 4 Press the control knob The corresponding scroll bar appears 5 Turn the wheel to change the selected parameter 6 Press the control knob to return to the color definition menu The modified preset is preceded by a check mark in the menu 4 8 Other settings a To change the 1 Turn the wheel to select the setting you want settings to change 5 Press the control knob shortly to change the selected setting on or off 6 For Display address and White level you can change the setting by turning the wheel Return to the Other settings menu by pressing the control knob For the other settings the new status instantly appears in the other settings menu b Explanation of the Display address Other settings menu In multi head systems multiple displays items controlled by one system each display must have a different address With this setting you can set the display address from 1 to 16 Advanced 27 Display address White level Orbiter Power save Booster Exit The other settings menu Whit
25. mity AX white uniformity Exit The white uniformity menu 1 Turn the wheel to select the adjustment you want to make 2 Press the control knob shortly to display the adjustment scroll bar 3 Turn the wheel to perform the adjustment 4 Return to the previous menu by pressing the control knob or selecting Exit when present V moire canceler Increase in small steps if you notice a moire pattern of horizontal lines Remark over adjustment results in degraded image quality H moire canceler Adjust if you notice a moire pattern of vertical and or diagonal lines Remark over adjustment results in degraded image quality V white uniformity Adjust on a completely white image Adjust to obtain a uniform white image in the center area of the screen Remark Adjust in small steps After each step the image will shiver because of an automatically generated degauss H white uniformity Adjust on a completely white image Adjust to obtain a uniform white image in the remaining area of the screen Adjust slowly 4 6 Color calibration To calibrate the display proceed as follows 1 Connect the Optisense and apply the black shield to the sensor see chapter Installation 2 Select the Color calibration menu 3 Follow the instructions on the screen Advanced 26 4 7 Color definition With this menu you can define or change the EEEE TTS color temperature of the 5 color presets You can Blue base define the co
26. on color display Its outstanding visual performance combining a 2 MegaPixel resolution with a high brightness makes it ideal for diagnostic imaging and many other medical applications The MWD 421 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 internal memory system can contain the adjustments for 16 different scanning formats the so called scanning modes Five of them are adjusted and stored in the factory Each scanning format is characterized by its sync signals The display s internal 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 If the connected signal is not stored the display picks the settings from the stored scanning mode that best matches the connected signal The display should then be adjusted reserved for qualified staff and stored Image conformity and consistency are the keywords In our factory the MWD 421 displays are perfectly adjusted and calibrated before they are shipped to the customer Internal circuits ensure display consistency over time Conformity with the original image quality is guaranteed
27. onnect the vertical sync signal to the connector VS 11 Video RGB with external composite sync The video cable has 4 wires Connect the red video signal to the connector R 7 green to G 8 and blue to B 9 Connect the composite sync signal to the connector HS CS 10 Video RGB with internal composite sync sync on video The video cable has 3 wires Connect the red video signal to the connector R 7 green to G 8 and blue to B 9 Notes video inputs cannot be connected in loop through daisy chain e The required video amplitude 700 mV dB The required sync amplitude 0 3 4 Vpp Installation 10 b Connection of data signals RS 232 connection of display ae USB cable connected to the upstream port 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 On RS 232 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 int
28. ontrol 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 1 Turn the wheel under the bezel to select Brightness in the OSD main menu 2 Press the control knob shortly The brightness control menu appears In the brightness control menu select Brightness CAL position and press the control knob shortly 1 Turn the wheel under the bezel to select Brightness in 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 4 Turn the wheel under the bezel 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 In the 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 Color selection COLOR SELECTION Clear base Blue base P45 simulation P104 simulation V User preset Exit You can select from five different color presets Selecting another color preset will change the color temperature of the image from rather reddish over neutral to rather bluish The
29. s switched on 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 For contrast only this can also mean the Booster system is on If so this is indicated in the OSD when you select the Contrast control When the Booster system is on you cannot control contrast 1 Turn the wheel under the bezel 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 1 Turn the wheel under the bezel 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 Manual contrast adjustment and press the control knob shortly The contrast scroll bar appears 4 Turn the wheel under the bezel 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 Operation 15 To put brightness in calibrated position Brightness Brightness CAL position Manual Brightness adjustment Exit Brightness control menu To control brightness manually _ Sa a Brightness scroll bar The short stroke in the bar indicates the calibrated position the long stroke indicates the current setting 6 Inthe contrast c
30. ted appears 4 2 Geometry a How to make the 1 Turn the wheel to select the adjustment you adjustments want to make 2 Press the control knob shortly to display the adjustment scroll bar or menu 3 Turn the wheel to perform the adjustment 4 Return to the previous menu by pressing the control knob or selecting Exit when present Advanced 21 b Description of the adjustments GEOMETRY Auto geometry Width Horizontal position Height Vertical position Rotation Blanking Advanced geometry Exit The geometry menu Auto geometry Automatically adjusts geometry to almost 100 perfect This adjustment requires an image that covers the full screen from left to right and from top to bottom E g the desktop pattern of a computer is a good image Width Rotation Blanking Blanking left Advanced 22 Blanking Blanking right Blanking Blanking top Advance
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