Ningbo CM-1900P User Manual
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Ningbo CM-1900P User Manual

Lcd chart monitor
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LCD CHART MONITOR
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C M - 1 9 0 0 P
C M - 1 9 0 0 C
USER MANUAL

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Summary of Contents for Ningbo CM-1900P

  • Page 1 LCD CHART MONITOR C M - 1 9 0 0 P C M - 1 9 0 0 C USER MANUAL...
  • Page 2 There will be no futhur notification if there is any changes in the product spec. Ningbo Ming Sing Optical R&D CO., Ltd reserves the right to make changes to the product described in this manual and make no futhur notification. The devices already sold will not subject to such changes.

  • Page 3: Table Of Contents

    Contents 1．Introduction......................4 1.1 Product features and application scope.…..…………...……………………. 错 误！未定义书签。 1.2 Product Parameter.................... 4 1.3 Main performance index.................. 5 2. Safety precautions....................13 2.1 Symbols......................13 2.2 Precautions before use..................13 2.3 Precautions during operating the device............14 2.4 Precautions after use..................14 2.5 Device check and maintain................

  • Page 4: 1．Introduction

    1. Introduction Product name: Chart display Product model: CM1900P, CM1900C, VX22 Intended use: The product has been designed to measure visual acuity. It consists of a chart display unit and a radio remote control. Contraindication: None FIG. 1 1.1 Product features and application scope a.

  • Page 5: Main Performance Index

    Polarizer: frame: 169mm(L)×43mm(W), lens: 42mm(L)×30mm(W) Red/green filter: frame: 169mm(L)×43mm(W), lens: 42mm(L)×30mm(W) Storage and transportation environment: Temperature: -40℃-+50℃ Humidity: ≤80% Air pressure: 700hPa-1060hPa(transportation), 500hPa-1060hPa(storage) Working environment: Temperature: -10℃-+50℃ Humidity: ≤80% Air pressure: 760hPa-1060hPa Power supply: a. Voltage: 100-240V～, 50/60Hz b. Input power: 75VA Software operating environment Software version: V2 System hardware platform(minimum configuration)
  • Page 6 1.3.2.1 Charts visiual test range Visiual test results will be displayed in decimals, including 14 types including 0.1, 0.12, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.2, 1.5, 2.0 etc. 1.3.2.2 Number of charts Lines represents results about 0.2 must contain no less than 3 charts. 1.3.3 Chart specification 1.3.3.1 E chart 1.3.3.1.1 Shape of E chart...
  • Page 7 =1.995′ =1.585′ =1.259′ =1.000′ -0.1 =0.794′ =0.631′ -0.2 =0.501′ -0.3 1.3.3.2 C chart, 123 chart and animal chart Fig 3. Chart C chart adopts Landolt ring. The width of the black ring and the gap both are 1/5 of the ring’s outer diameter, as shown in picture 3 above.
  • Page 8 =1.995′ =1.585′ =1.259′ =1.000′ -0.1 =0.794′ =0.631′ -0.2 =0.501′ -0.3 1.3.3.3 Animal chart, 123 chart and ABC chart 1.3.3.3.1 Animal chart 1.3.3.3.2 123 Chart 1.3.3.3.3 ABC chart Chart specification: animal chart, ABC chart and 123 chart, chart maximun size (length) and scale is similiar to E chart. At 5m, chart for 0.1 indication value biggest size is 72.72mm (equal to the E chart size for 0.1 visiula acuity), e.g: 1.3.3.4 polarization charts and red/green charts(each with special test glasses) Binocular balance on polarized red/green background: test of binocular balance...
  • Page 9 Red/green balance: test of sphere with red and green chart Worth chart: test of simultaneous vision, binocular fusion and euphoropsia binocular Aniseiconia: strabismus and Binocular aniseikonia test of Shober: test for recessive strabismus MKH 01 Cross(polarized and red/green): test for recessive strabismus Phoria(polarized/ red/green): test for recessive strabismus...
  • Page 10 Polarized/ Red/green: test for Rotational esotropia Polarized and red/green MKH 03 Double indicator:test for binocular balance Polarized and red/green binocular balance test Stereoscopy (polarized and red/green): test for stereoscopic vision 1.3.3.5 Radiation astigmatism chart Clock chart: charts with dotting line and solid line, functions are the same, to test astigmatism...
  • Page 11 axis and level Jackon cross: test for sphere(cooperate with cylinder) Dot chart: test for astigmatism axis and degree Astigmatism clock 1.3.3.6 Color blind chart Charts for color anomalopia 1.3.3.7 Dot chart martensitic rod lens Test for heterophoria(with...

  • Page 12: Symbols

    1.3.4 Charts image The image of charts displayed on the chart display screen shall be in thick ink, uniform, no bright dot, with clear line and no ink dot on the background, 1.3.5 Brightness The test area of the chart display screen brightness should be around 80-320cd/m 1.3.6 Chart display performance 1.3.6.1 Remote control Chart display operations are realized through remote control.

  • Page 13: Precautions During Operating The Device

    Warning Install on the flat table or wall arm. The device falling down may cause misfunction.  Note Before use the device, must understandard the unit safety precautions and operation  specifications. Usage for unintended purpose will casue device failure or other adverse results. The device should not get wet in the rain, put in water or places with mist.

  • Page 14: Precautions After Use

    Note before testing human eyes, should adjust the level of the patient eyes to make sure they look  directly at the device. Missing of this step will influence the accuracy of the test results. If there is smoke or any other strage smells coming from this device during use, turn off the ...

  • Page 15: Device Dispose

    Do not put the chart display into any liquid. It will break the device.  Do not touch the optical parts. It may leave finger print or grease on the lens to influence the  device performance. Note: there might be some pixels disappear on the screen or have some red, blue or green pixels. This does not mean the LCD penal is broken.

  • Page 16: Remote Control Batteries

    C. Install the chart display on to the wall with the wall mount kit. Then use screws to fix it to prevent it falling down, direction as shwon in below picture. 4.2 Remote control batteries As shown in below picture. The remote uses 2 batteries, #5 battery and voltage 1.5V.

  • Page 17: Basic Operation

    Area 1. Chart choose Area 2. Test choose Area 3. Shielding type choose Area 4. Operational key Area 5. Setting (general type) 5.2 Basic operation A: staring: plug in and press the press the powe rswitch. B: stopping: press the power stiwch to stop the device. C: test choose: refer the the remote control picture in the user manual, press the button for the test needed.
  • Page 18 123 Chart to children test. These 5 charts can also be switched with ， button on the remote control. Press together with button, the size of the chart can be changed.Press button can choose more different charts. Other charts operation is similiar to E chart. H: shileding: press the button to choose single letter shiled, single ，...

  • Page 19: Self-Diagnostic And Maintenance

    Self-diagnostic and maintenance 6.1 Trouble shooting When there is any problems during using the device, please power off and re-start it. If there is any other problem, please contact our after sales service department. 6.2 Cleaning and sterilizing 1） Clean the chart display in a clean environment. Use soft clean cloth to clean the cover.(note: do not use any corrosive solvent to avoid damaging the cover) 2）...
  • Page 20 be installed and used according to the EMC information stated in this manual. Portable and mobile communication equipments might influence the performance of this equipment. Must use the cables and accessories come with the device, cabe information is shown as below: Name Model Length...
  • Page 21 IEC60601 electromagnetic Immunity test Coincidentdet level Test level environment——instruction The ground should be wood, concrete ±6kV contact discharge ±6kV contact ortile. If it is covered with synthetic GB/T 17626.2 ±8kV air discharge ±8kV air material, the relative humidity shall be at least 30%.
  • Page 22 Conduced RF Portable and mobile RF communications equipment GB/T 17626.6 should be used no closer to any part of the 150 kHz to 80 MHz KR/RM-9800, including clables, than the recommended separation distance calculated from 3 V/m the equation applicable to the frequency of the 3 V/m Radiated RF 80 MHz to 2,5 GHz...
  • Page 23 MSOC distributor: Product modle and name: CM-1900P, CM1900C, VX22 2. Product serial number(provided on the product label) 3. Description: detailed problem description of the problem...

This manual is also suitable for:

Cm-1900cVx22

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