CT-80 Instruction Manual

INTRODUCTION Thank you for purchasing the TOPCON Computerized Tonometer CT-80. (To get the best use from the instrument, please carefully read these instructions and keep this Instruction Manual in a convenient location for future reference.) This instrument features the following: • An exact, non-contact intraocular pressure measurement that can be done by air ejection. • An alignment bar that enables easy operation.

This text outlines the Computerized Tonometer CT-80 and describes basic operations, troubleshooting, checking, maintenance and cleaning. To encourage the safe, efficient use of this instrument and prevent danger to the operator and others, we suggest you carefully read the “Displays for Safe Use” and the “Safety Cautions”. Again, please keep this Instruction Manual in a convenient location for future reference.

Precautions •

This machine is a precision instrument; install it in a place set to the following conditions: temperature (10∼60°C), humidity (30∼85%) and atmospheric pressure (70∼106KPa). Avoid direct exposure to sunlight.

•

To ensure smooth operation, install the instrument on a level place free of vibrations. Also, do not place any objects on the instrument.

• • •

Before using the instrument, connect all cables correctly.

•

Use the specified source voltage. When not in use, turn the power off and put the measuring window cap and dust cover on. To ensure a correct reading, do not soil the measuring window with finger prints, dust, etc. Also, do not touch the measuring nozzle except when cleaning.

1

DISPLAY FOR SAFE USE In order to encourage the safe use of the product and prevent any danger to the operator and others or damage to properties, important warnings are placed on the product and inserted in the instruction manual. We suggest that everyone understand the meaning of the following displays and icons before reading the “Safety Cautions” and text.

DISPLAY

MEANING

WARNING

Ignoring or disregarding this display may lead to death or serious injury.

CAUTION

Ignoring or disregarding this display may lead to personal injury or physical damage.

• Injury refers to cuts, bruises, sprains, fractures, burn, electric shock, etc. • Physical damage refers to extensive damage to buildings or equipment and furniture.

ICONS

MEANING This icon indicates Hazard Alerting (Warning). Prohibition. Specific content is expressed with words or an icon either inserted in the icon itself or located next to the icon. This indicates Prohibition. Specific content is expressed with words or an icon either inserted in the icon itself or located next to the icon. This indicates Mandatory Action. Specific content is expressed with words or an icon either inserted in the icon itself or located next to the icon.

2

SAFETY CAUTIONS WARNING Icons

Prevention item

Page

To avoid electrical shock, do not open the instrument. Refer all servicing to qualified personnel.

45

To avoid electric shocks, do not remove the covers from the bottom and top surfaces, TV monitor, measuring unit, etc.

45

To prevent shock hazard, do not allow water or other foreign matter to enter into the instrument.

—

To avoid fire and electric shocks in case of tumbling, do not place a cup or vessel containing water/fluid on the instrument.

—

To avoid electric shocks, do not insert objects or metals through the vent holes or gaps or contain them inside the machine body.

—

To avoid electrical shock and fire, unplug the power cable before removing the fuse cover. Additionally, be sure to replace the fuse cover before plugging in the power cable.

55

Use only the attached fuses. Using other fuses may cause a fire.

55

Should any anomaly, such as smoke, occur, immediately switch OFF the power source and unplug the power cable. Continued use ignoring the condition may cause fire. Contact your dealer for repair.

—

3

SAFETY CAUTIONS

CAUTION Icon

4

Prevention item

Page

To avoid potential injury, hold the instrument in the proper position.

13

To avoid electrical shock, do not handle the power plug with wet fingers.

14

Never insert your fingers under the measuring head. ∗ Inform the patient of this, too. Careless insertion of fingers may cause injury by pinching.

30

Never insert your fingers under the measuring head. ∗ Inform the patient of this, too. Careless insertion of fingers may cause injury by pinching.

34

Do not use or apply any spray-typed cleaner near the instrument. If a drop of cleaner remains inside the measuring nozzle, the patient’s eye may be injured during measurement.

56

Before carrying the instrument, be sure to affix it firmly by turning the fixing screw at the base. If the instrument is moved with the screw loosened, it may result in damage to the instrument.

13

When moving the instrument, be sure to hold it at the bottom surface with two people. Carrying by one person may cause back injury or injury by falling parts. Also, holding areas other than the bottom surface may cause pinching fingers between parts and injury by falling parts as well as damage to the instrument.

13

Before measuring, set the safety stopper. If the safety stopper is not set, it may cause injury to the eye that comes in contact with the measuring window glass. Set the safety stopper separately for the right and left eyes.

31

When setting the safety stopper, do it from the instrument side (safety stopper knob side). Setting from another position does not easily allow you to check the positions of the measuring window glass and the patient’s eye and may cause injury to the eye that comes in contact with the measuring window glass.

31

To clean the measuring window glass and the window glass inside the measuring nozzle, use ethanol. Using other chemicals may cause damage to the patient's eye during measurement.

52 53

USAGE AND MAINTENANCE PURPOSE This tonometer “CT-80” is a precision electrical device for medical use that must be used under the instruction of a doctor.

USER MAINTENANCE To maintain the safety and performance of the equipment, never attempt to do maintenance on your own. Ask our serviceman for repair except for the items specified here which can be maintained by the user. For details, follow the instructions. Fuse replacement The primary fuses for the main body may be replaced by a non-trained service technician. For details, refer to “Replacing the Fuse” on page 55. Cleaning of measuring window Cleaning of the measuring window glass is possible. For details, refer to the instructions in “Cleaning the Measuring Window Glass” on page 52. Cleaning of window inside the nozzle Cleaning of the window inside the nozzle is possible by following the instruction in “Cleaning the Window Glass inside the Nozzle” on page 53.

ESCAPE CLAUSE • TOPCON shall not take any responsibility for damage due to fire, earthquakes, actions by a third party or other accidents, or the negligence and misuse of the user and use under unusual conditions. • TOPCON shall not take any responsibility for damage derived from the inability to use this equipment, such as a loss of business profit and suspension of business. • TOPCON shall not take any responsibility for damage caused by operations other than those described in this Instruction Manual. • Diagnoses shall be made on the responsibility of pertaining doctors and TOPCON shall not take any responsibility for the results of such diagnoses.

5

WARNING INDICATIONS AND POSITIONS To ensure the safe usage of this equipment, precaution indications are provided. Abide by the following warning instructions. If any of the following labels are missing, please contact us at the address printed on the back cover of this manual.

WARNING • To avoid electrical shock, do not open the instrument. Refer all servicing to qualified personnel.

CAUTION • To avoid potential injury during operation, do not touch the patient’s eyes or nose with the instrument.

WARNING • To avoid electrical shock, do not open the instrument. Refer all servicing to qualified personnel.

CAUTION • To avoid potential injury, insure that the safety stopper knob is engaged prior to use.

WARNING • Electrical shock may cause burns or possible fire. Turn the main power OFF and UNPLUG the power cord before replacing the fuses. Replace only with fuses of the correct rating.

6

CONTENT Introduction

1

INDIVIDUAL OPERATIONS

Display for Safe Use

2

How to Print Out Measurement Values

42

Safety Cautions

3

How to Correct Measurement Values

43

Usage and Maintenance

5

Input/Output via RS-232C

44

Escape Clause

5

Warning Indications and Positions

6

BEFORE REQUESTING SERVICE Checking Operations

NAMES OF COMPONENTS Main Body Components

8

Control Panel Components

9

45

REFERENCE Optional Accessories

46

Monitor Screen Components

10

Specifications & Performance

46

Contents of Printer Output

11

RS-232C Communication Specifications

47

Standard Accessories

12

PREPARATIONS How to Install the Instrument

13

How to Connect the Power Cable

14

How to Connect External I/O Terminals

14

Initial Settings

15

How to Set Printer Paper

23

How to Reset from Power Save Status

28

MAINTENANCE AND CHECKING Accuracy Maintenance

52

Special Notes on Cleaning

56

BASIC OPERATIONS Preparations Before Measurement

29

Measurement Under Auto Mode

33

Measurement Under Manual Mode

38

How to Delete Measurement Values

41

7

COMPONENTS MAIN BODY COMPONENTS

Measuring head

TV Monitor Measuring switch Control lever Clamping knob Safety stopper knob Control panel External I/O terminal

Power lamp Fixing knob (used to stop movements during removal) Forehead rest Measuring window Measuring nozzle Height mark Chinrest pad pin Chinrest Chinrest handle

Power switch Power cable Adjusting knob

8 COMPONENTS

Measuring window cap

CONTROL PANEL COMPONENTS Clear switch Print switch

Down switch Menu switch

Air check switch Auto/Manual switch

Select switch

Range switch Up switch

Print switch ................... Prints out the screen readings. When there is no reading, holding the switch down feeds the paper. Range switch ................ Switches the range between 0-30 and 0-60. Clear switch .................. Deletes all the measurement values from the screen. Menu switch .................. Displays the Menu screen. Auto/Manual switch...... Switches the mode between auto and manual. Also, when selecting menu software, it moves the cursor right ( ). Air check switch ........... Performs an air check. Also, when selecting menu software, it moves the cursor left ( ). Down switch ................. When selecting menu software, it moves the cursor down ( ). Up switch....................... Range switch. When selecting menu software, it moves the cursor up ( ).

9 COMPONENTS

MONITOR SCREEN COMPONENTS Measurement Screen (Auto mode, alignment) Target eye Measurement mode Measuring range Alignment dot

Outer alignment mark Alignment bar Inner alignment mark

Measurement Screen (Manual mode, alignment OK)

Outer alignment mark Inner alignment mark (alignment OK)

Menu Screen

Cursor

10 COMPONENTS

CONTENTS OF PRINTER OUTPUT

Bar code

Equipment No.

Work ID No.

ID No.

Time/Date display

Measured eye pressure values

Average eye pressure values

Message column

11 COMPONENTS

STANDARD ACCESSORIES The following are the standard accessories. The figures in parentheses are the quantities. Please check to see that all accessories are contained. Power cable (1)

Rail cover (2)

Printing paper (2)

Chinrest pin (2)

Chinrest pad (1)

Silicone cloth (1)

Fuse (2) * Different by destinations

Dust cover (1)

Cleaning kit (1)

Instruction Manual, Unpacking and Assembly (1 each)

Window glass cleaning procedure (1)

12 COMPONENTS

PREPARATIONS HOW TO INSTALL THE INSTRUMENT

1 2

CAUTION

Before carrying the instrument, be sure to affix it firmly by turning the fixing screw at the base. If the instrument is moved with the screw loosened, it may result in damage to the instrument.

CAUTION

When moving the instrument, be sure to hold it at the bottom surface with two people. Carrying by one person may cause back injury or injury by falling parts. Also, holding areas other than the bottom surface may cause pinching fingers between parts and injury by falling parts as well as damage to the instrument.

CAUTION

To avoid potential injury, hold the instrument in the proper position.

Fasten the clamping knob. Hold the instrument body firmly at the specified positions and place it on the automatic instrument table. For the automatic instrument table, see “OPTIONAL ACCESSORIES” on page 46.

Fixing knob Specified holding positions

3 4

Holding the instrument

After installing the instrument, loosen the fixing knob. Now the body components can be moved. If the machine body is slightly off level, properly turn the adjusters at the four corners for fine adjustment. Do not unscrew the adjusters more than 1cm.

13 PREPARATIONS

HOW TO CONNECT THE POWER CABLE CAUTION

1 2

3

Make sure the

To avoid electrical shock, do not handle the power plug with wet fingers.

POWER SWITCH

is OFF.

Attach the power cable to the machine body.

Plug the power cable into the 3-pin AC receptacle with grounding.

HOW TO CONNECT EXTERNAL I/O TERMINALS RS-232C OUT This machine can be connected to another device, including a personal computer via the RS-232C OUT terminal.

1 2

Connect the cable to the RS-232C OUT terminal of this machine. Connect the other cable end to another device.

RS-232C IN Output terminal Input terminal This machine can be connected to another device, including a bar code reader via the RS-232C IN terminal.

1 2

Connect the cable to the RS-232C IN terminal of this machine. Connect the other cable end to the external device.

14 PREPARATIONS

INITIAL SETTINGS During the initial setting, date, time, operating time of the power save function, RS232C, mode of average value, buzzer and message can be set. Preparations

1 2

Make sure the power cable is connected. For connection, see “HOW TO CONNECT THE POWER CABLE” on page 14. Check the no-patient condition of the instrument and turn the

• MEMO

POWER SWITCH

ON.

When the machine is moved from a cold room to a warm room or when the room temperature suddenly rises, it may cause dewing inside the machine and disable measurement. In this case, leave the machine alone for about 30min until it reaches room temperature.

Displaying The Menu Screen

1 2

Make sure that the Measurement screen is displayed. Press on the control panel. The Menu screen is displayed.

Returning To The Measurement Screen

1

Press

,

on the control panel, move the cursor to “EXIT” and press

MEASUREMENT SWITCH

.

Measurement switch

Or, press

on the control panel. The Measurement screen returns.

15 PREPARATIONS

Time/Date Setting Example of operation: Illustrations show time setting.

1 2

Press Press press

on the control panel to get the Menu screen. ,

on the control panel, move the cursor to “DATE/TIME SET” and

MEASUREMENT SWITCH

.

The Date/Time setting screen is displayed.

3

Make sure that the display “BATTERY → O.K.” appears.

If the display is “BATTERY → N.G.”, the built-in clock battery is used up. Contact your dealer. Additionally, when the battery becomes exhausted, time and date items are not printed and “DATE” is displayed instead.

4

Press

,

on the control panel, move the cursor to “HOUR” and press

MEASUREMENT SWITCH

16 PREPARATIONS

.

5

6

Press of the control panel, renew figures and press , The renewed figures are inputted.

Press

,

MEASUREMENT SWITCH

.

of the control panel, move the cursor to “EXIT” and press

MEASUREMENT SWITCH

.

Date and other items can also be renewed at the same time. Setting The Power Save Time A time for the power save function to achvale can be selected from 10, 20, 30 or 60min. For shipment, 10min. is set.

1 2

Return to the Menu screen. Press press

3

Press

,

on the control panel, move the cursor to “POWER SAVE TIME” and

MEASUREMENT SWITCH

,

. The Power Save Time Setting screen is displayed.

on the control panel and change the power save time.

17 PREPARATIONS

5 ↔ 10 ↔ 20 ↔ 30 ↔ 60

4

Press

MEASUREMENT SWITCH

. The Menu screen is displayed.

RS-232C INPUT/OUTPUT Settings For shipment, settings are EQUIPMENT (Equipment No.) No.1, FORMAT (communication mode) OFF, and SPEED (communication speed) 2400 Each time Example: is pressed, theequipment display changes , Setting the No. as follows:

1 2

Return to the Menu screen. Press

,

of the control panel, move the cursor to “RS-232C MODE” and press

MEASUREMENT SWITCH

.

The RS-232C Mode is displayed.

18 PREPARATIONS

3

Press

,

on the control panel, move the cursor to “EQUIPMENT” and press

MEASUREMENT SWITCH

4

Press

,

.

on the control panel, change the equipment No. and press

MEASUREMENT SWITCH

.

The equipment No.(EQUIPMENT) can be selected from 0000 to 0099. Each time is pressed, the display changes as follows:

,

OFF ↔ MODE1 ↔ MODE2 ↔ MODE3 ↔ MODE4 ↔ When setting the speed, the display changes from 2400-9600 each time pressed.

is

,

2400 ↔ 9600

“EQUIPMENT” and “WORK ID NO.” can be reset by pressing

5

Press

,

.

on the control panel, move the cursor to “EXIT” and press

MEASUREMENT SWITCH

. The Menu screen returns.

19 PREPARATIONS

Setting The Average Value Mode The average value display of the measurement values can be selected from integer and decimal displays. For shipment, the integer display is set.

1 2

Return to the Menu screen. Press press

,

on the control panel, move the cursor to “AVERAGE MODE” and

MEASUREMENT SWITCH

.

The Average Value Mode screen is displayed.

3

Press

20 PREPARATIONS

,

on the control panel to change the mode.

15

: The average value is displayed as an integer (by rounding fractions to the nearest whole number). 15.0 : The average value is displayed up to one decimal (by rounding fractions to the nearest tenth).

4

Press

MEASUREMENT SWITCH

. The Menu screen returns.

Setting The Buzzer The buzzer can be turned ON/OFF by pressing the switches on the control panel.

1 2

Return to the Menu screen. Press

,

on the control panel, move the cursor to “BUZZER SET” and press

MEASUREMENT SWITCH . The Buzzer Setting screen is displayed.

3

Press

,

on the control panel to select ON/OFF.

21 PREPARATIONS

4

Press MEASUREMENT SWITCH . The Menu screen returns.

Message Input You can add a brief message to the printout.

1 2

Return to the Menu screen. Press press

,

on the control panel, move the cursor to “MESSAGE INPUT” and

MEASUREMENT SWITCH

.

The Message Input screen is displayed.

Input column

Selection column

3

Press on the control panel to move the blinking icon to a character , , , in the selection column for input.

22 PREPARATIONS

■ : A space for 1 character (Use this to delete a character, too.) STEP : The blinking icon of the input column moves right. BACK : The blinking icon of the input column moves left.

4

5

Press MEASUREMENT SWITCH . The character selected by the blinking icon is inputted.

Press

,

,

,

on the control panel, move the blinking icon in the selection

column to “EXIT” and press

MEASUREMENT SWITCH

.

The Menu screen is displayed.

HOW TO SET PRINTER PAPER Auto Setting

1

Press the printer cover with your thumb, slide it aside and remove.

When the right/left end is reached, the blinking icon goes down to the next line. A message can contain up to 3 lines, 20 characters per line.

Printer cover

23 PREPARATIONS

2

Slide the paper roll onto the paper shaft, paying attention to the direction of unwinding, and pull out the top of the paper 7-8cm.

Unwinding direction

3

Insert

the

paper straight into the printer

along the paper guide.

4 5

6

When the top of the paper stops inside the printer, press to further insert the paper into the printer. Paper feeding starts when the top of the paper reaches a certain depth inside the printer. When the top of the paper comes out 1cm or so from the outlet, release At this moment, hold the top of the paper firmly so that it is not rolled back.

.

Turn the paper retainer lever to the illustrated position, and pull out the paper 2-3cm so that it comes out straight from the outlet.

24 PREPARATIONS

Paper retainer lever

7

Return the paper retainer lever back to its original position.

8

Reset the printer cover, holding the top of the paper outside.

The paper is not fed unless the paper retainer lever is lowered.

Use the following 58mm wide printer paper: TF50KS-E2C Using another paper may cause a printing noise or thin prints.

25 PREPARATIONS

Manual Setting

1 2

Press the printer cover with your thumb, slide it aside and remove. Slide the paper roll onto the paper shaft, paying attention to the direction of unwinding, and pull out the top of the paper 7∼8cm.

3

Turn the paper retainer lever in the arrow direction.

4

Cut the paper on the control lever Paper side atretainer about 2cm. lever

Control lever

Cut here

26 PREPARATIONS

5

Insert the paper straight into the printer along the paper guide.

6

Further insert the paper and draw out the top of the paper from the outlet.

7

Adjust the paper so that it comes out straight from the outlet, and then lower the paper retainer lever.

The paper does not easily pass through the printer unless it is cut on the control lever side.

27 PREPARATIONS

8

Set the printer cover, holding the top of the paper outside.

If the paper is jammed, turn the paper retainer lever to the illustrated position, and take out the jammed paper from the printer.

HOW TO RESET FROM POWER SAVE STATUS This machine employs a power save function. If the machine is not used during a set time, the power save function stops supplying power to the monitor and CCD camera. Under the power save status, the POWER lamp of the control panel flashes.

1

Press MEASUREMENT SWITCH . The Monitor screen is displayed in a few seconds, when the measurements become available.

After resetting, the measurement mode is AUTO and the measuring range is 0-30. Also, values measured before power saving are deleted.

28 PREPARATIONS

BASIC OPERATIONS PREPARATIONS BEFORE MEASUREMENT Turn ON the Power

1 2 3

Make sure the power cable is connected. For connection, see “HOW TO CONNECT THE POWER CABLE” on page 14. Make sure the instrument is in the no-patient condition and turn ON the POWER SWITCH . The Title screen is displayed, and then the Measurement screen is displayed.

Air Check This machine is equipped with a function for checking the correct operations measurement system inside the instrument.

1 2 3

Remove the measuring window cap. Press on the control panel. Air is ejected from the measuring nozzle and checking is done automatically. Make sure “OK” is displayed on the monitor screen. The Menu screen should be displayed a few seconds afterwards.

Normal operation screen

29 BASIC OPERATIONS

If “NG (+)” or “NG (-)” is displayed, an anomaly has occurred. Turn OFF the POWER SWITCH , and check whether or not there is any obstacle in front of the measuring nozzle. If there is an object, remove it, and then press the POWER SWITCH . Press and perform the checking procedure again. If no object is there, a problem has occurred. Turn OFF the POWER SWITCH , unplug the power cable, and call your dealer.

Setting the Patient

CAUTION

1 2 3 4

Never insert your fingers under the measuring head. ∗ Inform the patient of this, too. Careless insertion of fingers may cause injury by pinching.

Abnormal operation screen Return to the Measurement screen. Ask the patient to sit in front of the instrument. Adjust the automatic instrument table or the chair for height so that the patient can put his or her chin on the chinrest in a comfortable position. The patient places his or her chin on the chinrest and stops his or her forehead at the forehead rest.

30 BASIC OPERATIONS

5

Adjust the height of the chinrest, by operating the chinrest handle, so that the tail of the patient's eye becomes level with the height mark of the chinrest post.

Height mark

Chinrest handle Setting the Safety Stopper

1 2 3

CAUTION

Before measuring, set the safety stopper. If the safety stopper is not set, it may cause injury to the eye that comes in contact with the measuring window glass. Set the safety stopper separately for the right and left eyes.

CAUTION

When setting the safety stopper, do it from the instrument side (safety stopper knob side). Setting from another position does not easily allow you to check the positions of the measuring window glass and the patient's eye and may cause injury to the eye that comes in contact with the measuring window glass.

Hold the control lever and pull the machine body towards the operator. Turn the control lever and adjust the height of the measuring nozzle to the center of the patient's cornea. While holding the safety stopper knob in a pressed position, hold the control lever and slowly push out the machine body.

31 BASIC OPERATIONS

4

When the measuring nozzle reaches a position 8∼10mm from the cornea, release the safety stopper knob. 8∼10mm

5

Holding the control lever, try to slightly push out the machine body to make sure the stopper is working. If the machine body does not move forward any further, the setting is completed.

32 BASIC OPERATIONS

MEASUREMENT UNDER AUTO MODE

MEMO

•

Adjust the height of the automatic instrument table so that correct measurement values can be obtained by allowing the patient to undergo measurements in a comfortable position.

•

Make the patient relaxed so as to secure correct measurement values; make sure the patient does not hold his breath or remain tense.

Setting the Measurement Mode The initial status of the measurement mode is AUTO, upon turning the power ON.

1 2

Return to the Measurement screen. Press AUTO.

on the control panel and change the measurement mode display to

Setting the Measuring Range In this machine, the measuring range can be switched between 0-30 and 0-60. Normally, the 0-30 range is used, but if the patient's intraocular pressure is high, switch it to 0-60. The initial status of the measuring range is 0-30, upon turning the power ON.

1 2

Return to the Measurement screen. Press

on the control panel and make the measuring range display 0-30.

33 BASIC OPERATIONS

Alignment and Measurement

MEMO

It is recommended that you do intraocular pressure measurements several times. Since the intraocular pressure varies by heart beats and tears, often it is not possible to obtain exact measurement values by measuring only once or twice.

The alignment operation can be performed with the control lever.

Moving the machine body by the control lever

•

When the machine body needs to be moved slightly back and forth or right and left, move the control lever in each direction.

Operating the control lever (back and forth, right and left)

CAUTION

•

Never insert your fingers under the measuring head. ∗ Inform the patient of this, too. Careless insertion of fingers may cause injury by pinching.

To move the measuring head vertically, turn the control lever right for raising and left for lowering.

Operating the control lever (up and down)

34 BASIC OPERATIONS

1

2

3 4

Hold the control lever and pull the machine body towards the operator.

Move the control lever in directions as needed and bring the patient’s eye to the center of the monitor screen.

Tell the patient to gaze at the yellow-green light. Move the machine body toward the patient and focus the target eye. alignment dot becomes seen reflected in the cornea.

Inner alignment mark

A vague

Alignment dot

35 BASIC OPERATIONS

5 6

Move the machine body in directions as needed in order to get the alignment dot within the inner alignment mark on the monitor screen. Holding the alignment dot within the inner alignment mark, slightly push the machine body toward the patient. When the machine body approaches the target eye, the alignment bar and “FORWARD” display appear on the monitor screen.

Alignment bar

At this moment, be careful not to catch eyelashes and eyelids within the outer alignment mark so as to ensure correct measurements. If the instrument is too close to the target eye, with regard to the alignment reference position, “TOO CLOSE” is displayed on the monitor screen, and if it is too far, “FORWARD” is displayed. The alignment bar is displayed as a broken line when the instrument is close to the target eye and as a solid line when it is far. Also, the alignment bar is shortened accordingly as it approaches the alignment reference position. These factors are displayed only when the alignment dot is near the inner alignment mark.

36 BASIC OPERATIONS

Reference position

7

After the alignment bar is displayed, push the machine body out a little bit more. When the alignment is adjusted, measurement is done automatically and the measurement value is displayed on the monitor screen.

Too far

When the outer alignment mark is not displayed, measurement is not possible. After measurement Measurement can be done when the outer alignment mark is displayed after a few seconds

MEMO

•

If measurement is not possible under the Auto mode, use the Manual mode. Sometimes Auto mode is not available if the condition of the cornea is unfavorable.

37 BASIC OPERATIONS

Display of Measurement Values Measurement values are displayed on the monitor screen for up to three measurements. From the fourth measurement on, values of earlier measurements are deleted in order. Figure only : Correct measurement Figure in ( ) : Low in reliability ERR : Incorrect measurement OVER : Measurement value exceeding the measuring range

If the result is a figure in parentheses or ERR, do the measurement again, making sure the patient does not blink and eyelashes do not get in the outer alignment mark. If OVER is displayed, switch the measuring range to 0-60 and do the measurement again.

MEASUREMENT UNDER MANUAL MODE

• MEMO

•

Adjust the height of the automatic instrument table so that correct measurement values can be obtained by allowing the patient to undergo measurements in a comfortable position. Make the patient relaxed so as to secure correct measurement values; make sure the patient does not hold his breath or remain tense.

Setting the Measurement Mode The initial status of the measurement mode is AUTO, upon turning the power ON.

1 2

Return to the Measurement screen. Press “MANU”.

on the control panel and change the measurement mode display to

Setting the Measuring Range See page 33. Alignment and Measurement The alignment operation is controlled through the control lever. For details about the adjustment of the machine body using the control lever, see “Memo” on page 34.

38 BASIC OPERATIONS

1

2

3 4 5

Hold the control lever and pull the machine body towards the operator.

Move the control lever in directions as needed in order to bring the patient’s eye to the center of the monitor screen.

Tell the patient to gaze at the yellow-green light. Move the machine body toward the patient and focus the target eye. A vague alignment dot becomes seen reflected in the cornea. Move the machine body in directions as needed in order to get the alignment dot within the inner alignment mark on the monitor screen.

Inner alignment mark

Alignment dot

39 BASIC OPERATIONS

6

Holding the alignment dot within the inner alignment mark, slightly push the machine body toward the patient. When the machine body approaches the target eye, the alignment bar and the “FORWARD” display appear on the monitor screen.

Alignment bar

At this moment, be careful not to catch eyelashes and eyelids within the outer alignment mark so as to ensure correct measurements. See descriptions about the alignment bar, “FORWARD” and “TOO CLOSE” on page 36.

7

Move the machine body back and forth, with the alignment bar as a reference, while holding the alignment dot within the inner alignment mark. When the alignment is adjusted, the shape of the inner alignment mark changes to a .

Alignment is not adjusted

8

Alignment is adjusted

After the alignment is adjusted, press MEASUREMENT SWITCH . Air is ejected for measurement, and the measurement value is displayed.

In Manual mode, measurement is done by pressing MEASUREMENT SWITCH even if the alignment is not adjusted correctly. To ensure high-precision measurements, make sure the alignment is adjusted correctly.

• MEMO

40 BASIC OPERATIONS

If the shape of the inner alignment mark does not change to a even after correctly adjusting the alignment, check again to see if the alignment is adjusted correctly. Sometimes the shape of the inner alignment mark does not change to a if the condition of the cornea is unfavorable.

DELETING MEASUREMENT VALUES

1

Press on the control panel. All the measurement values of the right and left eyes are deleted and the instrument settings return to their status upon turning the power ON.

41 BASIC OPERATIONS

INDIVIDUAL OPERATIONS HOW TO PRINT OUT MEASUREMENT VALUES

MEMO

•

To avoid printer problems due to paper jams, do not feed paper if it is torn or creased.

•

To avoid discoloring, particularly of the recording part, do not store the printer paper in holders made of materials containing plasticizers (ex., vinyl chloride).

•

To avoid coloring in the white part and discoloring in the recording part, do not use bonds containing solvents. Use water bonds.

•

The printer paper is heat sensitive and cannot keep records for long periods of time. Copy the records to other paper for storage.

This machine can print out measurement values with the built-in printer.

1 2

Return to the Measurement screen. Press on the control panel. Measurement values of the monitor screen are printed out. Upon printing, the measured values are deleted automatically from the screen.

The ERR display is not printed. Also, printing can not be done when no measurement values exist. When a red line appears in the printer paper, replace it. For details about the replacement of paper, see “HOW TO SET PRINTER PAPER” on page 23. Again, use the 58-mm wide TF50KS-E2C (Japan) paper for the printer. When “PRINTER HEAD IS UP” is displayed, lower the paper retainer lever and press again.

42 INDIVIDUAL OPERATIONS

3

Hold the paper and pull it diagonally to cut.

MEMO

•

To avoid paper jams, cut the paper carefully and evenly.

HOW TO CORRECT MEASUREMENT VALUES MEMO

Never set the select switch for more than eight points to avoid malfunctions.

Though the machine is adjusted for displaying optimal measurement values, the values can be corrected within a -4 ∼ +3mmHg range.

1 2 3

Make sure the power is OFF. Open the control panel lid. Using a screwdriver, turn the “

” of the select switch.

Select switch

Settings: 0: Base setting 1: +1mmHg 2: +2mmHg 3: +3mmHg F: -1mmHg E: -2mmHg D: -3mmHg C: -4mmHg

4

For shipment, the switch is set here. Base setting + 1mmHg Base setting + 2mmHg Base setting + 3mmHg Base setting - 1mmHg Base setting - 2mmHg Base setting - 3mmHg Base setting - 4mmHg

Turn the POWER SWITCH ON. The measurement procedure is exactly the same as with the correction.

43 INDIVIDUAL OPERATIONS

INPUT/OUTPUT VIA RS-232C Output via RS-232C This machine can output data via the RS-232C interface to a personal computer or similar device.

1 2 3 4

Make sure the RS-232C OUT is connected. For connection, see “HOW TO CONNECT EXTERNAL I/O TERMINALS” on page 14. Check the settings for data communication. For data communication, see “RS-232C Input/Output Settings” on page 18. Obtain the measurements. Press on the control panel. “RS-232C DATA OUT” is displayed on the screen and the data output is completed.

Input via RS-232C This machine can input data from a bar code reader and the like via the RS-232C interface.

1 2 3 4

Make sure the RS-232C OUT is connected. For connection, see “HOW TO CONNECT EXTERNAL I/O TERMINALS” on page 14. Check the settings for data communication. For data communication, see “RS-232C Input/Output Settings” on page 18. Return to the Measurement screen. Input the ID No. from the external device. The inputted “ID No.” is displayed.

44 INDIVIDUAL OPERATIONS

BEFORE REQUESTING SERVICE CHECKING OPERATIONS Air Check If a problem is suspected, do an air check. If the result is “NG (+)” or “NG (-),” call your dealer. For instructions on how to perform an air check, see “Air Check” on page 29. Checking Operations

WARNING

To avoid electric shocks, do not open the instrument. Refer all servicing to qualified personnel.

WARNING

To avoid electric shocks, do not remove the covers from the bottom and top surfaces, TV monitor, measuring unit, etc.

If a problem is suspected, perform checks following the Check List shown below. If the condition is not improved by the suggested remedy or if it is not described in the list, call your dealer. CHECK LIST Problem: Monitor screen does not work.

Monitor screen display is not clear.

Auto mode measurement is not possible.

Measurement values have ( ) or ERRs are displayed. Paper comes out unprinted. Paper does not come out. Machine body does not move.

Check point: Power cable is not plugged into receptacle. Power cable is not plugged into machine body. Power save function is on. Fuse is burned. Monitor screen needs to be readjusted. Measuring window needs to be cleaned. Measuring window needs to be cleaned. Window in nozzle needs to be cleaned. Condition of patient's eye is unfavorable. Manual mode is on. Measuring window is not clear enough. Printer paper winding is reversed. Printer paper is used up. Paper is jammed. Clamping knob/fixing knob is fastened.

Remedy: Secure plug in power cable. Plug power cable into machine body. Return to normal status. Replace fuse. Adjust monitor screen. Clean measuring window. Clean measuring window. Clean window in nozzle. Measure under Manual mode. Set Auto mode. Clean window in nozzle. Set printer paper correctly. Supply printer paper. Remove jammed paper. Loosen up clamping knob/fixing knob.

Page: P.14 P.14 P.28 P.55 P.54 P.52 P.52 P.53 P.38 P.33 P.53 P.23,26 P.23, 56 P.55 P.8

45 BEFORE REQUESTING SERVICE

REFERENCE OPTIONAL ACCESSORIES Automatic instrument table AIT-20 and Table Board Driven by electric power, it can change the height of the instrument as desired so as to enable the patient to undergo measurement in a comfortable position. Size ...............................586(W) × 520(D)mm Table height ..................675-865mm (differs by destination) Table size .....................450(W)x500(D)mm

SPECIFICATIONS & PERFORMANCE Measuring range Working distance Measurement display Measurement recording Alignment display Monitor screen Power saving External I/O terminal Power supply Power consumption Classification Operating temperature Body movement, back & forth Body movement, right & left Body movement, up & down Chinrest adjustment Dimensions Weight

46 REFERENCE

0∼60mmHg 11mm Monitor screen (with average value) Built-in printer (with average value) Monitor screen 5in. Power save system RS232C AC 100, 120, 220, 230 and 240V; 50/60Hz 80VA IEC 601-1 CLASS I TYPE B 10∼40°C 44mm 88mm 28mm 68mm 272(W)×505(D)×430∼458(H)mm 18kg ∗ For product improvements, specifications and appearance may be changed without prior notice.

RS-232C COMMUNICATION SPECIFICATIONS Connector Types Input terminal: DIN 8-pin (TSC0838-01-2051, Hoshiden) Output terminal: DSUB 9-pin (DE-9S-N, JAE) I/O Terminal Pin Arrangement ⋅ Output terminal: DSUB 9-pin (Pin Nos.1 and 9 are not used.) Pin No. 2 3 4 5 6 7 8

Code RD (RXD) SD (TXD) ER (DTR) SG (GND) DR (DSR) RS (RTS) CS (CTS)

Description Data receiving Data transmission Data terminal ready Signal ground Data set ready Request transmission Transmission ready

I/O I O O I/O I O I

Output terminal Input terminal ⋅ Input terminal DIN 8-pin (Pin No.1 is not used.) Pin No. 2 3 4 5 6 7 8

Code SD (TXD) RD (RXD) RS (RTS) CS (CTS) DR (DSR) SG (GND) ER (DTR)

Code Description Data transmission Data receiving Request transmission Transmission ready Data set ready Signal ground Data terminal ready

I/O I O O I I I/O I

Input terminal

47 REFERENCE

Transmission Formula Mode 1, 2, 3 Synchronization Communication speed Start bit Stop bit Data length Parity Operating code

Non-synchronous 2400/9600 bps 1 bit 2 bit 8 bit None ASCI code

Mode 4, STD1 mode Synchronization Communication speed Start bit Stop bit Data length Parity Operating code

Non-synchronous 2400/9600 bps 1 bit 1 bit 8 bit None ASCI code

Contents of Data Transmission Communication format Mode 1, 3: Model name, Type No. 10 byte Time/Date 19 byte R (right eye) average data 9 byte L (left eye) average data 9 byte ∗ When the content is data with parentheses only, the average value is sent; when it is OVER data only, OVER is sent; and when there is no data or ERRs only, a space is sent. (Example)

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Communication format Mode 2: Model name, Type No. 10 byte Time/Date 19 byte Measurement value (right or left eye) average data 9 byte ∗ If ERRs only, transmission is not done. (Example)

Communication format Mode 4, STD 1: • Data Transmission Model name, Type No. Machine No. ROM version ID No. Work ID No. Machine work ID No. Time/Date R (right eye) average data L (left eye) average data

15 byte 2 byte 10 byte 13 byte 13 byte 4 byte 20 byte 9 byte 9 byte

(Example)

49 REFERENCE