Marco CP-670 Bedienungsanleitung

MARCO

CP-670 AUTOMATIC

CHART PROJECTOR

Instruction Manual

CONTENTS

GENERAL DESCRIPTION. . . . . . . . . . . . . . . 1

INSTALLATION......................2

Mounting the Projector

Positioning the Projector

Positioning the Screen

Correct Letter Size and Focusing

OPERATION........................3

Using the Remote

CARE AND MAINTENANCE . . . . . . . . . . . .

Changing the Bulb

Changing the Fuse

Changing the Batteries

SETTING THE REMOTE CONTROL CODE . .

SPECIFICATIONS ....................5

CHARTSAMPLES ....................5

INTRODUCTION

The Marco CP 670 Automatic Chart Projector is a wireless remote

controlled unit which provides instantaneous selections of 33 of

the most popular ophthalmic charts used. With programmable

random access capability, the instrument enables you to quickly

and easily program pre selected slides and present them in a

sequence most suited to your particular refraction needs.

Superior masking features and red/green filtering over any appro

priate chart also extends the capability of the CP 670. The excel

lent design in both function and style will increase the efficiency

of your examination procedures, provide you with state of the art

technology, and enhance the decor of your office.

GENERAL DESCRIPTION

The CP 670 consists of the main Chart Projector body, wireless

remote control, projection screen, test scale, and dust cover. The

table, unit, and wall mounts are optional accessories sold sepa

rately. Please review the brief descriptions associated with Figure 1

to familiarize yourself with each function.

1- ON/OFF Switch: The green LED next to the main switch will

be illuminated when the main switch is turned on.

2- Infrared Ray Receiving Window: Receives the infrared

signals from the wireless remote control unit.

3- Wireless Remote Control: The hand held remote control

unit permits total operation of the Chart Projector from

anywhere within the examination room. Maximum range is 25

feet from the projector to the screen.

- Top Cover Screw: The top cover screw allows for removal of

the top cover of the Chart Projector for access to the bulb,

focusing and letter size adjustment knobs, and the remote

control code switches.

5- Fuseholder: The fuse is replaced by turning the fuseholder

counterclockwise and removing the blown fuse.

1. ON/OFF Switch

2. Infrared Ray

Receiving Window

3. Wireless Remote

4. Top Cover Screw

5. Fuseholder

Figure 1

INSTALLATION

Mounting the Projector

Available options for mounting the CP 670 are a wall, unit, and

table mount. Preferably, the instrument should be mounted at

the same height as the patient’s eyes. If this is not possible, tilt the

instrument slightly so that the projected image on the screen is at

the same height as the patient’s eyes.

Positioning the Projector

Measure the distance from patient to screen (refracting distance)

and mount the Chart Projector within the following projection

distance guidelines:

Refracting Distance Projection Distance

10 feet 10 13 feet

13 feet 13 17 feet

16.4 feet 16 21 feet

20 feet 19 25 feet

To obtain a longer refracting distance in smaller rooms, a mirror

or system of mirrors should be used (Figure 2). A high quality

front surface mirror is recommended to obtain optimal results.

Positioning the Screen (Figure 3)

Hang or hold a small mirror on the screen and tilt or turn the

screen until the projected spot of light is properly directed

towards the patient.

Correct Letter Size and Focus

1. Project the 20/200 N on the screen.

2. As a reference for proper measurements, have someone hold

the distance scale (Figure 4) on the screen and focus the

20/200 N to measure evenly with the respective distance line.

(The scale of 10 to 20 feet refers to the distance from patient to

screen.)

3. To adjust for proper letter size and focus, remove the top cover

by turning the top cover screw 1

/2turn counterclockwise (refer

to figure 5). For image focusing, loosen the focusing knob and

slide the focusing tube forward or backward to obtain proper

focus. The rear adjustment knob controls letter size. Loosen

and slide the knob forward or backward for proper letter size.

When adjustments are completed, tighten both knobs and

replace the top cover.

Screen

Patient

Spot of

light

on wall

Projector

Figure 3

Focusing Knob

Letter Size Control Knob

Mirror

Screen

Projector

Patient’s eye

Figure 2

1100’’1111’’1122’’1133’’1144’’1155’’1166’’1177’’1188’’1199’’2200’’

Figure 4

Figure 5

OPERATION

Using the Remote

To effectively operate the CP 670, it will be important that you

understand and familiarize yourself with each function of the

remote control unit. It can be easily operated by aiming it directly

at the screen or by aiming it at the Chart Projector. Please take

plenty of time to accustom yourself to the various selections on

the remote control.

The diagram in Figure 6 and the descriptions listed below explain

each of the available selections.

“Lamp” On/Off Button

The “Lamp” button controls On/Off of the projection lamp from

the remote control. When initially depressed, the 20/ 00E will

automatically be displayed. If the instrument is not operated for

more than 15 minutes, a series of warning “beeps” will sound

and the instrument will automatically shut off in seven seconds. If

a particular chart is needed for more than 15 minutes, depress

that chart button again after you hear the warning beeps.

The shut off timer can be adjusted for a five minute period. Please

refer to Figure 8, Setting the Remote Control Code. When switch

#6 is turned on, the timer is set for 15 minutes; when #6 is off,

the timer is set for five minutes.

Snellen Charts

Eight snellen charts provide selections from 20/400 to 20/10 with

five 20/20 lines. Vertical isolations of the 20/20 chart will also dis

play additional 20/20 lines.

Illiterate E’s

Four illiterate E charts provide selections from 20/100 to 20/15.

Number Charts

Five number charts provide selections from 20/200 to 20/10.

Child Charts

Three child charts provide selections from 20/100 to 20/20.

Vectograph Charts

The CP 670 is supplied with a variety of vectograph or “specialty”

charts including a unique Minute Stereo test chart. When a polar

ized lens is presented to the patient after subjective refinement is

completed, the Minute Stereo test chart is viewed by the patient

in a 3 dimensional pattern with each symbol “floating” in space

beginning with the triangle and following in a clockwise pattern

to the circle, star, and then square. A correct response by the

patient accurately verifies subjective refinement.

Single Character Masking

Depressing the single character masking button will totally

isolate any single character on any acuity chart. To move the iso

lation from side to side, depress the vertical masking buttons. To

move the isolation up or down to another line on the same

chart, depress the horizontal masking buttons.

Vertical Character Masking

Depressing the left vertical masking button will vertically iso

late the far left line on any acuity chart. The right vertical mask-

ing button will vertically isolate the far right line on any chart.

Repeated depressions of these buttons will move the isolation

from side to side. Depressing either horizontal masking button will

allow you to move the vertical isolation up or down the selected

acuity range.

Horizontal Character Masking

Depressing the top horizontal masking button will horizon

tally isolate the top line of any acuity chart. The bottom horizon-

tal masking button will horizontally isolate the bottom line of

any acuity chart. Repeated depressions of either button will allow

you to move up or down the selected acuity range.

Red/Green Filter

In addition to the separate red/green chart provided with the

vectograph charts, the CP 670 also gives you the capability of fil

tering red/green over any appropriate chart with the exception of

the 20/400 and 20/300 charts. Filtering is also possible with all

illiterate E charts, and all child charts.

Program Buttons

The program buttons allow you to pre program three separate

examination sequences. All charts are capable of program stor

age as well as a "masked" chart selection.

To program and operate a personal selection of charts:

1. Depress the Lamp Button on the remote control to turn the

unit off.

2. Select the desired program button, A, B, or C, and hold for

five seconds. The instrument will "beep" and will immediately

display the fixation dot.

Figure 6

Special

Tests

Program

Functions

Red/Green

Filter

Illiterate E

Snellen

Charts

Children’s

Snellen

Charts

Movable

Masking

Options

(Vertical,

Horizontal,

Single

Character)

Alphabet

Snellen

Charts

Number

Charts

3. Select the chart you wish to program immediately followed by

the NEXT chart. The instrument will "beep", recognizing your

selection.

4. After programming is completed, depress the previously

selected program button (A, B, or C) to store your selections

into memory. The instrument will "beep", indicating storage,

and will automatically display the 20/ 00 E. To start your

sequence of charts, depress the START (A) button. To for

ward through your program, depress the NEXT button. The

instrument will "beep" at the end of your program sequence.

CARE AND MAINTENANCE

Changing the Bulb (Figure 7)

1. Turn the main power switch off, and unplug the power cord.

2. Remove the top cover by turning the top cover screw 1

turn counterclockwise.

3. Loosen the small knurled lamp cover screw and open the

lamp cover.

4. Remove the old bulb and replace with an identical bulb.

NOTE: The CP-670 uses a halogen bulb. Please avoid

touching the bulb directly with your fingers. This may

shorten its lifespan.

5. Secure the lamp cover, plug the instrument back in, and turn

the main power switch on.

6. If necessary, adjust the bulb position as needed by turning the

lamp holder adjustment screws.

7. Replace the top cover.

Warning: Re lace with Marco 6 volt, 20 watt

bulb only. Re lacement with any

other ty e bulb will cause major

damage and void warranty.

Changing the Fuse

Two fuse holders are located on the bottom of the CP 670. To

replace a blown fuse, unplug the power cord from the wall and

carefully turn the instrument over. Push the fuseholder in and

turn counterclockwise. Replace with an identical fuse and reinstall

the fuseholder.

Changing the Batteries

To change the batteries in the remote control, press the tab down

located on the back of the remote and pull the latch open.

Replace with two fresh AA batteries.

NOTE: When not in use for an extended period of time,

please remove the batteries.

SETTING THE REMOTE CONTROL

CODE Figure 8)

If more than one Chart Projector is used in the same exam ination

area, the remote control code for each unit should be changed

to avoid mis operation. Four different codes are available.

1. Remove the top cover of the chart projector.

2. Located directly on top of the PC board is a computer chip with

six small switches for the remote control code of the main body.

The standard setting from the factory is shown in Figure 8.

NOTE: Do not change positions of switches 3 through 5.

3. The codes for the remote control are set by the two small "tab"

switches located inside the square slot directly above the

battery box. Remove the back cover of the remote control to

expose these switches.

4. The diagram in Figure 8 illustrates the four different setting

codes for the switches of the main body and the code

switches for the remote control unit. Please refer to this

diagram when setting individual codes for the CP 670.

Lamp Cover Lamp

Lamp Cover Screw

3 Lamp Holder

Adjustment Screws

Figure 7

Off

3456

Standard Setting

from factory.

➡➡

➡

➡➡

➡

Figure 8

CHART SAMPLES A Fixation Chart is included, ut not shown.

★

Snellen 400

Snellen 20–15–10 Snellen 20–20–20 Snellen 25–20–20 Illiterate E 100–80 Illiterate E 70–60–50

Illiterate E 40–30–25 Illiterate E 20–20–15 Children’s 100 Children’s 80–60 Children’s 40–30–20

Num er 200–150 Num er 100–80 Num er 70–60–50 Num er 40–30–25 Num er 20–15–10

Red/Green with

Letters

Cross Cylinder Dots Vertical Letters Horizontal Letters Binocular Balance

Astigmatic Clock Dial Phoria Phoria with Fixation

Muscle Balance Test

Minute Stereo Test Coincidence Vertical

Schematic Eye Worth Test

Snellen 200–150 Snellen 100–80 Snellen 70–60–50 Snellen 40–30–25

SPECIFICATIONS

Chart: 33 pcs.

Projection distance: 9.5 to 20 ft. (16.4 ft. is standard)

Projection

magnification: 25X (at 16.4 ft.)

Projection size: 9.84 x 8.85 in. and 10.83 in. diameter

Tilt angle: ±10°

Lamp: 6V 20W (Halogen), 2,000 hrs. lifetime

Power source: AC 100, 120, 220 and 240V, 50/60Hz

Power consumption: 50VA

Dimensions - Main body: 11.02 (H) x 8.26 (W) x 13.48 (D) in.

Control unit: 0.70 (H) x 2.51 (W) x 6.88 (D) in.

Weight - Main body: 15.4 lbs.

Control unit: .98 lbs

Finish - Main body: White grey

Control unit: White grey

Accessories: 1 each of dust cover, screen, test

scale, wrench, and 2 spare fuses.

Optional accessories: Wall mount bracket, desk mount,

unit mount.

A division of Marco O hthalmic, Inc. •11825 Central Parkway •Jacksonville, FL 32224-2 37

904- 42-9330 •US/Canada Toll-free: 1-800-874-5274 •Fax: 904- 42-9338 •www.marcooph.com G002000

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