Reichert AP250 User`s guide

AP250
Automated
Projector
User’s Guide
13800-101-Rev. A
13
Contents
Introduction
The AP250 is used for measuring visual acuity.
2
Package Contents
Your new Leica AP250 and accessories
2
Safety Precautions
Safety Precautions
2
Instrument Components
Instrument Components
3
Installing the AP250
Installation Procedures
4
Alignment
Optimally Focusing the AP250
5
Instructions for Use - Remote Control
Changing the Emission Code
Programming
Masking Options
6
7
7
Care and Maintenance
Changing the Halogen Bulb
Changing the Remote Control Batteries
Changing Fuses
Changing the Voltage
Routine Care
Screen Cleaning
8
8
8
8
8
8
AP250 Slide Library
Slide Library
9
Technical Specifications
Technical Specifications
9
Letter Sizing Charts
Letter Sizing Charts in Feet and Meters
10
Warranty
Warranty
12
© Reichert Ophthalmic Instruments, A Division of Leica Microsystems, Inc. All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
recording, or otherwise, without the prior written permission from Reichert Ophthalmic Instruments.
13800-101-Rev. A
1
Introduction
Congratulations on your purchase of the AP250 Automated
Projector.
Safety Precautions
•
Except for changing the Halogen bulb and replacing the
fuses, any repair or service on the AP250 must be performed only by authorized Reichert Ophthalmic Instruments personnel.
•
Only qualified and trained personnel should operate the
AP250.
•
Training for operating personnel is the sole responsibility of
the owner.
•
Plug the AP250 only into a grounded electrical receptacle.
Do not remove or obstruct the grounded electrical connection or damage to the instrument or injury to the operator
may occur.
or our
•
Customer Service Department by telephone at
(716) 686-4500, by fax at (716) 686-4555, or by e-mail
at info@reichert.com.
The line voltage setting on the instrument should agree
with the local line voltage. Otherwise, damage to the
instrument or injury to the operator may occur.
•
Always use the power switch when turning the unit off.
Turn the instrument off when not in use.
•
Do not cover any ventilation slots.
•
Do not use the AP250 in the presence of flammable
anesthetics and volatile solvents such as alcohol, benzine
or similar agents.
•
Do not set up the instrument in humid conditions. Avoid
dripping or splashing water near the instrument.
•
Use only accessories specified in this manual. If you intend
to use other accessories, consult an authorized Reichert
Ophthalmic Instruments dealer or our Customer Service
Department.
•
Never look into the AP250's light source.
•
Disconnect the power cable prior to replacing the AP250's
Halogen bulb. Allow the lamp to cool down a sufficient
amount of time or injury (burning) may occur.
In the field of subjective refraction, the AP250 is used for
measuring visual acuity.
This User’s Guide is designed as a training and reference
manual. We recommend you carefully read and follow the
steps in this guide to ensure optimum performance from your
new instrument.
Please retain this guide for future reference and to share with
other users.
For additional copies or assistance with this product, contact:
•
•
An authorized Reichert Ophthalmic Instruments dealer,
Package Contents
Your new AP250 Automated Projector and accessories were
carefully packed and checked prior to shipment; however,
please check condition and contents upon delivery. In addition
to your AP250, this shipment should include:
1 Projection Screen
1 Spare Halogen Bulb
1 Power Cord
1 Dust Cover
1 Remote Control
2 Hexagon Keys (3mm and 5mm)
2 Fuses 250ma (230V)
2 Fuses 500ma (110V)
1 Table Base
1 Pair of red/green polarizing spectacles
4 AAA-sized batteries
Symbol Information
The following symbols appear on the instrument:
CAUTION - Indicates that important operating
and maintenance instructions are included
in this User’s Guide.
Type B Product Classification
Class 1 Equipment, Continuous Operation
Protective Earth
Dangerous Voltage
2
13800-101-Rev. A
Instrument Components
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Projector Head
Projection Lens
Window for Remote Detection
Base
Remote Control Unit
Hexagon Screw
Hinge for Tilting Projector
Mounting Screw
Power Switch
Fuse Compartment with Voltage Indicator
Power Connector
Halogen Bulb Assembly
Chart Focusing Control
Distance Focusing Control
9
10
11
1
2
3
12
4
5
6
13
14
7
8
13800-101-Rev. A
3
Installation
The AP250 should be installed according to the following
procedures:
1.
If using a wall mount, it is best to locate a wall stud to
support the projector’s weight.
2.
The following distances are important in the set-up of a
refracting room:
4.
Install the projector screen.
6.
If attaching the AP250 to a mount, loosen the mounting
screw (see "Instrument Components," p. 3, #8) and insert
the projector mount onto the ball. Tighten screw, allowing
for some movement of the projector for final positioning.
Fully tighten the screw after final adjustment and alignment
of the system.
REFRACTING DISTANCE (RD) The distance from the
patient’s eye to the screen.
NOTE: There should be a distance > 5 ft. (1.5 m) between
remote control and the projector. Make sure no objects
that could interrupt remote control signals are located
between remote control and projector.
PROJECTION DISTANCE (PD) The distance from the slide
to the screen.
LETTER HEIGHT (LH) The height of a 20/200 character
should be equal to the refracting distance times the
tangent of 50 minutes of arc or .014545.
LH (inches) or (mm) = RD (inches) or (mm) x .014545
7.
Make sure that voltage indicator number corresponds with
the available local mains.
8.
Plug power cord into AC inlet and into a wall power outlet.
Set the power switch to the “ON” position.
For example, a refracting distance of 240 inches (20 feet)
will require a 20/200 height of 3.49 inches (240 inches x
.014545 = 3.49 inches) or for a 4000 mm (4 m) refracting
distance, you will require a letter height of 58.18 mm (4000
mm x .014545 = 58.18 mm).
3.
Determine the refracting distance by measuring the
distance from the patient to the screen. Please refer to
Figures 1 and 2, below, which show combinations of
refracting and projection distances achievable with this
system.
PROJECTION RANGE LIST
FT
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
M
3.0
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
5.7
6.0
6.4
6.7
7.0
7.3
7.6
7.9
Minimum
Refracting
Distance
FT
7.4
8.2
8.9
9.6
10.4
11.1
11.8
12.6
13.3
14.0
14.8
15.5
16.2
17.0
17.7
18.4
19.2
M
2.3
2.5
2.7
2.9
3.2
3.4
3.6
3.8
4.1
4.3
4.5
4.7
4.9
5.2
5.4
5.6
5.8
Maximum
Refracting
Distance
FT
11.6
12.7
13.0
15.0
16.2
17.3
18.5
19.6
20.8
21.9
23.1
24.3
25.4
26.6
27.7
28.9
30.0
M
3.5
3.9
4.2
4.6
4.9
5.3
5.6
6.0
6.3
6.7
7.0
7.4
7.7
8.1
8.4
8.8
9.2
Figure 1 - Projection Range List in meters and feet.
4
13800-101-Rev. A
25
REFRACTING DISTANCE (FT.)
Projection
Distance
PROJECTION RANGE GRAPH
30
20
Maximum
15
10
Minimum
5
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
PROJECTION DISTANCE (FT.)
Figure 2 - Projection Range Graph in feet.
Alignment
You can choose an optimum projection distance when
patient and projector are equally away from the
projection screen.
Images can be optimally focused at projection distances
between 10 ft. (3 m ) and 26.5 ft. (8 m ).
1.
Project a 20/200 or 0.1 "Z" (or other characters) onto
the screen by pressing the
key.
2.
Check the three dimensional alignment of the system.
The projector is optimized when the projection
screen is angled to direct light to the patient’s head.
Place a mirror on the screen. The light should project
where the patient's head would be (see Figure 4,
below).
3.
Adjust the image positioning on the screen. It may be
necessary to adjust the projector and the screen.
Secure projector by tightening mounting screw .
Determine the proper letter size based on the
refracting distance used. Refer to Figure 3, below,
and the Letter Sizing Charts at the end of this manual
(see Figures 9 & 10, pp. 10 - 11).
LETTER SIZING CHART
REFRACTING DISTANCE
METERS
9.14
8.53
7.92
7.32
6.71
6.10
5.49
4.88
4.27
3.66
3.05
2.44
29
8.23
27
7.62
25
7.01
23
6.40
21
5.79
19
5.18
17
4.57
15
3.96
13
2.74
2.14
6.
Open the unit's projector head cover by lossening the hexagon
screw located on the bottom side of the projector head (see
Instrument Components, p.3, #6).
6.
Move the AP250's Chart Focusing Control and Distance
Focusing Control (see "Instrument Components, p. 3, #13 & #14)
until the 20/200 or .01 "Z" is in sharp focus and fills the bracket
on the Letter Sizing Chart, as shown in Figure 3.
CAUTION: Properly setting focusing and distance controls
requires that the projector head cover be opened while
the unit is plugged in and turned on. Utilize only the Chart
Focus Control and the Distance Focusing Control (p. 3, #
13 & #14) to obtain the proper focus. Do not touch any of
the other internal components while setting the focusing
and distance controls.
Note: To obtain longer refracting distances in small rooms, a
mirror or system of mirrors can be used. A high quality front
surface mirror is required. See Figure 5, below, as an example
of arrangement of a short room with full 20 foot refracting
distance.
To prevent interference with the operation of the Remote
Control window, care should be taken not to position any bright
lights directly toward the front of the AP250.
FEET
8.83
3.35
Attach Letter Sizing Chart to the screen.
Z
11
9
7
Patient
30
28
26
24
Spot of
Light on
Wall
Mirror
➠
4.
5.
➠
Screen
22
20
AP250
18
16
14
Figure 4 - Checking three dimensional alignment.
12
10
Patient
Mirror
Patient
8
Figure 3 - Reduced-sized version of Letter Sizing Chart
(not to scale -- see Letter Sizing Charts on pp. 10-11).
Screen
Small
Mirror
AP250
Figure 5 - Using a mirror system in a small room.
13800-101-Rev. A
5
Instructions for Use - Remote Control
The AP250 is operated by a sophisticated remote control that is
divided into various sections for ease of use (see Figure 6,
below).
To change the code, follow the steps below:
1.
Open the battery compartment on the rear side of the
remote control (see Figure 7, p. 7). Select a new
combination of switch settings by moving the switches
(with a small pointed object). Sixteen combinations are
possible.
2.
Turn the projector off. Position the Remote Control at least
5 ft. (1.5 m) away from the AP250's Window for Remote
Detection. Press the IN Program Key while simultaneously
switching on the projector.
CHANGING THE EMISSION CODE
The codes of the projector and remote control are factory set
to 0000. It is advisable to change the emission code of the
Remote Control unit if several projectors are used in the same
room, thus avoiding any interaction.
Indicator Light
Red/Green Test
Binocular Balance Test
Program Keys
Illiterate Charts
Halogen Bulb On/Off
Children Charts
Special Charts
Number Charts
Letter Charts
Filters
Eye Diagram
Masking Options
Figure 6 - Remote Control Unit
6
13800-101-Rev. A
ON
1
2
3
4
Switch Settings
4.
Press the new slide.
5.
Confirm the new slide selection by pressing the NEXT
Program Key.
6.
Press the OUT Program Key. The new slide sequence is
now stored.
Interrupting a Slide Sequence at a Defined Point
1.
Press the Program Key (1 or 2) you want to interrupt.
2.
Press the IN Program Key.
3.
Press the NEXT Program Key until the slide appears that
you want to conclude the sequence.
4.
Press the OUT Program Key. The new slide sequence is
now stored.
Using the Program Sequence
Battery
Compartment
Figure 7 - Changing the Remote Control's Switch
Settings
3.
The AP250 will start with a short beep. Continue to press
the IN Program Key until you hear a longer beep. The code
setting is now complete. Release the IN Program Key and
continue operation of the AP250.
NOTE: The red indicator light flashes when pressing any
remote control function, indicating that a signal is being
sent and batteries are charged.
1.
Press the Program Key (1 or 2).
2.
Press NEXT or BACK to display the slide selections within
your programmed slide sequence.
MASKING OPTIONS
The AP250's masking options allow the operator to isolate
horizontal lines, vertical lines and individual charts. See Figure 8
below for functions of masking buttons.
UPPER HORIZONTAL
MASK OR MOVE MASK
UPWARDS
PROGRAMMING
The AP250 can record up to two (2) slide sequence programs,
including masks. Follow the steps below to store, edit and
interrupt a programed slide sequence.
LEFT VERTICAL
MASK OR MOVE MASK
TO THE LEFT SIDE
OF CHART
Storing a Slide Sequence
1.
Press Program Key 1 or 2.
2.
Press the IN Program Key.
3.
Press the first slide of the desired slide sequence.
4.
Confirm the slide selection by pressing the NEXT Program
Key.
5.
Press the subsequent slides of the sequence, confirming
each slide by pressing the NEXT Program Key.
6.
After pressing the final slide of the sequence, press the
OUT Program Key. The slide sequence is now stored in the
selected order as program 1 or 2.
Editing a Stored Slide Sequence
1.
Press the Program Key (1 or 2) you want to edit.
2.
Press the NEXT Program Key until the slide to be changed
appears on the screen.
3.
Press the IN Program Key.
RIGHT VERTICAL
MASK OR MOVE MASK
TO THE RIGHT SIDE
OF CHART
LOWER HORIZONTAL
MASK OR MOVE MASK
DOWNWARDS
TOP HORIZONTAL
MASK OR FULL VIEW
ISOLATES INDIVIDUAL
CHARACTERS
Figure 8 - Functions of masking buttons.
13800-101-Rev. A
7
Care and Maintenance
WARNING: Risk of electric shock. Always disconnect
the power cord from the wall and the instrument
before performing any of the following care and
maintenance procedures.
CAUTION: Observe polarization markings on the inside
of the battery compartment and insert batteries
accordingly.
CHANGING FUSES
WARNING: Risk of electric shock. Always disconnect
the power before changing fuses.
CHANGING THE HALOGEN BULB
WARNING: Do not touch the Halogen Bulb if the unit
has been in use. To remove the Halogen Bulb, use a
thick cloth or wait until it has cooled.
1.
2.
Open the top portion of the projector housing by loosening
the hexagon screw located underneath the front portion of
the AP250 head (see "Instrument Components, p. 3, #6).
Simultaneously grasp the Halogen Bulb Fastening Knob
and the copper plate located beneath it. (see Figure 8,
below). Slightly turn the knob counterclockwise, being
careful not to allow the copper plate or knob to disengage.
Continue turning slowly until both the knob and copper
plate are loose enough to fall into your hand.
1.
2.
CAUTION: Make sure the rating of the inserted fuses
complies with the power requirements listed under
Technical Specifications on p. 9.
Pull out the fuse compartment located on the backside of
the AP250 (see "Instrument Components, p. 3, #10).
Replace burnt fuses.
3.
Insert the fuse holder into the fuse compartment until it
snaps in.
4.
Reconnect the power cord and turn the projector on.
CHANGING THE VOLTAGE
WARNING: Risk of electric shock. Always disconnect
the power before changing fuses.
Remove the Halogen Bulb by lightly pulling upwards on the
Halogen Bulb Connection and then replace the Bulb.
CAUTION: Do not touch the Halogen Bulb as
fingerprints on the glass will shorten the Bulb's life.
CAUTION: Make sure the rating of the inserted fuses
complies with the power requirements listed under
Technical Specifications on p. 9
Pull out the fuse compartment located on the backside of
the AP250 (see "Instrument Components, p. 3, #10).
3.
Make sure the Bulb is correctly seated in the holder and
tighten the Halogen Bulb Fastening Knob.
1.
4.
Shut the top portion of the projector housing; reconnect
the power cord and turn the projector on.
2.
Remove fuses.
3.
Pull out white voltage indicator and rotate it so the
indicator line matches the desired line voltage.
4.
Insert appropriate fuses (see p. 9, Technical Specifications,
Power Requirements).
NOTE: If illumination is not uniform, call your Leica dealer
or our Customer Service department.
CHANGING THE REMOTE CONTROL'S BATTERIES
1.
Open the battery compartment on the rear side of the
remote control (see Figure 7, p. 7).
2.
Remove four batteries.
3.
Insert four new AAA batteries and close battery
compartment.
Halogen
Bulb Connection
Halogen Bulb
Fastening Knob
Copper Plate under
Fastening Knob
ROUTINE CARE
The AP250 requires very little care. The exterior housing is
made from polycarbonate and can be cleaned with a mild soap
or detergent applied to a clean cloth.
The projector lens and window for remote detection can be
cleaned with a soft clean dry cloth.
To clean the remote control, wipe with a soft clean dry cloth.
Do not disassemble to clean lenses.
SCREEN CLEANING
CAUTION: The screen that came with your AP250
has an extremely high reflective characteristic. It is
very susceptible to abrasive scratches and finger
prints. Handle with care.
Figure 8 - Replacing the Halogen Bulb.
8
13800-101-Rev. A
Leica AP250 Automated Projector
Slide Library
Technical Specifications
Projection distance
10 ft. (3 m) to 26.5 ft. ( 8 m)
Refraction distance
Min. 7.4 ft. (2.3m)
Max. 30 ft. (9.2m)
70
Number of test charts
33 standard test charts
60
Masks
Red/green, polarization,
single horizontal lines,
single vertical, single
letters and single
numbers
Tilt range of projector
± 150
Automatic switch-off
after 30 min. without
operation
Letter Charts
200
80
400
150
60
50
40
20
20
25
30
15
20
20
20
10
20
20
Number Charts
200
100
150
70
40
60
30
50
25
80
20
15
10
Illiterate Charts
100
80
70
40
20
60
30
20
50
25
15
7"
8"
13"
30
Color
White with gray accents
20
Weight
12 lbs. (5.8 Kg)
40
100
60
110V; 230V; margin ±10%
50 to 60 Hz
500 mA, slow blow/110V
250 mA, slow blow/230V
12V/30W Halogen bulb
Instrument to be
connected only to proper
outlets with correct
ground wire
Protection class
1
Degree of protection IP 21
Power consumption 40 VA
Dimensions
(Head Only)
Height
Width
Depth
Children Charts
80
Power requirements
Line voltage
Line frequency
Line fuse on 110V
on 230V
Projection lamp
Grounding wire
Special Charts
50
40
30
20
Astigmatism
Red-Green
Cross Cylinder
Phoria
Phoria
with fixation
Minute Stereo
Fixation point
Vertical
Coincidence
Binocular
Balance
Vertical Line
Horizontal Line
Worth
Eye Schematic
13800-101-Rev. A
9
LETTER SIZING CHART
REFRACTING DISTANCE
FEET
30
28
26
24
22
20
18
16
14
12
10
8
29
29
27
27
25
25
23
23
21
21
19
19
17
17
15
15
13
13
11
11
9
9
7
7
Figure 9 - Letter Sizing Chart in feet
10
13800-101-Rev. A
30
28
26
24
22
20
18
16
14
12
10
8
LETTER SIZING CHART
REFRACTING DISTANCE
METERS
9.00
8.50
8.00
7.50
7.00
6.50
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
8.75
8.75
8.25
8.25
7.75
7.75
7.25
7.25
6.75
6.75
6.25
6.25
5.75
5.75
5.25
5.25
4.75
4.75
4.25
4.25
3.75
3.75
3.25
3.25
2.75
2.75
2.25
2.25
9.00
8.50
8.00
7.50
7.00
6.50
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
Figure 10 - Letter Sizing Chart in meters
13800-101-Rev. A
11
Warranty
This product is warranted by Reichert Ophthalmic
Instruments, A Division of Leica Microsystems Inc., against
defective material and workmanship under normal use for a
period of one year from the date of invoice to the original
purchaser. (An authorized dealer shall not be considered an
original purchaser.) Under this warranty, Reichert’s sole
obligation is to repair or replace the defective part or
product at Reichert’s discretion.
This warranty applies to new products and does not apply
to a product which has been tampered with, altered in any
way, misused, damaged by accident or negligence, or
which has the serial number removed, altered or effaced.
Nor shall this warranty be extended to a product installed
or operated in a manner not in accordance with the
applicable Leica instruction manual, nor to a product which
has been sold, serviced, installed or repaired other than by
a Reichert factory, Technical Service Center, or authorized
Reichert Ophthalmic Instrument Division Dealer.
Lamps, bulbs, charts, cards and other consumable items
are not covered by this warranty.
All claims under this warranty must be in writing directed to
the Reichert factory, Technical Service Center, or
authorized instrument dealer making the original sale and
must be accompanied by a copy of the purchaser’s invoice.
This warranty is in lieu of all other warranties implied or
expressed. All implied warranties of merchantability or
fitness for a particular use are hereby disclaimed. No
representative or other person is authorized to make any
other obligations for Reichert. Reichert shall not be liable
for any special, incidental, or consequent damages for any
negligence, breach of warranty, strict liability or any other
damages resulting from or relating to design, manufacture,
sale, use or handling of the product.
PATENT WARRANTY
If notified promptly in writing of any action brought against
the purchaser based on a claim that the instrument
infringes a U.S. Patent, Reichert will defend such action at
its expense and will pay costs and damages awarded in
any such action, provided that Reichert shall have sole
control of the defense of any such action with information
and assistance (at Reichert’s expense) for such defense,
and of all negotiation for the settlement and compromise
thereof.
12
13800-101-Rev. A
PRODUCT CHANGES
Reichert reserves the right to make changes in design or to
make additions to or improvements in its products without
obligation to add such to products previously manufactured.
CLAIMS FOR SHORTAGES
We use extreme care in selection, checking, rechecking and
packing to eliminate the possibility of error. If any shipping
errors are discovered:
1. Carefully go through the packing materials to be sure
nothing was inadvertently overlooked when the unit was
unpacked.
2. Call the dealer you purchased the product from and report
the shortage. The materials are packed at the factory and
none should be missing if the box has never been opened.
3. Claims should be filed within 30 days.
CLAIMS FOR DAMAGES IN TRANSIT
Our shipping responsibility ceases with the safe delivery in
good condition to the transportation company. Claims for loss
or damage in transit should be made promptly and directly to
the transportation company.
If, upon delivery, the outside of the packing case shows
evidence of rough handling or damage, the transportation
company’s agent should be requested to make a “Received in
Bad Order” notation on the delivery receipt. If within 48 hours
of delivery, concealed damage is noted upon unpacking the
shipment and no exterior evidence of rough handling is
apparent, the transportation company should be requested to
make out a “Bad Order” report. This procedure is necessary in
order for the dealer to maintain the right of recovery from the
carrier.