Keeler PSL Classic User manual

A world without vision loss
PSL Classic
PSL One
PORTABLE SLIT LAMP
INSTRUCTIONS FOR USE

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PORTABLE SLIT LAMP by KEELER
CONTENTS
1. INDICATIONS FOR USE ........................................................................................ 3
2. SAFETY................................................................................................................. 4
2.1 PHOTOTOXICITY ............................................................................................................................4
2.2 WARNINGS AND CAUTIONS..........................................................................................................4
2.3 CONTRAINDICATION.....................................................................................................................5
3. CLEANING AND DISINFECTION INSTRUCTIONS.................................................... 6
4. NAMES OF CONTROLS AND COMPONENTS ......................................................... 6
5. INSTRUCTIONS FOR USE ...................................................................................... 8
5.1 PREPARING THE POWER SUPPLY AND THE BASE UNIT ...................................................................8
5.2 PREPARING THE PORTABLE SLIT LAMP PRIOR TO USE....................................................................8
5.3 PREPARING THE PATIENT...............................................................................................................9
6. PROBLEM SOLVING ............................................................................................ 10
7. ROUTINE MAINTENANCE ................................................................................... 10
7.1 CHANGING THE LED....................................................................................................................10
7.2 REGULARLY INSPECT THE DEVICE FOR DAMAGE OR DIRT............................................................11
8. WARRANTY ........................................................................................................ 11
9. SPECIFICATIONS AND ELECTRICAL RATINGS...................................................... 11
9.1 ELECTROMAGNETIC EMISSIONS..................................................................................................12
9.2 ELECTROMAGNETIC IMMUNITY ..................................................................................................12
9.3 RECOMMENDED SAFE DISTANCES ..............................................................................................14
9.4 TECHNICAL SPECIFICATIONS.......................................................................................................15
10. ACCESSORIES AND SPARES................................................................................ 17
11. PACKAGING AND DISPOSAL INFORMATION....................................................... 17

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PORTABLE SLIT LAMP by KEELER
Consult instructions for use General warning sign
Date of manufacture Warning: Electricity
Manufacturer’s name and
address Warning: Floor level obstacle
Country of manufacture Warning: Non-ionizing
radiation
Waste Electrical and Electronic
Equipment (WEEE) recycling Warning: Optical radiation
This way up Warning: Hot surface
Keep dry Conformité Européene
Fragile Type B applied part
Do not use if package is
damaged Class II equipment
Temperature limit Atmospheric pressure
limitation
Authorised representative in
the European Community Humidity limitation
Use-by date Serial number
Catalogue number Medical device
Translation
The Keeler Portable Slit Lamp is designed and built in conformity with Directive 93/42/EEC, Regulation (EU)
2017/745 and ISO 13485 Medical Devices Quality Management Systems.
Classification: CE: Class I
FDA: Class II
The information contained within this manual must not be reproduced in whole or part without the manufacturer’s
prior written approval. As part of our policy for continued product development we the manufacturer reserve the right
to make changes to specifications and other information contained in this document without prior notice.
This IFU is also available on the Keeler UK and Keeler USA websites.
Copyright © Keeler Limited 2021. Published in the UK 2021.

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PORTABLE SLIT LAMP by KEELER
1. INDICATIONS FOR USE
This device is intended to be used only by suitably trained and authorised healthcare
professionals.
CAUTION: Federal Law restricts this device to sale by or on the order of a
physician or practitioner.
Intended use / purpose of instrument
The Keeler Portable Slit Lamp facilitates an examination of the anterior segment, or frontal
structures and posterior segment, of the human eye, which includes the eyelid, sclera,
conjunctiva, iris, natural crystalline lens and cornea which is accomplished through its lamp.
PSL Classic provides x16 magnification setting in addition to the fixed x10 magnification that’s
only present on the PSL One variant.
Brief description of the instrument
The Keeler Portable Slit Lamp comprises a rechargeable hand held portable illuminated
biomicroscope system and a desk mounted base charger unit that is powered from a low
voltage (12V) power supply.
The hand-held unit incorporates a lithium ion rechargeable battery powering the illumination
system. The illumination system and fixation targets are activated using a double click trigger
located on the front of the grip / handle. To increase or reduce the light intensity there is a
rheostat located below the eyepieces on the rear of the grip / handle.
PSL Classic
The 10x and 16x magnification optical system is controlled using a flip lever located under the
adjustable eyepieces.
PSL One
The PSL One is a fixed 10x magnification system.

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PORTABLE SLIT LAMP by KEELER
2. SAFETY
2.1 PHOTOTOXICITY
CAUTION: The light emitted from this instrument is potentially hazardous.
The longer the duration of exposure, the greater the risk of ocular dam-
age. Exposure to light from this instrument when operated at maximum
intensity will exceed the safety guideline after 13 minutes for the LED
version and after 44 minutes for the bulb version.
While no acute optical radiation hazards have been identified for slit
lamps, we recommend keeping the intensity of the light reaching the
patient’s retina to the minimum possible for the respective diagnosis.
Children, people with aphakia and people suffering from eye conditions
are most at risk. An increased risk may also occur if the retina is exposed
to the same or a similar device with a visible light source within 24 hours.
This applies, in particular, if the retina has been photographed with a
flashbulb in advance.
Keeler Ltd shall on request, provide the user with a graph showing the
relative spectral output of the instrument.
2.2 WARNINGS AND CAUTIONS
Please note that the proper and safe functioning of our instruments is only guaranteed if
both the instruments and their accessories are exclusively from Keeler Ltd. The use of other
accessories may result in increased electromagnetic emissions or reduced electromagnetic
immunity of the device and may lead to incorrect operation.
Observe the following precautions in order to ensure safe operation of the instrument.
WARNINGS
• Never use the instrument if visibly damaged and periodically inspect it for signs of damage
or misuse.
• Check your Keeler product for signs of transport / storage damage prior to use.
• Do not use in the presence of flammable gases / liquids, or in an oxygen rich environment.
• US Federal Law restricts this device to sale by or on the order of a physician or practitioner.
• This device is intended to be used only by suitably trained and authorised healthcare
professionals.
• This product should not be immersed in fluid.
• Repairs and modifications to the instrument must be made only by the specialized
technicians of the manufacturer’s Technical Service Centre or by personnel trained and
authorised by the manufacturer. The manufacturer declines any and all responsibility for
loss and/or damages resulting from unauthorised repairs; furthermore, any such actions
will invalidate the warranty.

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PORTABLE SLIT LAMP by KEELER
• The power switch and mains plug are the means of isolating the device from the mains
supply – ensure both the power switch and mains plug are accessible at all times.
• Do not position the equipment so that is difficult to press the power switch or remove the
mains plug from the wall socket.
• Route power cords safely to eliminate risk of tripping or damage to user.
• Before any cleaning of the instrument or the base unit ensure the power lead is
disconnected.
• LEDs can reach high temperatures in use – allow to cool before handling.
• Do not exceed maximum recommended exposure time.
• Should the instrument suffer shocks (for example, should it accidentally fall), and the
optical system or the illumination system are damaged it may be necessary to return the
instrument to the manufacturer for repair.
• After removal of the LED, do not touch the Slit Lamp LED electrical contacts and patient
simultaneously.
• The owner of the instrument is responsible for training personnel in its correct use.
• Ensure the instrument or instrument table is placed on a level and stable surface.
• Do not position the portable slit lamp such that it makes it difficult to access and operate
the device.
• Applied parts exceed 41 degrees Celsius. The maximum temperature and condition of safe
contact for the PSU is 44.3 degrees and the slit lamp base is 42.1 degrees.
• Use only genuine Keeler approved parts and accessories or device safety and performance
may be compromised.
• For indoor use only (protect from moisture).
• Electrical equipment can be affected by electromagnetic interference. If this occurs whilst
using this equipment, switch the unit off and reposition.
Before use, the Portable Slit Lamp should be allowed to adjust to the
ambient room temperature for several hours. This is especially important
when the unit has been stored or transported in a cold environment; this
can cause severe condensation to develop on the optical elements.
2.3 CONTRAINDICATION
There is no restriction to the patient population this device can be used with. There are also no
contraindications for this device.

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PORTABLE SLIT LAMP by KEELER
3. CLEANING AND DISINFECTION INSTRUCTIONS
Before any cleaning of the instrument or the base unit, ensure the power
lead is disconnected.
Only manual non-immersion cleaning as described should be used for this instrument. Do not
autoclave or immerse in cleaning fluids. Always disconnect power supply from source before
cleaning.
1. Wipe the external surface with a clean absorbent, non-shedding cloth dampened with
de-ionised water / detergent solution (2% detergent by volume) or water / isopropyl
alcohol solution (70% IPA by volume).Avoid optical surfaces.
2. Ensure that excess solution does not enter the instrument. Use caution to ensure cloth is
not saturated with solution.
3. Surfaces must be carefully hand-dried using a clean non- shedding cloth.
4. Safely dispose of used cleaning materials.
4. NAMES OF CONTROLS AND COMPONENTS
Portable Slit Lamp illumination body and magnification optics
1. Trigger: Click and hold the trigger to turn the lamp illumination on. Double click
(similarly to a computer mouse button) to turn both the illumination lamp and fixation
targets on. Release the trigger to turn off the device.
2. Prism optical body: Projects a thin sheet (slit) of light perpendicular to the prism face.
3. Eyepieces – dioptrical adjustment: Rotate clockwise to achieve a + (plus) setting and
anti-clockwise for a – (minus) setting.
4. Eyepieces – PD adjustment: Rotate the left eyepiece anti-clockwise and the right
eyepiece clockwise to increase the PD value. Rotate the left eyepiece clockwise and the
right eyepiece anti-clockwise to decrease the PD value.
5. Latex free protective sleeves: These sleeves can be folded forwards to better suit
spectacle wearers.
6. Fixation targets: Provides a light source for the patient to focus upon. Double click
(similarly to a computer mouse button) to turn both the illumination lamp and fixation
targets on.
7. Objective lenses: These lenses are flush with the external surface at a magnification of
10x and protrude from the device at a magnification of 16x.
8. Slit wheel: Rotate the slit wheel to select either a slit of 0.15mm (0.15), 0.5mm (0.5),
0.8mm (0.8), 1.6mm (1.6), a circle of 12mm (O), or a square of 1mm ( ) for a/c flare
assessment. (The text in the brackets corresponds to the icons on the slit wheel.)
9. Filter wheel: Rotate the filter wheel to select either a red free (R.F), blue (B.F), neutral
density (N.D) or clear filter (O). (The text in the brackets corresponds to the icons on the
filter wheel.)
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PORTABLE SLIT LAMP by KEELER
3. CLEANING AND DISINFECTION INSTRUCTIONS
Before any cleaning of the instrument or the base unit, ensure the power
lead is disconnected.
Only manual non-immersion cleaning as described should be used for this instrument. Do not
autoclave or immerse in cleaning fluids. Always disconnect power supply from source before
cleaning.
1. Wipe the external surface with a clean absorbent, non-shedding cloth dampened with
de-ionised water / detergent solution (2% detergent by volume) or water / isopropyl
alcohol solution (70% IPA by volume).Avoid optical surfaces.
2. Ensure that excess solution does not enter the instrument. Use caution to ensure cloth is
not saturated with solution.
3. Surfaces must be carefully hand-dried using a clean non- shedding cloth.
4. Safely dispose of used cleaning materials.
4. NAMES OF CONTROLS AND COMPONENTS
Portable Slit Lamp illumination body and magnification optics
1. Trigger: Click and hold the trigger to turn the lamp illumination on. Double click
(similarly to a computer mouse button) to turn both the illumination lamp and fixation
targets on. Release the trigger to turn off the device.
2. Prism optical body: Projects a thin sheet (slit) of light perpendicular to the prism face.
3. Eyepieces – dioptrical adjustment: Rotate clockwise to achieve a + (plus) setting and
anti-clockwise for a – (minus) setting.
4. Eyepieces – PD adjustment: Rotate the left eyepiece anti-clockwise and the right
eyepiece clockwise to increase the PD value. Rotate the left eyepiece clockwise and the
right eyepiece anti-clockwise to decrease the PD value.
5. Latex free protective sleeves: These sleeves can be folded forwards to better suit
spectacle wearers.
6. Fixation targets: Provides a light source for the patient to focus upon. Double click
(similarly to a computer mouse button) to turn both the illumination lamp and fixation
targets on.
7. Objective lenses: These lenses are flush with the external surface at a magnification of
10x and protrude from the device at a magnification of 16x.
8. Slit wheel: Rotate the slit wheel to select either a slit of 0.15mm (0.15), 0.5mm (0.5),
0.8mm (0.8), 1.6mm (1.6), a circle of 12mm (O), or a square of 1mm ( ) for a/c flare
assessment. (The text in the brackets corresponds to the icons on the slit wheel.)
9. Filter wheel: Rotate the filter wheel to select either a red free (R.F), blue (B.F), neutral
density (N.D) or clear filter (O). (The text in the brackets corresponds to the icons on the
filter wheel.)
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10. Magnification change lever (PSL Classic
only): Push this lever to the right to set the
magnification at 10x and to the left to set the
magnification at 16x.
11. Alternative power socket: In addition to
charging through the base charger unit, the
device can also be charged through this
socket.
12. Charging LED: The yellow charging LED is
on continuously during normal charging and
blinks when trickle charging. Trickle charging
can occur at the start of charging a completely
discharged battery or when attempting to
charge a completely charged battery.
13. Battery state LED: The yellow battery state LED
blinks when the battery is almost empty.
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PORTABLE SLIT LAMP by KEELER
14. Brightness adjustment wheel: Rotating this wheel clockwise increases the brightness of
the illumination lamp. Rotating this wheel anti-clockwise decreases the brightness of the
illumination lamp.
Portable Slit Lamp base charger unit
15. Power socket for Keeler 12V Power Supply:
Connect the power supply cable to this socket
and the place the slit lamp body in the charger
unit to charge the device.
16. Recharging connection pins: Connects the slit
lamp body to the charger unit to charge the
device.
17. Recess for slit lamp body: Place the slit lamp
body in the charger unit when not in use.
18. Grooves for power cable: Place the power supply
cable in the most suitable groove to keep the
unit tidy.
19. Protective rubber feet: Ensures the surface onto
which the charger unit is placed does not become
scratched.
20. Charging safety feature: Note: No electrical
power is conducted through the pins (16) until
the slit lamp body is placed into the recess of the
charger unit.
5. INSTRUCTIONS FOR USE
5.1 PREPARING THE POWER SUPPLY AND THE BASE UNIT
1. Attach the appropriate mains plug adapter to the transformer after removing the
blanking plate or if required use an IEC 60320 type 7 connector (not supplied).
2. Connect the output power supply cable to the socket on the underside of the recharging
base unit.
3. Place the Portable Slit Lamp on the base charger unit, the yellow LED will illuminate to
indicate the unit is being charged. From fully discharged to fully charged usually takes
2.5 hours.
Illumination ‘on time’ 50 minutes (when used at full intensity from fully charged)
5.2 PREPARING THE PORTABLE SLIT LAMP PRIOR TO USE
1. Set the pupillary distance of the eyepieces by firmly grasping them and adjusting the
distance by gently rotating the prism bodies inwards or outwards until a full circular
image is seen binocularly.
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PORTABLE SLIT LAMP by KEELER
2. Adjust the dioptric power of each of
the eyepieces, one at a time. Adjust the
eyepiece to it’s highest + (plus) setting
and looking through the optics at the
peripheral focus marker, slowly adjust the
eyepiece towards the – (minus) setting
until the focus marker is sharply in focus.
Repeat this for the other eyepiece.
Note: Spectacle wearers may prefer to
fold the rubber eye cup forwards.
3. Set the magnification to either x10 or
x16 using the magnification change lever (PSL Classic only).
4. Select your preferred slit width and filter by rotating the slit and the filter wheels.
5. To set the slit at an angle rotate the illumination tower about its pivot axis.
6. Holding the slit lamp firmly click and hold the trigger to turn on the illumination
lamp. Double click and hold the trigger to turn on both the illumination lamp and
fixation targets. The lamp does not run continuously, after a duration of 2 minutes it
automatically switches off. This is the duration of safe contact.
Note – for very small or
young patients, babies in
arms and some animals,
sometimes it may be
preferable to use the
Portable Slit Lamp inverted
– shown in the illustration.
Note – it can be beneficial to
stabilize the Slit Lamp using
the technique shown in the
illustration above.
5.3 Preparing the patient
The patient should be as comfortable as possible and positioned to allow easy access to the
eye to be examined.
The Keeler Portable Slit Lamp is designed to be ambidextrous, hold the Slit Lamp in your
preferred hand simultaneously squeezing the trigger on / off switch.
To improve stability, especially at higher magnifications, you may like to use your other hand as
a ‘bridge’ between the Slit Lamp body and the patient.
As with other Slit Lamp examination procedures it may be necessary to elevate the patient’s
eyelid.
Peripheral focus
marker

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PORTABLE SLIT LAMP by KEELER
6. PROBLEM SOLVING
Problem Solution
No illumination, or low illumination Check the unit is fully charged
Check the position of the filters and slits to ensure
they are set correctly
Check and if necessary change the LED
Slit slanted at an angle Check the position of the slit disc, it may not be
located correctly at a slit position
Circle incomplete or offset Check the position of the slit and filter discs, it may
not be located correctly at a slit position
Poor focus Check the dioptric settings of the eyepieces
7. ROUTINE MAINTENANCE
7.1 CHANGING THE LED
Warning the LED may be hot if the Slit Lamp has been in continuous use,
take care when removing the LED.
Make sure the power is disconnected before changing the LED. To change
the LED, first allow 5 minutes for it to cool down if the Slit Lamp has been
in use.
1. Unscrew the black plastic LED cover
by turning anti-clockwise.
2. Remove the old LED, allow 5 minutes
for it to cool down if the Slit Lamp
has been in use.
3. Insert the new LED, ensuring the
notch is facing upwards as shown.
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3a 3b LED (1030-P-5002-001) for use
with PSL’s that have serial number
3010/18183 and above.
LED (1030-P-5002) for use with PSL’s
that have serial number 3010/00000 to
S/N 3010/18182.

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7.2 REGULARLY INSPECT THE DEVICE FOR DAMAGE OR DIRT
1. Routinely clean as per section 3 on page 6 cleaning instructions.
2. Care must be taken to keep the objective and the eyepiece lenses clean – use only soft,
clean lens cloths to clean optical surfaces.
CAUTION: No specific frequency of servicing is applicable. Calibration,
maintenance checks to be made only if the product has been dropped or
suspected sign of damage for preventive inspection to be looked into.
8. WARRANTY
The Keeler Portable Slit Lamps are guaranteed for three years against faulty workmanship
materials or factory assembly. Warranty is on a Return To Base (RTB) basis at the cost of the
customer and may be void if the Slit Lamp has not been regularly serviced.
The manufacturer’s warranty and terms and conditions are detailed on the Keeler UK website.
The mirror, main illumination lamp and general ‘wear and tear’ are excluded from our standard
warranty.
The manufacturer declines any and all responsibility and warranty cover-
age should the instrument be tampered with in any manner or should rou-
tine maintenance be omitted or performed in manners not in accordance
with these manufacturer’s instructions.
There are no user serviceable parts in this instrument. Any servicing or
repairs should only be carried out by Keeler Ltd. or by suitably trained and
authorised distributors. Service manuals will be available to authorised
Keeler service centres and Keeler trained service personnel.
9. SPECIFICATIONS AND ELECTRICAL RATINGS
The Keeler Portable Slit Lamp is a medical electrical instrument. The instrument requires special
care concerning electromagnetic compatibility (EMC). This Section describes its suitability
in terms of electromagnetic compatibility of this instrument. When installing or using this
instrument, please read carefully and observe what is described here.
Portable or mobile-type radio frequency communication units may have an adverse effect on
this instrument, resulting in malfunctioning.

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9.1 ELECTROMAGNETIC EMISSIONS
Guidance and manufacturer’s declaration – electromagnetic emissions
The Keeler Portable Slit Lamp is intended for use in the electromagnetic environment specified
below. The customer or user should ensure that it is used in such an environment.
Emissions test Compliance Electromagnetic environment – guidance
RF emissions CISPR 11 Group 1 The Keeler Portable Slit Lamp uses RF energy only for its
internal function. Therefore, its RF emissions are very low
and are not likely to cause any interference in nearby
electronic equipment.
RF emissions CISPR 11 Class A The Keeler Portable Slit lamp is suitable for use in a
professional healthcare facility environment. The Keeler
Slit lamp is not intended for use in home environment.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fluctuations /
flicker emissions IEC
61000-3-3
Complies
9.2 ELECTROMAGNETIC IMMUNITY
Guidance and manufacturer’s declaration – electromagnetic immunity
The Keeler Portable Slit Lamp is intended for use in the electromagnetic environment specified
below. The customer or user should ensure that it is used in such an environment.
Immunity test IEC 60601 Test
level
Compliance
level
Electromagnetic
environment – guidance
Electrostatic
discharge (ESD).
IEC 6100-4-2
± 8 kV contact
± 15 kV air
± 8 kV contact
± 15 kV air
Floors should be wood, concrete
or ceramic tile. If floors are
covered with synthetic material,
the relative humidity should be at
least 30%
Electrical fast
transient/burst.
IEC 61000-4-4
± 2 kV for power
supply lines
± 1 kV for power
supply lines
± 2 kV for power
supply lines
± 1 kV for input/
output lines
Mains power quality should be
that of a typical replace with
professional healthcare facility
Surge.
IEC 61000-4-5
± 1 kV line(s) to
line(s)
± 2 kV line(s) for
input/output line(s)
± 1 kV line(s) to
line(s)
± 2 kV line(s) for
input/output line(s)
Mains power quality should be
that of a typical replace with
professional healthcare facility

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PORTABLE SLIT LAMP by KEELER
Immunity test IEC 60601 Test
level
Compliance
level
Electromagnetic
environment – guidance
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines.
IEC 61000-4-11
UT= 0% 0.5 cycle
(0, 45, 90, 135, 180,
225, 270, 315°)
UT= 0%; 1 cycle
UT= 70%;
25/30 cycles (@ 0°)
UT= 0%;
250/300 cycle
UT= 0% 0.5 cycle
(0, 45, 90, 135, 180,
225, 270, 315°)
UT= 0%; 1 cycle
UT= 70%;
25/30 cycles (@ 0°)
UT= 0%;
250/300 cycle
Mains power quality should be
that of a typical professional
healthcare facility environment.
If the user of the Keeler Portable
Slit Lamp requires continued
operations during power mains
interruptions, it is recommended
that the instrument be powered
from an uninterruptible power
supply.
Power frequency
(50/60 Hz)
Magnetic field. IEC
61000-4-8
30 A/m 30 A/m Power frequency magnetic fields
should be at a level characteristic
of a typical location in a typical
professional healthcare facility
environment.
Note: UTis the a. c. mains voltage prior to application of the test level.
Immunity
test
IEC 60601
Test level
Compliance
level
Electromagnetic environment
– guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the Keeler
Portable Slit Lamp, including cables, than the
recommended separation distances calculated from
the equation applicable to the frequency of the
transmitter.
Recommended separation distance
Conducted
RF IEC
61000-4-6
6 Vrms 6 V d = 1.2 √ p
Radiated
RF IEC
61000-4-3
10 V/m 80MHz
to 2.7GHz
10 V/m d = 1.2 √ p 80MHz to 800 MHz
d = 2.3 √ p 800MHz to 2.7GHz

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Where p is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey¹,
should be less than the compliance level in each
frequency range.²
Interference may occur in the vicinity of
equipment marked with this symbol.
Note 1: At 80MHz and 800MHz, the higher frequency range applies.
Note 2: These guide lines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
1 Field strengths from fixed transmitters, such as base stations (cellular / cordless) telephones and land mobile
radios, amateur radio,AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy.To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey
should be considered. If the measured field strength in the location in which the Keeler Portable Slit Lamp is used
exceeds the applicable RF compliance level above, the Keeler Portable Slit Lamp should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as re-orientating or
relocating the Keeler Portable Slit Lamp.
2 Over the frequency range 150kHz to 80 MHz, field strengths should be less than 10 V/m.
9.3 RECOMMENDED SAFE DISTANCES
Recommended separation distances between and mobile RF communications
equipment and the Keeler Portable Slit Lamp
The Keeler Portable Slit Lamp is intended for the use in an electromagnetic environment in
which radiated RF disturbances are controlled.The customer or the user of the Keeler Portable
Slit Lamp can help prevent electromagnetic interference by maintaining a minimum distance
between mobile RF communications equipment (transmitters) and the Keeler Portable Slit Lamp
as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum output
power of transmitter (W)
Separation distance according to frequency of
transmitter (m)
150 kHz to 80MHz
d = 1.2√ p
80MHz to 800MHz
d = 1.2√ p
800MHz to 2.7GHz
d = 2.3√ p
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23

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For transmitters rated at a maximum output power not listed above, the recommended
separation distance din metres (m) can be determined using the equation applicable to the
frequency of the transmitter, where p is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
Note: At 80MHz and 800MHz, the separation distance for the higher frequency applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
9.4 TECHNICAL SPECIFICATIONS
Biomicroscope
Type Binocular Handheld Biomicroscope Slit Lamp
Optics Converging binoculars at 13˚
Magnification PSL One: 10x fixed PSL Classic: 10x and 16x, lever
change
Objective lens working distance @ 10x 100mm PSL One PSL Classic
Objective lens working distance @ 16x 80mm PSL Classic
Field of view @ 10x 16mm PSL One PSL Classic
Field of view @ 16x 10.5mm PSL Classic
34, 22, 14, 8.5 and 5.5 mm | 22, 14 & 8.5mm
PD range 50mm to 72mm
Eyepiece dioptric adjustment range ± 7 Dioptres
Size: Hand held device
Size: Docking station
238 x 116 x 210 mm
205 x 138 x 40 mm
Weight: Hand held device
Weight: Docking station
~900g
300g
Slit and filter system
Slit type Rotating Slit Wheel Selection Slit Lamp
Slit Width 0.15mm, 0.5mm, 0.8mm and 1.6mm slits, 12mm circle
and a 1mm square
Slit Length 12mm
Filters Red free, Blue, Neutral density 0.8 and Clear
IR protection Inbuilt IR cut filter
Slit angle ± 60˚
Illumination control Continuously variable from low to full brightness

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PORTABLE SLIT LAMP by KEELER
Power Supply
Power supply unit Switch mode, (100V-240V input) ± 10% multi plug compliant to EN/
IEC 60601-1 EN/IEC 61000-6-2, EN/IEC 61000-6-3
Power supply output 30VA (12V DC 2.5A)
Complies with Electrical Safety (Medical) EN/IEC 60601-1
Electromagnetic compatibility EN/IEC 60601-1-2
Ophthalmic instruments - Fundamental requirements and test methods
ISO 15004-1
Ophthalmic instruments - Optical radiation hazard ISO 15004-2
Environmental Conditions:
USE
35°C
10°C
90%
30%
1060 hPa
800 hPa
Shock (without packing) 10 g, duration 6 ms
STORAGE CONDITIONS
55°C
-10°C
95%
10%
1060 hPa
700 hPa
TRANSPORT CONDITIONS
70°C
-40°C
95%
10%
1060 hPa
500 hPa
Vibration, sinusoidal 10 Hz to 500 Hz: 0.5g
Shock 30 g, duration 6 ms
Bump 10 g, duration 6 ms

17 EN
PORTABLE SLIT LAMP by KEELER
10. ACCESSORIES AND SPARES
Item Part Number
Aluminum carrying case 3010-P-7000
11. PACKAGING AND DISPOSAL INFORMATION
Disposal of old electrical and electronic equipment
This symbol on the product or on its packaging and instructions indicates
that this product shall not be treated as household waste.
To reduce the environmental impact of WEEE (Waste Electrical Electronic
Equipment) and minimise the volume of WEEE entering landfills we
encourage at product end of life that this equipment is recycled and reused.
If you need more information on the collection reuse and recycling then please
contact B2B Compliance on 01691 676124 ([phone]). (UK only).
Any serious incident that has occurred in relation to the device must be reported to
the manufacturer and the competent authority of your Member State.