Scan Optics SO-5800 User manual

SCAN OPTICS
SO-5800
MICROSCOPE
USER MANUAL

SO-5800 Ophthalmic Microscope User Manual Page 2of 31
Issue number 2.0 Reference SO-5800-UM-2
CONTENTS
INTRODUCTION ---------------------------------------------------------------------------------------------- 3
MICROSCOPE FEATURES ---------------------------------------------------------------------------------- 4
Floor stand ---------------------------------------------------------------------------------------------- 5
Pillar ---------------------------------------------------------------------------------------------------------- 6
Lower panel ---------------------------------------------------------------------------------- 6
Power supply ---------------------------------------------------------------------------------- 7
Horizontal arm ---------------------------------------------------------------------------------- 9
Pantograph arm ---------------------------------------------------------------------------------- 10
Gas spring adjustment ---------------------------------------------------------- 11
Safety mechanism ---------------------------------------------------------------------- 12
X-Y unit ---------------------------------------------------------------------------------------------- 13
Microscope head assembly ---------------------------------------------------------------------- 15
Power system ---------------------------------------------------------------------------------- 16
Lighting system ---------------------------------------------------------------------- 16
Focus mechanism ---------------------------------------------------------------------- 17
Zoom mechanism ---------------------------------------------------------------------- 17
Viewing system ---------------------------------------------------------------------- 17
Tilt adjustment ---------------------------------------------------------------------- 19
Handles ---------------------------------------------------------------------------------- 19
Video system ---------------------------------------------------------------------------------------------- 20
Assistant microscope ---------------------------------------------------------------------- 22
Foot control ---------------------------------------------------------------------------------------------- 26
ROUTINE MAINTENANCE
Changing the lamp ---------------------------------------------------------------------------------- 27
Changing mould protection pellets ---------------------------------------------------------- 28
Adjusting focus friction ---------------------------------------------------------------------- 30

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INTRODUCTION
Please read the following information carefully before using the Scan Optics
SO-5800 ophthalmic microscope. Scan Optics is responsible for the safety,
reliability and performance of the equipment only if it is used in accordance
with these instructions.
This microscope is designed for use by a certified practitioner, for magnified
observation of patients, and for use in an operating theatre as an observation aid
during surgery.
Environmental storage and packing conditions of 60-95% relative humidity and
10-40°C are recommended for this product.
No parts or accessories supplied with this microscope are supplied in a sterile
condition.
Apart from those instructions within this manual, there are no user-serviceable
parts in this microscope. Scan Optics will retain the discretion to advise
whether any repairs may be taken out by external qualified technical personnel,
or whether part(s) of the microscope must be returned to the manufacturer’s
premises for service or repairs to be carried out under warranty or otherwise.
Where appropriately qualified technical personnel are identified by a user, and
ratified by Scan Optics, then Scan Optics will make available on request any
information which will assist in repairing the equipment.

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Issue number 2.0 Reference SO-5800-UM-2
MICROSCOPE FEATURES
Please refer to the diagram below to help you identify the main assemblies of
your SO-5800 microscope.
MICROSCOPE
HEAD ASSEMBLY
FLOOR
STAND
MONITOR
FOOT CONTROL
X-Y POSITIONING
UNIT
POWER
SUPPLY
PANTOGRAPH
ARM
HORIZONTAL
ARM
LOWER PANEL
PILLAR

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FLOOR STAND
The floor stand provides a stable platform for the microscope, enabling it to be
moved freely and also to be locked in to position.
To move the floor stand, first fold the pantograph arms carefully back against
the horizontal arm, and lock the arms to minimise the risk of accidental damage
to the microscope head. Depress the latches marked on each of the legs in the
diagram above to unlock the wheels. Then grip the handles on the side of the
main pillar and move the floor stand as desired. To lock the floor stand depress
the large black knobs as shown on the diagram. Note that no twisting of the
knobs is necessary. To unlock the floor stand, simply depress the latches on
each leg and the locks will spring up.
UNLOCK
LOCK

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PILLAR
The pillar contains two panels, a lower panel for connecting to mains power and
the foot control, and a power supply panel for controlling microscope functions.
LOWER PANEL
The foot control and IEC mains plug should be connected as shown in the
diagram below. Note that the retaining clip should be used to avoid accidental
removal of the mains plug.
When attaching the foot control cable, align the square feature on the plug with
the recess on the panel socket. Insert the plug in the socket and rotate the
housing clock-wise to secure the connection.
FOOT CONTROL
CONNECTION
IEC MAINS INLET
RETAINING CLIP

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POWER SUPPLY
The power supply controls some of the most important functions of the
SO-5800 microscope.
To switch the microscope on, depress the mains switch. An indicator on the
switch will glow, indicating that power is available. Press the standby button
jonce (the LED indicator will turn off) to allow microscope functions to be
activated. Press the lamp button konce (the LED indicator will come on) to
turn the lamp on. The lamp intensity may be controlled in five discrete steps by
depressing the por qbuttons as appropriate, while the intensity setting will be
displayed by the indicator LEDs. If the standby button is depressed (its LED
7A CIRCUIT
BREAKER
3A CIRCUIT
BREAKER
X-Y
SPEED CONTROL
X-Y
INDICATOR
LAMP ON
INDICATOR
LAMP
INTENSITY
INDICATORS
MAINS SWITCH
LAMP ON/OFF
BUTTON
STANDBY
INDICATOR
STANDBY
BUTTON
LAMP INTENSITY
CONTROL BUTTONS
FOCUS/ZOOM
SPEED CONTROL
FOCUS/ZOOM
INDICATOR

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indicator will turn on) the lamp will switch off, when the button is depressed
again, the lamp will return to its previous intensity setting.
Speed of X-Y movement and focus/zoom movement may be controlled by
rotating the control knobs clock-wise to increase speed or counter-clock-wise to
decrease speed. Note that at extremely low speed settings, movement may be
imperceptibly slow or completely absent.
The X-Y indicator will light up constantly when the foot control is used to
position the microscope laterally. The indicator will flash when the return to
centre function has been activated from the X-Y unit.
The Focus/zoom indicator will light up constantly when the foot control is used
to focus the microscope up or down, or to zoom the microscope in or out.

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HORIZONTAL ARM
The horizontal arm rotates about the top of the pillar and provides a connection
interface for the main microscope power cable. Stops are fitted to prevent the
arm rotating continuously around the pillar; this prevents the internal cabling
from twisting. The range of movement allowed is 300°.
The knob at the top of the pillar labelled ‘SHOULDER LOCK’ enables the
horizontal arm to be fixed in position. To lock the arm, rotate the knob in
clock-wise fashion.
To connect the microscope power cable to the socket marked ‘MICROSCOPE
POWER OUT’ align the square feature on the plug with the recess on the panel
socket. Insert the plug in the socket and rotate the housing clock-wise to secure
the connection.
A knob marked ‘ELBOW FRICTION’ is provided beneath the end of the
horizontal arm and allows friction to be applied to the swivel joint between the
pantograph arm and the horizontal arm. To increase friction, rotate the knob in
clock-wise fashion when viewed from beneath the horizontal arm.
ELBOW
FRICTION
MICROSCOPE
POWER
CABLE
SHOULDER
LOCK

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PANTOGRAPH ARM
The pantograph arm rotates about the end of the horizontal arm and also
provides a means for manually raising and lowering the microscope head. The
pantograph arm includes features that enable the user to achieve the required
type and feel of microscope movement.
To lock the arm in a particular vertical position, simply rotate the ‘ARM
LOCK’ knob clock-wise. To lock the rotational movement of the X-Y unit and
microscope head below the end of the pantograph arm, rotate the ‘ROTATION
LOCK’ knob clock-wise.
ARM LOCK
SAFETY
SET KNOB
ROTATION LOCK
GAS SPRING
ADJUSTER

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GAS SPRING ADJUSTMENT
A gas spring inside the pantograph arm provides lifting force, which is able to
support the weight of the X-Y unit and microscope head at the end of the arm.
By moving the end position of the gas spring, the amount of lifting force can be
varied depending on the preference of the user or to suit the weight of additional
accessories which may be placed on the microscope head assembly.
TO INCREASE LIFTING FORCE
ROTATE KNOB CLOCK-WISE
TO MOVE END POSITION DOWN
TO DECREASE LIFTING FORCE
ROTATE KNOB COUNTER-CLOCK-WISE
TO MOVE END POSITION UP

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SAFETY MECHANISM
The SO-5800 is fitted with a safety stop mechanism that enables the user to pre-
set a particular height below which the pantograph arm will not move. Where
the knob position is set closest to the horizontal arm end, there is no impediment
to movement. When the knob is locked closest to the microscope head end,
there will be almost no movement allowed in the pantograph arm below its rest
(UP) position. Locations in between will allow a limited rage of movement.
Note that the knob MUST be locked in position for the safety mechanism to
take effect.
UNLOCK
KNOB
SLIDE INTO
POSITION
LOCK
KNOB
PUSH KNOB IN

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X-Y UNIT
The X-Y unit is positioned below the rotating joint at the end of the pantograph
arm. This unit allows the user to move the microscope head laterally, by means
of the joystick on the foot control. To move the head to the right, simply move
the joystick to the right, to move the head forward, move the joystick forward,
and so on. Movement combinations may also be achieved by moving the
joystick diagonally. Speed of X-Y movement is controlled using the knob on
the main power supply panel.
The X-Y unit also acts as an interface for distributing power to the microscope
head and video camera as well as the X-Y unit itself. These connections are
labelled on the rear panel of the X-Y unit. All voltages in this region are
<15Vdc
RETURN TO CENTRE
SENSITIVITY
ADJUSTMENT
HEAD POWER OUT
CONNECTION
VIDEO CAMERA
POWER OUT
CONNECTION
MICROSCOPE
POWER IN
CONNECTION
X-Y UNIT REAR PANEL

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A return to centre (RTC) function built in to the X-Y unit allows the user to
return the microscope head to a home position, centred on the middle of the
range of movement. To activate this function, move a hand or object close to
the small circular window on the front panel of the X-Y unit. The RTC function
will activate after approximately two seconds, to prevent accidental activation.
The LED above the window will flash intermittently while the unit is returning
to centre. This LED will also provide a continuous light when the joystick on
the foot control is used to drive the head in normal fashion.
The return to centre function is activated when light is blocked from entering
through the sensor window by the user’s hand or another object. The sensitivity
of this detector may be adjusted by rotating the knob on the rear panel of the X-
Y unit. The ideal setting is such that the user need not touch the window but the
sensitivity is not so fine as to cause nuisance activation. This sensitivity may
need adjustment if the ambient lighting conditions where the microscope is used
have changed. If the microscope is used in darkened conditions, it is
recommended that the RTC function is turned off by adjusting the
sensitivity, to prevent accidental engagement. The sensitivity knob itself
may then be used to return the microscope to centre. Note that on some
model SO-5800 microscopes this sensitivity is adjusted by inserting a Philips
head screwdriver through a hole in the upper housing of the X-Y unit. In this
case the screwdriver engages in a trim pot which may be rotated, otherwise the
effect is identical.
X-Y UNIT FRONT PANEL
LED
SENSOR WINDOW

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MICROSCOPE HEAD ASSEMBLY
The microscope head is suspended beneath the X-Y unit by means of a rigid
bracket, which is clamped at each end. The head assembly includes viewing
optics, light source and various fittings and mechanisms to aid the user in
positioning the microscope.
MICROSCOPE HEAD ASSEMBLY
LEFT SIDE VIEW
SUSPENSION BRACKET
LAMP HOUSING
TILT ADJUSTMENT
KNOB
MANUAL FOCUS
KNOB
LOCKING PIN
SPARE LAMP
MODULE
VIDEO CAMERA
ASSEMBLY
MANUAL ZOOM
KNOB
ADJUSTABLE
EYEPIECE
FIXED
EYEPIECE
GUIDE HANDLE
LIGHT DELIVERY
PRISM
SIDE HANDLE

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POWER SYSTEM
Power to the head is delivered from the X-Y unit in to a connector block, which
distributes power to the various systems. All power in this region is < 15Vdc.
The lamp power cable connects the lamp housing to the connector block and
provides voltage for the halogen lamp and its cooling fan. Power is also
provided to the zoom drive motor and internally to the focus drive motor.
LIGHTING SYSTEM
A lamp housing provides a means for mounting a 50W halogen lamp, which
delivers light to the viewing field through a series of lenses, filters and a prism.
The lamp is supplied fixed in a holder, which is then mounted in a module –this
ensures that the amount of light delivered is maximised. The cooling fan
enables the lamp to be run at maximum intensity if desired without heating the
housing to extreme levels. The prism is positioned to optimise red reflex –this
means that the prism tip may be visible when the viewing field is maximised,
that is at the lowest magnification settings.
MICROSCOPE HEAD ASSEMBLY
RIGHT SIDE VIEW
FOCUS DRIVE COVER
SIDE HANDLE
LOCKING PIN
ZOOM DRIVE
COVER
LAMP MODULE COOLING
FAN
CONNECTOR
BLOCK
HEAD POWER
CABLE
LAMP POWER
CABLE
ZOOM POWER
CABLE

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FOCUS MECHANISM
A geared dc motor provides the means for driving the head assembly up and
down for focussing via foot control. The motor is located inside the focus drive
cover. Focus speed may be adjusted by rotating the knob on the main power
supply panel. The manual knob located on the left side may be used instead of
the foot control, if this is a preference of the user or in the event of a power
failure. In this case the manual knob will simply drive the motor. When using
the manual focus knob, do not attempt to drive the focus using the foot control –
this will strip the drive gears. The range of focus movement is approximately
45 millimetres. A visual guide to the centre of the focus range is provided in
the form of black dots marked on the side of the focus mechanism. When the
dots are aligned, the focus system is set to the centre of the range.
ZOOM MECHANISM
The zoom mechanism can also be driven by foot control or by using the manual
zoom knob on the left side of the microscope head. A geared dc motor located
inside the zoom cover provides the means for foot controlled zooming. When
using the manual zoom, the manual knob will simply drive the motor. Do not
attempt to drive the zoom simultaneously using the foot control and the manual
knob. This will strip the drive gears. When the standard 0.62x objective lens is
used with this microscope, the range of magnification controlled by the zoom
mechanism is between 4x and 25x.
VIEWING SYSTEM
The optical head provides the means for viewing the subject matter under
magnification. There are adjustments available to suit the user in order to
achieve the clearest image in the most comfortable circumstances. The
pupillary distance (PD) may be adjusted manually by sliding one eyepiece
sideways –the other eyepiece will move simultaneously in the opposite
direction. On microscopes fitted with the optional PD adjuster, this is achieved
by rotating the knob that protrudes to the side of the eyepieces.
The adjustable eyepiece may be used to compensate for any refractive error
difference between the left and right eye of the user. First, rotate the adjustable
(left) eyepiece so that the scale is set to zero. Then focus the microscope while
closing the left eye and looking only through the right eyepiece. When the
microscope is focussed, close the right eye and look with the left eye through
the left eyepiece, and rotate the adjusting ring until the left eye is focussed.
Rubber eyepiece shields are provided to help the user view through the
eyepieces without being disturbed by ambient light. These shields are easily
removed or added by hand, and can be reversed to provide an aid to spectacle
wearers.

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Eyepiece caps are provided to protect dust entering the eyepiece tubes when the
microscope is not in use. Simply remove the eyepieces and replace them in
their protective wrapping, and insert the eyepiece caps in their place.
The working distance is fixed at 180 millimetres, where the standard 0.62x
objective is supplied. The working distance can only be adjusted by swapping
the objective lens to that of another magnification.
MANUAL
PD ADJUSTMENT
REFRACTIVE
ERROR
ADJUSTMENT

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TILT ADJUSTMENT
The entire head assembly may be tilted some five degrees forward or up to forty
five degrees back by rotating the tilt adjustment knob located beneath the
suspension bracket. This can be of some assistance to users of a shorter stature
who wish to use the microscope while seated.
Note that on some models, the tilt knob is located in front of the bottom end of
the suspension bracket, and not below it.
HANDLES
The SO-5800 is provided with two side handles and a front guide handle which
enable the user to manoeuvre the microscope into position, within the
limitations of the settings of the various locking knobs. The front guide handle
may be removed if desired by unscrewing the socket head cap screw that fixes it
to the front of the microscope head mounting bracket. The side handles may be
removed first by removing the locking pins then sliding the handles out. It is
necessary to remove one side handle if the assistant microscope is to be
mounted on the side of the microscope head assembly.
Note that sterilisable covers are provided which fit the side/guide handles, as
well as covers for the manual zoom and focus knobs, and the PD adjuster knob,
if fitted. This enables the user to use the microscope in a surgical environment,
if the covers are sterilised correctly.

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VIDEO SYSTEM
The SO-5800 microscope comes fitted with a video system enabling images
from a coaxial video camera to be displayed on a monitor mounted from the
main pillar. The SO-5800 can thus be used as a teaching microscope, or the
monitor used simply to display surgery for the benefit of theatre staff.
The SO-5800 is shipped with camera and video settings pre-set to suit local
conditions. These settings can however be adjusted to suit user preferences.
For a detailed reference to the settings available for camera and monitor, please
refer to the separate instructional leaflets provided which contain all relevant
information.
To connect the video system, first connect the video signal cable between the
camera and the monitor. First pass the cable through the clip on the side of the
X-Y unit. Rotate the right-angled connector at the camera end to ensure that the
cable does not interfere with the upper end of the focus range due to the
proximity of the X-Y unit. Then simply connect the camera power cable
between the camera and the X-Y unit, and connect the monitor power cable
between the monitor and the connector on the back of the main pillar.
FOCUS
ADJUSTMENT
VIDEO SIGNAL OUT
BNC CONNECTION
CAMERA POWER
CONNECTION
SHUTTER
SWITCH
WHITE BALANCE
SWITCH
WHITE BALANCE
ADJUSTMENT