User Manual
19 inch LCD Monitor for Medical
HL1928M-L/R
Ver. A0
Change History
Version Date Author Modification
A0 Review March 1, 2012 Xu Hongjie
Preliminary Release
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2012-3-1
User Manual HL1928M-L/R
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Contents
1. Application........................................................................................................................................................................3
2. Declarations ......................................................................................................................................................................4
3. Installation.........................................................................................................................................................................9
4. Start-up..............................................................................................................................................................................9
4.1 Connecting the power and signal cables ...............................................................................................................10
4.1.1 Little cover (removing) ..............................................................................................................................10
4.1.2 Cable (attaching) ........................................................................................................................................ 11
4.1.3 Little cover (attaching)...............................................................................................................................12
Connect the little cover to the rear cover. ...........................................................................................................12
4.2 Power up the display .............................................................................................................................................12
4.3 Adjusting the image geometry ..............................................................................................................................12
4.4 Adjusting the brightness and contrast....................................................................................................................12
4.5 Screen saver ..........................................................................................................................................................13
5. Connections.....................................................................................................................................................................14
5.1 Connecting the flat panel display..........................................................................................................................14
5.2 Connection panel...................................................................................................................................................14
5.3 Information on additional serial interface (Service Only).....................................................................................14
5.4 Analog and digital inputs (DVI,VGA, BNC)........................................................................................................15
5.5 Power supply connection ......................................................................................................................................15
5.6 Serial interface ......................................................................................................................................................16
6. Adjustments.....................................................................................................................................................................16
6.1 Picture adjustment.................................................................................................................................................16
6.2 Optimum picture quality .......................................................................................................................................18
6.3 OSD Menu ............................................................................................................................................................18
6.3.1 Keys assignment and operation LED.........................................................................................................18
6.3.2Key Functions without active OSD Menu ..................................................................................................19
6.3.3Key Functions in the OSD Menu ................................................................................................................19
6.3.4Submenu Calls ............................................................................................................................................19
6.3.5Locking of OSD Menu................................................................................................................................19
6.3.6Description of OSD Menu...........................................................................................................................19
7. Fault diagnostics .............................................................................................................................................................24
8. Technical data..................................................................................................................................................................25
8.1 Display ..................................................................................................................................................................25
8.2 Power supply.........................................................................................................................................................26
8.3 Electronics.............................................................................................................................................................27
8.4 Inputs/outputs........................................................................................................................................................27
8.4.1 Analog signal input ....................................................................................................................................27
8.4.2 Digital signal input.....................................................................................................................................27
8.4.3 Serial interface ...........................................................................................................................................28
8.4.4 Timing Input...............................................................................................................................................28
8.5 Controls and connection elements ........................................................................................................................28
8.6 Mechanical design.................................................................................................................................................28
8.7 Climatic conditions ...............................................................................................................................................29
8.8 Mechanical requirements ......................................................................................................................................30
8.9 Safety specifications .............................................................................................................................................30
8.10 Electromagnetic compatibility ............................................................................................................................30
9. Dimensional drawings.....................................................................................................................................................31
9.1 Front , Platform and Side view .............................................................................................................................31
10 Remarks and contact address .........................................................................................................................................32
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1. Application
This high-resolution color display is specifically designed to meet the rigorous
performance standards needed for diagnostic, interventional radiology, and other
medical applications. To guarantee image integrity, features include accurate
signal conversion and a wide range of interfacing options.
Compact design -Low weight and small size with improved performance make the
monochrome flat panel display HL1928M preferable to conventional CRT monitors.
Embedded LUT(Look Up Table )-This monitor is factory calibrated to achieve
DICOM part 3.14 compliance and Linear gray level reproduction at the factory set
point. Five different settings are stored within the display.
Screen resolution- HL1928M is equipped with a panel with Super In Plane
Switching technology. The optimal picture resolution is 1280 x 1024 pixels. Video
signals with other resolutions typical to medical engineering are optimally zoomed
in or out to the screen size.
Fast backlight stability- The luminance stabilization circuit employs a built in
photo sensor to keep the back-light lamps at a constant luminance for consistent
calibration over the life of the display and can control the back light system
automatically to extend the life of the monitor and achieve very short warming up
time.
Multi-interface for video inputs- Support DVI-D,DVI-A,BNC (combined with
optional BNC cable) video inputs.
Digital control interface-The monitor has an asynchronous RS-232 architecture
interface for remote control, such as Brightness, Contrast etc. The protocol of RS-232
is compatible with GE OEC 16 inch CRT monitor.
Left and Right Monitor-The monitor can be supported in pairs. The left monitor has
protective glass in the front and the right monitor has infrared touch screen in the
front.
Remark -All relate to the touch screen only applies to HL1928M-R.
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2. Declarations
Safety precautions
WARNING:
To avoid risk of electric shock, this equipment must only be connected to a
supply mains with protective earth.
APPLIANCE COUPLER or separable plug of is used as isolation means to isolate the
equipment from mains supply.
Accessory equipment connected to the analog and digital interfaces must be
certified according to the respective IEC/EN standards (e.g. IEC/EN 950 for data
processing equipment and IEC/EN 60601-1 for medical equipment ).
Medical Equipment
With respect to electric shock, Fire and mechanical
hazards only in accordance with UL 60601-1
and CAN/CSA C22.2 No. 601.1
Furthermore all configurations shall comply with the valid version of the system
standard IEC/EN 60601-1-1.Everybody who connects additional equipment to
the signal input connector or signal output connector configures medical system,
and is therefore responsible that the system complies with the requirements of
the valid version of the system standard IEC/EN 60601-1-1.If in doubt, consult
our technical service department or your local distributor.
Regular maintenance and calibration are recommended
Please note that liquid crystal displays such as the HL1928M do not have a
failure rate of zero and image parameters may change over time (e.g.
luminance or discoloration). Please ensure that all measures are taken to
prevent injuries or incorrect diagnoses. Regular maintenance and calibration
are recommended.
Correct and safe operation of the flat panel displays is dependent on proper
transport, storage, installation and assembly, as well as careful operation and
maintenance. The units must only be used for applications for which monitors
are normally used. The information in the Section "Technical data" must be
observed exactly.
For the sake of safety, the following precautions must be observed:
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Danger: There is a danger to life if the warning information is not observed.
Severe personal injury or damage to property may occur.
Do not open the unit yourself.
Certain components inside the units are at high-voltage, i.e. touching these
components presents a danger to life!
Only use a perfect power supply cable
A damaged power supply cable may result in a fire or electric shock. When
disconnecting the power supply cable, always do so by holding the plug.
Only use the same type of fuse
T2A/250V
Do not insert any objects into the housing
Objects inserted into the housing may result in damage to the unit or personal
injury.
Do not place any objects on top of the units
Penetrating liquids may result in a fire or electric shock.
Connection
No contact to a patient must occur when handling the cables.
To avoid risk of electric shock, this equipment must only be connected to a
supply mains with protective earth.
Do not hurt yourself, when moving the display
The display can be tilted backwards and forwards. Please, pay attention not to
hurt yourself, when moving the display. Fingers or small objects may get stuck
at the bottom of the display.
When moving the display up and down (height adjustment), make sure you do
not squeeze your hand or any other object. The minimum distance between the
display edge and the bottom is only 59 mm.
Caution
Incorrect installation may result in extensive damage to property.
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Installation should be carried out by trained personnel
When installing your medical electrical system with our products in an
environment with patients, please observe the safety requirements of EN
60601-1-1 (IEC 601-1-1) for "Specifications for the safety of medical electrical
systems" in order to prevent injury to patients and users of your systems.
For certain applications, the video earth can be separately connected to the PE
via the additional PE connection in the plug panel (observe IEC 601-1-1).
Take appropriate measures to particularly ensure that discharge currents
remain below the required limits: Appropriate measures:
- Disconnecting devices for signal input or output unit
- Use of a safety transformer
- Use of additional PE conductor
Only use the signal cables and interface cables specified by the manufacturer
for the installation.
Use power cables with a PE contact. Only insert into sockets with a PE contact.
For certain applications, the video earth can be separately connected to the PE
via the additional PE connection in the plug panel (observe IEC 601-1-1).
Close the plug panel using the provided cover , and secure using the screws.
Mounting information: The stability of the display must be guaranteed
following mounting of the foot/holder. The immersion depth of the mounting
screws has to be 10 to 12 mm including a 3 mm VESA mounting plate. (See
also table "Mounting screws" on the following). All these requirements are
satisfied when using the original foot. All requirements must be observed when
using customer-specific mounting solutions.
Notice for users: The plug panel closed by the cover, must not be opened by
users.
Servicing information: If housing components have to be removed for
servicing, this must not be carried out in the presence of patients, the user, or
other persons not involved with servicing.
The following applies to installations in the USA and Canada: Molded power
supply plugs must comply with the requirements for "Hospital Grade
Attachments" UL 498.
Caution
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Failure to observe the warnings may result in substantial damage to
property.
Provide sufficient heat dissipation
Holes are provided at the rear of the housing. The display must be placed or
secured on a hard, level surface at least 10cm from the wall and 15cm away
from other devices. Several displays can be butt-mounted horizontally and
vertically.
The following must be observed when mounting (VESA connection):
Mounting screws
Number 4
Thread M4
Strength 12
Immersion depth
Min. 10 mm; Max. 12
mm
Torque Max. 3 Nm
The permissible ambient temperature range (5 °C ... 40 °C) must not be violated.
Do not subject device to unnecessary shocks. Take care when transporting!
Use the original packaging! The panel in particular should be protected
against shocks.
When touching the panel surface, the mechanical contact or an electrical
discharge may cause a brief disturbance in the picture quality.
Care of unit / cleaning agents
− The front panel is extremely sensitive to mechanical damage. Avoid all
scratches, knocks etc.!
− Remove water drops immediately; extended contact with water discolors the
surface.
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Clean the front panel when dirty， using a micro fiber cloth and, if necessary, a
glass cleaning agent. Only clean housing parts using a cleaning agent for
plastics.
Note:
Do not use cleaning agents containing solvent, e.g. petroleum spirit!
Explanation of the symbols
Attention: Consult the accompanying documents
Alternation current (AC)
Protective earth
Danger, high voltage
Dispose of in accordance to your countries requirements
Dispose of in accordance to your countries requirements
China Rohs symbol
European comformity
China Compulsory Certification
TUV approval mark
Environmental Requirements
Mercury
The Cold Cathode Fluorescent Lamp (CCFL) utilized as the light source for
LCD displays, The CCFL is a low-pressure discharge lamp. Construction of the
lamp uses a glass tube coated on the inside with an inorganic phosphor. The
sealed lamp’s envelope contains a mixture of mercury; Mercury damages the
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nervous system and is toxic in high doses.
Lamp Disposal
Hg
Lamp(s) inside this product contains mercury and must be recycled or disposed
of according to state, local or federal law. For more information, Contact the
electronic industries alliance at www.Elae.org. For lamp specific disposal
information check www.lamprecycle.org.
3. Installation
Provide adequate ventilation
Ventilation slots are located on the rear of the housing.
Ambient temperature
The permissible ambient temperature range must not be violated.
Minimize reflections
The display should be positioned so that reflections of lights, windows, furniture
with shiny surfaces or light-colored walls do not appear on the screen.
Minimize mirroring
In order to reduce mirroring on the unit, ceiling lighting or reflected light (no
dazzling) should be used. Mirroring can only be eliminated if the screen is clean
and free of grease. Clean the display using a suitable micro fiber cloth.
Change of environment
If the unit is brought into a warm environment from a cold one, water may
condense upon it. The unit should not be switched on until all the condensed
water has evaporated, including that inside the unit. This may take several
hours, depending on the conditions.
4. Start-up
Caution
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In order to ensure safe operation of the equipment, close attention must be paid
to the information contained in this Instruction Manual as well as the warnings in
Section 2 "Safety precautions".
Caution Information for end customer
None of the settings must be changed on site by the user, otherwise the
guarantee is canceled. This also applies to settings made using the HL1928
M keys. These are therefore locked for certain applications. If settings have to
be changed, please contact the responsible servicing department.
The display is designed for individual connection to a graphics card with a
power supply of 100 or 240 Volt (TN-S system with PE conductor). If the display
is to be used in a sequence of several displays, or if it is not exactly known
whether the graphics card standard can be output by the display, refer to
Section 5.1 "Connection of the flat panel display".
In order to start the unit properly, the following steps should be carried out in the
given sequence.
4.1 Connecting the power and signal cables
Caution
Use a power cable with PE conductor corresponding to the safety requirements
of the respective country of use. Note for North America: Molded power supply
plugs must comply with the requirements for hospitals with respect to CSA Std.
C22.2 No. 21 and UL 498.The power supply and signal connections are located
on the rear of the monochrome flat panel display.
Note
Note that the cables are not positioned when you receive the display (power
cable and BNC cable). The following steps are only necessary if you need to
connect/disconnect the cables of the scope of supply.
4.1.1 Little cover (removing)
Remove the one screws with a M4 Slot screwdriver (one turn suffices). Open
the little cover and remove it
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4.1.2 Cable (attaching)
Connect the cables to the display.
VGA connector: the flat panel display can be connected to the computer system
using a VGA Cable. The display is adapted using an OSD menu.
BNC connector: the flat panel display can be connected to the video camera
using a BNC Cable . The display is adapted using an OSD menu.
DVI connection: The connection to the computer can also be made via the
digital single link. The picture quality, noise immunity and radiated interference
of the complete system depend on the cable quality and length.
DIN6 connection: you can connect the display via the DIN6 connector to the
computer for firmware updating.
Serial connection：you can connect the touch screen via the Serial connector to
the computer to control the touch screen.
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4.1.3 Little cover (attaching)
Lead the monitor end of the cables through the little cover’s cable duct.
Connect the little cover to the rear cover.
4.2 Power up the display
Power up the display and the operation LED lights up (color: green, provided the
timing has been recognized – please refer to section 7 "Fault diagnostics").
4.3 Adjusting the image geometry
The display automatically recognizes the used standard, and set-up values for
each standard are preprogrammed. However, depending on the graphics card
used, it may still be necessary to align and size the picture for the selected
standard (see Section 6.1 "Picture adjustment"). Normally auto adjust will work.
4.4 Adjusting the brightness and contrast
The brightness and contrast must be adjusted for the respective graphics card
(different output levels) in the system on site.
Note on adjustment
− Use the SMPTE test pattern.
− Adjust the brightness so that image sections with 5% and 0% blackness still
visibly contrast from one another.
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− Adjust the contrast so that image sections with 95% and 100% whiteness
still visibly contrast from one another. To adapt the luminosity to the ambient
lighting, adjust the backlight brightness (note: 500 cd/m² factory setting is then
modified).
4.5 Screen saver
A screen saver function should be used in order to reduce "image sticking"
which can occur in TFT displays.
It is high risk to display a static graphic over half an hour.
Image sticking is the effect where a faint image of the previous screen contents
can still be seen after the display contents have changed. By using a screen
saver with permanently changing screen contents, unnecessary effects of the
same image are avoided.
If the keyboard is locked, contact the servicing department in order to unlock it.
The guarantee is cancelled if you unlock it yourself!
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5. Connections
Male
-
DB9 DIN6 BNC VGA DVI
-
D
IEC
-3P
Infrared Touch Panel
LCD
RS232 Communication
5.1 Connecting the flat panel display
Note
All screening precautions contained in the corresponding EMC guidelines must
be observed. If these guidelines are not observed, interference signals could
penetrate the monitor.
Information on cable installation
Only screened cables are permitted for the signal connections.
All connectors should be of screw or locking types (as far as possible).
Signal and power cables must not be routed in the same duct.
The display must not share a power supply with motors or valves (glitches!).
5.2 Connection panel
A connection panel for the signals and power supply is located at the rear of the
flat panel display underneath the little cover.
Only for Right Side
5.3 Information on additional serial interface (Service Only)
DIN6 connection: you can connect the display via the DIN6 connector to the
computer for firmware updating and monitor test.
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5.4 Analog and digital inputs (DVI,VGA, BNC)
DVI socket
With DVI digital signal through DVI cable.
VGA socket
With VGA cable for VGA input.
BNC connector
Use BNC cable (optional) for BNC input.
5.5 Power supply connection
Note
Device fuses can not be exchanged outside of the repair centers.
The display power supply is connected using an appliance plug. Only use the
power cable supplied in the delivery, or a cable with PE conductor and
appliance socket to DIN 49 547, IEC 320.
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Caution
A power cable with PE conductor must be used which corresponds to the safety
requirements of the respective country of use.
5.6 Serial interface
Caution
No other units may be connected to the service socket. Connection or
disconnection of a unit may only be carried out by servicing personnel or those
trained by them. A Serial Spot Meter or Universal Serial Luminance Meter must
not be connected in the presence of patients.
The display has a serial RS 232 DIN6 interface sockets to update the SW.
6. Adjustments
6.1 Picture adjustment
This section describes the settings for operation of the flat panel display with a
video source. The most important settings are:
Adjusting the graphics memory of the video source
As with all monitors, the flat panel display also has certain limits, e.g. maximum
resolution and vertical frequency. The graphics adapter must be set when using
the flat panel display such that the limits are observed.
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Fine adjustment of the flat panel display
Note
Fine adjustment of the flat panel display can only be carried out via the analog
port. The digital input (DVI-D,) does not require a fine adjustment since the
display signal is always optimum.
RGB picture sources via VGA connector supply analog signals which are
basically intended for conventional CRT monitors and which are processed
directly by them.
In contrast, the analog signals must be converted for a flat panel display into
digital signals by a video digitizer. Depending on the picture source, cable length
and video mode (e.g. VGA, SVGA, XGA) this conversion may cause certain
deviations which cannot be corrected fully automatically by the flat panel display.
A manual fine adjustment is therefore necessary during which the flat panel
display (or, more precisely, the video digitizer) is matched to the respective
video source. The fine adjustment comprises e.g. setting the horizontal/vertical
picture position and the picture sharpness. This can be carried out for the flat
panel display HL1928M using an OSD menu.
To optimize the display settings for the installed graphic board, and to ensure all
gray levels are distinguishable, we recommend to adjust the brightness and
contrast levels for and only for analog inputs. Note that the calibration (in the
Look Up Table) is not changed by these adjustments (All the monitors are and
remain factory calibrated):
Using a 100% black picture and an appropriate measurement device (a spot
meter recommended), decrease the brightness level using the OSD controls
until the measurement device displays a constant level (i.e. the measured value
no longer changes). Once this is achieved, increase the brightness level slightly
until the display is just above the absolute lowest black level (one step is
generally sufficient).
Similarly, set the white level using a 100%-white test pattern and the
measurement device. Only the contrast level should be adjusted to ensure that
the black level remains unchanged.
Control again the black value did not change. In case it did you need to
duplicate the two previous steps until it does not change anymore (cause:
pedestal).
Increase the contrast level until the measurement device no longer detects an
increase in luminance. Once this is achieved, decrease the contrast level
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slightly (1 or 2 steps is generally sufficient).
At this point, the display is configured for optimal performance with the installed
graphic board. If one is not yet satisfied with the luminance level, the black and
white levels can be further increased by adjusting the backlight level in the OSD
menu. Please note that higher backlight level settings tend to reduce the
stability of luminance over time.
6.2 Optimum picture quality
In order to achieve an optimum picture quality, the color flat panel display
HL1928M should be operated with a graphics resolution of 1280 x 1024 pixels
(settings for graphics card in the PC). When adjusting the picture position and
size, ensure that the picture appears exactly on the active surface of the display
and that it is not offset by even one pixel. For example, if the horizontal position
is offset by one step to the right, the right-hand edge of the picture will disappear,
and a black pixel column will appear at the left-hand edge. And similarly for an
offset to the left, top or bottom. If the vertical lines are still slightly fuzzy, adjust
the setting "Frequency/phase" (see Section 6.4 "Description of the menus"). 6.3
OSD menu
6.3 OSD Menu
6.3.1 Keys assignment and operation LED
A “dynamic help for keypad function” is available for each menu: it explains the
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role of each key depending on the OSD menu window, which is currently active.
6.3.2Key Functions without active OSD Menu
Key Action
Menu Activate OSD
6.3.3Key Functions in the OSD Menu
Keys Situation Action
Menu Always Jump to next line
Slide controller Increase Value Up
Command “Enter Key”
Down Slide controller Decrease value
SET Always Exit current menu
(Settings are retained)
6.3.4Submenu Calls
Press the “Menu” key while the OSD is active, the function icon will jump to next line. Pressing
the “Up” key, the coordinate submenu will be selected.
6.3.5Locking of OSD Menu
Keys Action
1 time SET key
2 times UP key within 3 second
Lock or unlock OSD
6.3.6Description of OSD Menu
OPERATION
Main Menu Function
Adjustment
range
Description
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Image
Brightness 0…255
Contrast
Black level
Sharpness
Reset
0…255
(Default=128)
0…255
(Default=128)
0…48
(Default=5)
Adjustment brightness of LCD
backlight to adapt total brightness for
room illumination.
Adjustment of contrast
This allows the brighter area to be seen
more distinctly. The center point is in
128 position.
It is used to adjust the black level of
the monitor. The center point is in 128
position.
This allows the darker area to be seen
more distinctly.
One of the 48 filters can be selected for
the focus setting to reduce scaling
artifacts. Interpolation filters depend
on the input resolution.
While choose Reset state it will recall
factory default. Brightness, Contrast,
Backlight setting, sharpness, gamma
etc.
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