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LP125WH2
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 12.5" HD TFT LCD
Customer Lenovo SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LP125WH2
Suffix SLB3
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY SIGNATURE APPROVED BY SIGNATURE
N. J. Seong / Manager
/
REVIEWED BY
/
S. S. Han / Manager
/ PREPARED BY
J. T. Kim / Engineer
J. M. Shin / Engineer
Please return 1 copy for your confirmation with Products Engineering Dept.
your signature and comments. LG Display Co., Ltd
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LP125WH2
Liquid Crystal Display
Product Specification
Contents
No ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTREISTICS 6
3-2 INTERFACE CONNECTION 8
3-3 LVDS SIGNAL TIMING SPECIFICATIONS 9
3-4 SIGNAL TIMING SPECIFICATIONS 11
3-5 SIGNAL TIMING WAVEFORMS 11
3-6 COLOR INPUT DATA REFERNECE 12
3-7 POWER SEQUENCE 13
4 OPTICAL SFECIFICATIONS 14
5 MECHANICAL CHARACTERISTICS 17
6 RELIABLITY 20
7 INTERNATIONAL STANDARDS
7-1 SAFETY 21
7-2 EMC 21
8 PACKING
8-1 DESIGNATION OF LOT MARK 22
8-2 PACKING FORM 22
8-3 Label Description 23
9 PRECAUTIONS 24
A APPENDIX. Enhanced Extended Display Identification Data 26
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LP125WH2
Liquid Crystal Display
Product Specification
3-2. Interface Connections
RECORD OF REVISIONS
EDID
Revision No Revision Date Page Description
ver
1.0 Apr. 19. 2012 - Final Specification 1.0
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LP125WH2
Liquid Crystal Display
Product Specification
1. General Description
The LP125WH2 is a Color Active Matrix Liquid Crystal Display with an integral LED backlight system. The
matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in
the normally white mode. This TFT-LCD has 12.5inches diagonally measured active display area with HD
resolution(1366 horizontal by 768 vertical pixel array). Each pixel is divided into Red, Green and Blue sub-
pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is
determined with a 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144
colors.
The LP125WH2 has been designed to apply the interface method that enables low power, high speed, low
EMI.
The LP125WH2 is intended to support applications where thin thickness, low power are critical factors and
graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LP125WH2 characteristics provide an excellent flat display for office automation products such as Notebook
PC.
EDID 1
BLOCK
COG(Chip On Glass)
CN
1
POWER
User connector
TFT-LCD Panel
BLOCK (1366 x 768)
LVDS & 768
Timing 1 1366
40
Control Source Driver Circuit
Pin
Block
PWM & VBL LED Backlight Ass'y
Control & Data Power EDID signal & Power
General Features
Active Screen Size 12.5 inches diagonal
Outline Dimension 290.5(H) 180.9(V) 3.7(D,Max.) [mm]
Pixel Pitch 0.201mm 0.201 mm
Pixel Format 1366 horiz. By 768 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
Luminance, White 300 cd/m2(Typ.5 point)
Power Consumption Total 4.78 W(Typ.) Logic :0.83 W (Typ.@ Mosaic), B/L : 3.95W (Typ.@ VLED 12V ))
Weight 290g (Max.)
Display Operating Mode Transmissive mode, normally Black
Surface Treatment Anti Glare treatment of the front polarizer
RoHS Compliance Yes
BFR / PVC / As Free Yes for all
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LP125WH2
Liquid Crystal Display
Product Specification
2. Absolute Maximum Ratings
The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.
Table 1. ABSOLUTE MAXIMUM RATINGS
Values
Parameter Symbol Units Notes
Min Max
Power Input Voltage VCC -0.3 4.0 Vdc at 25 r 5qC
Operating Temperature TOP 0 50 qC 1
Storage Temperature HST -20 60 qC 1
Operating Ambient Humidity HOP 10 90 %RH 1
Storage Humidity HST 10 90 %RH 1
Note : 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39qC Max, and no condensation of water.
90% 80%
60 60%
Wet Bulb 50
Humidity[(%)RH]
Temperature [ ] Storage
40 40%
30 Operation
20
20%
10
0
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [ ]
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LP125WH2
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LP125WH2 requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input which powers the LED BL.
Table 2. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min Typ Max
LOGIC :
Power Supply Input Voltage VCC 3.0 3.3 3.6 V 1
Power Supply Input Current Mosaic ICC - 250 300 mA 2
Power Consumption PCC - 0.83 1.0 W 2
Power Supply Inrush Current ICC_P - 1500 mA 3
LVDS Impedance ZLVDS 90 100 110 4
BACKLIGHT : ( with LED Driver)
LED Power Input Voltage VLED 7.0 12.0 21.0 V 5
LED Power Input Current ILED - 21 22.5 mA 6
LED Power Consumption PLED - 3.95 4.2 W 6
LED Power Inrush Current ILED_P - 2000 mA 7
PWM Duty Ratio 1 - 100 % 8
PWM Jitter - 0 - 0.2 % 9
PWM Impedance ZPWM 20 40 60 k
PWM Frequency FPWM - 210 - Hz 10
PWM High Level Voltage VPWM_H 2.2 - 5.3 V
PWM Low Level Voltage VPWM_L 0 - 0.3 V
LED_EN Impedance ZPWM 20 40 60 k
LED_EN High Voltage VLED_EN_H 2.2 - 5.3 V
LED_EN Low Voltage VLED_EN_L 0 - 0.3 V
Life Time 12,000 - - Hrs 11
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LP125WH2
Liquid Crystal Display
Product Specification
Note)
1. The measuring position is the connector of LCM and the test conditions are under 25 , fv = 60Hz,
Black pattern.
2. The specified Icc current and power consumption are under
the Vcc = 3.3V , 25 , fv = 60Hz condition and Mosaic pattern.
3. The below figures are the measuring Vcc condition and the Vcc control block LGD used.
The Vcc condition is same as the minimum of T1 at Power on sequence.
3.3V
Rising time
Vcc 90%
0V 10%
0.5ms
4. This impedance value is needed for proper display and measured form LVDS Tx to the mating connector.
5. The measuring position is the connector of LCM and the test conditions are under 25 .
6. The current and power consumption with LED Driver are under the Vled = 12.0V , 25 , Dimming of
Max luminance and White pattern with the normal frame frequency operated(60Hz).
7. The below figures are the measuring Vled condition 12.0V
and the Vled control block LGD used. Rising time 90%
VLED control block is same with Vcc control block. VLED
0V 10%
0.5ms
8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
9. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent
to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for
more consistent brightness control at any specific level desired.
10. The life time is determined as the time at which brightness of LCD is 50% compare to that of minimum
value specified in table 7. under general user condition
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LP125WH2
Liquid Crystal Display
Product Specification
3-2. Interface Connections
This LCD employs two interface connections, a 40 pin connector used for the module electronics interface and
the other connector used for the integral backlight system.
Pin Symbol Description Notes
1 NC No Connection [Interface Chip]
2 VCC LCD Logic and driver power (3.3V Typ.) 1. LCD :
3 VCC LCD Logic and driver power (3.3V Typ.) SiW, SW0632 (LCD Controller)
4 V EEDID DDC Power (3.3V) Including LVDS Receiver.
5 NC No Connection 2. System :
6 Clk EEDID DDC Clock * Pin to Pin compatible with LVDS
7 DATA EEDID DDC Data
[Connector]
8 ORX0- Negative LVDS differential data input
LSMtron GT05Q-40S-H10
9 ORX0+ Positive LVDS differential data input
10 GND LCM Ground
[Mating Connector]
11 ORX1- Negative LVDS differential data input
20345-#40E-## series or equivalent
12 ORX1+ Positive LVDS differential data input
13 GND LCM Ground [Connector pin arrangement]
14 ORX2- Negative LVDS differential data input
15 ORX2+ Positive LVDS differential data input
16 GND LCM Ground
17 ORXC- Negative LVDS differential clock input
18 ORXC+ Positive LVDS differential clock input
19 GND LCM Ground
[LCD Module Rear View]
20 NC No Connection
21 NC No Connection
22 GND LCM Ground
23 NC No Connection
24 NC No Connection
25 GND LCM Ground
26 NC No Connection
27 NC No Connection
28 GND LCM Ground
29 NC No Connection
30 NC No Connection
31 GND LCM Ground (LED Backlight Ground)
32 GND LCM Ground (LED Backlight Ground)
33 GND LCM Ground (LED Backlight Ground)
34 NC No Connection
35 PWM System PWM Signal input for dimming
36 LED_EN LED Backlight On/Off
37 NC No Connection
38 VLED LED Backlight Power (7V-21V)
39 VLED LED Backlight Power (7V-21V)
40 VLED LED Backlight Power (7V-21V)
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LP125WH2
Liquid Crystal Display
Product Specification
3-3. LVDS Signal Timing Specifications
3-3-1. DC Specification
Symb
Description Min Max Unit Notes
ol
LVDS Differential Voltage |VID| 100 600 mV -
LVDS Common mode Voltage VCM 0.6 1.8 V -
LVDS Input Voltage Range VIN 0.3 2.1 V -
3-3-2. AC Specification
Description Symbol Min Max Unit Notes
85MHz > Fclk
tSKEW - 400 + 400 ps
65MHz
LVDS Clock to Data Skew Margin
65MHz > Fclk
tSKEW - 600 + 600 ps
25MHz
LVDS Clock to Clock Skew Margin (Even
tSKEW_EO - 1/7 + 1/7 Tclk -
to Odd)
Maximum deviation
FDEV - 3 % -
of input clock frequency during SSC
Maximum modulation frequency
FMOD - 200 KHz -
of input clock during SSC
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LP125WH2
Liquid Crystal Display
Product Specification
< Clock skew margin between channel >
Freq.
Fmax
Fcenter
Fmin
Time
< Spread Spectrum >
3-3-3. Data Format
- LVDS 1 Port
RCLK+
RA+/- R3 R2 R1 R0 G0 R5 R4 R3 R2 R1 R0 G0 R5 R4
RB+/- G4 G3 G2 G1 B1 B0 G5 G4 G3 G2 G1 B1 B0 G5
RC+/- B5 B4 B3 B2 DE VSYNC HSYNC B5 B4 B3 B2 DE VSYNC HSYNC
RD+/- G7 G6 R7 R6 X B7 B6 G7 G6 R7 R6 X B7 B6
Previous (N-1)th Cycle Current (Nth ) Cycle Next (N+1)th Cycle
< LVDS Data Format >
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LP125WH2
Liquid Crystal Display
Product Specification
3-4. Signal Timing Specifications
This is the signal timing required at the input of the User connector. All of the interface signal timing should be
satisfied with the following specifications and specifications of LVDS Tx/Rx for its proper operation.
Table 5. TIMING TABLE
ITEM Symbol Min Typ Max Unit Note
DCLK Frequency fCLK - 74.6 - MHz
Period Thp 1490 1578 1884
Hsync Width tWH 34 34 70 tCLK
Width-Active tWHA 1366 1366 1366
Period tVP 779 790 801
Vsync
Width tWV 2 5 8 tHP
Width-Active tWVA 768 768 768
Horizontal back porch tHBP 56 130 438
tCLK
Data Horizontal front porch tHFP 34 48 48
Enable Vertical back porch tVBP 7 15 20
tHP
Vertical front porch tVFP 2 2 5
Appendix) All reliabilities are specified for timing specification based on refresh rate of 60 Hz.
Even though actual performance in 50Hz and 40Hz for low power is displayed normally,
remark and inform to user that display quality in 40 Hz and 50 Hz is out of guarantee range.
Condition : VCC =3.3V
3-5. Signal Timing Waveforms
High: 0.7VCC
Data Enable, Hsync, Vsync
Low: 0.3VCC
tCLK
DCLK 0.5 Vcc
tHP
Hsync t
WH
tHBP tWHA tHFP
Data Enable
tVP
tWV
Vsync tVFP
tVBP tWVA
Data Enable
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LP125WH2
Liquid Crystal Display
Product Specification
3-6. Color Input Data Reference
The brightness of each primary color (red,green and blue) is based on the 6-bit gray scale data input for the
color ; the higher the binary input, the brighter the color. The table below provides a reference for color
versus data input.
Table 7. COLOR DATA REFERENCE
Input Color Data
RED GREEN BLUE
Color
MSB LSB MSB LSB MSB LSB
R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
Green 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
Basic Blue 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
Color Cyan 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1
Magenta 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0
White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (01) 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
RED ... ... ... ...
RED (62) 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (63) 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (01) 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
GREEN ... ... ... ...
GREEN (62) 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0
GREEN (63) 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
BLUE (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
BLUE (01) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
BLUE ... ... ... ...
BLUE (62) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0
BLUE (63) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
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LP125WH2
Liquid Crystal Display
Product Specification
3-7. Power Sequence
90% 90%
Power Supply Input
VCC
0V 10% 10%
T3 T7 T4
T1 T2 Valid Data
Interface Signal, Vi
LVDS
0V
T5 3.0V 3.0V T6
LED on/off control Signal
0V (Off)
LED_EN
T9 T10
Dimming control signal Valid Data
Of LED BL 0V (Low)
PWM
T8 T11
90% 90%
LED input Voltage
VLED 0V 10% T12
Table 6. POWER SEQUENCE TABLE
Logic Value LED Value
Units Units
Parameter Min. Typ. Max. Parameter Min. Typ. Max.
T1 0.5 - 10 ms T8 0 - - ms
T2 0 - 50 ms T9 0 - - ms
T3 0 - - ms T10 0 - - ms
T4 150 - - ms T11 0 - - ms
T5 200 - - ms T12 0.5 - - ms
T6 0 - - ms
T7 0 - 10 ms
Note)
1. Do not insert the mating cable when system turn on.
2. Valid Data have to meet "3-3. LVDS Signal Timing Specifications"
3. LVDS, LED_EN and PWM need to be on pull-down condition on invalid status.
4. LGD recommend the rising sequence of VLED after the Vcc and valid status of LVDS turn on.
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LP125WH2
Liquid Crystal Display
Product Specification
4. Optical Specification
Optical characteristics are determined after the unit has been `ON' and stable for approximately 30 minutes in
a dark environment at 25qC. The values specified are at an approximate distance 50cm from the LCD surface
at a viewing angle of ) and 4 equal to 0q.
FIG. 1 presents additional information concerning the measurement equipment and method.
FIG. 1 Optical Characteristic Measurement Equipment and Method
LCD Module Pritchard 880 or
Optical Stage(x,y)
equivalent
50cm
Table 8. OPTICAL CHARACTERISTICS
Ta=25qC, VCC=3.3V, fV=60Hz, fCLK= 74.6 MHz
Values
Parameter Symbol Units Notes
Min Typ Max
Contrast Ratio CR 500 - - 1
Surface Luminance, white LWH 250 300 - cd/m2 2
G WHITE_5P 70 - - %
Luminance Variation 3
G WHITE_13P 60 70 - %
Response Time TrR+ TrD - 35 50 ms 4
Color Coordinates
RED RX 0.570 0.600 0.630
RY 0.325 0.355 0.385
GREEN GX 0.304 0.334 0.364
GY 0.529 0.559 0.589
BLUE BX 0.119 0.149 0.179
BY 0.084 0.114 0.144
WHITE WX 0.283 0.313 0.343
WY 0.299 0.329 0.359
Viewing Angle 5
x axis, right()=0q) 4r 80 - - degree
x axis, left ()=180q) 4l 80 - - degree
y axis, up ()=90q) 4u 80 - - degree
y axis, down ()=270q) 4d 80 - - degree
Gray Scale 2.2 6
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LP125WH2
Liquid Crystal Display
Product Specification
Note)
1. Contrast Ratio(CR) is defined mathematically as
Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
2. Surface luminance is the average of 5 point across the LCD surface 50cm from the surface with
all pixels displaying white. For more information see FIG 1.
LWH = Average(L1,L2, ... L5)
3. The variation in surface luminance , The panel total variation (G WHITE) is determined by measuring LN
at each test position 1 through 13 and then defined as followed numerical formula.
For more information see FIG 2.
Maximum(L1,L2, ... L13)
G WHITE =
Minimum(L1,L2, ... L13)
4. Response time is the time required for the display to transition from white to black (rise time, TrR) and
from black to white(Decay Time, TrD). For additional information see FIG 3.
5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are determined
for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the
LCD surface. For more information see FIG 4.
6. Gray scale specification * fV = 60Hz
Gray Level Luminance [%] (Typ)
L0 0.11
L7 0.82
L15 4.04
L23 10.00
L31 18.60
L39 32.10
L47 49.30
L55 73.3
L63 100.00
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LP125WH2
Liquid Crystal Display
Product Specification
FIG. 2 Luminance
H
10mm A
6 7 8 10mm
2 3
B H,V : ACTIVE AREA
V A : H/4 mm
9 1 10
B : V/4 mm
POINTS: 13 POINTS
4 5 13
11 12
Active Area
FIG. 3 Response Time
The response time is defined as the following figure and shall be measured by switching the input signal
for "black" and "white".
TrR TrD
%
100
90
Optical
Response
10
0 white white
black
FIG. 4 Viewing angle
Normal
Eye Y
I = 90 q , Up
I = 180 q ,
Left T
I
I = 0q ,
Right
I = 270 q ,
Down
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LP125WH2
Liquid Crystal Display
Product Specification
5. Mechanical Characteristics
The contents provide general mechanical characteristics for the model LP125WH2. In addition the figures
in the next page are detailed mechanical drawing of the LCD.
Horizontal 290.5 r 0.5 mm
Outline Dimension Vertical 180.9 r 0.5 mm
Thickness 3.7mm (max)
Horizontal 280.30 r 0.5 mm
Bezel Area
Vertical 159.52 r 0.5 mm
Horizontal 275.59 mm
Active Display Area
Vertical 154.94 mm
Weight 290.0g (Max.)
Surface Treatment Anti Glare treatment of the front polarizer
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LP125WH2
Liquid Crystal Display
Product Specification
Note) Unit:[mm], General tolerance: r 0.5mm
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LP125WH2
Liquid Crystal Display
Product Specification
Note) Unit:[mm], General tolerance: r 0.5mm
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LP125WH2
Liquid Crystal Display
Product Specification
6. Reliability
Environment test condition
No. Test Item Conditions
1 High temperature storage test Ta= 60qC, 240h
2 Low temperature storage test Ta= -20qC, 240h
3 High temperature operation test Ta= 50qC, 50%RH, 240h
4 Low temperature operation test Ta= 0qC, 240h
5 Vibration test (non-operating) Sine wave, 10 ~ 500 ~ 10Hz, 1.5G, 0.37oct/min
3 axis, 1hour/axis
6 Shock test (non-operating) Half sine wave, 180G, 2ms
one shock of each six faces(I.e. run 180G 6ms
for all six faces)
7 Altitude operating 0 ~ 10,000 feet (3,048m) 24Hr
storage / shipment 0 ~ 40,000 feet (12,192m) 24Hr
{ Result Evaluation Criteria }
There should be no change which might affect the practical display function when the display quality
test is conducted under normal operating condition.
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LP125WH2
Liquid Crystal Display
Product Specification
7. International Standards
7-1. Safety
a) UL 60950-1, Second Edition, Underwriters Laboratories Inc.
Information Technology Equipment - Safety - Part 1 : General Requirements.
b) CAN/CSA C22.2 No.60950-1-07, Second Edition, Canadian Standards Association.
Information Technology Equipment - Safety - Part 1 : General Requirements.
c) EN 60950-1:2006 + A11:2009, European Committee for Electrotechnical Standardization (CENELEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
d) IEC 60950-1:2005, Second Edition, The International Electrotechnical Commission (IEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
7-2. EMC
a) ANSI C63.4 "American National Standard for Methods of Measurement of Radio-Noise
Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz."
American National Standards Institute (ANSI), 2003.
b) CISPR 22 "Information technology equipment