Dell C7520QT User Guide
Dell C7520QT
User’s Guide
Model: C7520QT
Regulatory model: C7520QTt
NOTE: A NOTE indicates important information that helps you make better use of your
display.
CAUTION: A CAUTION indicates potential damage to hardware or loss of data if
instructions are not followed.
WARNING: A WARNING indicates a potential for property damage, personal injury,
or death.
Copyright © 2018-2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other
trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their
respective owners.
2019 – 07
Rev. A01
Contents
About Your Display ..................................5
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Identifying Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Display Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Plug-and-Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
LCD Display Quality and Pixel Policy. . . . . . . . . . . . . . . . . . . . . . .24
Setting Up the Display ..............................25
Connecting Your Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operating the Display...............................34
Turning on the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Touch OSD Launcher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Using the Touch Control Launcher. . . . . . . . . . . . . . . . . . . . . . . .35
Using the OSD lock function. . . . . . . . . . . . . . . . . . . . . . . . . . .36
Using the On-Screen Display (OSD) Menu . . . . . . . . . . . . . . . . . . . 37
Dell Web Management for Displays . . . . . . . . . . . . . . . . . . . . . . . 51
Troubleshooting ...................................56
Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Contents | 3
Built-in Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Product Specific Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Touchscreen Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Universal Serial Bus (USB) Specific Problems . . . . . . . . . . . . . . . . . 62
Ethernet Problems. . . . . . . . . . . . . . . . .63
Appendix.........................................64
Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
FCC Notices (U.S. only) and Other Regulatory Information . . . . . . . . . . 64
Contacting Dell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Setting Up Your Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
4 | Contents
About Your Display
Package Contents
Your display ships with the components shown below. Make sure that you have received all the
components and contact Dell if something is missing.
NOTE: Some items may be optional and may not ship with your display. Somefeatures
may not be available in certain countries.
Display
Remote Control & Batteries
(AAA x 2)
Stylus x 2
About Your Display | 5
(Remote control & Stylus holder)
x 3
Wire Saddle x 3
Power cable (varies by country)
Power cable for connecting
Optiplex system to display
(see Optiplex (Optional))
USB 3.0 upstream cable (enables
the USB ports on the display)
DP cable (DP to DP)
6 | About Your Display
VGA cable
HDMI cable
• Flatfrog Whiteboard
Software download
instruction
• Safety, Environmental and
Regulatory Information
• Quick Setup Guide
Product Features
The Dell C7520QT display has an active matrix, thin film transistor (TFT), liquid crystal display
(LCD), and LED backlight. The display features include:
• 189.273 cm (74.52-inch) active area display (Measured diagonally) 3840 x 2160 (16:9
aspect ratio) resolution, plus full-screen support for lower resolutions.
• Video Electronics Standards Association (VESA™) 400 x 400 mm mounting holes.
• Plug and play capability if supported by your system.
• On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.
• Security lock slot.
• Supports Asset Management Capability.
• Arsenic-Free glass and Mercury-Free for Panel only.
• 0.3 W standby power when in the sleep mode.
• Easily setup with Dell Optiplex Mirco PC (Mirco Form Factor).
• Up to 20 points and 4 pens InGlassTM Touch technology.
• Optimize eye comfort with a flicker-free screen.
• The possible long-term effects of blue light emission from the display may cause damage
to the eyes, including eye fatigue or digital eye strain. ComfortView feature is designed to
reduce the amount of blue light emitted from the display to optimize eye comfort.
About Your Display | 7
Identifying Parts and Controls
Front view
1
25 3
Label Description
1 Screen drop down touch key
2
3 Power on/off button
4 Power LED indicator
5 OSD Launcher touch key (For more information, see Operating the Display)
IR Lens
1
4
8 | About Your Display
Back View
1
1
2
3
4
C7520QT
DELL
DELL C7520QT
Flat Panel Monitor / 液晶显示器
Flat Panel Monitor / Monitor Plano Panel / Moniteur à écran plat / 液晶顯示器
型号 : C7520QT
Model No. /
N° de Modelo
/ Numéro de modèle /型號:
C7520QTt
Input Rating / 输入电源 : 100-240V ~ 50/60Hz 5.5A
Input Rating / Entrada / Daya Tegangan / Tension d’entrée: 100-240V ~ 50/60Hz 5.5A
Output Rating / 输出电源 : 100-240V ~ 50/60Hz 2A
輸入電源:交流電壓 100-240伏特, 5.5 安培, 50/60赫茲
Made in China / 制造地:中国
Output Rating / Valores nominales de salida / Nilai Arus Outpu / Puissance de sortie: 100-240V ~ 50/60H z 2A
Manufactured date / 制造日期:
輸出電源:交流電壓 100-240伏特, 2 安培, 50/60赫茲
Made in China / Fabricado en China / Fabriqué en Chine / Сделано в Китае / 製造地:中國
E
t
Consumo de energía en operación: XX.XX Wh
Удельная мощность рабочего режима - 0,00X Вт/см2
Потребляемая мощность изделием в режиме ожидания -0,XX Вт
Потребляемая мощность изделием в выключенном режиме - 0,XX Вт
IS 13252 (Part 1)/
警語:使用過度恐傷害視力
CAN ICES-3 (B)/NMB-3(B)
IEC 60950-1
Apparatet må tilkoples jordet stikkontakt.
Apparaten skall anslutas till jordat uttag.
Apparatets stikprop skal tilsluttes en stikkontakt med jord,
1
som giver forbindelse til stikproppens jord.
Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
신청인：Wistron Corporation (For Korea)
Wistron InfoComm (Zhongshan) Corporation Linhai Branch
제조자: Wistron InfoComm (Zhongshan) Corporation Linhai Branch
R-41071650
A/S 연락처:080-854-0066
www.bis.gov.in
제조국: 중국
XXXXXXXX-XXXXX
ID XXXXXXXXXX
XXXXXX-XX
X-REM-WT1-C7520QTt
ID XXXXXXXXXX
Address for EU Only:
Raheen Business Park
Limerick Ireland
www.dell.com
R43004
デル株式会社
RoHS
И005-19
1
8 9765
Label Description Use
1 Handle x 4 Use to move the display.
2 VESA mounting holes (400 x 400 mm) To mount the display.
3 Security lock slot Secures Optiplex with security cable lock
(sold separately).
4
Optiplex holder
Use to hold a Micro Form Factor Optiplex
PC.
5 Serial number, Service Tag label, and
Website
6 Barcode, serial number, and Service Tag
Refer to this label if you need to contact
Dell for technical support.
label
7 Regulatory label List of approved regulatory labels.
8 AC to optiplex (optional) AC power to optiplex power adapter.
9 AC power connector To connect the display power cable.
About Your Display | 9
Side View
1a
1b
1c
6
2
3
7
8
9
4
5
Label Description Use
1a HDMI 1 connector
Connect your computer with HDMI cable.1b HDMI 2 connector
1c HDMI 3 connector
2 DP connector Connect your computer with DP cable.
3 VGA connector Connect your computer with VGA cable.
4 Audio line-in port Analog audio (two channel) input.
5 Audio line-out port Connect to external audio peripherals.
Only supports 2-channel audio.
NOTE: The audio line-out port does not support
headphones.
6 USB 3.0 upstream ports
(3)
Connect the USB cable that comes with your display to the
computer. Once this cable is connected, you can use the
USB downstream connectors on the display and the touch
screen function on the display.
10
10 | About Your Display
7 USB 3.0 downstream
ports (3)
8 USB charging port USB 3.0 with 10 W with BC1.2 charging capability at 2A
9 RS232 connector Remote management and control of display via RS232.
10
RJ-45 connector
Connect your USB device.
You can only use this connector after you have connected
the USB cable to the computer and USB upstream
connector on the display.
(max).
Remote Network Management and control of display via
RJ-45.
Input sources and USB pairing
CEC
Input sources USB upstream
HDMI 1 CEC USB 1
HDMI 2 USB 2
HDMI 3
USB 3DP
VGA
Bottom View
Label Description
1, 2
3
Speakers
Power on/off button
2 31
About Your Display | 11
Display Specifications
Screen type Active matrix - TFT LCD
Panel Type In-plane switching Technology
Aspect ratio 16:9
Viewable image dimensions
Diagonal 189.273 cm (74.52 inches)
Active Area
Horizontal 1649.664 mm (64.95 inches)
Vertical 927.936 mm (36.53 inches)
Area
Pixel pitch 0.429 mm x 0.429 mm
Pixel per inch (PPI) 59
Viewing angle
Horizontal 178° (typical)
Vertical 178° (typical)
Panel brightness 350 cd/m² (typical)
Contrast ratio 1200 to 1 (typical)
Display screen coating 9H, Anti-Smudge, Anti-Glare
Response Time 8 ms typical (G to G), 12 ms max. (G to G )
Color depth 1.07 Billon colors
Color gamut NTSC ( 72%)
Connectivity •1 x DP 1.2
Border width (edge of display to
active area)
1530323.4 mm2 (2372 inches2)
•1 x VGA
•3 x HDMI 2.0
•4 x USB 3.0 downstream port
1 x USB BC1.2 charging capability at 2A (max)
(
•3 x USB 3.0 upstream port
•1 x Analog 2.0 audio line out (3.5 mm jack)
•1 x Analog 2.0 audio line in (3.5 mm jack)
•1 x RJ-45
•1 x RS232
42.75 mm (Top)
42.69 mm (Left/Right)
46.75 mm (Bottom)
)
12 | About Your Display
Touch
Type InGlass Touch Technology
TM
Input Method Bare finger and stylus
Interface USB HID Compliant
Touch point
Up to 20 points touch
Up to 4 pens
NOTE: Touch Pen and Eraser differentiation ready (functionality subject to application).
Support OS
OS Version Touch Pen Eraser
Windows 7 Pro and Ultimate 20 4 1
8, 8.1 20 4 1
10 20 4 1
Chorme OS Linux kernel version 3.15 (3.10) or later
Android 4.4 (KitKat) with Linux kernel 3.15 (3.10) or later
Other Linux
Linux kernel 3.15 or later 20 4 1
1
20 4 (0) 1 (0)
1
20 4 (0) 1 (0)
based OS
macOS 10.10, 10.11 1 (mouse2) No
1
Functionality of Linux kernel has been verified on Ubuntu 14.04 and Debian 8. Functionality of
Chrome OS and Android with Linux kernel 3.15 needs comfirmation.
2
Mouse emulation in landscape mode. Full multi-touch requires additional drivers on the host
system.
Touch sensor input accuracy
Touch sensor input accuracy
Center area
Edge area
1
Average accuracy at the specified input area.
2
95-percentile accuracy of specified input area.
3
>20 mm from active touch area edge
4
>20 mm from active touch area edge
1
Ty p
3
4
1.0 1.5 mm
1.2 2.0 mm
Max
2
Unit
Note that touch sensor input accuracy is defined relative to the active touch area as defined in
the reference drawing (listed in 8.1). The overall system accuracy, of touch co-ordinates relative
to display co-ordinates, is directly affected by integration assembly tolerances.
About Your Display | 13
Resolution Specifications
(kHz)
(Hz)
Vertical)
Horizontal scan range 30 kHz to 140 kHz (DP/HDMI)
Vertical scan range 24 Hz to 75 Hz (DP/HDMI)
Maximum preset resolution
Video display capabilities
(DP & HDMI playback)
NOTE:VGA input resolution supported is 1920 x 1080 only.
3840 x 2160 at 60 Hz
480p, 576p, 720p, 1080i, 1080p, 2160p
Preset Display Modes
Display Mode Horizontal
Frequency
720 x 400 31.5 70.0 28.3 -/+
640 x 480 31.5 60.0 25.2 - /-
640 x 480 37.5 75.0 31.5 - /-
800 x 600 37.9 60.0 40.0 +/+
800 x 600 46.9 75.0 49.5 +/+
1024 x 768 48.4 60.0 65.0 -/-
1024 x 768 60.0 75.0 78.8 +/+
1152 x 864 67.5 75.0 108.0 +/+
1280 x 800 49.3 60.0 71.0 +/+
1280 x 1024 64.0 60.0 108.0 +/+
1280 x 1024 80.0 75.0 135.0 + /+
1600 x 1200 75.0 60.0 162.0 - /+
1920 x 1080 67.5 60.0 193.5 +/+
2048 x 1152 7 1.6 60.0 1 97.0 + /-
2560 x 1440 88.8 60.0 241.5 + /-
3840 x 2160 65.68 30.0 262.75 +/+
3840 x 2160 133.313 60.0 533.25 +/+
Vertical
Frequency
Pixel Clock
(MHz)
Sync Polarity
(Horizontal/
14 | About Your Display
Electrical Specifications
Video input signals •Digital video signal for each dierential line
Per dierential line at 100 ohm impedance
•DP/HDMI/VGA signal input support
Input voltage/ frequency/current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 5.5 A (maximum)
Output voltage/ frequency/current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 2 A (maximum)
Inrush current 120 V: 42 A (Max.) at 0 °C (cold start)
240 V: 80 A (Max.) at 0 °C (cold start)
Physical Characteristics
Connector type •DP connector
•VGA connector
•HDMI connector
•Audio line-out
•Audio line-in
•USB 3.0 connector
•USB charging port- supplying power of up to 5 V (max
2A) for connected devices
•RJ-45 connector
•RS232 connector
Signal cable type (in-box) DP, 3 m cable
HDMI, 3 m cable
VGA, 3 m cable
USB 3.0, 3 m cable
Optiplex power cable, 1 m
Dimensions
Height 1017.44 mm (40.06 inches)
Width 1735.02 mm (68.31 inches)
Depth 79.1 mm (3.11 inches)
Weight
Weight with packaging 76 kg (167.55 lb)
Weight without packaging 64 kg (141.10 lb)
About Your Display | 15
Environmental Characteristics
Compliant Standards
ENERGY STAR certified Monitor yes
EPEAT EPEAT registered where applicable. EPEAT registration
varies by country. See www.epeat.net for registration
status by country.
RoHS Compliant yes
Temperature
Operating
Non-operating –20 °C to 60 °C (–4 °F to 140 °F)
Humidity
Operating 10% to 80% (non-condensing)
Non-operating 5% to 90% (non-condensing)
Altitude
Operating 5,000 m (16,404 ft) (maximum)
Non-operating 12,192 m (40,000 ft) (maximum)
Thermal dissipation 921.89 BTU/hour (maximum)
0 °C to 40 °C (32 °F to 104 °F)
546.30 BTU/hour (typical)
Power Management Modes
If you have VESA’s DPM-compliant video card or software installed in your PC, the display can
automatically reduce its power consumption when not in use. This is referred to as power save
mode*. If the computer detects input from the keyboard, mouse, or other input devices, the
display automatically resumes functioning. The following table shows the power consumption
and signaling of this automatic power saving feature.
VESA
Modes
Normal
operation
Active-off
mode
Switch off - - - Off Less than 0.3 W
Power Consumption P
Total Energy Consumption (TEC)
Horizontal
Sync
Active Active Active White 270 W (maximum)**
Inactive Inactive Off White
on
Vertical
Sync
Video Power Indicator Power Consumption
160 W (typical)
Less than 0.3 W
(Glowing)
114.4 W
Not Applicable
16 | About Your Display
The OSD operates only in the normal operation mode. If you press any button in the active-off
mode, the following message is displayed:
Dell 75 Monitor
No HDMI 1 signal from your device.
Press any key on the keyboard or move the mouse or wake it up.
If there is no display, press the monitor button again to select the correct
input source.
C7520QT
*Zero power consumption in OFF mode can only be achieved by disconnecting
the AC main cable from the display.
**Maximum power consumption with maximum luminance, and USB active.
This document is informational only and reflects laboratory performance. Your product may
perform differently, depending on the software, components and peripherals you ordered and
shall have no obligation to update such information. Accordingly, the customer should not
rely upon this information in making decisions about electrical tolerances or otherwise. No
warranty as to accuracy or completeness is expressed or implied.
Activate the computer and the display to gain access to the OSD.
NOTE: This monitor is ENERGY STAR certified.
This product qualifies for ENERGY STAR in the factory default settings which can be
restored by “Factory Reset” function in the OSD menu. Changing the factory default
settings or enabling other features may increase power consumption that could exceed the
ENERGY STAR specified limit.
NOTE:
Pon: Power consumption of On Mode as defined in Energy Star 8.0 version.
TEC: Total energy consumption in kWh as defined in Energy Star 8.0 version.
About Your Display | 17
Pin Assignments
DP connector
Pin number 20-pin side of theconnected signal cable
1 ML3(n)
2 GND
3 ML3(p)
4 ML2(n)
5 GND
6 ML2(p)
7 ML1(u)
8 GND
9 ML1(p)
10 ML0(n)
11 GND
12 ML0(p)
13 CONFIG1/(GND)
14 CONFIG2/(GND)
15 AUX CH (p)
16 DP_Cable Detect
17 AUX CH (n)
18 Hot Plug Detect
19 GND
20 +3.3V DP_PWR
18 | About Your Display
VGA connector
Pin number 15-pin side of theconnected signal cable
1 Video-Red
2 Video-Green
3 Video-Blue
4 NC
5 Self-test
6 GND-R
7 GND-G
8 GND-B
9 Computer 5 V / 3.3 V
10 GND-sync
11 GND
12 DDC data
13 H-sync
14 V-sync
15 DDC clock
About Your Display | 19
HDMI connector
Pin number 19-pin side of theconnected signal cable
1 TMDS DATA 2+
2 TMDS DATA 2 SHIELD
3 TMDS DATA 2-
4 TMDS DATA 1+
5 TMDS DATA 1 SHIELD
6 TMDS DATA 1-
7 TMDS DATA 0+
8 TMDS DATA 0 SHIELD
9 TMDS DATA 0-
10 TMDS CLOCK+
11 TMDS CLOCK SHIELD
12 TMDS CLOCK-
13 CEC
14 Reserved (N.C. on device)
15 DDC CLOCK (SCL)
16 DDC DATA (SDA)
17 DDC/CEC Ground
18 +5 V POWER
19 HOT PLUG DETECT
20 | About Your Display
RS232 connector
Pin number 9-pin side of theconnected signal cable
1 -
2 RX
3 TX
4 -
5 GND
6 -
7 Not Used
8 Not Used
9 -
About Your Display | 21
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