Avalue Technology OFT-21W04 User manual

Part No. E2017T214A1R
OFT-21W04
21.5" Open Frame Tablet
Quick Reference Guide
2nd Ed –30 June 2022
Copyright Notice
Copyright 2022 Avalue Technology Inc., ALL RIGHTS RESERVED.

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Federal Communication Commission Interference Statement
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE AND
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT
MAY CAUSE UNDESIRED OPERATION.
Note: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction, may cause
harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Notice:
(1) A Unshielded-type power cord is required in order to meet FCC emission limits and also to prevent
interference to the nearby radio and television reception. It is essential that only the supplied
power cord by used.
(2) Use only shielded cables to connect I/O devices to this equipment.
(3) Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

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FCC RF Radiation Exposure Statement
This Wireless LAN radio device has been evaluated under FCC Bulletin OET 65 and found compliant
to the requirements as set forth in CFR 47 Sections 2.1091, 2.1093, and 15.247 (b) (4) addressing RF
Exposure from radio frequency devices. The radiated output power of this Wireless LAN device is far
below the FCC radio frequency exposure limits. Nevertheless, this device shall be used in such a
manner that the potential for human contact during normal operation is minimized. When nearby
persons has to be kept to ensure RF exposure compliance, in order to comply with RF exposure limits
established in the ANSI C95.1 standards, the distance between the antennas and the user should not
be less than 20 cm.

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WARNING
“CAUTION – Use suitable mounting apparatus to avoid risk of injury.”
“CAUTION – This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures”
“CAUTION –Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries
according to the instructions.”
“CAUTION - Use a power cord that matches the voltage of the power outlet, which has been approved
and complies with the safety standard of your particular country.”
“WARNING – To avoid risk of electric shock, this equipment must only be connected to a supply
mains with protective earth.”

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Content
1. Getting Started............................................................................................................6
1.1 Safety Precautions ................................................................................................6
1.2 Packing List...........................................................................................................6
1.3 System Specifications ...........................................................................................7
1.4 System Overview.................................................................................................10
1.4.1 Bottom View............................................................................................................................... 10
1.5 System Dimensions.............................................................................................11
1.5.1 Front and Rear side ................................................................................................................... 11
1.5.2 Installing Extend Brackets.......................................................................................................... 12
1.5.3 Front and Rear side (With Extend Bracket)............................................................................... 13
2. Hardware Configuration...........................................................................................14
2.2 Motherboard Overviews ...........................................................................................15
2.3 Motherboard Connector list......................................................................................16
2.4 Motherboard Connectors settings ............................................................................17
2.4.1 DC Power-in connector (JDCIN2)............................................................................................... 17
2.4.2 Touch Key Button (JTB1)............................................................................................................ 17
2.4.3 Speaker connector (JSPK1)........................................................................................................ 18
2.4.4 A-MIC connector (JAMIC1)......................................................................................................... 18
2.4.5 General purpose I/O connector (JDIO1) ..................................................................................... 19
2.4.6 Sensor Board connector (JSENSE)............................................................................................ 19
2.4.7 RS-232 connector (JRS232)....................................................................................................... 20
2.4.8 RS-232 & RS-485 connector (JRS485) ...................................................................................... 20
2.4.9 USB Camera & DMIC connector (JCAM1) ................................................................................. 21
2.4.10 RTC battery connector (JRTC) ................................................................................................. 21

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1. Getting Started
1.1 Safety Precautions
Warning!
Always completely disconnect the power cord from your
chassis whenever you work with the hardware. Do not
make connections while the power is on. Sensitive
electronic components can be damaged by sudden power
surges. Only experienced electronics personnel should
open the PC chassis.
Caution!
Always ground yourself to remove any static charge before
touching the CPU card. Modern electronic devices are very
sensitive to static electric charges. As a safety precaution,
use a grounding wrist strap at all times. Place all electronic
components in a static-dissipative surface or static-shielded
bag when they are not in the chassis.
1.2 Packing List
1 x OFT-21W04
1 x power cord, AC/DC adapter 12V/5A 90 Screw Type (Option)

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1.3 System Specifications
Board Specification
Mother Board
ACP-APL
CPU
Intel Celeron J3455 1.5GHz
CPU Cooler (Type)
Heatsink
Memory
4GB DDR3L SO-DIMM 1866
Power Supply
DC in
Adapter
60W / 12V
Microphone
1x3P_ pitch 2mm AMIC interface
Speaker
1x4P_ pitch 2mm Speaker interface
Camera
2x5P_ pitch 2mm Camera / DMIC
Wireless LAN
1 x 802.11 a/b/g/n/ac Wireless LAN
Bluetooth
BT 5.0
Operating System
2019 Win 10
Expansion Card
SD slot
Storage
Other Storage
Device
32GB eMMC
SSD (60G) M.2 B-Key (3042) Apacer-A32.255GGB.00104
Micro SD slot
Panel
LCD Panel
21.5” Innolux M215HJJ-L30
Touch Screen
21.5” HH
Touch Controller
EETI 80H84
Resolution
1920 x 1080
Luminance
250 cd/m²(typ.)
External I/O
DC in Power jack
JDCIN1: Power Jack_90D
Pwr-in 12V~24V
HDMI Port
JHDMI1: HDMI Port_90D
USB Port
JUSB1: USB Type A Host (3.0)_90D
JUSB2: USB Type A Host (3.0)_90D
Lan Port
JLAN1: 10/100/1000 Lan port_90D
Audio Port
JHP1: Headphone Jack_90D
Power button
Power button_90D
Internal I/O
Micro USB (Client)
JUUSB1: Micro USB_90D

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For programming OTG
USB Camera &
DMIC
JCAM1: 5x2P_2mm_90D
USB for Camera & DMIC
Touch
J15TP1: USB for touch screen
M.2 Socket
JNGFF2: M.2 E-Key x 1(2230)_90D for 802.11 a/b/g/n/ac Wireless LAN and
Bluetooth 5.0
JNGFF3: M.2 B-Key x 1(3042)_90D for SSD or WWAN (Option)
Touch Key Button
JTB1: 6x2P_2mm_90D
Touch button control (power/vol/brightness…)
DC-IN(wafer)
JPWR2: 2x2P_2mm_90D
Pwr-in 12V~24V
LVDS
J19LCD: 1x30P 90D
Analog MIC
JAMIC1: 1x3P_2mm_90D
Speaker
JSPK1: 1x4P_2mm_90D
L+/L-, R+/R-
Sensor
JSENSE: 5x2P_2mm_90D
RS232
JRS232: 1x5P_2mm_90D
Uart Rs232(Tx/Rx/Rts/Cts/GND)
RS232 & RS485
JRS485: 5x2P_2mm_90D
Uart Rs232(Tx/Rx/Rts/Cts/GND)
Uart Rs485
GPIO
JGPIO1: 10x2P_1mm_90D
RTC Battery
JRTC: 2P_1.25mm_90D
SIM Card socket
JSIM1: Micro SIM Card socket
for LTE module
Expansion Slots
JSD1: Micro SD slot_90D
Mechanical
Power Type
12V~24V wide voltage DC input
Power Connector
Type
DC jack
Dimension
515x322x61.6 mm
Weight
3.8 kg
Color
Metallic
Fanless
Yes
OS Support
2019 Win 10
Reliability
EMI Test
CE
FCC class A
Safety
2014/35/EU EN 62368-1: 2014+A11: 2017 (Second Edition)

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Low Voltage Directive
Random Vibration
Operation
1. PSD: 0.00454G²/Hz, 1.5 Grms
2. Operation mode
3. Test Frequency : 5-500Hz
4. Test Axis : X,Y and Z axis
5. 30 minutes per each axis
6. IEC 60068-2-64 Test:Fh
7. Storage : CF or SSD
Sine Vibration test
(Non-operation)
1 Test Acceleration : 2G
2 Test frequency : 5~500 Hz
3 Sweep：1 Oct/ per one minute. (logarithmic)
4 Test Axis : X,Y and Z axis
5 Test time :30 min. each axis
6 System condition : Non-Operating mode
7. Reference IEC 60068-2-6 Testing procedures
Package vibration
test
1. PSD: 0.026G²/Hz, 2.16 Grms
2. Non-operation mode
3. Test Frequency: 5-500Hz
4. Test Axis: X,Y and Z axis
5. 30 min. per each axis
6. IEC 60068-2-64 Test:Fh
Shock Test
1. Wave form：Half Sine wave
2. Acceleration Rate：10g for operation mode
3. Duration Time：11ms
4. No. of Shock：Z axis 300 times
5. Test Axis: Z axis
6. Operation mode
7. Reference IEC 60068-2-29 Testing procedures Test Eb : Bump Test
Package drop test
1 One corner , three edges, six faces
2 ISTA 2A, IEC-60068-2-32 Test:Ed
Operating
Temperature
0°C ~ 40°C
Operating
Humidity
40°C @ 95% Relative Humidity, Non-condensing
Storage
Temperature
-20°C ~ 60°C
Note: Specifications are subject to change without notice.

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1.4 System Overview
1.4.1 Bottom View
Connectors
Label
Function
Note
HP
Audio line-out connector
HDMI
HDMI connector
USB
2 x USB 3.0 connector
LAN
RJ-45 Ethernet
Reset
Reset button
DCIN
DC power-in connector

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1.5 System Dimensions
1.5.1 Front and Rear side
(Unit: mm)

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1.5.2 Installing Extend Brackets
Step1. Locate brackets on both sides, matching the holes on the monitor.
Step2. Insert and fasten 24 screws on each side of the monitor to secure Mounting brackets.
Note: Brackets sold separately.

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1.5.3 Front and Rear side (With Extend Bracket)
(Unit: mm)

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2.Hardware
Configuration
For advanced information, please refer to:
1- Motherboard included in this manual.
Note: If you need more information, please visit our website:
http://www.avalue.com.tw

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2.2 Motherboard Overviews

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2.3 Motherboard Connector list
Connectors
Label
Function
Note
JHP1
Audio line-out connector
JHDMI1
HDMI connector
JUSB1
USB 3.0 connector
JUSB2
USB 3.0 connector
JDCIN1
DC IN Jack
JDCIN2
DC Power-in connector
2 x 2 wafer, pitch 2.00 mm
J10TP1
10" Touch connector
J15TP1
15/21" Touch connector
J10LCD
10" Panel connector
J15LCD
15" Panel connector
JTB1
Touch Key Button
6 x 2 wafer, pitch 2.00 mm
JLAN1
RJ-45 Ethernet connector
JDIMM1
DDR3 connector
JAMIC1
A-MIC connector
3 x 1 wafer, pitch 2.00 mm
JDIO1
General purpose I/O connector
10 x 2 wafer, pitch 1.00 mm
JNGFF2
NGFF KEY E WIFI connector
JNGFF3
NGFF KEY B WWAN connector
JSENSE
Sensor Board connector
5 x 2 wafer, pitch 2.00 mm
JUUSB1
Micro USB connector
JRS232
RS-232 connector
5 x 1 wafer, pitch 2.00 mm
JRS485
RS-232 & RS-485 connector
5 x 2 wafer, pitch 2.00 mm
JSD1
Micro SD card slot
JSPK1
Speaker connector
4 x 1 wafer, pitch 2.00 mm
J19BL1
Backlight connector
5 x 1 wafer, pitch 2.00 mm
JCAM1
USB Camera & DMIC connector
2 x 5 wafer, pitch 2.00 mm
JRTC
RTC battery connector
2 x 1 wafer, pitch 1.25 mm
J19CD
21" Panel connector
JSIM1
Micro SIM Card socket

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2.4 Motherboard Connectors settings
2.4.1 DC Power-in connector (JDCIN2)
Signal
PIN
PIN
Signal
GND
2
1
+12V_24ADPIN
GND
4
3
+12V_24ADPIN
2.4.2 Touch Key Button (JTB1)
Signal
PIN
PIN
Signal
+PWR_JTB1
1
2
GND
RSTBTN
3
4
BU1_TV_3V
VOL_UP_3V
5
6
VOL_DOWN_3V
PWRBTN_3V
7
8
BU_BR+_3V
BU_BR-_3V
9
10
BU7_3V
LED_GREEN_R
11
12
LED_ORANGE_R

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2.4.3 Speaker connector (JSPK1)
Signal
PIN
SPK_L+
1
SPK_L-
2
SPK_R+
3
SPK_R-
4
2.4.4 A-MIC connector (JAMIC1)
Signal
PIN
MIC_JD#
3
AMIC_IN
2
GND
1

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2.4.5 General purpose I/O connector (JDIO1)
Signal
PIN
PIN
Signal
DIO_GP20
2
1
DIO_GP10
DIO_GP21
4
3
DIO_GP11
DIO_GP22
6
5
DIO_GP12
DIO_GP23
8
7
DIO_GP13
DIO_GP24
10
9
DIO_GP14
DIO_GP25
12
11
DIO_GP15
DIO_GP26
14
13
DIO_GP16
DIO_GP27
16
15
DIO_GP17
I2C_2_LV_SCL
18
17
I2C_2_LV_SDA
GND
20
19
+5V
2.4.6 Sensor Board connector (JSENSE)
Signal
PIN
PIN
Signal
GND
1
2
GND
SENSE0_IRQ_R
3
4
SENSE2_IRQ_R
I2C_1_SDA_3.3V
5
6
I2C_6_SDA_3.3V
I2C_1_SCL_3.3V
7
8
I2C_6_SCL_3.3V
+3V
9
10
+3V

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2.4.7 RS-232 connector (JRS232)
Signal
PIN
GND
1
DEBUG_CTS#_3
2
DEBUG_RTS#_3
3
DEBUG_RXD_3
4
DEBUG_TXD_3
5
2.4.8 RS-232 & RS-485 connector (JRS485)
Signal
PIN
PIN
Signal
+PWR_RS485
9
10
DEBUG_TXD_2
NC
7
8
DEBUG_RXD_2
485_422TX1-
5
6
DEBUG_RTS#_2
485_422TX1+
3
4
DEBUG_CTS#_2
GND
1
2
GND