Arestech MERA-2000 Series User manual

User Manual
MERA-2000 Series
Modular Embedded Computers
with Intel® Celeron® J1900 Processor

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Record of Revisions
Version
Issue Date
Descriptions
Made By
1.0
2021/09/27
First Release
Jerry

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Copyright
The documentation and the software included with this product are copyrighted by Arestech
Cooperation Co., Ltd. All rights are reserved. No part of this manual may be reproduced, copied,
translated, or transmitted in any form or by any means without the prior written permission of
Arestech Cooperation Co., Ltd. Information provided in this manual is intended to be accurate and
reliable.
Trademark Acknowledgement
Brand and product names are registered trademarks of their respective owners.
Disclaimer
Arestech reserves the right to make changes, without notice, to any product described or contained
in this manual to improve design and/or performance. Applications that are described in this
manual are for illustration purposes only. Arestech makes no representation or guarantee that such
application will be suitable for the specified use without further testing or modification. This
manual might include unintentional typographical or technical errors. Arestech will periodically
correct such erroneous files and incorporate these corrections into the new version of the manual.
Technical Support and Assistance
If there is a problem with your product and you are unable to get a solution from the user’s manual,
please contact the local distributor.
Product Warranty (2 Years)
Arestech warrants to you, the original purchaser, that each of its products will be free from defects
in materials and workmanship for two years from the invoice date. This warranty does not apply to
any products which have been repaired or altered by persons other than repair personnel authorized
by Arestech, or which have been subject to misuse, abuse, accident, or improper installation.
Arestech assumes no liability under the terms of this warranty as a consequence of such events.
When a defect is discovered, please obtain an RMA (return merchandize authorization) from our
website, which allows us to process your return more quickly. The returned product must be properly
packaged in its original packaging to obtain warranty service.

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Safety Instructions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect this equipment from any AC outlet before cleaning. Use a damp cloth. Do not use
liquid or spray detergents for cleaning.
4. For plug-in equipment, the power outlet socket must be located near the equipment and must
be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a reliable surface during installation. Dropping it or letting it fall may
cause damage.
7. The openings on the enclosure are for air convection. Protect the equipment from
overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting the equipment to the
power outlet.
9. Position the power cord so that people cannot step on it. Do not place anything over the
power cord.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the power source to avoid
damage by transient overvoltage.
12. Never pour any liquid into an opening. This may cause fire or electrical shock.
13. For safety reasons, the equipment should be opened only by qualified service personnel. If one
of the following situations arises, get the equipment checked by service personnel:
◼The power cord or plug is damaged.
◼Liquid has penetrated into the equipment.
◼The equipment has been exposed to moisture.
◼The equipment does not work well, or you cannot get it to work according to the user
manual.
◼The equipment has been dropped and damaged.
◼The equipment has obvious signs of breakage.
14. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT WHERE THE STORAGE TEMPERATURE
MAY GO BELOW -20°C (-4°F) OR ABOVE 55°C (131°F). THIS COULD DAMAGE THE
EQUIPMENT. THE EQUIPMENT SHOULD BE IN A CONTROLLED ENVIRONMENT.
15. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY
WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER, DISCARD
USED BATTERIES ACCORDING TO THE MANUFACTURER'S INSTRUCTIONS.

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Safety Precaution - Static Electricity
Follow these simple precautions to protect yourself from harm and the products from damage:
1. To avoid electrical shock, always disconnect the power from your PC chassis before you work on
it. Don't touch any components on the CPU card or other cards while the PC is on.
2. Disconnect power before making any configuration changes. The sudden rush of power as you
connect a jumper or install a card may damage sensitive electronic components.

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Contents
Chapter 1. Product Introductions ..................................................................................8
1.1 Overview..................................................................................................................8
1.2 Hardware Specifications..........................................................................................9
1.2.1 MERA-2000-2L Specification ........................................................................9
1.2.2 MERA-2001(S)-2L Series Specification........................................................10
1.3 Panel I/O ................................................................................................................11
1.3.1 Front Panel..................................................................................................11
1.3.2 Rear Panel...................................................................................................13
1.3.3 Right Panel..................................................................................................15
1.4 Mechanical Dimensions.........................................................................................16
1.4.1 MERA-2000-2L............................................................................................16
1.4.1 MERA-2001(S)-2L........................................................................................17
Chapter 2. Switches and Connectors ...........................................................................18
2.1 Switches and Connectors ......................................................................................18
2.1.1 Front View ..................................................................................................18
2.1.2 Rear View....................................................................................................18
2.1.3 Right View...................................................................................................19
2.2 Switches, LEDs and Connectors Definitions ..........................................................20
2.3 Switch Definitions..................................................................................................22
2.4 Connector Definitions............................................................................................25
Chapter 3. System Setup .............................................................................................29
3.1 Installing A SODIMM..............................................................................................29
3.2 Replacing A CMOS Battery ....................................................................................33
3.3 Installing A mini-PCIe / mSATA Module ................................................................37
3.4 Installing An Antenna ............................................................................................40
3.5 Installing A SIM Card or CFast Card .......................................................................42
3.6 Installing The Front Removable SATA HDD Bay ....................................................43
3.7 Installing The Right Removable SATA HDD Bay (MERA-2001(S)-2L Only).............44
3.8 Installing The Wall Mount Brackets.......................................................................45

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3.9 Installing The DIN-Rail Holder................................................................................46
Chapter 4. BIOS Setup.................................................................................................47
4.1 BIOS Introduction ..................................................................................................47
4.2 Main Setup.............................................................................................................48
4.3 Advanced Setup.....................................................................................................49
4.3.1 Trusted Computing (Optional)....................................................................49
4.3.2 ACPI Settings...............................................................................................50
4.3.3 Super IO Configuration...............................................................................51
4.3.4 Hardware Monitor......................................................................................55
4.3.5 Serial Port Console Redirection..................................................................56
4.3.6 CPU Configuration ......................................................................................57
4.3.7 PPM Configuration .....................................................................................58
4.3.8 SATA Configuration.....................................................................................59
4.3.9 OS Selection................................................................................................60
4.3.10 Network Stack Configuration ...................................................................61
4.3.11 CSM Configuration....................................................................................62
4.3.12 USB Configuration ....................................................................................64
4.4 Chipset...................................................................................................................65
4.4.1 North Bridge ...............................................................................................66
4.4.2 South Bridge ...............................................................................................68
4.5 Security ..................................................................................................................70
4.6 Boot 71
4.7 Save & Exit .............................................................................................................72
Main Menu.......................................................................

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Chapter 1. Product Introductions
1.1 Overview
MERA-2000 series is a compact fanless system with Intel® Celeron® J1900 quad-core processor. The
system integrates rich I/O and supports vehicle power ignition function. It has a wide-range DC
power input from 9V to 48V, wide operating temperature range of -40°C to +70°C, and an industrial-
grade protection (RVP, OVP, OCP, ESD, surge, etc.). This design standard ensures that MERA-2000
series system can operate in harsh and demanding environments.

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1.2 Hardware Specifications
1.2.1 MERA-2000-2L Specification

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1.2.2 MERA-2001(S)-2L Series Specification

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1.3 Panel I/O
1.3.1 Front Panel
◼Power On/Off Button
Press to turn on or off the system
◼AT/ATX Mode Select Switch
Used to select AT or ATX power mode
◼Reset Button
Used to reset the system
◼Remote Power On/Off Terminal Block
Used to plug in a remote power on/off
terminal block
◼PC/Car Mode Select Switch
Used to select PC or Car mode
◼Delay Time Select Switch
Used to select car mode system to turn
off delay time
◼USB 2.0 Port
Used to connect a USB 2.0/1.1 device
◼Removable HDD Port
Removable 2.5" SATA HDD area
◼Power LED
Indicates the power status of the system
◼HDD LED
Indicates the status of the hard drive
◼IGN LED
Indicates the status of the active ignition
◼GPIO LED
Indicates the status of the GPIO defined
by customer
◼Ethernet LEDs
Indicates the status of the active LAN
◼Antenna Hole
Used to connect an antenna for optional
mini-PCIe Wi-Fi module
MERA-2000-2L

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MERA-2001(S)-2L

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1.3.2 Rear Panel
◼Line Out
Used to connect a speaker
◼Mic In
Used to connect a microphone
◼LAN Port
Used to connect the system to a local
area network
◼DVI-I Port
Used to connect a DVI monitor or an
optional split cable for dual-display mode
◼Display Port
Used to connect a DisplayPort monitor
◼DC In
Used to plug in a DC power input with
terminal block
◼Earthing Screw Hole
Used to connect the ground wire
◼Antenna Hole
Used to connect an antenna for optional
mini-PCIe Wi-Fi module
◼COM Port
COM3 ~ COM6 support RS232/422/485
serial device (MERA-2001(S)-2L only)
◼USB 2.0 Port
Used to connect a USB 2.0/1.1 device
MERA-2000-2L
MERA-2001-2L

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MERA-2001S-2L

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1.3.3 Right Panel
◼COM Port
COM1 ~ COM2 support RS232/422/485
serial device
◼Digital I/O Terminal Block
Supports 4 digital inputs and 4 digital
outputs
◼USB 3.0 Port
Used to connect a USB 3.0 device
◼Clear CMOS
Used to clear CMOS
◼CFast Socket
Used to insert a CFast card
◼SIM Holder
Used to insert a SIM card
MERA-2000-2L
MERA-2001(S)-2L

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1.4 Mechanical Dimensions
1.4.1 MERA-2000-2L

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1.4.1 MERA-2001(S)-2L

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Chapter 2. Switches and Connectors
2.1 Switches and Connectors
2.1.1 Front View
2.1.2 Rear View

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2.1.3 Right View

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2.2 Switches, LEDs and Connectors Definitions
◼List of Switches and LEDs
Location
Definition
PWR_SW1
Power Button
AT_ATX1
AT / ATX Power Mode Switch
RESET1
Reset Button
CLR_CMOS1
Clear BIOS Switch
PC_CAR1
PC / Car Mode Switch
DELAY_TIME1
Car mode system turn off delay time
PWR_LED1
Power LED Status
HDD_LED1
HDD Access LED Status
IGN_LED1
Power Ignition LED Status
GPIO_LED1
GPIO LED Status
LAN1_LINK1, LAN2_LINK1
LAN Link LED
LAN1_ACT1, LAN2_ACT1
LAN Active LED