VersaLogic Copperhead (VL-EBX-41) Reference guide

Reference

Manual

REV. 7/13/2017

Copperhead

(VL-EBX-41)

Intel® 3rd Generation Core™

Quad or Dual Core SBC with

Ethernet, HD Graphics, ACPI

4.0, SATA, RAID, USB, eUSB,

mSATA, SUMIT, HD Audio,

Serial, Analog + Digital I/O, and

SPX

EBX-41 Reference Manual ii

WWW.VERSALOGIC.COM

12100 SW Tualatin Road

Tualatin, OR 97062-7341

(503) 747-2261

Fax (971) 224-4708

Notice:

Although every effort has been made to ensure this document is error-free, VersaLogic makes no

representations or warranties with respect to this product and specifically disclaims any implied warranties

of merchantability or fitness for any particular purpose.

VersaLogic reserves the right to revise this product and associated documentation at any time without

obligation to notify anyone of such changes.

EBX-41 Reference Manual iii

Product Release Notes

Rev 1.03 – Updated Web links

Rev 1.02 – Updated miniDisplayport cable information in Table 1

Rev 1.01 – Updated nominal battery voltage content

Updated CBR-5013 content in Table 2

Rev 1.0x – Commercial Release.

Support Page

The Copperhead support page, at

https://versalogic.com/support/product_support.asp?ProductID=231, contains additional information

and resources for this product including:

 Reference Manual (PDF format)

 Operating system information and software drivers

 Data sheets and manufacturers’ links for chips used in this product

 Photograph of the circuit board

 BIOS information and upgrades

The VersaTech KnowledgeBase is an invaluable resource for resolving technical issues with your

VersaLogic product.

VersaTech KnowledgeBase

EBX-41 Reference Manual iv

Table of Contents

Introduction ..................................................................................................................... 1

Description .......................................................................................................................... 1

Technical Specifications ..................................................................................................... 2

Copperhead Block Diagram ................................................................................................ 3

Thermal Considerations ...................................................................................................... 4

CPU Die Temperature ........................................................................................... 4

Model Differences ................................................................................................. 4

Warnings ............................................................................................................................. 5

Electrostatic Discharge .......................................................................................... 5

Lithium Battery ...................................................................................................... 5

Handling Care ........................................................................................................ 5

Earth Ground Requirement .................................................................................... 5

Technical Support ............................................................................................................... 6

Repair Service ........................................................................................................ 6

Configuration and Setup .................................................................................................. 7

Initial Configuration ........................................................................................................... 7

Basic Setup ......................................................................................................................... 7

CMOS Setup ....................................................................................................................... 9

Operating System Installation ............................................................................................. 9

Physical Details .............................................................................................................. 10

Dimensions and Mounting ................................................................................................ 10

Hardware Assembly ............................................................................................. 14

Standoff Locations ............................................................................................... 14

External Connectors ......................................................................................................... 15

VL-EBX-41 Connector Locations – Top ............................................................ 15

VL-EBX-41 Connector Locations – Bottom ....................................................... 16

VL-EBX-41 Connector Functions and Interface Cables ..................................... 17

VL-CBR-5013 Connector Locations ................................................................... 18

VL-CBR-5013 Connector Functions ................................................................... 19

VL-CBR-4004 Connector Locations ................................................................... 19

Jumper Blocks .................................................................................................................. 21

Jumpers As-Shipped Configuration ..................................................................... 21

Jumper Summary ................................................................................................. 22

System Features ............................................................................................................. 23

Power Supply .................................................................................................................... 23

Power Connector ................................................................................................. 23

Power Requirements ............................................................................................ 23

Power Delivery Considerations ........................................................................... 23

Lithium Battery .................................................................................................... 24

CPU ................................................................................................................................... 24

Table of Contents

EBX-41 Reference Manual v

System RAM ..................................................................................................................... 24

Compatible Memory Modules ............................................................................. 24

Clearing Non-volatile RAM (NVRAM) .......................................................................... 25

CMOS RAM ..................................................................................................................... 25

Clearing CMOS RAM and RTC .......................................................................... 25

Real-time Clock ................................................................................................................ 25

Setting the Clock.................................................................................................. 25

Expansion Bus .................................................................................................................. 26

PCIe/104 .............................................................................................................. 26

SUMIT ................................................................................................................. 26

Interfaces and Connectors .............................................................................................. 28

Video Interfaces ................................................................................................................ 28

VGA Connector ................................................................................................... 28

LVDS Flat Panel Display .................................................................................... 28

mini DisplayPort .................................................................................................. 29

Console Redirection ............................................................................................ 30

SATA Ports ....................................................................................................................... 31

mSATA ............................................................................................................................. 31

eUSB ................................................................................................................................. 33

Ethernet ............................................................................................................................. 33

Ethernet Connectors ............................................................................................ 33

Status LED ........................................................................................................... 34

USB ................................................................................................................................... 35

Serial Ports ........................................................................................................................ 35

COM Port Configuration ..................................................................................... 35

Serial Port Connectors ......................................................................................... 36

Analog Input ..................................................................................................................... 37

External Connections ........................................................................................... 37

Analog Input Using the SPI Interface .................................................................. 38

Analog Output .................................................................................................................. 39

Digital I/O ......................................................................................................................... 41

Digital I/O Port Configuration Using the SPI Interface ...................................... 42

Audio ................................................................................................................................ 46

Counter/Timers ................................................................................................................. 47

PCIe Mini Card / mSATA ................................................................................................ 47

PCIe Mini Card Wireless Status LEDs ................................................................ 49

User I/O Connector ........................................................................................................... 50

LEDs ................................................................................................................................. 50

Programmable LED ............................................................................................. 50

Power LED .......................................................................................................... 51

Pushbutton Reset .............................................................................................................. 51

Power Button .................................................................................................................... 51

Supported Power States ....................................................................................... 52

Speaker ............................................................................................................................. 52

SPX Expansion Bus .......................................................................................................... 53

VersaLogic SPX Expansion Modules ................................................................. 53

SPI Registers ........................................................................................................ 54

Table of Contents

EBX-41 Reference Manual vi

System Maps .................................................................................................................. 58

On-board I/O Devices ....................................................................................................... 58

Special Registers ............................................................................................................ 59

PLED and Product Code Register .................................................................................... 59

PLD Revision and Type Register ..................................................................................... 60

BIOS and Jumper Status Register ..................................................................................... 61

Appendix A – References ................................................................................................ 62

Appendix B – Custom Programming .............................................................................. 63

PLD Interrupts .................................................................................................................. 63

Interrupt Control Register .................................................................................... 63

Interrupt Status Register ...................................................................................... 64

8254 Timer Control Register ............................................................................................ 65

Miscellaneous Control Register........................................................................................ 67

A/D and D/A Control/Status Register .............................................................................. 68

EBX-41 Reference Manual 1

Introduction

Description

The Copperhead (VL-EBX-41) is a feature-packed single board computer designed for OEM

control projects requiring fast processing, industrial I/O, flexible memory options and designed-

in reliability and longevity (product lifespan). Its features include:

 Intel® 3rd Generation Core™ CPU:

 Core™ i7 Quad-Core (2.3 GHz) or

 Core™ i7 Dual-Core (1.7 GHz) or

 Core™ i3 Dual-Core (1.6 GHz) or

 Celeron® Dual-Core (1.4 GHz)

 Up to 16 GB DDR3 socketed

memory, two SO-DIMMs

 Intel QM77 Platform Controller Hub

 Two Intel 82574IT-based Ethernet

interfaces, autodetect 10BaseT /

100BaseTX / 1000BaseT

 Intel HD 4000 graphics core with

GPU Turbo Boost; DirectX 11,

MPEG-2, H.264, and OGL 3.1

compliant; supports three

independent displays

 Two DisplayPort interfaces, one

VGA and one LVDS interface

 Four RS-232/422 serial ports

 Two SATA 6 Gb/s ports and two

SATA 3 Gb/s ports

 RAID 0/1/5/10 support



Ten USB 2.0 ports and two USB 3.0 ports

 One mSATA only socket

 One PCIe Mini Card/mSATA socket

 One eUSB bootable flash interface

 Industrial I/O

 Sixteen 12-bit analog inputs

 Eight 12-bit analog outputs

 Thirty-two digital I/O lines

 Trusted Platform Module (option) for on-

board security

 SPX interface supports up to four external

SPI devices either of user design or any of

the SPX™ series of expansion boards,

with clock frequencies from 1-8 MHz

 Intel High Definition Audio (HDA)

compatible. Stereo line in and line out.

 PCIe/104 Type 1 or SUMIT expansion

 EBX standard 5.75” x 8.00” footprint

 Field-upgradeable BIOS with OEM

enhancements

 Customization available

The Copperhead is compatible with a variety of popular operating systems including Windows 7

(32- and 64-bit), XP (32-bit), WES (32- and 64-bit), Linux (32- and 64-bit), and VxWorks.

The Copperhead features high-reliability design and construction, including voltage sensing reset

circuits and self-resetting fuses on the +5V and +3.3V supplies to the user I/O connectors.

Copperhead boards are subjected to 100% functional testing and are backed by a limited two-

year warranty. Careful parts sourcing and US-based technical support ensure the highest possible

quality, reliability, service and product longevity for this exceptional SBC.

The Copperhead is equipped with a multifunction utility cable (breakout board) that provides

standard I/O interfaces, including four USB ports, four serial ports, pushbutton reset,

programmable LED, audio, and speaker. Additional I/O expansion is available through the

stackable SUMIT and ISA connectors, PCIe Mini Card socket, and SPX expansion interface.

1

Introduction

EBX-41 Reference Manual 2

Technical Specifications

Board Size:

EBX standard: 5.75” x 8” (146 mm x 203 mm)

Storage Temperature:

-40°C to 85°C

Operating Temperature:

Standard temp. models: 0°C to +60°C

Industrial temp. models: -40°C to +85°C

Power Requirements: (at +25°C and +12V running

Windows 7 with 4 GB RAM, LVDS display, SATA, GbE,

COM, and USB keyboard/mouse.)

VL-EBXs-41SAK, EAF, VL-EBXe-41EHF: 7.6W

idle, 20.7W typical, 33.7W max.

VL-EBXe-41SJF, EJP: 16.2W idle, 37.2W

typical, 58.1W max.

VL-EBXe-41ELF, SLK: 8.8W idle, 14.4W typical,

20.0W max.

VL-EBXe-41SMK, EMF: 9.8W idle, 13.3W

typical, 16.9W max.

+3.3V might be required by some expansion

modules; +5V is needed when current above 4A

is required for expansion modules

System Reset and Hardware Monitors:

All voltage rails monitored. Watchdog timer with

programmable timeout. Push-button sleep,

reset, and power.

DRAM: Two SO-DIMM sockets, up to 16 GB DDR3 with

up to 1600 MT/s

Video Interface:

Intel HD Graphics 4000 core

Analog output for VGA

Up to 2048x1536 at 75 MHz

LVDS output for TFT FPDs

18 bits RGB plus 3 bits timing control or

24 bits RGB plus 4 bits timing control

Two mini DisplayPort interfaces, one VGA, one

LVDS

SATA Interface:

Two SATA 6 Gb/s ports

Two SATA 3 Gb/s ports

Flash Interface:

One 2 mm eUSB bootable device interface

One mSATA socket

One PCIe Mini Card / mSATA socket

Ethernet Interface:

Two Intel 82574IT based 10BaseT / 100BaseTX

/ 1000BaseT Ethernet Controllers

Analog Input:

16-channel, 12-bit, single-ended, 100 Ksps,

channel independent input range: bipolar ±5,

±10, or unipolar 0 to +5V or 0 to +10V

Analog Output:

8-channel, 12-bit, single-ended, 100 Ksps, 0 to

4.096V

Serial Interface: (COM Ports)

Four RS-232/422 ports, 16C550 compatible, 921

Kbps max., 4-wire RS-232

USB:

Ten USB 2.0 host ports

Two USB 3.0 host ports

Audio: Intel HD Audio, IDT 92HD75 HD audio CODEC

Stereo Line In and Stereo Line Out

SPX: Supports four external SPI chips of user design

or any SPX series expansion board

BIOS:

American Megatrends (AMI) Aptio UEFI

Technology with OEM enhancements.

Field upgradeable with BIOS update utility

Bus Speed:

CPU: Intel i7 Dual-Core: 1.7 GHz, i7 Quad-Core:

2.3 GHz, i3 Dual-Core: 1.6 GHz, or Celeron

Dual-Core: 1.4 GHz

DDR3: 1333 or 1600 MT/s

USB 2.0: 480 Mbps

USB 3.0: 5 Gbps

LPC: 33.33 MHz

PCIe/104: 100 MHz

SPX: 8 MHz max.

Bus Compatibility:

PCIe/104

SUMIT

Weight: (no memory installed)

VL-EBXs-41SAK – 0.861 lbs (0.390 kg)

VL-EBXs-41EAF – 1.238 lbs (0.561 kg)

VL-EBXe-41SJF – 1.268 lbs (0.575 kg)

Other models TBD

SUMIT Resources

Form Factor: EBX

SUMIT

A

SUMIT

B

PCIe x1

1

2

PCIe x4

–

USB

4

ExpressCard

–

LPC



SPI / uWire

SPI

SMBus/ I2C

SMBus

+12V



+5V



+5Vsb



+3.3V



Specifications are typical at +25°C with +12V supply unless otherwise noted. Specifications are

subject to change without notification.

Introduction

EBX-41 Reference Manual 3

Copperhead Block Diagram

Figure 1. VL-EBX-41 Block Diagram

Introduction

EBX-41 Reference Manual 4

Thermal Considerations

CPU DIE TEMPERATURE

The CPU die temperature is affected by numerous conditions, such as CPU utilization, CPU

speed, ambient air temperature, air flow, thermal effects of adjacent circuit boards, external heat

sources, and many others.

The CPU is protected from over-temperature conditions by several mechanisms, including

Minimum Frequency Mode (MFM), coreclock modulation, and THERMTRIP#.

See the 3rd Generation Intel® Embedded Mobile Processor Datasheet, Vol. 1 for complete

information on CPU thermal considerations.

As a failsafe, if the CPU die temperature climbs above +105°C, the CPU will turn itself off to

prevent damage to the chip. Note that Intel does not warrant their CPUs in the event of this

occurrence.

MODEL DIFFERENCES

VersaLogic offers both commercial and industrial temperature models of the VL-EBX-41. The

basic operating temperature specification for Copperhead models is shown below.

Thermal Solution Temp. Range Airflow

Heat plate 0°C to +60°C Zero airflow

-40°C to +85°C 125 Linear Feet per Minute

(0.5 Linear Meters per Second)

Heat sink (fanless) 0°C to +60°C 125 Linear Feet per Minute

(0.5 Linear Meters per Second)

Fan + heat sink -40°C to +85°C 125 Linear Feet per Minute

(0.5 Linear Meters per Second)

For heat plate only models, the customer-provided thermal solution must keep the heat plate

below 90°C, measured top dead center of the heat plate. For example, for an 85°C ambient

temperature, the thermal solution needs to:

 Dissipate 45W with a 5°C delta between ambient and the heat plate

 Thermal resistance = 0.11°C / W for the 45W unit

See Figure 6 for heat plate dimensions and mounting holes.

Introduction

EBX-41 Reference Manual 5

Warnings

ELECTROSTATIC DISCHARGE

Warning! Electrostatic discharge (ESD) can damage circuit boards, disk drives and other

components. The circuit board must only be handled at an ESD workstation. If an

approved station is not available, some measure of protection can be provided by

wearing a grounded antistatic wrist strap. Keep all plastic away from the board and

do not slide the board over any surface.

After removing the board from its protective wrapper, place the board on a

grounded, static-free surface, component side up. Use an antistatic foam pad if

available.

The board should also be protected inside a closed metallic anti-static envelope

during shipment or storage.

Note The exterior coating on some metallic antistatic bags is sufficiently conductive to

cause excessive battery drain if the bag comes in contact with the bottom-side of

the VL-EBX-41.

LITHIUM BATTERY

Warning! To prevent shorting, premature failure or damage to the lithium battery, do not

place the board on a conductive surface such as metal, black conductive foam or

the outside surface of a metalized ESD protective pouch. The lithium battery may

explode if mistreated. Do not recharge, disassemble or dispose of in fire. Dispose

of used batteries promptly and in an environmentally suitable manner.

HANDLING CARE

Warning! Care must be taken when handling the board not to touch the exposed circuitry

with your fingers. Though it will not damage the circuitry, it is possible that small

amounts of oil or perspiration on the skin could have enough conductivity to cause

the contents of BIOS RAM to become corrupted through careless handling,

resulting in BIOS resetting to factory defaults.

EARTH GROUND REQUIREMENT

Warning! All mounting holes (eight on EBX and EPIC boards, four on PC/104 boards)

should be connected to earth ground (chassis ground). This provides proper

grounding for ESD and EMI purposes. In portable applications, the mounting holes

should be connected to the ground reference of the system power supply.

Introduction

EBX-41 Reference Manual 6

Technical Support

If you are unable to solve a problem after reading this manual, please visit the Copperhead

Product Support web page below. The support page provides links to component datasheets,

device drivers, and BIOS and PLD code updates.

The VersaTech KnowledgeBase contains a wealth of technical information about VersaLogic

products, along with product advisories. Click the link below to see all KnowledgeBase articles

related to the VL-EBX-41.

If you have further questions, contact VersaLogic Technical Support at (503) 747-2261.

VersaLogic support engineers are also available via e-mail at [email protected].

REPAIR SERVICE

If your product requires service, you must obtain a Returned Material Authorization (RMA)

number by calling (503) 747-2261.

Please provide the following information:

 Your name, the name of your company, your phone number, and e-mail address

 The name of a technician or engineer that can be contacted if any questions arise

 Quantity of items being returned

 The model and serial number (barcode) of each item (see Figure 8 for location)

 A detailed description of the problem

 Steps you have taken to resolve or recreate the problem

 The return shipping address

Warranty Repair All parts and labor charges are covered, including return shipping

charges for UPS Ground delivery to United States addresses.

Non-warranty Repair All approved non-warranty repairs are subject to diagnosis and labor

charges, parts charges and return shipping fees. Please specify the

shipping method you prefer and provide a purchase order number for

invoicing the repair.

Note: Please mark the RMA number clearly on the outside of the box before

returning.

Copperhead Support Page

VersaTech KnowledgeBase

EBX-41 Reference Manual 7

Configuration and Setup

Initial Configuration

The following components are recommended for a typical development system.

 VL-EBX-41 computer

 VL-PS-ATX12-300A – ATX power supply

 VGA or LVDS display

 USB keyboard

 USB mouse

 VL-HDS35-xxx – SATA hard drive

 USB CD-ROM drive

 VL-MM9-xxxx – DDR3 SO-DIMM module

The following VersaLogic cables are recommended.

 VL-CBR-1201 – VGA adapter cable, or

 VL-CBR-2010, 2011, or 2012 – LVDS cable

 VL-CBR-0701 – SATA data cable

 VL-CBR-0401 – ATX to SATA power cable

 VL-CBR-0808 – Main power cable

You will also need an operating system installation CD.

Basic Setup

The following steps outline the procedure for setting up a typical development system. The VL-

EBX-41 should be handled at an ESD workstation or while wearing a grounded antistatic wrist

strap.

Before you begin, unpack the VL-EBX-41 and accessories. Verify that you received all the items

you ordered. Inspect the system visually for any damage that may have occurred in shipping.

Contact Support@VersaLogic.com immediately if any items are damaged or missing.

Gather all the peripheral devices you plan to attach to the VL-EBX-41 and their interface and

power cables.

It is recommended that you attach standoffs to the board (see Hardware Assembly) to stabilize

the board and make it easier to work with.

Figure 2 shows a typical start-up configuration.

2

Configuration and Setup

EBX-41 Reference Manual 8

Figure 2. Typical Start-up Configuration

1. Install Memory

 Insert DDR3 DRAM module(s) into SO-DIMM sockets J2 and J33 and latch them into

place.

2. Attach Cables and Peripherals

 Plug the either the VGA adapter cable VL-CBR-1201 into socket J1 or the LVDS

adapter cable VL-CBR-201x into socket J32 (on the bottom of the board). Attach the

adapter cable to the display.

 Plug the USB CD-ROM drive, keyboard, and mouse into on-board USB ports (J12, J13,

J15, or J16).

 Plug the SATA data cable VL-CBR-0701 into a SATA socket (J3, J5, J7, or J9) and

attach the SATA hard drive to the cable.

 Attach the ATX SATA power cable (VL-CBR-0401) to the ATX power supply and to

the SATA hard drive.

OS Installation

CD-ROM

J18

VL-EBX-41

Copperhead

USB Keyboard

and Mouse

ATX

Power Supply

SATA

Hard Drive

CD-ROM

Drive

VL-CBR-1201

(

or connect LVDS to

co

nnector J32 on

bottom side of board

using VL-CBR-201x)

VL-CBR-0702

USB

VL-CBR-0808

VL-CBR-0401

VGA

USB

J1

SATA

VL-PS-ATX12-300A

Configuration and Setup

EBX-41 Reference Manual 9

3. Attach Power

 Plug the power adapter cable VL-CBR-0808 into connector J18.

 Attach the 24-pin motherboard connector of the ATX power supply to the

adapter.

 Attach the 4-pin 12V CPU connector of the ATX power supply to the adapter.

There will be 4 unused housing receptacles on the VL-CBR-0808, and keying

will prevent incorrect insertion.

Warning! Do not use the six-pin (2x3) auxiliary power connector intended for PCI Express

video cards.

4. Review Configuration

 Before you power up the system, double check all the connections. Make sure all cables

are oriented correctly and that adequate power will be supplied to the VL-EBX-41 and

peripheral devices.

5. Power On

 Turn on the ATX power supply and the display. If the system is correctly configured, a

video signal should be present.

6. Select a Boot Drive

 During startup, press the B key to display the boot menu. Insert the OS installation CD in

the CD-ROM drive, and select to boot from the CD-ROM drive.

7. Install Operating System

 Install the operating system according to the instructions provided by the OS

manufacturer. (See Operating System Installation.)

Note If you intend to operate the VL-EBX-41 under Windows XP or Windows XP

Embedded, be sure to use Service Pack 3 (SP3) and all updates for full support of

the latest hardware features.

CMOS Setup

See VersaLogic KnowledgeBase article VT1717 - Copperhead (VL-EBX-41 BIOS Setup

Reference for complete information on CMOS Setup parameters.

Operating System Installation

The standard PC architecture used on the VL-EBX-41 makes the installation and use of most of

the standard x86 processor-based operating systems very simple. The operating systems listed on

the VersaLogic OS Compatibility Chart use the standard installation procedures provided by the

maker of the OS. Special optimized hardware drivers for a particular operating system, or a link

to the drivers, are available at the VL-EBX-41 Product Support web page at

https://versalogic.com/support/product_support.asp?ProductID=231.

EBX-41 Reference Manual 10

Physical Details

Dimensions and Mounting

The VL-EBX-41 complies with all EBX standards which provide for specific mounting hole and

PCIe/104 stack locations as shown in the diagram below.

Figure 3. VL-EBX-41 Dimensions and Mounting Holes

(Not to scale. All dimensions in inches.)

3

-0.20

0.00

–0.20

1.87

0.00

5.80

2.65

5.25

5.35

5.55

7.80

7.60

5.70

2.80

0.125 DIA x8

Use 3

mm or #4

standoffs

Physical Details

EBX-41 Reference Manual 11

Caution The VL-EBX-41 must be supported at all eight mounting points to prevent

excessive flexing when expansion modules are mated and de-mated. Flex damage

caused by excessive force on an improperly mounted circuit board is not covered

under the product warranty.

Figure 4. VL-CBR-5013 Dimensions and Mounting Holes

(Not to scale. All dimensions in inches.)

1.95

1.57

5.50

5.10

1.17

1.24

0.065

Physical Details

EBX-41 Reference Manual 12

Figure 5. VL-CBR-4004 Dimensions and Mounting Holes

(Not to scale. All dimensions in inches.)

J1 J2 J3 J4

J6 J7 J8 J9

J5

+

2.38

2.87

0.25

0.40

1.95

0.70

0.63

0.62

0.06

Physical Details

EBX-41 Reference Manual 13

Figure 6. Heat Plate Dimensions and Mounting Holes

(Not to scale. All dimensions in millimeters.)

3.20

44.48

56.00

89.00

PEM TSOS-M25-600

4X

2.0mm

Drill 2X

M2.5 x 0.45mm

2X

30.00

11.00

8.00

33.00

Physical Details

EBX-41 Reference Manual 14

HARDWARE ASSEMBLY

The VL-EBX-41 mounts on four hardware standoffs using the corner mounting holes (A). These

standoffs are secured to the underside of the circuit board using pan head screws.

Four additional standoffs (B) must be used under the circuit board to prevent excessive flexing

when expansion modules are mated and separated. These are secured with four male-female

standoffs (C), threaded from the top side, which also serve as mounting struts for the expansion

stack.

The entire assembly can sit on a table top or be secured to a base plate. When bolting the unit

down, make sure to secure all eight standoffs (A and B) to the mounting surface to prevent

circuit board flexing.

An extractor tool is available (part number VL-HDW-203) to separate expansion modules from

the stack.

Note Standoffs and screws are available as part number VL-HDW-105 (metric M3

thread) or VL-HDW-106 (English thread).

Note Where possible, all eight mounting standoffs should be connected to earth ground

(chassis ground). This provides proper grounding for ESD and EMI protection.

STANDOFF LOCATIONS

Figure 7. Standoff Locations

A

B

C

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VersaLogic Copperhead (VL-EBX-41) Reference guide

VersaLogic Copperhead (VL-EBX-41) Reference guide

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