Patton electronics ForeFront 6276 User manual

Model 6276
ForeFront Half-Pipe
Chassis Assembly
User Guide
Sales Office:
+1 (301) 975-1000
Technical Support:
+1 (301) 975-1007
E-mail:
URL:
www.patton.com
Document Number:
12001U2-001 Rev. C
Part Number:
07M6276
Revised:
May 12, 2006

Patton Electronics Company, Inc.
7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA
Tel: +1 (301) 975-1000
Fax: +1 (301) 869-9293
Support: +1 (301) 975-1007
Web: www.patton.com
E-mail: [email protected]
Copyright © 2003–2006, Patton Electronics Company. All rights reserved.
The information in this document is subject to change without notice. Patton Elec-
tronics assumes no liability for errors that may appear in this document
Trademark Statement
The terms
ForeFront
and
Half-Pipe
are trademarks of Patton Electronics Company.
CompactPCI
and
PICMG
are registered trademarks of the PCI Industrial Computer
Manufacturers Group. All other trademarks presented in this document are the
property of their respective owners.
Notices
The information contained in this document is not designed or intended for use as
critical components in human life-support systems, equipment used in hazardous
environments, or nuclear control systems. Patton Electronics Company disclaims any
express or implied warranty of fitness for such uses.
The information in this document is subject to change without notice. Patton Elec-
tronics assumes no liability for errors that may appear in this document.
Any software described in this document is furnished under license and may be used or
copied only in accordance with the terms of such license.

3
Summary Table of Contents
1Introduction.................................................................................................................................................. 13
2Chassis specifications .................................................................................................................................... 15
3System architecture ....................................................................................................................................... 25
4Installation checklist ..................................................................................................................................... 35
5Maintenance.................................................................................................................................................. 40
6Contacting Patton for assistance ................................................................................................................... 42
ACompliance information .............................................................................................................................. 45
BGlossary of terms .......................................................................................................................................... 48

4
Contents
Summary Table of Contents ........................................................................................................................... 3
Contents ......................................................................................................................................................... 4
List of Figures ................................................................................................................................................. 7
List of Tables .................................................................................................................................................. 8
About this guide
.....................................................................................................................................................9
Audience................................................................................................................................................................. 9
Structure................................................................................................................................................................. 9
Precautions ........................................................................................................................................................... 10
Safety when working with electricity ...............................................................................................................10
Style conventions used in this document............................................................................................................... 11
Typographical conventions used in this document................................................................................................ 12
General conventions .......................................................................................................................................12
Bibliography ......................................................................................................................................................... 12
1Introduction.................................................................................................................................................. 13
Product features and benefits.................................................................................................................................14
What is CompactPCI?...........................................................................................................................................14
2Chassis specifications .................................................................................................................................... 15
2U CPCI subrack..................................................................................................................................................16
Description of chassis front side.............................................................................................................................17
Description of chassis rear side...............................................................................................................................18
Electromagnetic compatibility (EMC)...................................................................................................................19
Electrostatic discharge (ESD) protection................................................................................................................20
Fan tray assembly ..................................................................................................................................................22
Chassis system specifications..................................................................................................................................23
Power considerations .............................................................................................................................................23
3System architecture ....................................................................................................................................... 25
CompactPCI form factor.......................................................................................................................................26
Board front panels ...........................................................................................................................................27
Transition boards ............................................................................................................................................27
Pin and socket connectors......................................................................................................................................29
J1/P1 & J2/P2 connectors ...............................................................................................................................30
J3/P3 through J5/P5 connector .......................................................................................................................30
Reserved pins ..................................................................................................................................................30
Power pins ......................................................................................................................................................30
Backplane architecture...........................................................................................................................................30
Slot designation ..............................................................................................................................................32
Backplane power distribution ................................................................................................................................32
External power connections ............................................................................................................................33
Front panel keying for power supplies .............................................................................................................33

5
Model 6276 User Guide
Contents
Hot-swap capability...............................................................................................................................................33
4Installation checklist ..................................................................................................................................... 35
2U quick set-up checklist.......................................................................................................................................36
Power cable installation ...................................................................................................................................37
Installing the power cables—AC unit ........................................................................................................37
Installing the power cables—DC unit .......................................................................................................37
Grounding the Model 6276—AC and DC units ......................................................................................38
Changing the VI/O configuration jumper .......................................................................................................38
Optional frame ground/signal ground connect ................................................................................................38
5Maintenance.................................................................................................................................................. 40
Preventive maintenance .........................................................................................................................................41
Clean fan filter ................................................................................................................................................41
Troubleshooting....................................................................................................................................................41
System won’t power up ...................................................................................................................................41
No-load condition generates a false alarm .......................................................................................................41
6Contacting Patton for assistance ................................................................................................................... 42
Introduction..........................................................................................................................................................43
Contact information..............................................................................................................................................43
Patton support headquarters in the USA .........................................................................................................43
Alternate Patton support for Europe, Middle East, and Africa (EMEA) ..........................................................43
Warranty Service and Returned Merchandise Authorizations (RMAs)...................................................................43
Warranty coverage ..........................................................................................................................................43
Out-of-warranty service .............................................................................................................................44
Returns for credit ......................................................................................................................................44
Return for credit policy .............................................................................................................................44
RMA numbers ................................................................................................................................................44
Shipping instructions ................................................................................................................................44
ACompliance information .............................................................................................................................. 45
Radio and TV Interference (FCC Part 15) ............................................................................................................46
EC Declaration of Conformity ..............................................................................................................................46
FCC Part 68 (ACTA) Statement ...........................................................................................................................46
Industry Canada Notice ........................................................................................................................................47
BGlossary of terms .......................................................................................................................................... 48
C...........................................................................................................................................................................49
CFM ...............................................................................................................................................................49
CSA ................................................................................................................................................................49
CT ..................................................................................................................................................................49
D...........................................................................................................................................................................49
Dual Redundant .............................................................................................................................................49
E............................................................................................................................................................................49
ECTF .............................................................................................................................................................49
EIA .................................................................................................................................................................49

6
Model 6276 User Guide
Contents
EMC ...............................................................................................................................................................49
EMI ................................................................................................................................................................49
EN ..................................................................................................................................................................49
Enumeration ...................................................................................................................................................49
ESD ................................................................................................................................................................49
Eurocard .........................................................................................................................................................49
H...........................................................................................................................................................................49
Hot-Swap .......................................................................................................................................................49
HP ..................................................................................................................................................................49
I.............................................................................................................................................................................50
IDE ................................................................................................................................................................50
IEC .................................................................................................................................................................50
IEEE ...............................................................................................................................................................50
IN/C ...............................................................................................................................................................50
ISA ..................................................................................................................................................................50
K...........................................................................................................................................................................50
Keying ............................................................................................................................................................50
N...........................................................................................................................................................................50
N+1 Redundant ..............................................................................................................................................50
NEBS .............................................................................................................................................................50
NP ..................................................................................................................................................................50
P............................................................................................................................................................................50
PCI .................................................................................................................................................................50
PCI SIG ..........................................................................................................................................................50
PICMG ..........................................................................................................................................................50
Platform ..........................................................................................................................................................50
S............................................................................................................................................................................50
SELV ..............................................................................................................................................................50
S-HAZ ............................................................................................................................................................50
Shroud ............................................................................................................................................................51
T...........................................................................................................................................................................51
TDM ..............................................................................................................................................................51
TNV ...............................................................................................................................................................51
U...........................................................................................................................................................................51
U....................................................................................................................................................................51
W..........................................................................................................................................................................51
Warm-Swap ....................................................................................................................................................51

7
List of Figures
1 Model 6276 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2 Model 6276 ForeFront Half-Pipe Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 Front view of chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Rear view of chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 AC and DC rear power entry modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 EMC strip and gasket on chassis and cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Alignment/ESD pin on card handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8 Model 6270-series fan tray assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 Front panel—6U front-entry card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10 Front/rear boards and backplane interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11 J1 through J5 connectors on the 6U card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
12 Rear view of chassis showing the midplane/backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
13 IEC-320 connector and grounding stud locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
14 DC connector, -DC and +DC input view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

8
List of Tables
1 General conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 Fan tray specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3 2U chassis materials specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4 Power input and power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 Description of rear interface panel connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9
About this guide
This manual is a comprehensive hardware reference tool for the Patton Electronics 2U CPCI Redundant
Backplane/Midplane and Chassis line of products.
Audience
This guide is intended for the following users:
•System developers installing and integrating the products into their systems
•Operators
•Installers
•Maintenance technicians
Structure
This guide contains the following chapters and appendices:
•Chapter 1, "Introduction" on page 13—provides an overview of the product, about Patton Electronics,
warranty, and service information.
•Chapter 2, "Chassis specifications" on page 15—provides an overview of the chassis features.
•Chapter 3, "System architecture" on page 25—provides a quick set-up checklist for installing the
Model 6276.
•Chapter 4, "Installation checklist" on page 35—provides an overview of CompactPCI specifications, as well
as a more in-depth description of the product’s features.
•Chapter 5, "Maintenance" on page 40—provides a quick set-up checklist, tips for troubleshooting, war-
ranty information, and where to get help.
•Appendix A, "Compliance information" on page 45—contains compliance information for the
Model 6276.
•Appendix B, "Glossary of terms" on page 48—defines terms and acronyms used in this document.
For best results, read the contents of this guide
before
you install the enclosure.

10
Model 6276 User Guide
About this guide
Precautions
Notes, cautions, and warnings, which have the following meanings, are used throughout this guide to help you
become aware of potential problems.
Warnings
are intended to prevent safety hazards that could result in per-
sonal injury.
Cautions
are intended to prevent situations that could result in property damage or
impaired functioning.
Note
A note presents additional information or interesting sidelights.
Safety when working with electricity
The alert symbol and IMPORTANT heading calls attention to
important information.
The alert symbol and CAUTION heading indicate a potential haz-
ard. Strictly follow the instructions to avoid property damage.
The shock hazard symbol and CAUTION heading indicate a
potential electric shock hazard. Strictly follow the instructions to
avoid property damage caused by electric shock.
This symbol and the CAUTION heading indicates a situation
where damage to equipment can be caused by electrostatic dis-
charge.
The alert symbol and WARNING heading indicate a potential safety hazard.
Strictly follow the warning instructions to avoid personal injury.
The shock hazard symbol and WARNING heading indicate a potential electric
shock hazard. Strictly follow the warning instructions to avoid injury caused
by electric shock.
This device contains no user serviceable parts. The equipment shall be
returned to Patton Electronics for repairs, or repaired by qualified
service personnel.
IMPORTANT
CAUTION
CAUTION
CAUTION
WARNING
WARNING

11
Model 6276 User Guide
About this guide
Style conventions used in this document
Tables contain information of a descriptive nature. For example, pin assignments or signal description.
Cross-references, figure titles, and table titles are hyperlinked. This means that if you have the on-line version of
this document, you can click on the cross-reference and it will “jump” you to that reference within the document.
This feature only works with references to sections/tables/figures within this document. References to other docu-
ments (for example,
PICMG 2.5 R1.0 CompactPCI Computer Telephony Specification
) are not hyperlinked.
The symbols “/” and “#” indicate signals that are active low.
Specific safety-related terms, traceable to certain safety regulatory agency requirements (i.e., IEC950 and har-
monized derivative specifications) are used within this manual. Refer to the referenced document for a defini-
tion of these terms.
Mains Voltage: Do not open the case when the power cord is attached. Dis-
connect the power supply cord before servicing. For systems without a power
switch, line voltages are present within the power supply when the power
cords are connected. The mains outlet that is utilized to power the devise shall
be within 10 feet (3 meters) of the device, shall be easily accessible, and pro-
tected by a circuit breaker.
For AC powered units, ensure that the power cable used with this device
meets all applicable standards for the country in which it is to be installed,
and that it is connected to a wall outlet which has earth ground.
Hazardous network voltages are present in WAN ports regardless of whether
power to the Smart-DTA is ON or OFF. To avoid electric shock, use caution
when near WAN ports. When detaching cables, detach the end away from the
ForeFront device first.
Do not work on the system or connect or disconnect cables during periods of
lightning activity.
In accordance with the requirements of council directive 2002/
96/EC on Waste of Electrical and Electronic Equipment (WEEE),
ensure that at end-of-life you separate this product from other
waste and scrap and deliver to the WEEE collection system in
your country for recycling.

12
Model 6276 User Guide
About this guide
Typographical conventions used in this document
This section describes the typographical conventions and terms used in this guide.
General conventions
The procedures described in this manual use the following text conventions:
Bibliography
The following publications are used in conjunction with this manual.
•ECTF H.110 (CT Bus) Specification (Revision 1.0)
•CompactPCI Hot Swap Specification—PICMG 2.12 (Revision 1.0)
•CompactPCI Specification—PICMG 2.0 (Revision 3.0)
•Keying of CompactPCI Boards and Backplanes Specification—PICMG 2.10 (Revision 1.0)
•UL60950, Safety of Information Technology Equipment, including Electrical Business Equipment
•IEC 61076-4-101 (1995-05), Specification for 2mm Connector System
•IEEE 1101.10, IEEE Standard for Additional Mechanical Specifications for Microcomputers using IEEE
1101.1 Equipment Practice
Table 1. General conventions
Convention Meaning
Garamond blue type
Indicates a cross-reference hyperlink that points to a figure, graphic, table, or sec-
tion heading. Clicking on the hyperlink jumps you to the reference. When you
have finished reviewing the reference, click on the
Go to Previous View
button in the Adobe® Acrobat® Reader toolbar to return to your starting point.
Futura bold type
Commands and keywords are in
boldface
font.
Futura bold-italic type
Parts of commands, which are related to elements already named by the user, are
in
boldface italic
font.
Italicized Futura type
Variables for which you supply values are in
italic
font
Futura type Indicates the names of fields or windows.
Garamond bold type
Indicates the names of command buttons that execute an action.

13
Chapter 1
Introduction
Chapter contents
Product features and benefits.................................................................................................................................14
What is CompactPCI?...........................................................................................................................................14

Product features and benefits
14
Model 6276 User Guide
1 • Introduction
Product features and benefits
Thank you for purchasing Patton Electronics Co. Model 6276 ForeFront Half-Pipe Chassis with CPCI 2U
backplane/midplane. The Model 6276 FireFront Half-Pipe Chassis is a modular 2U x 19 inch rackmount sub-
rack-type CPCI packaging system.
The product offers a low cost, turnkey solution for customers desiring four 6U x 160mm slots in the least pos-
sible vertical rack space. The superior design also provides up to two power supply modules configured for
external DC or AC power input.
The rear of the chassis provides four 2U x 80mm slots for CPCI transition modules. Cooling is provided by
the specially designed plug-in fan tray module.
The Model 6276 ForeFront Half-Pipe Chassis complies with the
PICMG 2.0 R3.0 CompactPCI Specification
,
and
PICMG 2.5, ECTF H.110 (CT Bus) Specification
(Rev. 1.0), making it an excellent choice for redundant,
fault tolerant applications.
What is CompactPCI?
CompactPCI (Compact Peripheral Component Interconnect) is a high-performance industrial computer plat-
form based on the standard PCI electrical specification in rugged 3U or 2U Eurocard-style packaging, with a
high-quality 2mm metric pin and socket connector.
CompactPCI is an open specification supported by the PICMG (PCI Industrial Computer Man-
ufacturers Group), which is a consortium of companies involved in utilizing PCI for embedded
applications.
Distinct advantages of CompactPCI (“CPCI”) include:
•Cost/time savings—Because it is electrically compatible with PCI, CPCI allows designers to tap into the
wealth of available hardware and software. CPCI provides a substantial reduction in engineering and manu-
facturing costs because off-the-shelf items can be shipped to meet your configuration needs and delivery
schedules.
•Rugged and reliable—The Eurocard-style packaging—which includes two-piece shielded connectors for
better reliability and vertical card orientation for better cooling—provides a robust system based on a sub-
rack backplane architecture.
•Flexibility—CPCI allows either 32- or 64-bit PCI, plus offers an open architecture. Additional connectors
are defined for adding standard or proprietary buses or other needs. Hybrid CPCI systems allow bridging to
other buses or custom applications.
•Hot-swap capability—Boards can be hot-swapped without disrupting operation, a critical feature in real-
time and high-availability applications.
CompactPCI is rapidly becoming the backbone of today’s high-performance, embedded systems. It is ideally
suited for telecommunications, computer telephony, real-time machine control, industrial automation, real-
time data acquisition, instrumentation, military systems and other applications requiring high speed comput-
ing and modular, robust packaging design.

15
Chapter 2
Chassis specifications
Chapter contents
2U CPCI subrack..................................................................................................................................................16
Description of chassis front side.............................................................................................................................17
Description of chassis rear side...............................................................................................................................18
Electromagnetic compatibility (EMC)...................................................................................................................19
Electrostatic discharge (ESD) protection................................................................................................................20
Fan tray assembly ..................................................................................................................................................22
Chassis system specifications..................................................................................................................................23
Power considerations .............................................................................................................................................23

2U CPCI subrack
16
Model 6276 User Guide
2 • Chassis specifications
2U CPCI subrack
The Model 6276 ForeFront Half-Pipe is a modular 2U x 19 inch rackmount subrack-type packaging
system designed for the ForeFront CompactPCI open bus architecture. The rugged, rack-mounted
chassis system is ideal for carrier-class, defense, industrial, enterprise, and commercial environments.
The 6276 excels in its ease of access, superior cooling, and power distribution. The base unit is adapt-
able to a wide array of product configurations.
Product features include:
•Available in AC or DC power supply configurations
•Fully compatible with Patton ForeFront modules
•EMI shielding on entire assembly, with continuous chassis ground
•Lightweight and durable cold-rolled steel construction, suitable for rugged environments
•Only 11.70 in. (29.80 cm) deep
•Standard powder coating finish
•Front mounting flanges for 19 in. rack mount environments
Figure 1. Model 6276

Description of chassis front side
17
Model 6276 User Guide
2 • Chassis specifications
Description of chassis front side
There are four 6U x 160mm slots (a full CPCI bus segment) at the front of the chassis (see figure 2). Front-
entry ForeFront modules, in accordance with PICMG 2.0 R2.1 CompactPCI specifications, are plugged into
these slots.
Figure 2. Model 6276 ForeFront Half-Pipe Chassis

Description of chassis rear side
18
Model 6276 User Guide 2 • Chassis specifications
The front of the chassis also provides two slots suitable for 3Ux8HP ForeFront power supplies, model 6160
(DC) or 6165 (AC). These devices are described more completely in the 6160/6165 Users Manual.
All 6U slots provide 4HP module spacing and are on 0.80 in. centers (except for the power supply slots, which are
offset 0.1 inch as per PICMG 2.11 standard). Card guides are molded plastic with metallic ESD contacts (see
Electrostatic Discharge (ESD) Protection on page 20) per CompactPCI PICMG 2.0 R3.0 & IEEE 1101.10.
Figure 3. Front view of chassis
Description of chassis rear side
The rear of the chassis is divided into two areas:
•A set of four 6U slots for ForeFront transition modules (see figure 2 on page 17). These modules typically con-
tain cable connections for I/O interfaces such as T1/E1 trunks, optical fiber trunks, DSL lines, Ethernet, etc.
•A set of 3U slots allocated for the following uses (see figure 4 on page 19):
-Power input module—either Patton Model 6112 (DC) or Patton Model 6117 (AC) (see figure 5 on
page 19). These modules provide power input to the power supplies in the front of the chassis (see
figure 2 on page 17). The input module provides input for both power supplies.
-Model 6103 Alarm Card (optional)—provides contact closure alarm relay outputs for external alarm
monitoring,

Electromagnetic compatibility (EMC) 19
Model 6276 User Guide 2 • Chassis specifications
Figure 4. Rear view of chassis
Figure 5. AC and DC rear power entry modules
Electromagnetic compatibility (EMC)
The Model 6276 ForeFront Half-Pipe is designed to provide the highest levels EMC performance—in terms of
both interference and susceptibility. The chassis has the following design features to mitigate the effects of elec-
tromagnetic interference (EMI):
•All gaskets, contacts, and contact surfaces are electrically conductive.
•The mating surfaces of the EMC chassis and the EMC plug-in unit front panels and/or optional EMC filler
panels are also conductive by use of gaskets/strips.
•All chassis and plug-in contact surfaces are connected to a common chassis ground.

Electrostatic discharge (ESD) protection 20
Model 6276 User Guide 2 • Chassis specifications
Mating EMC gaskets and strips are used on the chassis, front panels of boards, and optional filler panels. An
EMC gasket is attached to the bottom of the chassis (front view), and an EMC strip is attached to the top.
Plug-in boards have the corresponding mates on the opposite side (see figure 6).
Figure 6. EMC strip and gasket on chassis and cards
The EMC strip on the left side of the board mates with the EMC gasket attached to the chassis when it is
plugged into the first slot. Each board mates together with corresponding gaskets/strips.
In addition, all metal components of the subrack are surface treated and conductive. Top, bottom, sides and
rear EMC covers provide mechanical protection and EMC shielding on the subrack. Retaining clips ensure
conductive connection.
The chassis contains an optional frame ground to signal ground jumper. By default, in all ForeFront Half-Pipe
products, this jumper is not installed. This means that frame ground (the electrical potential of the chassis shell
itself and all panels, screws, etc. that are connected to it) is electrically isolated from the signal ground (the elec-
trical potential corresponding to “0 volts” with respect to the power supplies and cards in the chassis). Patton
Electronics recommends that this isolation be maintained, in order to improve the EMC characteristics of the
system and the integrity of the two distinct grounds.
See the chapter on installation and maintenance for further information on the jumper settings.
Electrostatic discharge (ESD) protection
The 6276 ForeFront Half-Pipe chassis provides ESD protection in compliance with IEEE 1101.10. ESD con-
tacts are embedded inside and in the front section of card guides for making early as possible contact with a
discharge strip on one or both, the upper and/or lower edge of the plug-in board/module. Only one card guide
per slot (both front and rear) contain ESD clips. The ESD clip in the card guide is connected to the chassis
GND (ground).
Table of contents
Other Patton electronics Chassis manuals