VXI Technology EX2500 User manual

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EX2500
LXI-VXI GIGABIT ETHERNET
SLOT 0INTERFACE
USER’S MANUAL
P/N: 82-0115-000
Released May 23, 2006
VXI Technology, Inc.
2031 Main Street
Irvine, CA 92614-6509
[phone]

VXI Technology, Inc.
2 EX2500 Preface

www.vxitech.com
EX2500 Preface 3
TABLE OF CONTENTS
INTRODUCTION
Certification..........................................................................................................................................................5
Warranty ...............................................................................................................................................................5
Limitation of Warranty.........................................................................................................................................5
Restricted Rights Legend......................................................................................................................................5
DECLARATION OF CONFORMITY ...............................................................................................................................6
GENERAL SAFETY INSTRUCTIONS.............................................................................................................................7
Terms and Symbols ..............................................................................................................................................7
Warnings...............................................................................................................................................................8
SUPPORT RESOURCES ...............................................................................................................................................9
SECTION 1..................................................................................................................................................................11
OVERVIEW..............................................................................................................................................................11
Overview ............................................................................................................................................................11
Features...............................................................................................................................................................12
The Power of LXI .........................................................................................................................................12
Data Transfer Rates.......................................................................................................................................12
Simplified Cabling and Connectivity ............................................................................................................12
Familiar Software Interfaces .........................................................................................................................12
Embedded Resource Manager.......................................................................................................................12
Additional Features .......................................................................................................................................13
EX2500 Specifications .......................................................................................................................................14
TCXO/OCXO Option Specifications .................................................................................................................15
SECTION 2..................................................................................................................................................................17
PREPARATION FOR USE...........................................................................................................................................17
Overview ............................................................................................................................................................17
Unpacking...........................................................................................................................................................17
Required Equipment ...........................................................................................................................................17
Hardware Installation..........................................................................................................................................18
Cabling Considerations.......................................................................................................................................18
Segment Distance/Security............................................................................................................................18
EMI Environment..........................................................................................................................................18
Current LAN Implementation .......................................................................................................................18
Fiber Vs. Copper.................................................................................................................................................18
Copper Cable Recommendation .........................................................................................................................19
Fiber Optic Cable Recommendation...................................................................................................................19
Multiple Mainframe Configurations...................................................................................................................19
SECTION 3..................................................................................................................................................................21
MODULE DESCRIPTION ...........................................................................................................................................21
Front Panel Details .............................................................................................................................................21
LEDs .............................................................................................................................................................21
Connectors.....................................................................................................................................................21
Reset Button ..................................................................................................................................................21
Gigabit Ethernet Functionality............................................................................................................................22
Power On Self-Test LED Error Codes................................................................................................................22
Top Cover Details...............................................................................................................................................23
User Configurable Switches..........................................................................................................................23

VXI Technology, Inc.
4 EX2500 Preface
SECTION 4..................................................................................................................................................................27
SOFTWARE INSTALLATION......................................................................................................................................27
Introduction ........................................................................................................................................................27
VISA Requirements............................................................................................................................................27
Agilent VISA as Primary VISA Installation Path .........................................................................................27
Agilent VISA as Secondary VISA Installation Path .....................................................................................27
AGILENT VISA AS PRIMARY VISA ........................................................................................................................28
VISA Installation................................................................................................................................................28
EX2500 Driver Installation.................................................................................................................................32
Add the EX2500 Interface to Agilent VISA.......................................................................................................34
AGILENT VISA AS SECONDARY VISA ...................................................................................................................39
VISA Installation................................................................................................................................................39
EX2500 Driver Installation.................................................................................................................................43
Configure NI-VISA for Use with Agilent VISA ................................................................................................45
Add the EX2500 Interface to Agilent VISA.......................................................................................................46
SECTION 5..................................................................................................................................................................51
WEB PAGE OPERATION...........................................................................................................................................51
Overview ............................................................................................................................................................51
Opening the Web Page .......................................................................................................................................51
General Web Page Operation .............................................................................................................................51
Web Page Descriptions.......................................................................................................................................51
Firmware Version..........................................................................................................................................52
Login Error Message.....................................................................................................................................53
Login .............................................................................................................................................................53
IP Configuration............................................................................................................................................54
Module Options.............................................................................................................................................55
Device Status.................................................................................................................................................56
Module Information ......................................................................................................................................57
Memory I/O...................................................................................................................................................58
Formatted I/O ................................................................................................................................................59
Resource Manager Control............................................................................................................................60
Trigger Configuration....................................................................................................................................61
Interrupt Control............................................................................................................................................63
LED Test .......................................................................................................................................................64
Firmware Upgrade.........................................................................................................................................65
Report a Bug .................................................................................................................................................66
SECTION 6..................................................................................................................................................................67
TRIGGER MECHANISMS ..........................................................................................................................................67
Overview ............................................................................................................................................................67
LXI Trigger Controls..........................................................................................................................................68
VXI Trigger Controls .........................................................................................................................................68
SECTION 7..................................................................................................................................................................69
FIRMWARE UPDATES ..............................................................................................................................................69
Updating EX2500 Firmware...............................................................................................................................69
SECTION 8..................................................................................................................................................................71
TROUBLESHOOTING ................................................................................................................................................71
Overview ............................................................................................................................................................71
APPENDIX A...............................................................................................................................................................73
GLOSSARY ..............................................................................................................................................................73
INDEX.........................................................................................................................................................................75

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EX2500 Preface 5
CERTIFICATION
VXI Technology, Inc. (VTI) certifies that this product met its published specifications at the time of shipment from
the factory. VTI further certifies that its calibration measurements are traceable to the United States National
Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that
organization’s calibration facility, and to the calibration facilities of other International Standards Organization
members.
WARRANTY
The product referred to herein is warranted against defects in material and workmanship for a period of three years
from the receipt date of the product at customer’s facility. The sole and exclusive remedy for breach of any warranty
concerning these goods shall be repair or replacement of defective parts, or a refund of the purchase price, to be
determined at the option of VTI.
For warranty service or repair, this product must be returned to a VXI Technology authorized service center. The
product shall be shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer. However, the
buyer shall pay all shipping charges, duties, and taxes for products returned to VTI from another country.
VTI warrants that its software and firmware designated by VTI for use with a product will execute its programming
when properly installed on that product. VTI does not however warrant that the operation of the product, or
software, or firmware will be uninterrupted or error free.
LIMITATION OF WARRANTY
The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer, buyer-
supplied products or interfacing, unauthorized modification or misuse, operation outside the environmental
specifications for the product, or improper site preparation or maintenance.
VXI Technology, Inc. shall not be liable for injury to property other than the goods themselves. Other than the
limited warranty stated above, VXI Technology, Inc. makes no other warranties, express or implied, with respect to
the quality of product beyond the description of the goods on the face of the contract. VTI specifically disclaims the
implied warranties of merchantability and fitness for a particular purpose.
RESTRICTED RIGHTS LEGEND
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subdivision (b)(3)(ii) of the
Rights in Technical Data and Computer Software clause in DFARS 252.227-7013.
VXI Technology, Inc.
2031 Main Street
Irvine, CA 92614-6509 U.S.A.

VXI Technology, Inc.
6 EX2500 Preface
DECLARATION OF CONFORMITY
Declaration of Conformity According to ISO/IEC Guide 22 and EN 45014
MANUFACTURER’S NAME VXI Technology, Inc.
MANUFACTURER’S ADDRESS 2031 Main Street
Irvine, California 92614-6509
PRODUCT NAME LXI-VXI Slot 0 Interface
MODEL NUMBER(S) EX2500
PRODUCT OPTIONS All
PRODUCT CONFIGURATIONS All
VXI Technology, Inc. declares that the aforementioned product conforms to the requirements of
the Low Voltage Directive 73/23/EEC and the EMC Directive 89/366/EEC (inclusive 93/68/EEC)
and carries the “CE” mark accordingly. The product has been designed and manufactured
according to the following specifications:
SAFETY EN61010 (2001)
EMC EN61326 (1997 w/A1:98) Class A
CISPR 22 (1997) Class A
VCCI (April 2000) Class A
ICES-003 Class A (ANSI C63.4 1992)
AS/NZS 3548 (w/A1 & A2:97) Class A
FCC Part 15 Subpart B Class A
EN 61010-1:2001
I hereby declare that the aforementioned product has been designed to be in compliance with the relevant sections
of the specifications listed above as well as complying with all essential requirements of the Low Voltage Directive.
May 2006
Steve Mauga, QA Manager

www.vxitech.com
EX2500 Preface 7
GENERAL SAFETY INSTRUCTIONS
Review the following safety precautions to avoid bodily injury and/or damage to the product.
These precautions must be observed during all phases of operation or service of this product.
Failure to comply with these precautions, or with specific warnings elsewhere in this manual,
violates safety standards of design, manufacture, and intended use of the product.
Service should only be performed by qualified personnel.
TERMS AND SYMBOLS
These terms may appear in this manual:
WARNING Indicates that a procedure or condition may cause bodily injury or death.
CAUTION Indicates that a procedure or condition could possibly cause damage to
equipment or loss of data.
These symbols may appear on the product:
ATTENTION - Important safety instructions
Frame or chassis ground
Indicates that the product was manufactured after August 13, 2005. This mark is
placed in accordance with EN 50419, Marking of electrical and electronic
equipment in accordance with Article 11(2) of Directive 2002/96/EC (WEEE).
End-of-life product can be returned to VTI by obtaining an RMA number. Fees
for take-back and recycling will apply if not prohibited by national law.

VXI Technology, Inc.
8 EX2500 Preface
WARNINGS
Follow these precautions to avoid injury or damage to the product:
Connect Cables Properly To avoid damage and potential loss of phone service, ensure that
the RJ-45 connector on the front panel of the EX2500 is not
connected to a standard telephone jack. This should only be
connected to a network interface card, network router, or network
hub.
Avoid Electric Shock To avoid electric shock or fire hazard, do not operate this product
with the covers removed. Do not connect or disconnect any cable,
probes, test leads, etc. while they are connected to a voltage source.
Remove all power and unplug unit before performing any service.
Service should only be performed by qualified personnel.
Ground the Product This product is grounded through the grounding conductor of the
power cord. To avoid electric shock, the grounding conductor must
be connected to earth ground.
Operating Conditions To avoid injury, electric shock or fire hazard:
- Do not operate in wet or damp conditions.
- Do not operate in an explosive atmosphere.
- Operate or store only in specified temperature range.
- Provide proper clearance for product ventilation to prevent
overheating.
- DO NOT operate if any damage to this product is suspected.
Product should be inspected or serviced only by qualified
personnel.
Class 1 Laser Product The SFP module in this instrument is a Class 1 Laser device. Do not
attempt to disassemble this module. In the interest of safety, this
equipment should only be serviced by an authorized VXI
Technology representative. Please observe the following safety
precautions:
• Do not open the unit
• If the unit requires service, contact VXI Technology
• Ensure proper use by reading and following the
instructions carefully
• Do not attempt to make any adjustments to the unit
Improper Use The operator of this instrument is advised that if the equipment is
used in a manner not specified in this manual, the protection
provided by the equipment may be impaired.
Conformity is checked by inspection.

www.vxitech.com
EX2500 Preface 9
SUPPORT RESOURCES
Support resources for this product are available on the Internet and at VXI Technology customer
support centers.
VXI Technology
World Headquarters
VXI Technology, Inc.
2031 Main Street
Irvine, CA 92614-6509
Phone: [phone]
Fax: [phone]
VXI Technology
Cleveland Instrument Division
5425 Warner Road
Suite 13
Valley View, OH 44125
Phone: [phone]
Fax: [phone]
VXI Technology
Lake Stevens Instrument Division
VXI Technology, Inc.
1924 - 203 Bickford
Snohomish, WA 98290
Phone: [phone]
Fax: [phone]
Technical Support
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Visit http://www.vxitech.com for worldwide support sites and service plan information.

VXI Technology, Inc.
10 EX2500 Preface

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EX2500 Introduction 11
SECTION 1
OVERVIEW
OVERVIEW
VXI Technology’s EX2500 is the industry’s first gigabit LAN-based VXI Slot 0 interface, which
merges Ethernet’s robust architecture and widespread infrastructure, the fast emerging LXI
standard for instrumentation, and the popular VXIbus platform. Providing a solution that
recognizes a system designer’s need to remain compatible with legacy systems and desire to adopt
new technologies, the EX2500 integrates key features of the LXI standard to create a versatile
interface that extends the VXIbus to an external host through the power of Ethernet.
FIGURE 1-1: EX2500 LXI™-VXI GIGABIT ETHERNET SLOT 0INTERFACE

VXI Technology, Inc.
12 EX2500 Introduction
FEATURES
The Power of LXI
The VXI TTL trigger bus is a powerful component of VXI-based systems and is used to facilitate
hardware handshaking between modules, freeing up the CPU for other tasks. With the introduction
of the EX2500, all eight of the VXI TTL trigger lines can now be extended across multiple
mainframes and to other LXI devices through the LXI Trigger Bus compliant front panel
connectors (Low-Voltage Differential Signal or LVDS). Additionally, the EX2500 incorporates the
LXI standard VXI-11 instrument discovery mechanism, greatly simplifying integration within
hybrid systems.
Data Transfer Rates
As technology moves toward more data-intensive applications in the functional test and data
acquisition environments, the ability to quickly offload data to the host controller for processing is
critical. The EX2500 is a high-speed gigabit serial communications device and has been optimized
for transferring blocks of data in excess of 40 MB/s. A high-performance DMA controller is used
during block moves to achieve superior transfer rates. This is accomplished without compromising
traditional message-based (word-serial) command performance.
Simplified Cabling and Connectivity
Communication back to the host processor is achieved using a standard Cat 5e Ethernet cable.
Distances up to 200 meters between mainframe and host can be realized. A fiber optic connection
is available if even greater distances are required. Wireless control of VXI instruments is also now
possible through the use of wireless routers. The EX2500 achieves top performance when
connected to a gigabit LAN interface which is also a standard item in recent PC motherboards.
Low-cost gigabit Ethernet switches can be used to connect multiple mainframes to a single host.
For legacy systems, SMB connectors are provided for single-line trigger input/output as well as
external reference clock input/output.
Familiar Software Interfaces
The EX2500 is fully compliant with the VXIplug&play specifications and implements VISA as
the API communication layer. A standard VISA I/O library is included and integrates seamlessly
with either Agilent Technologies™ or National Instruments™ versions of VISA. This greatly
simplifies installation of the EX2500 into legacy systems using the VISA protocol and preserves
any investment in existing TPS (Test Program Set) and driver development by eliminating the
need for costly code modifications.
The VXI Resource Manager is resident on the module and executed automatically at power up, all
system resources are allocated without the need to run a separate utility. The EX2500 runs an
embedded web interface and system status including installed VXI hardware, memory allocation,
IP configuration, and logical address information can be viewed through an LXI-compliant web
page. Direct communication to installed devices through message or register-based commands can
be achieved through this interface. This interface allows firmware updates to be accomplished
quickly and easily.
Embedded Resource Manager
A resource manager (RESMAN), as defined by the VXIbus specification, primarily performs the
task of identifying all VXI devices in a mainframe and ensures that these devices have passed their
self-tests. RESMAN also configures the system’s A24 and A32 address maps, allocates the
VMEbus interrupt lines, and initiates normal system operation. Furthermore, RESMAN
establishes a system wide control hierarchy described by Commander and Servant relationships.

www.vxitech.com
EX2500 Introduction 13
Unlike other Slot 0 interfaces, the EX2500 has an embedded resource manager that runs on every
power up. Because RESMAN is integrated into the EX2500, there is no need for this utility to be
available in any other location, such as a PC. Since RESMAN runs on every power cycle of the
EX2500, user’s free themselves form the need to run this application manually as well as the need
to remember to run the application after device changes have been made to the mainframe.
Additional Features
The following features are also available on the EX2500:
•Dual media gigabit Ethernet interface (Cat 5e UTP or SFP-1000BASE SX or LX fiber optic)
•Auto-MDIX (Medium Dependent Interface Crossover) operation, eliminating the need for
crossover cables.
•Detailed link status indicators for Ethernet interface.
•Sophisticated trigger routing capabilities between the front panel input connectors (clock and
trigger), LXI triggers, and VXI triggers.
•Integrated web interface to provide status, test, and software/firmware update capability.
•Options for TCXO or OCXO Clock 10 generation.
•256 MB of 333 MHz DDR system memory, upgradeable to 2 GB.
•Capable of VXI-3.0 2eVME backplane cycles.
•LXI 1588 operation.
•A16, A24, A32 address space access.

VXI Technology, Inc.
14 EX2500 Introduction
EX2500 SPECIFICATIONS
GENERAL SPECIFICATIONS
PHYSICAL ATTRIBUTES
Size 1-slot, C-size
Weight 2.5 lbs (1.1 kg)
SLOT 0CAPABILITY
Yes
RESOURCE MANAGER
Embedded
ADDRESS SPACE ACCESS
A16, A24, and A32
VXI REVISION COMPLIANCE
1.4, 2.0, 3.0
MAXIMUM DATA TRANSFER RATE (BLOCK MOVE)
40 MB/s
MEMORY (DRAM)
Standard
Optional 256 MB, 333 MHz DDR SDRAM
Up to 2 GB available
TRIGGER SUPPORT
Bus Lines
Front Panel Connectors VXI TTL 0 – 7, LXI 0 – 7
EXT TRIG IN, EXT TRIG OUT
PROCESSOR SPEED
825 MHz
ETHERNET PROTOCOL
TCP/IP, VXI-11
I/O LIBRARY
Agilent I/O Library Suite (14.1 or later)
VISA SUPPORT
VXIplug&play compliant
OPERATING SYSTEM SUPPORT
Windows XP, Windows 2000
BACKPLANE POWER REQUIREMENTS
VOLTAGE +5 V +12 V +24 V -2 V -5.2 V -12 V -24 V +5 V STBY
IPEAK 4.6 A 45 mA 0 mA 55 mA 150 mA 0 mA 0 mA 0 mA
IDYNAMIC 450 mA 1 mA 0 mA 4 mA 2 mA 0 mA 0 mA 0 mA
ENVIRONMENTAL
OPERATING TEMPERATURE
0 °C to +50 °C
HUMIDITY
5% to 85% relative humidity

www.vxitech.com
EX2500 Introduction 15
TCXO/OCXO OPTION SPECIFICATIONS
STANDARD OSCILLATOR –USE VXI 10 MHZ
PERFORMANCE
±50 ppm
TCXO OPTION
PERFORMANCE
High Performance
AGING
±1 x 10-6/year
TEMPERATURE
±3 x 10-6 (0°C to 50°C)
ADJUSTMENT RANGE
±3 x 10-6 min
WARM-UP TIME
N/A
OCXO OPTION
PERFORMANCE
Ultra High Performance
AGING
±1 x 10-7/year
TEMPERATURE
±1 x 10-7 (0°C to 50°C)
ADJUSTMENT RANGE
±4 x 10-7 min
WARM-UP TIME
< 3 minutes

VXI Technology, Inc.
16 EX2500 Introduction

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EX2500 Preparation for Use 17
SECTION 2
PREPARATION FOR USE
OVERVIEW
This section provides a step-by-step process for setting up the EX2500 for use. It covers hardware
installation, input connections, and cabling considerations.
UNPACKING
When the EX2500 is unpacked from its shipping carton, do not cut the
plastic module retainer insert.
Remove the EX2500 from the retainer by properly unfolding the tension flaps that hold the
module. Save the retainer insert and shipping carton as it can be used to ship the EX2500 in the
event that it requires return to the manufacturer.
When the EX2500 is unpacked from its shipping carton, the contents should include the following
items:
•EX2500 LXI-VXI Gigabit Ethernet Slot 0 Interface
•EX2500 User’s Manual (this manual)
•EX2500 Quick Start Guide
•VXI Technology, Inc. Drivers and Product Manuals CD
All components should be inspected for damage. Also, take note of the MAC address located in
the Card Configuration section of the product label found on the top side cover (see Figure 3-2).
The MAC address may be required if problems arise when locating the module in the local
network.
REQUIRED EQUIPMENT
In order to use the EX2500, the following items are required:
•A VXIbus mainframe
•One of the following network cables:
oUnshielded Cat 5e Ethernet cable not exceeding 100 m in length
oFiber optic cable with appropriate connector for SFP module used (typically LC style
connectors) not to exceed the SFP manufacturers maximum length specification.
•A gigabit Ethernet switch (if multiple devices will be connected on the network)
•VMIP, SMIP, or other VXIbus cards which are part of the test system

VXI Technology, Inc.
18 EX2500 Preparation for Use
HARDWARE INSTALLATION
Once the system is defined and the EX2500 has been installed in the leftmost slot (slot 0) of the
mainframe, connect the network cable from the EX2500 to the LAN switch or directly to the PCs
NIC card. The EX2500 is auto-MDIX capable, making crossover cables unnecessary.
CABLING CONSIDERATIONS
The EX2500 can interface with a network through either copper or fiber media. Copper media
allows for three communication speeds: 10/100/1000 Mb/s, whereas fiber media is a 1000 Mb/s
only interface. To determine which type of media to use, some general guidelines can be made.
The following is a list of media choice considerations:
•Segment Distance/Security
•EMI Environment
•Current LAN Implementation
Segment Distance/Security
10/100/1000BASE-TX network spans are limited to 200 meters (100 meters point-to-point) and,
therefore, the developers of larger LANs face the necessity of providing fiber optic connectivity.
In general, fiber is reserved for situations that require cabling distances greater than 200 meters.
For example, going between buildings in a corporate campus environment or connecting
departments located on different floors of a high rise building.
Security is another possible factor that could influence a user to utilize fiber cabling. Fiber optic
cable cannot be spliced except under clean room conditions, making it nearly impossible for a
hacker to tap into the cable. A situation that requires an exposed intra-building network connection
makes fiber the best choice.
EMI Environment
Copper cable is susceptible to electromagnetic interference, which can corrupt files or generate
additional Ethernet traffic in the form of reissued messages. Fiber cable is not susceptible to these
electromagnetic sources of interference. Using fiber optic cabling with the EX2500 allows for
control of a test chassis from a computer located far away from the test lab or in areas that are near
elevators, fluorescent lighting, or other sources of high external noise.
Current LAN Implementation
If the potential location of an EX2500 is on an existing 10/100 Mb/s network, a gigabit fiber
connection will not fit without additional network equipment. At a minimum, a switch with a
gigabit fiber port is needed to connect fiber to the EX2500. On the other hand, another Cat 5e UTP
patch cord would be the only requirement to put the EX2500 on the existing network.
FIBER VS.COPPER
The table below summarizes some of the differences between fiber optic and copper cabling:
FIBER COPPER
Bandwidth Gigabit Gigabit
Distance 40 km+ @ 1,000 Mb/s 100 m @ 1000 Mb/s
Noise Immune EMI/RFI susceptible
Security Almost impossible to tap Susceptible to tapping
TABLE 2-1: CABLE COMPARISON

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EX2500 Preparation for Use 19
COPPER CABLE RECOMMENDATION
The type of copper cable VTI recommends is Cat 5e UTP (Unshielded Twisted Pair).
FIBER OPTIC CABLE RECOMMENDATION
Fiber optic cables are specified by their core diameter and the type of fiber: multi-mode or single-
mode. When using a 1000BASE-SX fiber optic transceiver, three possible cable choices can be
made:
1) 62.5/125 m MMF(multi-mode fiber)
2) 50/125 m MMF
3) 9/125 µm SMF (single-mode fiber)
In the descriptions above, the first number refers to the diameter of the fiber optic core, and the
second number refers to the diameter of the cladding. The cladding is the outer diameter and the
core refers to the cable’s inner diameter. (See Figure 2-1 below.)
Core
Cladding
Cable Jacket
FIGURE 2-1: FIBER OPTIC CABLE CROSS-SECTION
In general, the core diameter is segment length dependent. If the fiber segment between the
EX2500 and the switch is 2 m to 300 m, use a 62.5/125 m MMF cable. For segments greater than
300 m, use a 50/125 m MMF cable. Finally, the proper fiber cable connectors must be specified
when ordering X/125 m MMF cable. The EX2500 interfaces to fiber via the SFP port. This port
accepts a transceiver that requires an LC duplex style connector. The other end that connects to the
switch must be specified by the user.
MULTIPLE MAINFRAME CONFIGURATIONS
The EX2500 features an 8-channel LXI trigger bus on the front panel. These channels are used
primarily for high-speed multi-unit triggering and synchronization. Currently, the EX2500 can
route VME TTL or ECL triggers to the LXI trigger bus or from the LXI trigger bus to the VME
aforementioned triggers. Connecting the EX2500’s LXI trigger bus to other LXI devices or to
other EX2500s is done using a VXI Technology trigger bus cable.