C&H Technologies EM405-8 User manual

Manual Part No: 11029384
MODEL
EM405-8
USER'S MANUAL
ETHERNET
M-MODULE
CARRIER/
LXI BRIDGE
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ii
COPYRIGHT
C&H Technologies, Inc. (C&H) provides this manual "as is" without warranty of any kind,
either expressed or implied, including but not limited to the implied warranties of
merchantability and fitness for a particular purpose. C&H may make improvements and/or
changes in the product(s) and/or program(s) described in this manual at any time and without
notice.
This publication could contain technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated in new editions
of this publication.
Copyright © 2007by C&H Technologies, Inc.
The information and/or drawings set forth in this document and all rights in and to inventions
disclosed herein which might be granted thereon disclosing or employing the materials, methods,
techniques, or apparatus described herein, are the exclusive property of C&H Technologies, Inc.
A Reader's Comment Form is provided at the back of this publication. If this form has been
removed address comments to:
C&H Technologies, Inc.
Technical Publications
445 Round Rock West Drive
Round Rock, Texas 78681-5012
C&H may use or distribute any of the information you supply in any way that it believes
appropriate without incurring any obligations whatever.
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iii
DOCUMENT REVISION NOTICE
C&H Technologies, Inc. makes every attempt to provide up-to-date manuals with the associated
equipment. Occasionally, throughout the life of an instrument, changes are deemed necessary to
equipment related documentation. The latest revision of our documentation is available for
download from our web site at http://www.chtech.com.
NOTE
The contents of any amendment may affect operation,
maintenance, or calibration of the equipment.
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INTRODUCTION
This manual describes the operation and use of the C&H Model EM405-8 Ethernet M-Module
Carrier/LXI Bridge (Part Number 11029380). This instrument is one of a number of M-Module
carriers provided by C&H.
Contained within this manual are the physical and electrical specifications, installation and
startup procedures, functional description, and configuration and programming guidelines to
adequately use the product.
Software drivers for an installed M-Module may be provided by the M-Module manufacturer.
Some drivers may require modification to operate correctly with the communication protocol and
the addressing methodology used by the EM405-8. To support initial operation and application
software development, C&H provides a software application called Interactive Mezzanine
Control (IMC). The application provides immediate access and control of any M-module
residing on an EM405-8. IMC can be downloaded from the support section of C&H’s website
www.chtech.com.
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TABLE OF CONTENTS
1.0 GENERAL DESCRIPTION............................................................................................1
1.1 PURPOSE OF EQUIPMENT.............................................................................................1
1.2 FEATURES AND SPECIFICATIONS..............................................................................2
1.2.1 Key Features ................................................................................................................ 2
1.2.2 Specifications............................................................................................................... 2
1.3 ELECTRICAL....................................................................................................................4
1.4 MECHANICAL..................................................................................................................4
1.5 ENVIRONMENTAL..........................................................................................................4
1.6 BUS COMPLIANCE..........................................................................................................5
1.7 APPLICABLE DOCUMENTS........................................................................................... 5
2.0 INSTALLATION..............................................................................................................6
2.1 UNPACKING AND INSPECTION................................................................................... 6
2.2 HANDLING PRECAUTIONS...........................................................................................6
2.3 INSTALLATION OF M-MODULES ................................................................................6
2.4 REMOVAL OF M-MODULES..........................................................................................7
3.0 FUNCTIONAL DESCRIPTION.....................................................................................9
3.1 GENERAL..........................................................................................................................9
3.1.1 Embedded Controller...................................................................................................9
3.1.2 Ethernet Interface.......................................................................................................10
3.1.3 USB Interface.............................................................................................................10
3.1.4 PCI to Local Bus Bridge............................................................................................10
3.1.5 M-Module Interface...................................................................................................10
3.1.6 Trigger Control ..........................................................................................................10
3.1.7 AC/DC Converter ......................................................................................................10
3.1.8 DC/DC Converter ......................................................................................................10
3.2 FRONT PANEL................................................................................................................11
3.3 REAR PANEL..................................................................................................................12
4.0 OPERATING INSTRUCTIONS...................................................................................13
4.1 GENERAL........................................................................................................................13
4.2 DISCOVERY.................................................................................................................... 13
4.3 WEB SERVER ................................................................................................................. 13
4.4 CONFIGURING THE ETHERNET INTERFACE..........................................................14
4.4.1 TCP/IP Mode.............................................................................................................15
4.4.2 IP Address..................................................................................................................16
4.4.3 Subnet Mask...............................................................................................................16
4.4.4 Gateway .....................................................................................................................16
4.4.5 Raw Socket ................................................................................................................ 16
4.4.6 Raw Socket Port.........................................................................................................16
4.4.7 Restoring Factory Defaults........................................................................................ 17
4.4.8 Password.................................................................................................................... 17
4.5 STATUS/CONTROL WEBPAGE ...................................................................................17
4.5.1 M-Module Information..............................................................................................18
4.5.2 Temperature............................................................................................................... 18
4.5.3 Fan Full On ................................................................................................................ 18
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4.5.4 Self Test Button..........................................................................................................18
4.5.5 System Reset ..............................................................................................................18
4.5.6 Device Clear...............................................................................................................19
4.6 COMMUNICATING WITH THE CARRIER AND M-MODULES...............................20
4.6.1 Error Handling............................................................................................................21
4.6.2 Write Data command..................................................................................................22
4.6.3 Read Data command...................................................................................................23
4.6.4 Block Access ..............................................................................................................23
4.6.4.1 Block Write command........................................................................................25
4.6.4.2 Block Read command.........................................................................................26
4.6.5 EM405-8 Configuration/Status Registers...................................................................27
4.7 IVI AND M-MODULE DRIVERS...................................................................................36
4.8 CONTROLLING THE TRIGGERS..................................................................................36
4.9 FAN AND TEMPERATURE CONTROL........................................................................37
APPENDIX A -CONNECTORS............................................................................................ A-1
LIST OF FIGURES
Figure 1. EM405-8 Ethernet M-Module Carrier ............................................................................1
Figure 2. M-Module Configuration Diagram.................................................................................7
Figure 3. M-Module Installation.....................................................................................................8
Figure 4. M-Module Removal........................................................................................................8
Figure 5. Functional Block Diagram ..............................................................................................9
Figure 6. Front Panel ....................................................................................................................11
Figure 7. Rear Panel .....................................................................................................................12
Figure 8. Web Home Page............................................................................................................14
Figure 9. Web LAN Configuration Page......................................................................................15
Figure 10. Web Status/Control Page ............................................................................................19
Figure 11. EM405-8 Registers......................................................................................................29
Figure 12. Trigger Logic (Input Direction) ..................................................................................37
Figure 13. Trigger Logic (Output Direction)................................................................................37
Figure A-1. LVDS Micro-D Connector..................................................................................... A-1
Figure A-2 DC Input Connector................................................................................................. A-1
LIST OF TABLES
Table I. Command Summary........................................................................................................20
Table II. Status Code (SC)............................................................................................................21
Table III. Register Summary ........................................................................................................27
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1.0 GENERAL DESCRIPTION
The EM405-8 easily bridges up to eight (8) standard M-Modules to a LXI system or typical
Ethernet (LAN) network. The carrier providesfull access to the M-Module I/O space via the
standard TCP/IP networking protocol. LXI compliance provides a standard method of device
discovery, easy configuration through an intuitive web interface, and a standard IVI driver for
communication with the EM405-8 controller.
On the -0001 version, M-Module triggers are also fully supported allowing them to be connected
to any other installed M-Module or to an external device. Both TTL and LVDS signal levels are
supported. Please note that the triggers have currently not been approved as LXI compliant.
Use should be limited to non-LXI applications. A simple command structure eases software
integration and allows reset, identification, control, and configuration of the carrier and M-
Modules. For a complete list of M-Modules compatible with the EM405-8 carrier, visit the
Support section on C&H’s website (www.chtech.com).
Figure 1. EM405-8 Ethernet M-Module Carrier
1.1 PURPOSE OF EQUIPMENT
The EM405 easily interfaces a VITA 12-1996 standard M-Module to a typical Ethernet network.
The carrier allows the numerous functions available in the M-Module mezzanine format to be
remotely located near the unit-under-test, easing many system integration issues. Over 100 M-
Modules are available from numerous manufacturers.
WARNING: This product is not designed for use in explosive environments.
EM405-8 ETHERNET M-MODULE CARRIER
0
1
2
3
4
5
6
7
RST
PWR
STATUS
LAN
LAN RST
TOGGLE TO RESET
AC INPUT
TTL TRIGGERS LVDS TRIGGERS
LAN
10/100 BASE-T USB
IN
OUT
DC INPUT
POWER
36-75VDC 85-265AC
47-63Hz
OVER-CURRENT
PROTECTED
DISCONNECT
POWER CORD
BEFORE REMOVING
COVER
ON
OFF
NO AUTO-MDIX
EQUIPMENT
LABEL
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1.2 FEATURES AND SPECIFICATIONS
1.2.1 Key Features
Supports eight ANSI/VITA 12-1996 compliant single-wide M or MA-modules or a
combination of double or triple-wide modules
Complies with LXI Standard Rev. 1.1 for a Class C (Bridge) instrument
Ethernet 10Base-T, 100Base-TX (Auto-Sensing)
Rugged steel/aluminum 19 inch rack mount 1U High enclosure
AC Input 85-265VAC, 47-63Hz (accepts standard IEC 320-C13 power cords)
Alternatively powered by an external +48VDC (5-pin circular DIN connector)
Forced air cooling with software temperature status monitoring
IVI driver provides control of the EM405-8 bridge functions
Configuration through an intuitive web interface
Flexible block access command provides rapid sequential and FIFO data accesses
External and inter-module triggers supported (-0001 version only)*
Isolated and filtered +5V, +12V, and -12V supplies for each M-Module
Power-off reset-able breakers provided for each M-Module position
* The triggers have currently not been approved as LXI compliant. Use should be
limited to non-LXI applications.
1.2.2 Specifications
MAXIMUM RATINGS
Parameter Condition Rating Units
Operating Temperature 0 to +60 C
Non-Operating Temperature -40 to +75 C
Humidity non-condensing 5 to 95 %
DC Input Voltage Level 75 V max.
DC Input Surge Voltage 100ms 100 V max.
AC Input Protection rocker switch 4 A max.
Input Power Consumption with 8 M-Modules at 10W each 100 Watts
Total M-Module Current (total for all
eight positions) +5V
+12V
-12V
8.0
1.6
1.6
A
A
A
M-Module Current (each position,
total for all M-Modules can not
exceed Total M-Module Current)
+5V
+12V
-12V
2.0
900
900
A
mA
mA
External TTL Trigger Input
(-0001 versions only) Power Off Power On ±40 ±36 V V
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CHARACTERISTICS
Limit
Parameter Conditions Min Typ. Max Units
Data Transfers
Throughput Ethernet – block read 1, 3
Ethernet –block write 2, 3 400K 300K 450K 350K bytes/sec bytes/sec
AC Input Power (IEC 320-C13)
Level AC 85 265 V
Power Consumption for full M-Module support 100 W
DC Input Power (DIN Connector)
Level DC 36 48 75 V
Power Consumption for full M-Module support 100 W
Power Consumption
Carrier (internal logic) -0001 with trigger support
-0002 without trigger support 25 22 W W
Triggers (-0001 version only)
Maximum Frequency 40 MHz
Minimum Pulse Width Driven Mode
≤10 meter connection segment
≤20 meter connection segment
Wired-OR Mode
≤10 meter connection segment
≤20 meter connection segment
10
20
20
40
ns
ns
ns
ns
Intermodule Trigger Delay M-module to M-Module 21 27 ns
Intermodule Skew M-module to M-Module 3 6 ns
TTL Trigger Delay External BNC connector to M-Module
M-module to external BNC connector 22 24 28 30 ns ns
LVDS Trigger Delay External connector to M-Module
M-module to external connector 20 20 26 26 ns ns
BNC Output Level into a high impedance load 3.8 5.0 5.4 V
BNC Output Impedance 50 
BNC Input Level TLVL = 0 4
TLVL = 1 2.5 1.4 V V
BNC Input Impedance TIMP = 0 4
TIMP = 1 900K 1M 50 

LVDS Differential Output Magnitude 480 650 mV
LVDS Differential Input
(Type 1 receiver) Threshold, positive-going Threshold, negative-going
Hysteresis
-50
25
50 mV
mV
mV
Cooling
Temperature Rise 20 °C
Temperature Accuracy -1 +1 °C
Notes:
1. Several milliseconds of overhead and latency occur on each command issued. The effect of this
overhead and latency is reduced by transferring large amounts of data with a single block read
command. Maximum read throughput is achieved by reading >4K bytes of data from a FIFO type
register on an M-Module using the Block Read command. Host software may vary and can limit the
maximum throughput.
2. The maximum number of bytes that can be written in a single block write command is 1024.
3. Ethernet is a non-deterministic communications interface. Realized throughput may be significantly
degraded by network activity or other factors that may affect network performance.
4. TLVL and TIMP refer to register bits in the TTL Trigger Control register. Refer to section 4.6.5.
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1.3 Electrical
The EM405-8 can be operated from AC or DC power. The AC input accepts an industry
standard IEC 320-C13 power cord and automatically accepts an AC level between 85 and 265V
(47-63Hz). The power ON/OFF switch serves as an overload protection device. Toggling the
switch through the OFF position and back ON will reset the mechanism. The AC power is
converted to +48VDC for internal usage. Alternatively,the EM405-8 can be powered directly
by an external +48VDC (nominal) power supply. The external connector mates to a 5-pin
circular DIN male connector. See Appendix A for connector pin outs. The +48VDC power is
subsequently converted to +5V, +3.3V, +12V, and -12V to be used by the internal logic and M-
Modules.
Isolated and filtered +5V, +12V, and -12V supplies are provided to each M-Module position. In
addition, each position has separate power-off reset-able breakers for each voltage level supplied.
If a fault occurs, power must be removed from the EM405-8 before the breaker will reset. The
breakers are rated at 2.5 amps for the +5V power and 1.25A for the +12V and -12V power. This
allows usage of M-Modules that exceed the ANSI/VITA Std. 12-1996 specification for power
consumption;however, the total M-Module power consumption is limited to 8A for the +5V
supply and 1.6A each for the ±12V supplies.The ANSI specification allows a maximum of 1A
for the +5V supply and 200mA each for the ±12V supplies for a single M-Module.
1.4 Mechanical
The EM405-8 is contained in a 19 inch rack mount 1U high metal chassis with an outside
dimension of 19.0 inches wide by 12.2 inches deep by 1.72 inches high. A series of fansprovide
forced air for cooling the M-Modulesand the carrier electronics. The unit weighs approximately
9lbs with no M-Modules installed.
1.5 Environmental
The environmental specifications of the module are:
Operating Temperature: 0C to +60C*
Storage Temperature: -40C to +75C
Humidity: <95% without condensation
* The forced air cooling is designed to allow a maximum 20C temperature rise for
installed M-Modules. In other words, with eight M-Modules operating at full
dissipation (10W each), the M-Modules’ temperature can only be maintained within
20C of the ambient air inlet temperature. Installed M-Modulesmay differ in
environmental specifications. Refer to individualM-Module’s documentation for more
information.
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1.6 Bus Compliance
The carrier complies with the ANSI/VITA 12-1996 Specification for single or double-wide M-
Modules and the MA-Module trigger signal extension.
Addressing: A08 only (extended addressing not supported)
Data: D16 only
Interrupts: not supported
DMA: not supported
Triggers: Trig A and Trig B Input/Output (-0001 version only)
Manufacturer ID: 0FC116
Model Number: 0FD916
The carrier also complies with the LXI Standard Rev. 1.1 for a Class C (Bridge) instrument.
1.7 APPLICABLE DOCUMENTS
ANSI/VITA 12-1996 American National Standard for The Mezzanine Concept M-
Module Specification, Approved May 20, 1997, VMEbus
International Trade Association, 7825 E. Gelding Dr. Suite
104, Scottsdale, AZ 85260-3415, E-mail: [e-mail],
www.vita.com
IEEE-802.3 (ANSI 8802.3) Ethernet Network Standard
LXI Standard Rev 1.1 LXI Consortium, August 28, 2006, www.lxistandard.org
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2.0 INSTALLATION
2.1 UNPACKING AND INSPECTION
Verify that there has been no damage to the shipping container. If damage exists then the
container should be retained, as it will provide evidence of carrier caused problems. Such
problems should be reported to the carrier immediately as well as to C&H. If there is no damage
to the shipping container, carefully remove the instrument from its box and inspect it for any
signs of physical damage. If damage exists, report immediately to C&H.
2.2 HANDLING PRECAUTIONS
The components used in the EM405-8 are static sensitive. Damage may occur if proper static
precautions are not taken. Installation of M-Modules should only be done at a properly grounded
static free workstation.
CAUTION: Read the entire User's Manual before proceeding with the
installation and application of power.
2.3 INSTALLATION OF M-MODULES
To install modules, first remove power from the carrier. Remove the top cover by removing the
six screws located on the top cover. Do not remove the screws located on the front and rear
connector panels. There are eight M-Module mounting locations on the EM405-8 as illustrated
in Figure 2. Install the modulesby firmly pressing the connector on the M-Module together with
the connector on the carrier as shown in Figure 3. Care must be exercised to ensure the pins are
properly aligned. See “WARNING” and “CAUTION” below. Secure the module through the
holes in the bottom of the enclosure using screws provided with the M-Module. Replace the top
cover before applying power.
WARNING: The EM405-8 supports M-Modules that use two or three row
interface connectors. When using M-Modules with only two
rows, row C of connector (rear row)is left unconnected.
CAUTION: M-module connectors are NOT keyed. Use extra caution to
avoid misalignment. Applying power to a misaligned module
can damage the M-Module and carrier.
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2.4 REMOVAL OF M-MODULES
To remove an M-Module, first remove all four screws from the holes in the bottom of the
enclosure. Do NOT remove the screws from the top of the M-Module. With several fingers of
one hand, apply an upward pressure to the back of the mating connector. With your other hand,
slowly rock the module from side to side. The module should slowly loosen itself from the
carrier header pins. If the EM405-8 is completely full, a pointed prying bar may be required to
help remove the first module. The point of the prying bar can be placed between the carrier
header and the M-Module to loosen the connection as shown in Figure 4.
Figure 2. M-Module Configuration Diagram
FAN
FANFANFAN FANFANFANFAN
INTERNAL ELEC
TRONICS
(DO NOT REMOVE COVER)
MODULE
0 MODULE 1 MODULE 2 MODULE 3 MODULE 4 MODULE 5 MODULE 6 MODULE 7
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Figure 3. M-Module Installation
Figure 4. M-Module Removal
Carrier
M-Module
Install screws
A B C M-Module
with two row
connector
shown
Carrier
M-Module
Remove screws
Rock module side to
side while prying
Do NOT remove these screws
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3.0 FUNCTIONAL DESCRIPTION
3.1 GENERAL
The EM405-8 provides a mechanical and electrical interface between an Ethernet bus and up to
eight M-Modules. It utilizes an embedded microcontroller to provide buffering and command
translation between the Ethernet interface and the M-Modules. A simplified functional block
diagram is shown in Figure 5.
Figure 5. Functional Block Diagram
3.1.1 Embedded Controller
The embedded controller is implemented using a high-performance microprocessor module. The
microcontroller executes system firmware that controls the translation between Ethernet and the
M-Module interface.The system firmware implements a simple command protocol that allows
access to the M-Modules I/O space, trigger mapping and carrier information and status.
ETHERNET EMBEDDED
CONTROLLER
M-MODULE
INTERFACE
DC/DC
CONV
85-265VAC IN
POSITION 7
M-MODULE 7
TTL
TRIGGERS
OR
+48VDC
10/100 BASE-
T
POSITION 6
M-MODULE 6
POSITION 5
M-MODULE 5
POSITION 4
M-MODULE 4
POSITION 3
M-MODULE 3
POSITION 2
M-MODULE 2
POSIT
ION 1
M-MODULE 1
POSITION 0
M-MODULE 0
AC/DC
CONV
PCI TO LOCAL
BUS BRIDGE
TRIGGER
CONTROL
LVDS
XCVR
-0001 VERSION ONLY
LVDS
TRIGGERS
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3.1.2 Ethernet Interface
The Ethernet interface provides the physical and logical connection to the EM405-8 allowing
remote control of the M-Modules. The EM405-8 provides a 10/100 Base-T Ethernet connection
for communication purposes. The interface supports the TPC/IP protocol for control of the M-
Modules. It also supports DHCP, Telnet, and other standard protocols for device configuration
and management.
3.1.3 USB Interface
The USB interface is used for development purposes only. The USB interface is fully
compatible with USB specification version 1.1 and supports both 12 Mbps and 1.5 Mbps transfer
speeds.
3.1.4 PCI to Local Bus Bridge
The PCI to Local Bridge provides the interface between the embedded controllers PCI bus and
the M-Module and Trigger control logic.
3.1.5 M-Module Interface
The M-Module interface provides the mechanism for the microcontroller to access the M-
Modules. It is implemented using programmable logic that emulates a bridge between the
microcontroller and the M-Module bus.
3.1.6 Trigger Control
The trigger control logic provides control of the intermodule triggering, the TTL Triggers, and
the LVDS triggers. It is implemented using programmable logic. The trigger control logic is
only available on the -0001 version. The triggers have currently not been approved as LXI
compliance. Use should be limited to non-LXI applications.
3.1.7 AC/DC Converter
The AC input power is converted to the +48VDC power for subsequent conversion to levels
required by the carrier and the M-Modules.
3.1.8 DC/DC Converter
The +48VDC power is converted to +5V, +3.3V, +12V, -12V, and other levels required by the
onboard carrier logic and the M-Modules.
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3.2 FRONT PANEL
The front panel of the EM405-8 contains eight openings for access to the M-Modules’ front
panel connections as shown in Figure 6. Below each opening is an LED indicator that indicates
an access to that M-Module. The LED will illuminate temporarily each time the module is
accessed by the host software. On the far left side, below the PWR indicator, access to the
carrier reset switch is provided through a small pinhole. To reset (reboot) the carrier,
momentarily depress the switch using a small round object such as a bent paper clip. There are
three LED indicators on the left side of the front panel. The functions of these indicators are:
STATUS: indicates aself-test failure.
LAN: indicates the status of the LAN interface.
Solid On Green –Normal operation
Flashing Green –Device Identify
Solid On Ready –LAN Fault (see list below)
PWR: indicates that +48V internal power is present.
Potential LAN faults include:
1. Failure to acquire a valid IP address
2. Detection of a duplicate IP address
3. Failure to renew an already acquired DHCP lease (failure to obtain an initial DHCP lease is
not a failure)
4. LAN cable disconnected
Figure 6. Front Panel
EM405-8 ETHERNET M-MODULE CARRIER
0
1
2
3
4
5
6
7
RST
PWR
STATUS
LAN
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3.3 REAR PANEL
The rear panel of the EM405-8 contains connectors for the Ethernet and USB interfaces, TTL
and LVDS triggers (-0001 versions only), and AC or DC input power. An AC power
switch/breaker is available on the far right side and a LAN reset access hole is available below
the LAN connector. The LAN reset switch allows reset of the Ethernet configuration to factory
default values. See section 4.4.7 for details. A grounding stud/nut is also provided for
connection of the chassis to a suitable equipment ground. Refer to Appendix A for pin-out
details of the LVDS and DC input power connectors.
Figure 7. Rear Panel
LAN RST
TOGGLE TO RESET
AC INPUT
TTL TRIGGERS LVDS TRIGGERS
LAN
10/100 BASE-T USB
IN
OUT
DC INPUT
POWER
36-75VDC 85-265AC
47-63Hz
OVER-CURRENT
PROTECTED
DISCONNECT POWER
CORD BEFORE
REMOVING COVER
ON
OFF
NO AUTO-MDIX
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4.0 OPERATING INSTRUCTIONS
4.1 GENERAL
The EM405-8 is controlled through the Ethernet interface using the TCP/IP protocol to carry a
simple command structure to the module. The carrier contains a set of software controlled
registers that allow the user to request status from the carrier, identify the carrier, and configure
the carrier. All other M/MA controls are dependent on the specific M-Module(s) that reside on
the carrier.
The EM405-8 is LXI compliant, which provides standard Ethernet I/O communication. The
Ethernet interface must be properly configured to work on the user’s network. The flexibility of
the EM405-8’s Ethernet interface allows it to be used in a large number of possible network
configurations. The unit is delivered with a default configuration that may or may not be
appropriate for the user’s network. It is up to the user and the user’s network administrator to
use the information provided throughout this section to determine what configuration is best for
the given network.
4.2 DISCOVERY
As required by the LXI specification, the EM405-8 supports the VXI-11 protocol for device
discovery and communication. This allows any VXI-11 based discovery utility to discover the
EM405-8 on the user’s network without the requirement of knowing the EM405-8’s current IP
address. VXI-11 discovery utilities are generally included with the VISA I/O library package
provided by several third-party vendors.
The EM405-8 allows for one network link per installed M-Module, plus one network link for the
carrier itself. Therefore, it is likely that the discovery utility will discover several instruments at
the same IP address. For example, if the carrier is fully populated with 8 M-Modules, the device
discovery utility may discover 9 instruments at the IP address of the EM405-8.
4.3 WEB SERVER
To use the EM405-8’s web interface, open a web page at the device’s IP address. This can be
done using any W3C compliant browser, such as Windows Internet Explorer or Mozilla Firefox.
Enter the IP address as: x.x.x.x (i.e. 192.168.1.225)
The first (Home) page provides instrument details such as the instrument model, manufacturer,
serial number, description, LXI class, LXI compliance level, hostname, MAC address, TCP/IP
address, and firmware revision,as shown in Figure 8. The Home page also allows you to find
the physical device associated with a particular IP address by clicking the Device Identify button.
During identification, the LAN Status indicator on the front panel of the EM405-8 will blink
rapidly. The indicator will continue to blink until the Stop Identifying button is pressed.
From the Home page, the LAN configuration and Status/Control pages can be accessed using the
links in the navigation menu.These pages are discussed later.
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, Texas 78681 <> www.chtech.com

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Figure 8. Web Home Page
4.4 CONFIGURING THE ETHERNET INTERFACE
Network configuration of the EM405-8 is performed through the LAN Configuration page of the
web interface. To view the LAN Configuration page, select the LAN Configuration link from
the navigation menu found on the left side of all EM405-8 web pages.
A screenshot of the LAN Configuration page is shown in Figure 9. From this page, the user can
configure the IP configuration mode, IP address, subnet mask, default gateway, and the raw
socket utility. Each of these is discussed further in the following sections.
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, Texas 78681 <> www.chtech.com