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CMG-CD24S6EAM
User Manual
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Guralp Systems CMG-CD24S6EAM User Manual

CMG-CD24S6EAM
Technical Manual
Document No. MAN-C24-0003
Designed and manufactured by Guralp Systems Limited 3 Midas House, Calleva Park Aldermaston RG7 8EA England
Issue A May 2011
CMG-CD24S6EAM Contents
Table of Contents
1 Prelims............................................................................................................................... 1
1.1 Proprietary Notice...................................................................................................... 1
1.2 Cautions and Notes.................................................................................................... 1
1.3 Manuals and Software................................................................................................ 1
1.4 Conventions................................................................................................................ 1
2 Introduction.......................................................................................................................2
2.1 Equipment Overview.................................................................................................2
2.2 Ports............................................................................................................................ 2
2.2.1 External Ports...................................................................................................... 2
2.2.2 Internal Ports....................................................................................................... 4
2.3 System Architecture................................................................................................... 5
2.3.1 Acquisition units................................................................................................. 5
2.3.2 Example sensor station....................................................................................... 6
3 Setting up the CMG-CD24S6EAM ................................................................................... 7
3.1 Initial Installation.......................................................................................................7
3.2 Connecting to the Lantronix WiPort NR....................................................................7
3.3 Connecting to the CMG-EAM.................................................................................... 8
3.4 Using the internal mass storage device...................................................................10
3.5 Warning and error reporting.................................................................................... 11
3.5.1 Configurable parameters in simple mode........................................................ 11
3.5.2 Configurable parameters in expert mode.........................................................12
4 Appendices...................................................................................................................... 13
4.1 Appendix A - Default Settings.................................................................................13
4.1.1 Lantronix WiPort NR Default Settings............................................................. 13
4.1.2 Lantronix WiPort NR Default Settings Screenshots.........................................14
4.1.3 EAM Fast Port Default Settings........................................................................ 17
4.1.4 EAM Fast Port Default Settings Screenshots....................................................18
4.2 Appendix B - Lantronix WiPort NR Device Manager..............................................20
4.3 Appendix C - Advanced network configuration......................................................23
4.3.1 Accessing the configuration menu via the serial Interface..............................23
4.3.2 Configuring the network interfaces..................................................................24
4.3.3 Configuring the Ethernet port...........................................................................24
4.4 Appendix D - Using terminal emulators..................................................................26
4.4.1 Hyperterminal, as provided with Windows XP...............................................26
4.4.2 Using Hyperterminal with Windows Vista or Windows 7..............................28
4.4.3 Using PuTTY.................................................................................................... 28
4.5 Appendix E - Connector pinouts.............................................................................31
MAN-C24-0003 Issue A - May 2011
CMG-CD24S6EAM Contents
4.5.1 SENSOR A & B.................................................................................................. 31
4.5.2 GPIO.................................................................................................................. 32
4.5.3 GPS.................................................................................................................... 33
4.5.4 USB.................................................................................................................... 34
4.5.5 Ethernet............................................................................................................. 35
4.5.6 Power/Data Out................................................................................................. 36
4.5.7 Lantronix WiPort NR D-Connector...................................................................37
4.6 Appendix F - Specifications.....................................................................................38
4.7 Appendix G - Revision history................................................................................. 39
MAN-C24-0003 Issue A - May 2011
CMG-CD24S6EAM Prelims

1 Prelims

1.1 Proprietary Notice

The information in this Manual is proprietary to Guralp Systems Limited and may not be copied or distributed outside the approved recipient’s organisation without the approval of Guralp Systems Limited.
Guralp Systems Limited shall not be liable for technical or editorial errors or omissions made herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material.

1.2 Cautions and Notes

Cautions and notes are displayed and defined as follows:
Caution: A triangle or cautionary symbol indicates a chance of damage to or failure of the equipment if the caution is not heeded.
Note: A circle indicates indicates a procedural or advisory note.

1.3 Manuals and Software

All manuals and software referred to in this document are available from the Guralp Systems website: www.guralp.com unless otherwise stated.

1.4 Conventions

Throughout this manual, examples are given of command-line interactions. In these examples, a fixed-width typeface will be used:
Example of the fixed-width typeface used.
Commands that you are required to type will be shown in bold:
Example of the fixed-width, bold-face typeface.
Where data that you type may vary depending on your individual configuration, such as parameters to commands, these data are additionally shown in italics:
Example of the fixed-width, bold-faced, italic typeface.
Putting these together into a single example:
System prompt: user input with variable parameters
MAN-C24-0003 1 Issue A - May 2011
CMG-CD24S6EAM Introduction

2 Introduction

2.1 Equipment Overview

The Guralp Systems CMG-CD24S6EAM is an acquisition unit providing a guaranteed 100ms low-latency Ethernet output with full system redundancy.
Inside each acquisition unit are a pair of CMG-CD24 digitisers, a Lantronix Wi-port NR Ethernet module and a CMG-EAM communication and control module.
The CMG-CD24 is an analogue to digital converter that receives signals from connected seismometers and other devices and feeds the digital output to both the Lantronix Wi-port NR and a CMG-EAM modules. The Lantronix Wi-port NR provides a guaranteed 100ms low latency Ethernet output and the EAM provides Ethernet and serial outputs.
GPS timing is used throughout, there is an internal mass storage device and protection is provided through GPS and Network surge protectors.
On the front of the acquisition unit is an LCD display which cycles though a series of status messages such as the IP address and GPS status.
The system architecture is given in section 2.3 on page 5.

2.2 Ports

2.2.1 External Ports

There are 8 ports on the back of the acquisition unit. These are described below.
Note: Refer to Appendix E on page 31 for information on connector pinouts.
2.2.1.1 Sensor A and Sensor B
Two 26-pin connectors that provide power to the instruments and accept analogue signals from connected sensors.
MAN-C24-0003 2 Issue A - May 2011
CMG-CD24S6EAM Introduction
2.2.1.2 ETHERNET
The two 6-pin 100BASE-TX Ethernet ports support connection to a hub, switch or router. The low-latency port connects to the Lantronix WiPort NR device and the other connects to the CMG-EAM.
2.2.1.3 GPIO
The 12-pin GPIO (General Purpose Input/Output) port fulfils three functions: it provides a serial console to the EAM, which can be used for monitoring, configuration and control; it provides USB access from a PC or laptop to the internal mass storage device for data collection and it provides a number of tri-state lines which can be used to control or monitor external equipment. One application is as tamper detection lines, which can be connected to external switches and monitors as part of a secure installation.
2.2.1.4 USB
The 6-pin USB port allows connection of an external USB storage device for data collection. It is also possible to perform firmware upgrades using this port in situations where internet access is not available.
2.2.1.5 GPS
The 10-pin GPS port connects to a Guralp Systems GPS receiver which acts as a timing source for time-stamping seismic data.
2.2.1.6 PWR/DATA
The 10-pin Power/Data Out port is the power input and general-purpose serial port. It is a command line terminal running at 115,200 Baud in the default configuration but it can also be used for GCF output, PPP network connections, inbound GCF (from a digital instrument, for example), NMEA functions, TCP serial conversion, a modem answering service or as a recorder to store and forward data from any instrument with a serial output.
MAN-C24-0003 3 Issue A - May 2011
CMG-CD24S6EAM Introduction

2.2.2 Internal Ports

There are two internal ports that can be accessed by removing the top cover from the acquisition unit. These are described below.
2.2.2.1 USB
The internal USB connector allows for the installation of a suitable mass storage device. An 8Gb mass storage device is supplied as standard and can be upgraded if required.
2.2.2.2 D-connector
The 9-pin D connector provides RS232 access to the Lantronix WiPort NR device for advanced configuration (see Appendix C on page 23).
MAN-C24-0003 4 Issue A - May 2011
CMG-CD24S6EAM Introduction

2.3 System Architecture

2.3.1 Acquisition units

The primary system architecture of the acquisition units are given in the figure below. Not all input and output ports are shown, these are listed in section 2.2 on page 2.
The A and B inputs are analogue signals from attached seismometers as shown in the next section.
Configuration and control of the Lantronix Wi-port NR and a CMG-EAM modules is carried out via the web interfaces as detailed in section 3 on page
7.
Configuration and control of the digitisers is carried out via the EAM web interface. The EAM also provides power to the CD24 digitisers.
For more information on the internal devices refer to the following manuals available from the Guralp Systems website: www.guralp.com
MAN-EAM-0003 for the CMG-EAM
MAN-C24-0001 for the CD24
For more information on the Lantronix WiPort NR refer to the manufacturers documentation:
www.lantronix.com/pdf/WiPort-NR_UG.pdf
MAN-C24-0003 5 Issue A - May 2011
CMG-CD24S6EAM Introduction

2.3.2 Example sensor station

An example of a complete sensor station is shown in the figure below. The dual outputs from each CMG-5TC sensor are split as shown, each feeding an acquisition unit. In this arrangement there is a duplex system with full redundancy from the sensor to the network outputs.
The supplied instruments are standard CMG-5TC accelerometers that have been configured so that all outputs are low gain.
For more information on the instruments refer to the CMG-5TC manual (MAN-050-0004) available from the Guralp Systems website:
www.guralp.com.
MAN-C24-0003 6 Issue A - May 2011
CMG-CD24S6EAM Setting up the CMG-CD24S6EAM

3 Setting up the CMG-CD24S6EAM

3.1 Initial Installation

Note: Refer to Appendix E on page 31 for information on connector pinouts.
1. Connect the 10-pin connector on the unit to a GPS receiver using the GPS cable. Position the GPS so that it has a good view of the sky. If you do not have a view of the sky, you can operate the unit without a GPS receiver, but timing information may be inaccurate.
2. Connect the instruments to the surge arrestors.
3. Connect the surge arrestors to to the 26-pin connectors in the configuration shown in section 2.3.2 on page 6.
4. Use the power cable to connect the 10-pin Power/Data Out connector to a fused 10 – 28 V power source and wait for the system to boot. This can take up to 90 seconds. The LCD display will indicate when the process is complete.
5. The system is now fully operational and will already be producing data.
6. The acquisition units can be connected to a PC using a serial cable from the 10-pin Power/Data Out port or over a network using the Ethernet ports.
7. Data outputs from the EAM can be viewed using the Guralp Systems Scream application. See the manual MAN-SWA-0001 for information on using Scream.
Data outputs from the Lantronix WiPort NR can now be accessed using suitable software.

3.2 Connecting to the Lantronix WiPort NR

The Lantronix WiPort NR has been pre-configured so there should be no reason to change any of the settings. If however you wish to make any changes the following procedure for connecting to the Lantronix WiPort NR should be used:
1. Connect the acquisition unit to a DHCP enabled network and note the IP address.
2. Enter the IP address into the address bar of an internet browser.
MAN-C24-0003 7 Issue A - May 2011
CMG-CD24S6EAM Setting up the CMG-CD24S6EAM
3. When the Authentication Required window displays enter a User Name of 'admin'. Leave the password blank. Click on OK or press the Enter key.
4. Once the Lantronix WiPort NR home page appears you can use the menu list on the left to view and configure the settings:
5. The default settings for the device are given in Appendix A on page 13.
Caution: Making any changes to the default settings may cause the device to stop working.
6. After making any changes click OK at the bottom of each screen. On completion click on Apply Settings. This will update and reboot the module.
If you are unable to locate the device or have problems connecting, further information is given at Appendix B on page 20.

3.3 Connecting to the CMG-EAM

The CMG-EAM has been pre-configured so there should be no reason to change any of the settings. If however you wish to make any changes to the Low Latency ports the following procedure for connecting to the CMG-EAM should be used:
1. Connect the acquisition unit to a DHCP enabled network and note the IP address.
2. Enter the IP address into the address bar of an internet browser.
3. At the EAM homepage click on the User Login link in the menu on the left.
4. When the Authentication Required window displays enter a User Name of 'root' and a password of 'rootme'. Click on OK or press the Enter key.
MAN-C24-0003 8 Issue A - May 2011
CMG-CD24S6EAM Setting up the CMG-CD24S6EAM
5. Once the full menu appears on the left you have access to all the configuration and control options.
The right hand part of the widow displays the current status of the system. The links in the main menu will update the main part of the window to the selected configuration and control settings:
6. To see the settings for the low-latency ports first click on the Serial Ports link in the main menu then select Port A or Port B from the list that appears:
7. From the port A or B serial configuration page click on the Fast CD24 input settings link:
MAN-C24-0003 9 Issue A - May 2011
CMG-CD24S6EAM Setting up the CMG-CD24S6EAM
8. The 5 tabs that appear allow you to the view and change the port settings. The default settings for the ports are given in Appendix A on page 13.
Caution: Making any changes to the default settings may cause the device to stop working.
9. After making any changes click on the Submit button at the bottom of each screen.
If you are unable to locate the device or have problems connecting, further information is given in the EAM manual: MAN-EAM-0003.
Other menu items in the EAM allow for their control and configuration of the CMG-CD24 digitisers, ports and other connected devices.
Any changes made in the EAM to the CD24 settings will be reflected in the Lantronix WiPort NR data output.

3.4 Using the internal mass storage device

The acquisition unit has an internal mass storage device which is accessible via the GPIO port (see section 2.2.1.3 on page 3).
To write to the internal mass storage device:
1. Connect to the CMG-EAM as described in section 3.3 on page 8.
2. Click on the Disc Recording link in the main menu.
3. Select Internal USB storage from the Recording destination drop-down menu.
When a USB host, such as a laptop or PC, is connected to the GPIO port, internal circuitry detects the USB power and automatically connects the Flash
MAN-C24-0003 10 Issue A - May 2011
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