Guralp Systems CMG-EAM-R User manual

CMG-
EAM-R
Quick-Start
Guide
Part No. MSH-EAM-
0004
Designed and
manufactured by
Güra p Systems
Limited
3 Midas House,
Ca eva Park
A dermaston RG7
8EA
Eng and
Proprietary Notice: The
information in this manua is
proprietary to Güra p Systems
Limited and may not be copied
or distributed outside the
approved recipient's
organisation without the
approva of Güra p Systems
Limited. Güra p Systems
Limited sha not be iab e for
technica or editoria errors or
omissions made herein, nor for
incidenta or consequentia
damages resu ting from the

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furnishing, performance, or usage of this materia .
Issue A February 2012
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Error: Reference source not found Introduction
Table of Contents
1 Introduction............................................................................................................... 3
2 Getting started........................................................................................................... 4
2.1 Configuring networking.....................................................................................4
2.1.1 DHCP...........................................................................................................4
2.1.2 APIPA........................................................................................................... 4
2.1.3 Static addressing.........................................................................................4
2.1.4 Discovering dynamica y a ocated addresses............................................5
2.2 Hook-up diagrams..............................................................................................7
2.2.1 Mu tip e CD24-R8s with GPS synchronisation..........................................7
2.2.2 Mu tip e CD24-R8s with GPS synchronisation..........................................8
2.3 Operation............................................................................................................ 9
2.3.1 The LCD disp ay..........................................................................................9
2.3.2 The FLUSH button....................................................................................10
2.3.3 Connectors.................................................................................................10
3 Connector pin outs..................................................................................................12
3.1 Front pane ........................................................................................................ 12
3.1.1 Conso e...................................................................................................... 12
3.2 Rear pane .........................................................................................................13
3.2.1 Power......................................................................................................... 13
3.2.2 Time...........................................................................................................13
3.2.3 Data............................................................................................................14
3.2.4 Ethernet.....................................................................................................14
3.2.5 USB............................................................................................................ 15
4 Revision history.......................................................................................................16
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Error: Reference source not found Introduction
1 Introduction
The CMG-EAM-R is a rack-mounted data acquisition, processing, storage and
communications unit based on the CMG-EAM embedded acquisition modu e.
The unit can be configured and contro ed using a web-based interface.
Security and fire-wa features support direct connection to the internet for
remote operation.
The EAM-R is particu ar y we suited for use with mu tip e CMG-CD24-R8
rack-mounted digitiser but can be used in a wide variety of other app ications.
The EAM-R houses an Inte PXA270 32-bit processor running at 312MHz with
64Mb of RAM and 512Mb of on-board f ash. The unit is equipped with
100BASE-TX Ethernet, three seria ports and seven USB ports.
The EAM-R runs the open-source Linux operating system and Güra p
Systems' P atinum firmware, providing:
•Data acquisition:
◦Data can be acquired in various formats via USB, Ethernet or seria
ports;
•Recording:
◦Data can be recorded to a mass storage device or network-attached
storage in a variety of standard formats;
•Data forwarding:
◦GCF output via seria port or Scream Server (TCP/UDP);
◦SEED ink output over TCP/IP;
◦CD1.1 output;
◦Güra p Data Interconnect (GDI) can be used for interchanging data
between CMG-EAM-Rs, CMG-EAMs and CMG-NAMs;
•Processing:
◦The EAM-R has sophisticated data-processing capabi ities inc uding
triggering.
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Error: Reference source not found Getting started
2 Getting started
The fo owing steps wi enab e you to connect and start using your CMG-
EAM-R.
2.1 Configuring net orking
There are three ways in which your EAM-R can acquire a network address,
DHCP, APIPA or static configuration.
2.1.1 DHCP
If the EAM-R is connected to a network which inc udes a DHCP (Dynamic
Host Configuration Protoco ) server, the EAM-R wi automatica y obtain an
IP address from the server. You can either consu t the DHCP server's og fi e to
determine which address has been a ocated or try one of the techniques
described in section 2.1.4 on page 6.
2.1.2 APIPA
Many modern systems support Automatic Private IP Address (APIPA)
a ocation (a so known as “ ink- oca addressing”). On networks without a
DHCP server, computers can negotiate addresses in the range 169.254.0.0
to 169.254.254.255 (or in the b ock fe80::/64 for IPv6 systems). This
scheme wi , for examp e, a ocate addresses to both systems if the EAM-R is
connected direct y to a aptop running Windows. To determine which address
has been a ocated, use one of the techniques described in section 2.1.4 on
page 6.
2.1.3 Static addressing
You can configure your EAM-R to use a static IP address by connecting a PC
running a termina emu ator (such as PuTTY, HyperTerm or minicom) to the
conso e port on the front pane . Configure your emu ator for a ine speed of
38,400 with no hardware or software f ow contro .
Once connected, you wi be presented with a ogin prompt. Enter the user-
name root and the password guralp3 when prompted. The password wi
not be disp ayed as you type it.
Once ogged in, issue the fo owing command:
eam999 ~ # ip addr add 192.168.0.1/24 dev eth0
rep acing 192.168.0.1/24 with the desired IP address. It must be specified in
CIDR format where the actua address is fo owed by the number of bits of the
network mask. The above examp e uses 192.168.0.1 with a netmask of
255.255.255.0 (24 bits of network address). A PC connected to this
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network cou d communicate with the acquisition modu e if it was configured
to use an IP address of (for examp e) 192.168.0.2 with a matching netmask
of 255.255.255.0.
Note: IP addresses assigned using this method wi be ost if
the unit is rebooted. To permanent y assign an IP address,
refer to the P atinum manua , MAN-EAM-0003, avai ab e
from www.gura p.com
If you wish to connect to the EAM-R from a PC, they must either both be on
the same subnet (usua y the first three numbers of the IP address) or be ab e
to connect to each other via routers.
In the atter case, you wi need to te the acquisition modu e the address of
its defau t router. P ease refer to the P atinum manua , MAN-EAM-0003, for
more detai s.
2.1.4 Discovering dynamically allocated addresses
There are three ways to discover a dynamica y a ocated address. You can
read it from the unit's LCD disp ay, you can connect to the seria port and
enquire or you can use a broadcast address in Scream.
2.1.4.1 Using the serial port
To use the seria port, connect a termina emu ator (as described in section
2.1.3 on page 5 and issue the command:
ip addr show dev eth0
You wi see output ike
eam999 ~ # ip addr show dev eth0
2: eth0: <BROADCAST,M LTICAST, P,LOWER_ P> mtu 1500 qdisc
pfifo_fast qlen 1000
link/ether 00:50:c2:40:54:75 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.101/24 brd 192.168.1.255 scope global eth0
inet6 fe80:250:c2ff:fe40:5475/64 scope link
valid_lft forever preferred_lft forever
eam999 ~ #
The first ine of the output shou d contain the word P, confirming that the
adaptor has been enab ed. The IP address that has been assigned is shown on
the ine beginning inet - in this case, it is 192.168.0.101 (with a netmask
of 24-bits indicated by /24).
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2.1.4.2 Using Scream
Scream is a software package for Seismometer Configuration, Rea -time
Acquisition and Monitoring, deve oped by Güra p Systems. To obtain a free
copy of Scream, p ease send an emai to scream@gura p.com, describing
brief y your equipment and the organisation for whom you are working. For
more information , p ease see www.gura p.com/scream.
To determine the IP address of your EAM-R(s), start Scream and open the
network contro window ( + ). Key to add a new UDP server and
enter the address 255.255.255.255 – this is a broadcast address that wi be
recognised by a hosts on the network. The new server wi appear in the
Servers ist: c ick on it once to high ight it and then key + . This
sends a “GCFPING” packet to which a GCF servers wi rep y. The address of
your EAM-R wi appear in the contro pane as shown be ow:
In this case, a sing e acknow edgement response (GCFACKN) was received
and it came from the address 192.168.42.32 so this is the address of the
EAM-R. If there are more than one EAM-R (or other GCF servers) on the
network, mu tip e GCFACKN packets wi be reported.
2.2 Hook-up diagrams
The hook-up diagrams on the fo owing pages show the most common usage
scenarios.
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2.2.1 Multiple CD24-R8s ith GPS synchronisation
The diagram be ow i ustrates how to connect an EAM-R to a rack of CMG-
CD24-R8 digitisers when using a GSL GPS receiver for synchronisation. The
EAM-R needs on y Power, Ethernet and input (USB) connections to start
co ecting and forwarding data.
The CMG-CD24-R8 is a rack-mounted, 8-channe digitiser designed for use
with the EAM-R. For further information about the CD24-R8, p ease see its
manua , MAN-C24-0004, which can be down oaded from
www.gura p.com/documents/MAN-C24-0004.pdf.
Mu tip e CD24-R8s can be connected to a sing e EAM-R using USB cab es, as
shown.
The GPS receiver shou d be connected to on y one CD24-R8. A GPS “daisy-
chain” cab e is used to pass timing information to other units in the rack. The
EAM-R is preconfigured to receive its timing information from the digitisers.
The EAM-R and CD24-R8s are supp ied with separate power supp ies but, if a
suitab e DC power source is avai ab e, a “daisy-chain” power supp y cab e can
be made up to run a the units from a sing e supp y.
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2.2.2 Multiple CD24-R8s ith GPS synchronisation
The diagram be ow i ustrates how to connect an EAM-R to a rack of CMG-
CD24-R8 digitisers when on y NTP (internet Network Time Protoco )
synchronisation is avai ab e. It must be stressed that GPS synchronisation is
significant y more accurate than NTP.
In this arrangement, a specia cab e, CAS-DCM-0059, is used to connect the
TIME output of the EAM-R to any one of the GPS inputs. NTP is received
from the internet (or from a oca NTP server) via the ETHERNET connector.
A other connections are as described in the previous section.
The EAM-R needs to be configured to accept NTP synchronisation and to
output NMEA (GPS timing signa s) from the TIME connector. For further
detai s, p ease see the “Digitiser synchronisation” chapter of the P atinum
manua (MAN-EAM-0003), where the TIME connector is referred to as “Port
C”. The P atinum manua is avai ab e for down oad from
www.gura p.com/documents/MAN-EAM-0003.pdf.
2.3 Operation
The EAM-R runs P atinum firmware which has been deve oped specifica y
for the Güra p Systems range of data acquisition products, inc uding the
CMG-EAM and CMG-NAM. P atinum inc udes features for data co ection,
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processing, storage, forwarding and protoco conversion and we as digitiser
and instrument configuration and contro faci ities.
Un ess ordered otherwise, the EAM-R is supp ied pre-configured to:
•acquire a DHCP or APIPA network address;
•co ect GCF data from a seven USB connectors (this is, in fact, entire y
automatic and not configurab e);
•synchronise its own c ock to connected digitisers; and
•provide a Scream server on the defau t network port (1567), forwarding
a co ected data;
In many situations, this means that you can start using your EAM-R
immediate y with no further configuration.
There are, however, many other features of P atinum firmware on the EAM-R
which you may wish to exp ore and enab e. Fu detai s are provided in the
P atinum manua , MAN-EAM-0003, which shou d be read in conjunction
with this document and is avai ab e for down oad from
www.gura p.com/documents/MAN-EAM-0003.pdf.
The rest of this section discusses features of the EAM-R which differ from or
are not mentioned in the P atinum manua .
2.3.1 The LCD display
The front-pane LCD disp ay is not mentioned in the P atinum manua : it
scro s through severa pages of status information, showing the same content
as the “System status” page of the web interface, as we as the current IP
address.
2.3.2 The FLUSH button
The “FLUSH” button on the front pane is not mentioned in the P atinum
manua . Pressing this button has exact y the same effect as c icking the
“F ush to storage” button in the “Too s” “Storage and recording” page of the→
web interface, causing recorded data to be f ushed from the ring-buffers to the
tertiary (or externa ) storage device. USB storage devices, such as USB
“thumb drives” may be connected to any of the USB ports for this purpose:
see the fo owing section for more detai s.
2.3.3 Connectors
2.3.3.1 Console
The CONSOLE connector is not configurab e via P atinum: it is permanent y
configured as a termina running at 38,400 Baud. You can access the
command ine of the EAM-R by connecting a termina emu ator to this port.
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