Minicom Advanced Systems CMG-DCM manual Usage, General notes, DCM as a data store

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Operator's guide

3 Usage

The DCM can be integrated with any system where seismic data needs to be collected, collated, or converted from one form into another. It is designed to operate as transparently as possible, and once connected and configured for a particular role in a system it should not require further maintenance.

The rest of this chapter gives detailed installation and usage notes for several common DCM installations. Between them, they highlight many important features of the DCM. For full configuration information, please refer to Chapter 4, “Configuration options”.

3.1 General notes

Stand-alone DCM modules can be supplied with a touch-screen and minibrowser as an option. This allows you to perform configuration tasks on- site. However, the touch-screen imposes some environmental restrictions on the unit.

For all other DCM units, you will need console or network access to the DCM to configure it for your installation. This is especially important if the DCM is not to be part of a TCP/IP network whilst in use. As supplied, the DATA OUT port runs the getty service, which you can use to access the console of the DCM over a serial link. Alternatively, you can temporarily connect a computer to the NETWORK port. It is recommended that you keep a connection to the DCM available for maintenance and troubleshooting, even if the link is too slow for transferring data.

3.2 The DCM as a data store

The simplest way to use a DCM is as a storage medium for digital data.

1.Connect the DCM to a digitizer or digital sensor.

2.Connect the DATA OUT port to a source of 12 V DC power.

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Contents CMG-DCM Table of Contents December Inside the DCM Introduction CMG-DCM Inside the DCM Network services Serial port servicesSee .4, Connecting to a local network for full details Installing the CMG-DCM Power supplyOverview Connecting over a serial link Connecting to a single computer192.168.0.x Connecting over EthernetConnecting over USB Using an internal modemConnecting to a local network Gcfgdbset option-namenew-value Connecting to the Internet Wi-FiSetting up the CMG-DCM Connecting digitizers and external hardwareWeb setup Setting up digitizers Using Scream Usage General notesDCM as a data store Gnblocks port-number Page CMG-DCM DCM as a GCF data source Accessing the DCM command line through gcfout Sensor arrays DCM as a network data hub Communicating with digitizers Configuring digitizers Data storage and retrieval Using miniSEED format Real-time data transmission CD1.0 and CD1.1 Troubleshooting DCM installations Cannot see the DCMs Web site over Http or Https Cannot connect to the DCMs Scream! serverCannot Gcfping the DCMs Scream! server DCM is not receiving any data streams Can Gcfping the DCMs Scream! server, but no data appearsDCM is receiving streams, but they do not contain any data Use the Serial port configuration → port name Web page, or143032 up 34 min, load average 1.24, 1.32 General Configuration optionsDisk CMG-DCM Serial port configuration CMG-DCM Page Ethernet port Network configurationStatic routes DNS setup Incoming mail setup Outgoing mail setup Remote access Administrators PPP Mgetty Scream Data transferAutoDRM Scream! ClientHttp server Http clientCD1.0 CD1.1 CD1.1 subframe configuration DSS Server configuration Seed Page CMG-DCM Data Viewer ActionsStream list Icon barDigitizer Setup General digitizer settings Digitizer output control CMG-DCM Trigger criteria CMG-DCM Tap # Rate Bandwidth Samples/s Auxiliary Mux channels Sensor mass control Partition, and format disk Disk toolsCheck disk filesystem Flush flashDisk files CameraRecent Log Entries Summary Network configurationData Out Port, Serial Port A, Serial Port B DNS configurationFlash Status Tamper linesDisk Status Software Versions Inside the DCM File systems CMG-DCM Command line tools Configuration Digitizer console access Data flow MonitoringDigitizer status Tamper lines Over the Internet Updating the DCMFrom the hard disk Removing support packagesFirmware Libgconfigdb Appendix A.1 Modular DCM units Appendix a Connector pinoutsPort a and B Data OUT portNetwork connector USB connectorDM/AM module output Appendix A.2 Integrated DCM unitsAppendix B.1 Sensor response codes Appendix B Sensor and digitizer typesDigitizer Appendix B.2 Digitizer type codes