Minicom Advanced Systems CMG-DCM manual Cmg-Dcm

Page 64

CMG-DCM

a case-sensitive code for the sensor type (see Appendix B.2, “Digitizer type codes”);

a case-sensitive code for the digitizer type (see Appendix B.2, “Digitizer type codes”);

the sensitivity of the sensor, prefixed with a V for a sensitivity in V/m/s, or A for a sensitivity in V/m/s2 (in the example, around 1 V/m/s). Note that there is no colon between the sensitivity and its unit.

The sensitivity is given on the sensor's calibration sheet. The sensitivity of a sensor integrated with a digitizer is quoted as a single-endedsensitivity, whilst stand-alone digitizers are provided with their differential sensitivity. A differential sensitivity is quoted as, e.g. 2 × 3000 V/m/s. In this file, you should use the doubled value, i.e. 6000 V/m/s, for a stand-alone digitizer. For integrated digitizers, you should use the single-ended value quoted.

the sensitivity of the digitizer, in volts per count (here 1.6 × 10-7V/count = 0.16 μV/count). This is given on the digitizer's calibration sheet.

the decimation sequence code. This is an integer between 0 and 239 which describes the sequence of filters in use by the digitizer. If you have a recent digitizer (with firmware newer than version 0.91) this information is included in the incoming GCF streams, so you can leave this field blank. The codes corresponding to each possible decimation sequence are available from the support section of the Gü ralp Systems Web-site.

When you have finished editing the file, clicking Save changes will write the changes to disk. The changes will not take effect, however, until the SEED service is restarted. You can restart the SEED volume generator by clicking Restart SEED recorder.

64

Issue A

Image 64
Contents CMG-DCM Table of Contents December Inside the DCM Introduction CMG-DCM Inside the DCM Serial port services Network servicesSee .4, Connecting to a local network for full details Power supply Installing the CMG-DCMOverview Connecting to a single computer Connecting over a serial linkConnecting over Ethernet 192.168.0.xUsing an internal modem Connecting over USBConnecting to a local network Gcfgdbset option-namenew-value Wi-Fi Connecting to the InternetConnecting digitizers and external hardware Setting up the CMG-DCMWeb setup Setting up digitizers Using Scream General notes UsageDCM 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 connect to the DCMs Scream! server Cannot see the DCMs Web site over Http or HttpsCannot Gcfping the DCMs Scream! server Can Gcfping the DCMs Scream! server, but no data appears DCM is not receiving any data streamsUse the Serial port configuration → port name Web page, or DCM is receiving streams, but they do not contain any data143032 up 34 min, load average 1.24, 1.32 Configuration options GeneralDisk CMG-DCM Serial port configuration CMG-DCM Page Network configuration Ethernet portStatic routes DNS setup Incoming mail setup Outgoing mail setup Remote access Administrators PPP Mgetty Data transfer ScreamScream! Client AutoDRMHttp client Http serverCD1.0 CD1.1 CD1.1 subframe configuration DSS Server configuration Seed Page CMG-DCM Actions Data ViewerIcon bar Stream listDigitizer Setup General digitizer settings Digitizer output control CMG-DCM Trigger criteria CMG-DCM Tap # Rate Bandwidth Samples/s Auxiliary Mux channels Sensor mass control Disk tools Partition, and format diskCheck disk filesystem Flush flashCamera Disk filesRecent Log Entries Network configuration SummaryDNS configuration Data Out Port, Serial Port A, Serial Port BTamper lines Flash StatusDisk Status Software Versions Inside the DCM File systems CMG-DCM Command line tools Configuration Digitizer console access Monitoring Data flowDigitizer status Tamper lines Updating the DCM Over the InternetFrom the hard disk Removing support packagesFirmware Libgconfigdb Appendix a Connector pinouts Appendix A.1 Modular DCM unitsPort a and B Data OUT portUSB connector Network connectorAppendix A.2 Integrated DCM units DM/AM module outputAppendix B Sensor and digitizer types Appendix B.1 Sensor response codesAppendix B.2 Digitizer type codes Digitizer