Guralp-systems CMG-6TD Manuel d'utilisateur

CMG-6TDOperator's guideDocument No. MAN-T60-0002Designed and manufactured byGüralp Systems Limited3 Midas House, Calleva ParkAldermaston RG7 8EA

CMG-6TD IntroductionAt this location, which can be up to 500 metres away, a low-power CMG-EAMdata module might act as an access point for the array el

CMG-6TD Updating the 6TD4. If the file opens successfully, Scream! will show the progress of theupload:Depending on the speed of the link, it may take

CMG-6TD Connector pin-outs9 Connector pin-outs9.1 Instrument connectors9.1.1 Instrument output portThis is a standard 19-pin “mil-spec”

CMG-6TD Connector pin-outs9.1.2 Instrument FIREWIRE portInstruments with the FireWire option have an additional connector for thispurpose.This is

CMG-6TD Connector pin-outs9.1.3 Instrument ETHERNET portInstruments with the Wi-Fi and Ethernet networking options have anadditional

CMG-6TD Connector pin-outs9.2 Breakout box connectors9.2.1 Breakout box data portThis is a standard 6-pin “mil-spec” plug,conforming to

CMG-6TD Connector pin-outs9.2.2 Breakout box GPS portThis is a standard 6-pin “mil-spec” socket,conforming to MIL-DTL-26482 (formerl

CMG-6TD Connector pin-outs9.2.3 Breakout box power portThis is a standard 10-pin “mil-spec” plug,conforming to MIL-DTL-26482 (former

CMG-6TD Specifications10 SpecificationsOutputs and responseSensitivity 2000 V/m/s Nominal output sensitivity2.0 × 10-9 m/s/count Standard output fo

CMG-6TD Revision history11 Revision history2014-02-03 F Clarified details of Lantronix architecture and configuration via serial port. Minor re-writ

CMG-6TD First encounters3 First encounters3.1 Unpacking and packingThe 6TD seismometer is delivered in a single transportation cas

CMG-6TD First encounters3.1.1 Serial numberThe sensor's serial number can be found on the label stuck to the top lid ofthe sensor. You should q

CMG-6TD First encountersIf this does not happen, check all connections, and ensure the powersupply is providing the correct voltage and current.7. Eac

CMG-6TD First encountersRecording settings, directories, etc., can be altered by selecting File →Setup… from the main menu and switching to the Record

CMG-6TD First encountersThe power and data distribution boxes are located at the front of the case. The package is shipped with each instrument al

CMG-6TD First encounters3. Connect the USB data cable to your PC.The internal Digi EdgePort device should be detected automatically. Ifyou need drive

CMG-6TD First encountersBe sure to allow enough time for all the data to transfer. The 6TDshould be able to transfer data at a sustained rate of aro

CMG-6TD Installing the 6TD4 Installing the 6TD4.1 Handling notesCaution: Although it has a rugged design, the 6TD is still a sensitiveinstrument, a

CMG-6TD Installing the 6TDThe connectors for the FireWire and Ethernet options are both six-pin bayonetplugs. If the labelling has become

CMG-6TD ContentsTable of Contents1 Preliminary Notes...

CMG-6TD Installing the 6TD4.3 Installation notesFor the best possible results, a seismometer should be installed on a seismicpier in a speciall

CMG-6TD Installing the 6TD4.4 Installing in vaultsYou can install a 6TD in an existing seismic vault with the followingproced

CMG-6TD Installing the 6TD5. The top panel of the 6TD includes a spirit level.Level the sensor using each of the adjustable feet of the instrument int

CMG-6TD Installing the 6TD8. Cover the instrument with thermal insulation, for example, a 5 cmexpanded polystyrene box. This will shi

CMG-6TD Installing the 6TD1. Prepare a hole of 60 – 90 cm depth to compacted subsoil, or down tothe bedrock if possible.2. On granite or other hard be

CMG-6TD Installing the 6TD(“puddle”) it whilst still liquid, to allow it to flow out and form a levelsurface, then leave to set. Follow on from step

CMG-6TD Installing the 6TDSome installations introduce a layer of ceramic tiles between a rock orconcrete plinth and the seismom

CMG-6TD Installing the 6TD4.7 Rapid installationThe 6TD is specially designed for rapid installation, and may be fullyinstalled

CMG-6TD Installing the 6TD5. Carefully insert the instrument into the hole, protected by a toughplastic bag to keep water out. Use a

CMG-6TD Installing the 6TD12. Tie the top of the package and fold it over so that water cannot get in.Leave any excess cable within the bag.13. Cover

CMG-6TD4.12 Configuring the built-in digitizer...424.13 Downloading data ove

CMG-6TD Installing the 6TD18. Attach the sensor power cable to the battery, and wrap it in anotherplastic bag. Place the bag in the hole.19. Tie the

CMG-6TD Installing the 6TD7. If the hole is relatively dry, open the bag and remove the breakout boxand cabling. Lift the instrument out by its handl

CMG-6TD Installing the 6TDThe illustration above shows serial data in blue, network data in yellow andpower connections in red.The Lantronix module ca

CMG-6TD Installing the 6TD4.10.1 Using DeviceInstaller1. Download and install the DeviceInstaller utility from the LantronixWeb site at

CMG-6TD Installing the 6TDto assign it an address. Otherwise, a random address will be chosenautomatically.Automatic random addresses all begin wit

CMG-6TD Installing the 6TDThe right-hand panel will change to show the current properties of thedevice.10. Switch to the Web Configuration tab, and cl

CMG-6TD Installing the 6TDexposed on the instrument's main connector. If you have problems connecting to the 6TD over a network, you can attach

CMG-6TD Installing the 6TD4.11 Setting up wireless networkingCMG-6TD instruments with wireless features installed use an embeddedLant

CMG-6TD Installing the 6TD7. The program will automatically look for Lantronix devices on all ofyour computer's network interfaces. If necessary

CMG-6TD Installing the 6TDconfigure.The right-hand panel will change to show the current properties of the device.11. Switch to the Web Configuration

CMG-6TD Preliminary Notes7.3.4 SET-RTC... 83

CMG-6TD Installing the 6TDTo navigate around the Web site, click on the entries in the left-handmenu. When you have made changes to the settings on a

CMG-6TD Installing the 6TDYou will need to go back to DeviceInstaller to find out the new IPaddress.6. Configure your wireless access point or route

CMG-6TD Installing the 6TD11. When you have finished setting up the Wi-Port, apply the new settingsby clicking . The Wi-Port will re-boot with then

CMG-6TD Installing the 6TD• using the graphical interface provided by Scream! (see chapter 5 onpage 49), or• over a terminal connection (see chapter

CMG-6TD Installing the 6TD3. Issue the command FLUSHThis will download all data from the 6TD that it has not alreadytransferre

CMG-6TD Installing the 6TD3. By default, all streams containing more than 100 blocks are selected forextraction. You can change which streams to

CMG-6TD Installing the 6TDDuration box. The units (minutes by default) can be selected using theadjacent drop-down menu.For data streams, if there is

CMG-6TD Installing the 6TD6. Select the streams you want to replay, and click . The diskwill appear in the left-hand pane of Scream!'s main w

CMG-6TD Installing the 6TD3. Type the IP address of the 6TD, a colon (“:”) and the output port thatyou chose when configuring the network interface.

CMG-6TD Configuration with Scream!5 Configuration with Scream!The 6TD unit contains a built-in 3-channel digitiser, which can be configuredusing Güra

CMG-6TD Preliminary Notes7.8.13 RESET-FLASH...967.8.14

CMG-6TD Configuration with Scream!Some of these options can also be altered in the Configuration dialoguewindow. For more infor

CMG-6TD Configuration with Scream!GPS Type : The digitiser needs to be able to time-stamp accurately all datathat passes through it. It sets its clo

CMG-6TD Configuration with Scream!To the right of each decimation factor menu is a grid of check-boxes. Theseboxes mark which streams of data to

CMG-6TD Configuration with Scream!system is triggered, are all selectable by the user, permitting maximumflexibility of operation

CMG-6TD Configuration with Scream!You can select which tap is tested for the trigger from the Data sourcedrop-down menu. Th

CMG-6TD Configuration with Scream!For example, setting the STA to 1 second, the LTA to 10 seconds and the Ratioto 4 would give rise to the following t

CMG-6TD Configuration with Scream!between 10% and 90%, between 20% and 90% and between 50% and 90% ofthe data’s Nyquist frequency, respectively.The po

CMG-6TD Configuration with Scream!The spectral amplitudes for the various frequency responses available areshown in the figures below.

CMG-6TD Configuration with Scream!5.1.3.3 External triggeringWhen a digitiser or digital sensor triggers, it sends the trigger i

CMG-6TD Configuration with Scream!diagnostic information, known as multiplexed (“Mux”) channels. In the 6TD,three channels are used to report the sen

CMG-6TD Preliminary Notes1 Preliminary Notes1.1 Proprietary NoticeThe information in this document is proprietary to Güralp Systems Limitedand may b

CMG-6TD Configuration with Scream!The baud rate you choose must satisfy two conditions:• It must be high enough to allow all the tra

CMG-6TD Configuration with Scream!5.2 Controlling the instrumentTo control a digitiser whilst it is running, either right-click on the digitiser&apos

CMG-6TD Configuration with Scream!5.2.2 TriggeringThe Triggering pane is very similar to the corresponding pane of theConfigurat

CMG-6TD Configuration with Scream!The Duration (minutes) box tells the digitiser how long to provide thecalibration signal bef

CMG-6TD Configuration with Scream!Separate from these modes are the two buffering modes, which tell the unitwhat to do when its Flash memory becomes f

CMG-6TD Configuration with Scream!You can tell Scream! to download new data automatically whenever itreceives a heartbeat message

CMG-6TD Configuration with Scream!If you expect breaks in communication between the instrument and its clientto last more than 256 blocks, or if you w

CMG-6TD Configuration with Scream!If you expect breaks in communication between the instrument and its clientto last more than 256 blocks, or if you w

CMG-6TD Configuration with Scream!5.2.5.5 ADAPTIVESyntax: ADAPTIVEInstructs the 6TD to transmit current blocks to clients if possible, but to storeall

CMG-6TD Configuration with Scream!5.2.6 Buffering mode commands5.2.6.1 RE-USE / RECYCLESyntax: RE-USE orSyntax: RECYCLEInstructs the 6TD to carry on u

CMG-6TD Introduction2 IntroductionThe CMG-6TD is an ultra-lightweight digitalthree-axis seismometer consisting of threesensors in a sealed case,

CMG-6TD Configuration with Scream!During boot-up, each unit reports its model type, firmware revision number,its System ID and serial number. This in

CMG-6TD Configuration with Scream!time at the end of this process. The re-synchronisation will result in adiscontinuity in th

CMG-6TD Calibrating the 6TD6 Calibrating the 6TD6.1 The calibration packAll Güralp sensors are fully calibrated before they leave the factory. Bot

CMG-6TD Calibrating the 6TDmechanics and electronics can be disregarded. This relationship, given interms of the Laplace variable s, takes the form[

CMG-6TD Calibrating the 6TD6.3 Frequency response curvesThe frequency response of each component of the 6TD is described in thenormalised amplitude a

CMG-6TD Calibrating the 6TDThe server will reply with the calibration documentation in Word format.The body of your e-mail will be ignored.6.5 Cal

CMG-6TD Calibrating the 6TD3. Open a Waveview window on the calibration signal and the returnedstreams by holding while selecting each o

CMG-6TD Calibrating the 6TD8. The script will ask you to fill in sensor calibration parameters for eachcomponent you have selected.Most data can be fo

CMG-6TD Calibrating the 6TDsample rate; although the same information is present in higher-ratestreams, they also include a large amount of high-frequ

CMG-6TD Calibrating the 6TD6.6 The coil constantThe feedback coil constant K is measured at the time of manufacture, andprinted on the calibration sh

CMG-6TD Introduction2.1 State of health informationThe 6TD constantly monitors the status of the GPS and timing systems,outputt

CMG-6TD Command-line interface7 Command-line interfaceYou can connect to the internal software of the 6TD over its output serial portand communicate

CMG-6TD Command-line interfaceIf a command completes with nothing remaining on the stack, the digitiserwill show the prompt ok. Otherwise,

CMG-6TD Command-line interfaceThe serial number you supply must contain 4 alphanumeric (0 – 9, A – Z)characters as shown. As for the sys

CMG-6TD Command-line interfaceIf Scream finds calibration information in the Info Block, it will use it tocalibrate traces in WaveView window

CMG-6TD Command-line interface7.3.2 HR-CYCLESyntax: interval HR-CYCLESets the interval between GPS fixes. Under normal operation, the system willpowe

CMG-6TD Command-line interfaceThis setting will be overridden when the GPS system next synchronizes theclock.7.3.6 TIME?Syntax: TIME?Displays the curr

CMG-6TD Command-line interfaceNote: This command is in the extended dictionary; to use it, firstissue the command ok-1 and finish with [seal].If the

CMG-6TD Command-line interfaceThe ADC within the unit outputs data at 2,000 samples per second, so tapscan have sample rates between 1 and 1,000 sampl

CMG-6TD Command-line interface7.4.3 COMPRESSIONSyntax: bits size COMPRESSION or NORMAL COMPRESSIONSets the maximum amount of compression t

CMG-6TD Command-line interfacecomponents is an integer below 16, whose binary bits represent the Z (1), N(2), E (4) and auxiliary (8) components respe

CMG-6TD IntroductionFor temporary deployments, instruments can beburied in shallow pits with only the antenna aboveground. You can the

CMG-6TD Command-line interfaceZ-secs, N-secs, and E-secs are the time periods over which to calculatethe average for the Z, N, and E components resp

CMG-6TD Command-line interface7.5.8 POST-TRIGSyntax: time POST-TRIGSets the post-trigger recording time. time is the number of seconds of data tooutp

CMG-6TD Command-line interfacecomponent specifies which component is to be calibrated, one of Z, N/S, orE/W.freq-or-period and unit together dete

CMG-6TD Command-line interface7.6.4 MINUTESyntax: duration MINUTESets for how long the next SINEWAVE calibration signal will be injected, or theperiod

CMG-6TD Command-line interface7.7.2 MASSES?Syntax: MASSES?Displays the current, instantaneous position of the three sensor masses, incounts (range ±8,

CMG-6TD Command-line interfaceBefore DOWNLOAD will work, it needs to know• the desired time period, which is specified with ALL-FLASH,A

CMG-6TD Command-line interfaceWhen a TO-TIME download completes, the read pointer will be moved to theend of the downloaded data. The old position of

CMG-6TD Command-line interface7.8.9 STATUS-ONLYSyntax: STATUS-ONLYInstructs the 6TD to transmit only status streams (text streams, normally withstream

CMG-6TD Command-line interface7.8.14 ERASEFILESyntax: ERASEFILE (interactive)Clears the entire Flash memory. When you issue this command, the 6TD wil

CMG-6TD Updating the 6TD8 Updating the 6TDThe firmware of the 6TD can be updated remotely over its output port.In Scream!’s main window, right-click