Summary of Contents for GeoSIG GSR-12
- Page 1 GSR-12 / 16 / 18 AS-12 / 16 GCR-12 / 16 User Manual GeoSIG Ltd, Ahornweg 5a , 5504 Othmarsingen, Switzerland Phone: + 41 44 810 2150, Fax: + 41 44 810 2350 info@geosig.com, www.geosig.com...
- Page 2 Copyright Notice No part of this document may be reproduced without the prior written consent of GeoSIG Ltd. The software described in this document is furnished under a license and may only be used or copied in accordance with the terms of such a license.
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Page 3: Table Of Contents
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page iii Table of Contents Applicability of This Manual ....................v Warnings and Safety ......................v Symbols and Abbreviations ....................vi 1. Introduction........................1 2. Incoming Inspection......................1 2.1. - Page 4 GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page iv GSR / GCR / AS User Manual 5.1.1.1. GSR / AS Instruments ......................14 5.1.1.2. GCR Instruments ........................15 5.2. Triggering ............................. 15 5.2.1. Internal Triggering ......................... 16 5.2.1.1. Threshold Trigger ........................16 5.2.1.2.
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Page 5: Applicability Of This Manual
Instrument and can be dangerous. Moreover untrained access may lead to serious damage to the Instrument, as well as may void the warranty. Especially the Lid cover should never be removed without first contacting to GeoSIG or your local representative. -
Page 6: Symbols And Abbreviations
- Do not expose the memory card to high temperatures - Do not expose the memory card to magnetic fields or potential static electricity discharges Symbols and Abbreviations Instrument GSR-12/16/18 or GCR-12/16 or AS-12/16 GSR-12/16/18 GCR-12/16 AS-12/16 CMOS Complementary Metal Oxide Semiconductor... -
Page 7: Introduction
The GCR-12/16 and GSR-12/16/18 are 12, 16 or 18 Bit seismic data acquisition systems. The AS- 12/16 is a 12 or 16 Bit seismic switch with the same specifications as the GSR or GCR instruments with alarm trigger output but without recording facility. -
Page 8: Damage During Shipment
GeoSIG. 50 % of freight charges on shipments of warranty repairs or replacements will be borne by GeoSIG (normally one way freight). -
Page 9: Connectors
Some connectors support several optional hardware, which are illustrated in Figure 3. Optional connections may require third party devices and/or services, which may not typically be provided by GeoSIG. The standard function of each connector is as follows: SENSOR (Optional) - Page 10 • GCR 12 / 16 recorders: 2.5 VDC ± 2.5 VDC • AS-12 / 16 and GSR-12 / 16 / 18 recorders: standard: 0 ± 10 VDC (20 Vpp) or 0 ± 2.5 VDC (5 Vpp) differential optional: 0 ±...
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Page 11: Opening The Housing
Instrument and can be dangerous. Moreover untrained access may lead to serious damage to the Instrument, as well as may void the warranty. Especially the Lid cover should never be removed without first contacting to GeoSIG or your local representative. -
Page 12: External Dc Power Supply
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 6 GSR / GCR / AS User Manual 260mm Fixation Holes Base Cover Main Switch Lid Cover Figure 4. Inside of the Instrument The battery charger is just a charger. It is not a battery eliminator. DO NOT operate the unit with only the charger attached. -
Page 13: Test Data Sheet
The internal memory module can be expanded up to 2 Mbytes on GCR-12 / 16 and up to 128 Mbytes on GSR-12 / 16 / 18. No memory is implemented in AS-12 / 16, thus no upgrade is possible. Removable Memory Card GSR instruments have a special “A”... -
Page 14: Installation, Configuration And Operation
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 8 GSR / GCR / AS User Manual 4. Installation, Configuration and Operation This section lists the procedures involved in installation, configuration and operation the Instrument. The procedures will be outlined as steps to be performed in the field or in house prior to deploying the instrument in the field. -
Page 15: Installation
Although the Instrument contains over voltage protection, it may sometimes be necessary to use additional surge protectors for the equipment. Contact GeoSIG or your local representative for more information. 4.2.1. Supply Voltage Selection AC powered Instrument only. -
Page 16: Optional Interconnection
Further details on Interconnected Recording Networks and their installation are given in the GeoSIG technical note, “TN # 85: Strong Motion Instrumentation Networks” as well as the "Appendix G" of this Manual. Please refer to these documents to be able to properly deploy such a network. -
Page 17: First Start
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 11 4.3. First Start 1. Connect the power cable to the POWER connector. 2. The green AC LED indicator must turn on, If not: ▪ In case of AC powered Instrument: Disconnect the power cable from the Instrument. -
Page 18: Sample Oriented Mode (Som)
GSR / GCR / AS User Manual • Packet Oriented Mode (POM): After logout, every second a one-second buffer is sent to the communication line (GSBU – GeoSIG / Bergen University – protocol). For recording and analysing on the PC, besides GeoDAS, data acquisition software SEISLOG, and data analysing software SEISAN can also be used. -
Page 19: Packet Oriented Mode (Pom)
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 13 Table 2. Possible baud rates with serial data stream Communication speed POM, 3 channels 100 SPS 200 SPS 250 SPS SOM, 3 channels 100 SPS 200 SPS 250 SPS 4.4.1.2. -
Page 20: Digital Signal Filtering
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 14 GSR / GCR / AS User Manual • AS-12 / 16 and GSR-12 / 16 /18 recorders: standard: 0 ± 10 VDC (20 Vpp) or 0 ± 2.5 VDC (5 Vpp) differential optional: 0 ±... -
Page 21: Gcr Instruments
AD conversion and the signal processing is the same for all the Instruments with the difference that the resolution of the sampled data is either 12 or 16 bits for GSR-12 / 16 an AS-12 / 16 5.1.1.2. GCR Instruments The amplified and filtered analog signals are sampled at a rate of 1000 SPS per channel and converted by a successive-approximation AD converter to 16 Bit digital data values. -
Page 22: Internal Triggering
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 16 GSR / GCR / AS User Manual Trigger Pre-Event Event Post-Event Time Figure 5. Typical Recorded Data for 1 Channel If the user sets up trigger parameters that are continually met by the environment, the system will trigger continuously. -
Page 23: Time Triggering
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 17 If the LTA is allowed to update during the event, and the event is long relative to the length of the LTA period, then the instrument will determine that the event is actually part of the background noise and the trigger condition will terminate. - Page 24 GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 18 GSR / GCR / AS User Manual The average time for the STA and LTA may be set as follows: • STA 0.1 to 10 seconds • LTA 1 to 100 seconds The LTA may not be set smaller than the STA.
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Page 25: Micro Event Detection
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 19 5.3.2.1. Micro Event Detection For this application, the unit should trigger on both low level and short events. Consequently, the STA/LTA ratio is set low and the STA averaging time is set short. -
Page 26: Recording Capacity
02.04.05 and higher have a build-in intensity scale. Earlier firmware versions as well as GSR-12 / 16 Instruments had an Intensity Scale, which is not anymore supported. This information is given for the completeness in defining the Intensity Scale for GSR-18. -
Page 27: Gps Option
It is strongly recommended to clear the Warning and Error flags before running any Test. Please refer to the GeoDAS manual to achieve this. Should a specific Warning or Error occur frequently, contact GeoSIG or your local representative. 6.1.1. Analog If "Analog"... -
Page 28: Hardware
Check the sensor cable and its connectors. ▪ The analog filter of the recorder unit may be defective, contact GeoSIG or your local representative. The ADC Resolution test monitors every value read from the AD Converter during system test. If any value is outside the expected range, a Warning will appear. -
Page 29: Real Time Clock Rtc
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 23 The EE_RAM Checksum test reads the Instrument parameters stored within a copy of the EEPROM and calculates its Checksum. Is a working copy of the internal EEPROM, used during run-time to increase speed and reliability. -
Page 30: Battery
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 24 GSR / GCR / AS User Manual The RTC Memory test writes to and reads from the memory of the Real Time Clock. By checking the consistency of the data read back, it indirectly checks the presence, operation and connections of the Real Time Clock. -
Page 31: Maintenance
▪ Run the Self Test again. If the Warning flag remains set some data memory chips may need to be replaced. Contact GeoSIG or your local representative. ▪ If you are using a removable Memory Card replace, it with a new card. - Page 32 GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. Page 26 GSR / GCR / AS User Manual • Check the function of the alarm relays (optional) annually . Therefore use the Test Low Alarm and Test High Alarm buttons in GeoDAS. • The voltage of the main battery and the charging voltage of the charger shall be measured annually .
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Page 33: Index
GS_GSR_GCR_UserManual_V21.doc / 18.09.2009 GeoSIG Ltd. GSR / GCR / AS User Manual Page 27 Index analog filter ......15 ID label ........2 Self Test ......21 Analog Response ..... 22 Installation ......9 serial number......2 battery........5 LCD ........2 Serial Output......11...