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GeoSIG Ltd.

GS_GSR_GCR_UserManual_V21.doc / 18.09.2009

Page vi

GSR / GCR / AS User Manual

to the internal clock and to the memory module for a total duration of one year. During
normal operation, power comes from the main battery and the back-up battery life is at
least 5 years.

In case of using removable memory cards, in order to prevent data loss:

- Never remove the memory card during operation

- 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 GSR-12/16/18
GCR GCR-12/16
AS AS-12/16
CMOS

Complementary Metal Oxide Semiconductor

SRAM

Static Random Access Memory

EEPROM Electrically

Erasable

Programmable Read-Only Memory

PC Card

Personal Computer Memory Card International Association (PCMCIA)

CF Memory Card

CompactFlash Memory Card

VDC DC

Voltage

VAC AC

Voltage

STA

Short Term Average

LTA

Long Term Average

PC IBM

compatible Personal Computer

SPS Samples

Per

Second

AC Active

Charge

SOM

ample

riented Serial Output Data

ode

POM

acket

riented Serial Output Data

ode

SEISLOG Please

see

http://www.geo.uib.no/Seismologi/software/software.html

SEISAN Please

see

http://www.geo.uib.no/Seismologi/software/software.html

The full-scale input range of the instrument

DV Digital

Values

AIV Analog

Input

Voltages

Vpp

Volts peak to peak

RMS

Root Mean Square Decibels

Содержание AS-12

Страница 1: ...GeoSIG Ltd Ahornweg 5a 5504 Othmarsingen Switzerland Phone 41 44 810 2150 Fax 41 44 810 2350 info geosig com www geosig com GSR 12 16 18 AS 12 16 GCR 12 16 User Manual...

Страница 2: ...ty scale for GSR 18 08 04 2004 Adjustments concerning the new communication programs PC 12 05 2004 Formula format of Signal Conditioning and Triggering corrected TB 10 06 2004 Preliminary formatting a...

Страница 3: ...3 11 Options and Accessories 7 3 12 Storage 7 4 Installation Configuration and Operation 8 4 1 Site Selection 8 4 1 1 Environmental Considerations 8 4 1 2 Power Supply Considerations 8 4 2 Installatio...

Страница 4: ...Triggering Guidelines 17 5 3 1 Threshold Trigger 17 5 3 2 STA LTA Ratio Trigger 17 5 3 2 1 Micro Event Detection 19 5 3 2 2 Local Earthquake Detection 19 5 3 2 3 Strong Motion Detection 19 5 4 Data Re...

Страница 5: ...d never be removed without first contacting to GeoSIG or your local representative Before removing any of the covers always 1 Flip the main switch to OFF 2 Disconnect power supply from the POWER conne...

Страница 6: ...12 16 18 GCR GCR 12 16 AS AS 12 16 CMOS Complementary Metal Oxide Semiconductor SRAM Static Random Access Memory EEPROM Electrically Erasable Programmable Read Only Memory PC Card Personal Computer Me...

Страница 7: ...tal form and passes these to a pre event memory GCR has a permanent continuous recording facility whereas in GSR and AS when the specified triggering criteria have been met the Instrument either begin...

Страница 8: ...ition as warranted buyer shall be entitled to a refund of the purchase price upon return of the instrument to GeoSIG 50 of freight charges on shipments of warranty repairs or replacements will be born...

Страница 9: ...five connectors and a screw when fully equipped which are arranged in a row on the front of the housing as shown on Figure 2 These are labelled from left to right SENSOR RS 232 INTERCON OPTION POWER a...

Страница 10: ...ming system tests Maximum data rate is 115 200 Baud INTERCON Optional This connector allows the Instrument to be interconnected to a recording array Different types of interconnections may be realised...

Страница 11: ...ers always 1 Flip the main switch to OFF 2 Disconnect power supply from the POWER connector 3 Disconnect the main battery 4 Make sure that the green Active Charge AC LED indicator is off 3 6 Printed C...

Страница 12: ...For an external battery an external charger has to be used Select therefore a charger with appropriate charging characteristics for the used battery 3 9 External DC Power Supply a DC powered Instrumen...

Страница 13: ...owing the personnel in charge to be informed immediately on the severity of a strong event The outputs are 2 relay contacts either normally open NO or normally closed NC to be specified at order The m...

Страница 14: ...attery charging You should make note at this point of any cultural or environmental sources of noise and vibration around the selected site which may cause false triggers of the recording mechanism Th...

Страница 15: ...information The external power supply has to deliver a minimum of 300 mA at 15 VDC 4 2 3 Requirements for the Instrument Foundation Minimum surface area requirements with internal sensor 50 x 50 cm w...

Страница 16: ...nal sensor is properly levelled using the levelling mechanism supplied within the sensor or the Instrument If no levelling mechanism is supplied make appropriate foundation arrangements that the Instr...

Страница 17: ...meters start data acquisition or leave the Instrument for operation with the actual configuration as described in the following sections 4 4 Configuring Parameters and Putting in Operation For configu...

Страница 18: ...erial data mode After logging in to the Instrument the serial data mode automatically stops and remains off for the time being logged in Data format 8 bytes are sent with each sample to the COM port B...

Страница 19: ...ument can be directly connected to GeoDAS or SEISLOG in the Packet mode which increases the performance regarding event memory event detection and online GeoDAS SEISLOG and offline SEISAN analysis eno...

Страница 20: ...al channel has a low pass 100 Hz 6th order Butterworth analog filter The sensor input signal passes through this filter prior to being sampled and converted to digital form This filter removes signal...

Страница 21: ...e rates of 50 64 100 125 200 250 400 800 and 1000 SPS the data has to be further decimated digitally The digitised data still contains signal energy at frequencies of up to 500 Hz which has to be filt...

Страница 22: ...ing from 0 to a maximum of 2048 Data recording is initiated when the amplitude exceeds the pre set threshold value The user may enter the threshold values in the selected channel unit GeoDAS calculate...

Страница 23: ...to a low 0 V on a falling edge Several data recorders may be connected in bus fashion and triggered simultaneously by one trigger signal Whenever it is triggered regardless of trigger source the Inst...

Страница 24: ...to the signal before the STA value gets to the trigger level In this case the theoretical maximum value for ALPHA would be 10 2048 ALPHA 20 log 20 dB 205 This would indicate that any value of ALPHA gr...

Страница 25: ...d When an event occurs the Instrument stores digitised sensor data in its battery backed memory for later retrieval Recording continues as long as trigger criteria are met and then for an additional p...

Страница 26: ...3 8 0 25 4 25 80 5 80 250 6 250 where 1 gal 1 cm s2 The below description is the actual Intensity Scale that is used only in GSR 18 Instruments The Intensity Scale is manually configurable within GeoD...

Страница 27: ...rdware Real Time Clock RTC Battery Memory Each group may be selected individually to be performed Each group itself contains several test routines For each failure during any test a flag is set in the...

Страница 28: ...nit 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...

Страница 29: ...again Clear the Warning Flag and run the Self Test again The Stack Monitor test monitors the microprocessor run time stack An overflow of the stack yields a Warning Reset the Instrument by flipping t...

Страница 30: ...is is a severe error recording operation is not blocked by the GSR and AS instruments However the error information is as always indicated in the header of an occurring event for later validation of t...

Страница 31: ...ke sure that the data can be used for analysing Download all event files to your PC before deleting them in the Instrument Run the Self Test again The Data Consistency test checks the block ordering o...

Страница 32: ...e Reconnect the AC power cable switch off the Instrument and disconnect the main battery measure the voltage on the battery cables The voltage should be 13 8 0 3 VDC The physical condition of the Inst...

Страница 33: ...sing 2 ID label 2 Installation 9 LCD 2 LED 2 LTA Update 19 main switch 5 Maintenance 26 Memory 25 memory upgrade 7 Modem 7 Options 7 overvoltage protection 9 phase shift 16 Power Supply 8 Real Time Cl...

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