Guralp Systems 40T Manual
Güralp 40T
Operator's Guide
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Table of Contents
1 Preliminary Notes.............................................................................................................4
1.1 Proprietary Notice........................................................................................................4
1.2 Warnings, Cautions and Notes....................................................................................4
1.3 Manuals and Software.................................................................................................4
2 Introduction.......................................................................................................................5
2.1 Response options........................................................................................................
3 irst encounters................................................................................................................7
3.1 Handling notes.............................................................................................................7
3.2 Connections.................................................................................................................7
3.2.1 The breakout box.................................................................................................7
3.2.2 The hand-held control unit...................................................................................8
3.2.2.1 Signal meter..................................................................................................8
3.2.2.2 Calibration.....................................................................................................9
3.2.2.3 Control commands........................................................................................9
3.2.2.4 Banana plugs................................................................................................9
3.3 Levelling the instrument.............................................................................................10
3.4 Zeroing the instrument...............................................................................................10
3.4.1 Adjusting the mass position offsets manually....................................................11
3.4.2 Adjusting the mass position offsets with an HCU..............................................12
3.4.3 Zeroing a 40TD digital instrument......................................................................13
3.4.4 Digital nulling operation......................................................................................1
4 Installing the 40T.............................................................................................................17
4.1 Installation notes........................................................................................................17
4.2 Installing in vaults......................................................................................................18
4.2.1 Choosing a location............................................................................................18
4.2.2 Temperature stability..........................................................................................19
4.2.3 Other considerations..........................................................................................20
4.3 Installing in pits..........................................................................................................20
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4.3.1 Other installation methods.................................................................................22
5 Calibrating the 40T..........................................................................................................25
5.1 The calibration pack..................................................................................................25
5.1.1 Poles and zeroes...............................................................................................25
5.1.2 Frequency response curves...............................................................................2
5.1.3 Obtaining copies of the calibration pack............................................................27
5.2 Calibration methods...................................................................................................28
5.3 Calibration with Scream!............................................................................................28
5.3.1 Sensor response codes.....................................................................................32
5.4 Calibration with a hand-held control unit...................................................................32
6 Connector pin-outs.........................................................................................................34
.1 Output port and breakout box RECORDER connector.............................................34
.2 Output port and breakout box RECORDER connector (high-gain option)...............3
.3 Breakout box power connector..................................................................................37
7 Specifications..................................................................................................................38
8 Revision history..............................................................................................................40
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1 Preliminary Notes
1.1 Proprietary Notice
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4 Installing the 40T
4.1 Installation notes
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