Guralp-systems CMG-3ESPCD Manual de usuario descargar pdf (Pagina 47)

CMG-3ESPCD Digital Broadband Seismometer Using Scream!

For example, setting the STA to 1 second, the LTA to 10 seconds and the Ratio

to 4 would give rise to the following trigger behaviour:

Usually, the values of the STA and LTA periods, and of the Ratio, will be the

same for all selected channels. For convenience, Scream! will automatically

fill in other values to match ones you enter. If you want to use different

values for some channels, you should clear the “Common values” check-box

before altering them.

Once you have enabled the STA/LTA triggering method on a particular

channel, you can use the Control window to change the values of the STA and

MAN-C3E-0002 47 Issue B - November 2013

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 97 98

CMG-3ESPCD 1
Table of Contents 2
1 Preliminary Notes 5
2 Introduction 6
2.1 Sensor response 7
3 Installing the 3ESPCD 8
3.1.4 Connections 9
3.1.5 FireWire 9
3.2 Installation notes 10
3.3 Installing in vaults 11
3.4 Installing in pits 14
3.6 Rapid installation 17
3.6.1 Deployment 18
3.6.2 Recovery 21
3.7 Installing in post-holes 22
3.8 Using the 3ESPCD 23
3.8.2 Reading digitiser disks 24
4 Calibrating the 3ESPCD 28
4.2 Calibration methods 32
4.3 Calibration with Scream! 33
4.4 The coil constant 37
5 Using Scream! 39
5.1.1 System ID 40
5.1.2 Output control 41
5.1.3 Triggering 44
5.1.3.1 STA/LTA 45
5.1.3.2 Level 50
5.1.3.3 External triggering 50
5.1.4 Mux Channels 51
5.1.5 Ports 51
5.2 Controlling digitisers 53
5.2.2 Triggering 54
5.2.3 Calibration 54
5.2.4 Mass Control 54
5.2.5 Data flow 55
5.2.5.1 DIRECT 56
5.2.5.2 FILING 56
5.2.5.3 Heartbeat messages 56
5.2.5.5 ADAPTIVE 58
5.2.5.6 DUAL 58
5.2.5.7 RE-USE / RECYCLE 59
5.2.5.8 WRITE-ONCE 59
6 Command line interface 60
6.2 General configuration 61
6.2.4 BAUD 62
6.2.5 AZIMUTH 62
6.3 Output configuration 63
6.3.2 CONTINUOUS 64
6.3.3 SET-TAPS 64
6.4 Triggering 65
6.4.4 LTA 66
6.4.5 RATIOS 66
6.4.6 PRE-TRIG 66
6.4.7 POST-TRIG 66
6.5 Calibration 67
6.5.2 SQUAREWAVE 68
6.5.3 RANDOMCAL 68
6.5.4 MINUTE 69
6.6 Actions 70
6.6.4 RE-BOOT 71
6.7.1 SHOW-FLASH 71
6.7.2 DIRECT 72
6.7.3 FILING 72
6.7.4 ADAPTIVE 72
6.7.5 FIFO 72
6.7.6 DOWNLOAD 73
6.7.7 ALL-FLASH 73
6.7.8 ALL-DATA 73
6.7.9 STREAM 73
6.7.10 STATUS-ONLY 74
6.7.11 S/S 74
6.7.12 ALL-TIMES 74
6.7.13 FROM-TIME 74
6.7.14 TO-TIME 74
6.7.15 GO 75
6.7.16 END-DOWNLOAD 75
6.7.17 DISKMENU 75
6.7.18 MBTRANSFER 76
6.7.19 ERASEFILE 76
7 Inside the 3ESPCD 77
7.1.2.1 LOCK 78
7.1.2.2 UNLOCK 79
7.1.2.3 CENTRE 80
7.1.3 The feedback system 81
7.1.3.1 Hybrid feedback 82
7.1.3.3 Comparisons 84
7.2 Inside the DM24 85
7.2.2.2 from the command line 87
7.2.3.2 Loading new DSP code 89
8.1 GPS port 90
8.2 DATA OUT port 92
8.3 FIREWIRE port 93
11 Revision History 98

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