Guralp Systems Scream User Manual

Page 4

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Scream! 4.5

7.3.1 STA/LTA....................................................................................................81

7.3.2 Level........................................................................................................... 85
7.3.3 External triggering.....................................................................................85

7.3.4 Pre-trigger and post-trigger recording.......................................................86

7.4 Mux Channels...................................................................................................86

7.5 Ports.................................................................................................................. 87

8 Controlling digitisers...............................................................................................89

8.1 System............................................................................................................... 89

8.2 Triggering..........................................................................................................90
8.3 Calibration........................................................................................................91

8.4 Mass Control.....................................................................................................92
8.5 Data flow...........................................................................................................93

8.5.1 DIRECT......................................................................................................94
8.5.2 FILING....................................................................................................... 95

8.5.3 DUPLICATE...............................................................................................96
8.5.4 DUAL......................................................................................................... 97

8.5.5 FIFO (First In First Out)............................................................................97
8.5.6 ADAPTIVE.................................................................................................98

8.5.7 Transmission mode summary...................................................................99

8.6 Buffer Memory Usage.......................................................................................99

8.6.1 RE-USE / RECYCLE...................................................................................99
8.6.2 WRITE-ONCE..........................................................................................100

9 Recording and playback.......................................................................................101

9.1 Recording........................................................................................................ 101
9.2 Files................................................................................................................. 103

9.2.1 UFF file format........................................................................................106
9.2.2 MiniSEED file format..............................................................................107

9.2.3 SAC file format........................................................................................109
9.2.4 SUDS file format.....................................................................................110

9.2.5 GSE file format........................................................................................111
9.2.6 CSS file format........................................................................................111

9.2.7 SEG-y file format.....................................................................................112

9.3 Playback..........................................................................................................112

9.3.1 GCF files..................................................................................................112
9.3.2 Reading hard disks..................................................................................115

9.3.3 SCSI tapes................................................................................................116

9.4 Automatic playback........................................................................................117

10 Printing options...................................................................................................119

10.1 Page printout.................................................................................................119

10.1.1 Automatic printing................................................................................119

10.1.2 Automatic screen-shots.........................................................................121

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Issue K

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