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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/06/15 14:13
From version 44.1
edited by robert
on 2025/03/03 18:26
Change comment: There is no comment for this version
To version 39.1
edited by robert
on 2025/03/03 18:09
Change comment: There is no comment for this version

Summary

Details

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9 9  ANU has designed and built three generations of seismic data recorders, two of which (the small yellow TerraSAWR and the larger beige LPR-200) are still in use today. Despite their contrasting appearance, they both use the same software, data cards, and have the same instrument response.
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12 12  
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13 13  = Data Card Formatting and Information =
14 14  
15 15  Both the TerraSAWR and LPR-200 require SD Cards to be formatted in FAT32 filesystem. For 64Gb cards it can be difficult to format in FAT32, but [[software >>http://auspass.edu.au/field/fat32cardformatter.exe]]is available. ANU recommend SanDisk Extreme 150 mb/s cards in either 32 or 64Gb size. We strongly discourage using cards larger than 64Gb, and in general smaller cards are less likely to fail. We have also found that "adapter" cards (e.g. SD to microSD) are prone to having write issues and **strongly** advise against them.
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76 76  
77 77  This menu also displays the firmware version, battery, external, and solar voltages, and the temperature of the system.
78 78  
79 -* Check all Initialisation Parameters are marked as successful.
80 -* Check that solar voltage is above 10 V, otherwise the station will not last long.
71 +==== Upon setup ====
81 81  
73 +- Check all Initialisation Parameters are marked as successful.
74 +
75 +- Check that solar voltage is above 10 V, otherwise the station will not last long.
76 +
77 +
82 82  == Live Seismometer Data ==
83 83  
84 84  This screen displays real time seismometer data for all 3 axes of the seismometer. Initially, a plot of raw data from all 3 channels is shown. By pressing enter, a high pass filter can be applied showing a more useful plot of all channels. The up and down arrows can be used to change between a view of all channels, individual channels, and all channels on different X axes.
85 85  
86 -* Check that all 3 channels are present and are producing a signal.
87 -* Stomp on the ground near where the sensor is installed to check that a signal is being picked up by all 3 channels.
88 -* Common representations of poor signals include channels sloping smoothly from high values to zero, or sharp corners in the plots.
82 +==== Upon setup ====
89 89  
84 +- Check that all 3 channels are present and are producing a signal.
85 +
86 +- Stomp on the ground near where the sensor is installed to check that a signal is being picked up by all 3 channels.
87 +
88 +- Common representations of poor signals include channels sloping smoothly from high values to zero, or sharp corners in the plots.
89 +
90 +
90 90  == GPS Data ==
91 91  
92 92  This menu displays the status of the stations' GPS connection. The screen lists; UTC time, UTC date, latitude, longitude, altitude, number of satellite connections, and SNR.
93 93  
94 -* Check that the station is connected to satellites
95 +==== Upon setup ====
95 95  
97 +- Check that the station is connected to satellites
98 +
99 +
96 96  == SD Information ==
97 97  
98 98  The menu lists if the SD card has been initialised, as well as the capacity and space free on the memory card. See "Data card formatting" (above) to see how to format and initialise the inserted SD card.
99 99  
104 +
100 100  == System Configuration ==
101 101  
102 102  This menu is used to set the stations identifiers and parameters.
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109 109  
110 110  The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include:
111 111  
112 -* Trillium Compact (same for 20 and 120)
113 -* CMG - 3ESP
114 -* Guralp 40T
115 -* LE-3D Lite
116 -* Mark L4C
117 -* Mark L4
117 +- Trillium Compact
118 118  
119 +- CMG - 3ESP
120 +
121 +- Guralp 40T
122 +
123 +- LE-3D Lite
124 +
125 +- Mark L4C
126 +
127 +- Mark L4
128 +
119 119  Additionally, the following settings can be used in place of the seismometer model types: +/- 20V, +/- 10V, +/- 5V
120 120  
121 121  The record on restart option ensures that if the logger dies and is powered back up whilst in the field (due to battery charging cycles or other causes) that the recording will resume.
122 122  
123 -* Set the sampling rate, station identifier, and network code. Set the appropriate seismometer type. Most importantly, ensure the record on restart setting is checked.
133 +==== Upon setup ====
124 124  
135 +- Set the sampling rate, station identifier, and network code. Set the appropriate seismometer type. Most importantly, ensure the record on restart setting is checked.
136 +
125 125  (% class="box errormessage" %)
126 126  (((
127 127  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
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132 132  
133 133  == STA/LTA Configuration ==
134 134  
135 -The Short Term Average and Long Term Average Configuration screen.. this is a relic for when people weren't recording continuously. Not advised!
147 +The Short Term Average and Long Term Average Configuration screen is no longer used.
136 136  
149 +
137 137  = LogFile Conversion Script =
138 138  
139 139  Both the TSAWR and LPR-200 write logging information as a binary "dat" file which includes GPS time syncs, temperatures, battery power, and position. To convert them into ASCII you can read, use [[THIS PYTHON SCRIPT>>http://auspass.edu.au/field/anusr_log.py]].
140 140  
154 +
141 141  = Instrument Response =
142 142  
143 143  Both the TerraSAWR and LPR-200 use the same ADS1281 analog-to-digital converter chip and are designed to have identical instrument response. Depending on the output sample rate (e.g. 100 Hz, 250 Hz, 500 Hz, 1000 Hz) amplitude response is consistently flat up to ~~100 Hz but phase response can vary above 1 Hz at 100 Hz (or 10 Hz at 250 Hz).
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151 151  
152 152  = ANU TerraSAWR (Gen 3, FW 3.5a, 2017?- current) =
153 153  
154 -Words to describe the TSAWR would go here, if needed
168 +Text here
155 155  
170 +== Sub-paragraph ==
156 156  
172 +XXXX
157 157  
174 +== Sub-paragraph ==
175 +
176 +xx
177 +
178 +=== Sub-sub paragraph ===
179 +
180 +x
181 +
182 +
158 158  = ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) =
159 159  
160 -Ditto the mighty LPR!
185 +Text here
161 161  
187 +== Sub-paragraph ==
162 162  
163 -= ANU "ANUSR" (Gen 1, 2003? - 2013?) =
189 +x
164 164  
165 -This logger has been retired for a long time and has a different instrument response.
191 +== Sub-paragraph ==
166 166  
193 +x
167 167  
195 +
196 += ANU "ANUSR" (Gen 1, 2003? - 2013?) =
197 +
198 +x
199 +
168 168  = References =
169 169  
170 170  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]
171 -)))
203 +~)~)~)
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174 174  (((
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224 224  [[image:LPR battery.jpg]]
225 225  )))
226 226  )))
227 -)))
259 +
260 +~)~)~)