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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/06/15 14:13
From version 38.1
edited by robert
on 2025/03/03 18:09
Change comment: There is no comment for this version
To version 45.1
edited by robert
on 2025/04/24 13:38
Change comment: There is no comment for this version

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4 4  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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6 6  
7 -
8 8  = Data Card Formatting and Information =
9 9  
10 10  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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71 71  
72 72  This menu also displays the firmware version, battery, external, and solar voltages, and the temperature of the system.
73 73  
74 -==== Upon setup ====
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.
75 75  
76 -- Check all Initialisation Parameters are marked as successful.
77 -
78 -- Check that solar voltage is above 10 V, otherwise the station will not last long.
79 -
80 -
81 81  == Live Seismometer Data ==
82 82  
83 83  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.
84 84  
85 -==== Upon setup ====
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.
86 86  
87 -- Check that all 3 channels are present and are producing a signal.
88 -
89 -- Stomp on the ground near where the sensor is installed to check that a signal is being picked up by all 3 channels.
90 -
91 -- Common representations of poor signals include channels sloping smoothly from high values to zero, or sharp corners in the plots.
92 -
93 -
94 94  == GPS Data ==
95 95  
96 96  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.
97 97  
98 -==== Upon setup ====
94 +* Check that the station is connected to satellites
99 99  
100 -- Check that the station is connected to satellites
101 -
102 -
103 103  == SD Information ==
104 104  
105 105  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.
106 106  
107 -
108 108  == System Configuration ==
109 109  
110 110  This menu is used to set the stations identifiers and parameters.
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117 117  
118 118  The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include:
119 119  
120 -- Trillium Compact
112 +* Trillium Compact (same for 20 and 120)
113 +* CMG - 3ESP
114 +* Guralp 40T
115 +* LE-3D Lite
116 +* Mark L4C
117 +* Mark L4
121 121  
122 -- CMG - 3ESP
123 -
124 -- Guralp 40T
125 -
126 -- LE-3D Lite
127 -
128 -- Mark L4C
129 -
130 -- Mark L4
131 -
132 132  Additionally, the following settings can be used in place of the seismometer model types: +/- 20V, +/- 10V, +/- 5V
133 133  
134 134  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.
135 135  
136 -==== Upon setup ====
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.
137 137  
138 -- Set the sampling rate, station identifier, and network code. Set the appropriate seismometer type. Most importantly, ensure the record on restart setting is checked.
139 -
140 140  (% class="box errormessage" %)
141 141  (((
142 142  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
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147 147  
148 148  == STA/LTA Configuration ==
149 149  
150 -The Short Term Average and Long Term Average Configuration screen is no longer used.
135 +The Short Term Average and Long Term Average Configuration screen.. this is a relic for when people weren't recording continuously. Not advised!
151 151  
152 -
153 153  = LogFile Conversion Script =
154 154  
155 155  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]].
156 156  
157 -
158 158  = Instrument Response =
159 159  
160 160  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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168 168  
169 169  = ANU TerraSAWR (Gen 3, FW 3.5a, 2017?- current) =
170 170  
171 -Text here
154 +Words to describe the TSAWR would go here, if needed
172 172  
173 -== Sub-paragraph ==
174 174  
175 -XXXX
176 176  
177 -== Sub-paragraph ==
178 -
179 -xx
180 -
181 -=== Sub-sub paragraph ===
182 -
183 -x
184 -
185 -
186 186  = ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) =
187 187  
188 -Text here
160 +Ditto the mighty LPR!
189 189  
190 -== Sub-paragraph ==
191 191  
192 -x
193 -
194 -== Sub-paragraph ==
195 -
196 -x
197 -
198 -
199 199  = ANU "ANUSR" (Gen 1, 2003? - 2013?) =
200 200  
201 -x
165 +This logger has been retired for a long time and has a different instrument response.
202 202  
167 +
203 203  = References =
204 204  
205 205  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]
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215 215  )))
216 216  
217 217  
183 +
218 218  (% class="box" %)
219 219  (((
220 220  = TerraSAWR Specs =
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227 227  [[image:1704864886951-793.jpg]]
228 228  
229 229  |=Size (L x W x H)|30 x 25 x12cm
230 -|=Weight (with battery)| ~*~*1.9kg (2.5kg)
196 +|=Weight (with battery)| 1.9kg (2.5kg)
231 231  |=Battery|(((
232 232  Lead-acid 12v, ~~7Ah
233 233  
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249 249  [[image:LPR 3.jpg]]
250 250  
251 251  |=Size (L x W x H)|42 x 34 x17 cm
252 -|=Weight (with battery)|4.9 kg (7.3 kg)
218 +|=Weight (no battery)|5.5 kg
253 253  |=Battery|(((
254 254  LiFePo4 140Ah
255 255