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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/06/20 12:31
From version 38.1
edited by robert
on 2025/03/03 18:09
Change comment: There is no comment for this version
To version 43.1
edited by robert
on 2025/03/03 18:26
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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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 ====
103 +* Check that the station is connected to satellites
99 99  
100 -- Check that the station is connected to satellites
101 101  
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.
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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
123 +* Trillium Compact (same for 20 and 120)
124 +* CMG - 3ESP
125 +* Guralp 40T
126 +* LE-3D Lite
127 +* Mark L4C
128 +* 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 ====
134 +* 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.
146 +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
165 +Words to describe the TSAWR would go here, if needed
172 172  
173 -== Sub-paragraph ==
167 + 
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
172 +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
177 +This logger has been retired for a long time and has a different instrument response.
202 202  
179 +
203 203  = References =
204 204  
205 205  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]