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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/04/24 14:58
From version 39.1
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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2 2  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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3 3  
4 -
5 5  = Data Card Formatting and Information =
6 6  
7 7  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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92 92  
93 93  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.
94 94  
95 -==== Upon setup ====
103 +* Check that the station is connected to satellites
96 96  
97 -- Check that the station is connected to satellites
98 98  
99 -
100 100  == SD Information ==
101 101  
102 102  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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114 114  
115 115  The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include:
116 116  
117 -- 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
118 118  
119 -- CMG - 3ESP
120 -
121 -- Guralp 40T
122 -
123 -- LE-3D Lite
124 -
125 -- Mark L4C
126 -
127 -- Mark L4
128 -
129 129  Additionally, the following settings can be used in place of the seismometer model types: +/- 20V, +/- 10V, +/- 5V
130 130  
131 131  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.
132 132  
133 -==== 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.
134 134  
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 -
137 137  (% class="box errormessage" %)
138 138  (((
139 139  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
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144 144  
145 145  == STA/LTA Configuration ==
146 146  
147 -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!
148 148  
149 -
150 150  = LogFile Conversion Script =
151 151  
152 152  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]].
153 153  
154 -
155 155  = Instrument Response =
156 156  
157 157  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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165 165  
166 166  = ANU TerraSAWR (Gen 3, FW 3.5a, 2017?- current) =
167 167  
168 -Text here
165 +Words to describe the TSAWR would go here, if needed
169 169  
170 -== Sub-paragraph ==
167 + 
171 171  
172 -XXXX
173 173  
174 -== Sub-paragraph ==
175 -
176 -xx
177 -
178 -=== Sub-sub paragraph ===
179 -
180 -x
181 -
182 -
183 183  = ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) =
184 184  
185 -Text here
172 +Ditto the mighty LPR!
186 186  
187 -== Sub-paragraph ==
188 188  
189 -x
190 -
191 -== Sub-paragraph ==
192 -
193 -x
194 -
195 -
196 196  = ANU "ANUSR" (Gen 1, 2003? - 2013?) =
197 197  
198 -x
177 +This logger has been retired for a long time and has a different instrument response.
199 199  
179 +
200 200  = References =
201 201  
202 202  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]
203 -~)~)~)
183 +)))
204 204  
205 205  (% class="col-xs-12 col-sm-4" %)
206 206  (((
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256 256  [[image:LPR battery.jpg]]
257 257  )))
258 258  )))
259 -
260 -~)~)~)
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