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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/04/24 14:58
From version 40.1
edited by robert
on 2025/03/03 18:11
Change comment: There is no comment for this version
To version 46.1
edited by robert
on 2025/04/24 14:58
Change comment: There is no comment for this version

Summary

Details

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Content
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3 3  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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5 5  
6 6  = Data Card Formatting and Information =
7 7  
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69 69  
70 70  This menu also displays the firmware version, battery, external, and solar voltages, and the temperature of the system.
71 71  
72 -==== 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.
73 73  
74 -- Check all Initialisation Parameters are marked as successful.
75 -
76 -- Check that solar voltage is above 10 V, otherwise the station will not last long.
77 -
78 -
79 79  == Live Seismometer Data ==
80 80  
81 81  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.
82 82  
83 -==== 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.
84 84  
85 -- Check that all 3 channels are present and are producing a signal.
86 -
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 -
89 -- Common representations of poor signals include channels sloping smoothly from high values to zero, or sharp corners in the plots.
90 -
91 -
92 92  == GPS Data ==
93 93  
94 94  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.
95 95  
96 -==== Upon setup ====
94 +* Check that the station is connected to satellites
97 97  
98 -- Check that the station is connected to satellites
99 -
100 -
101 101  == SD Information ==
102 102  
103 103  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.
104 104  
105 -
106 106  == System Configuration ==
107 107  
108 108  This menu is used to set the stations identifiers and parameters.
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115 115  
116 116  The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include:
117 117  
118 -- 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
119 119  
120 -- CMG - 3ESP
121 -
122 -- Guralp 40T
123 -
124 -- LE-3D Lite
125 -
126 -- Mark L4C
127 -
128 -- Mark L4
129 -
130 130  Additionally, the following settings can be used in place of the seismometer model types: +/- 20V, +/- 10V, +/- 5V
131 131  
132 132  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.
133 133  
134 -==== 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.
135 135  
136 -- 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 -
138 138  (% class="box errormessage" %)
139 139  (((
140 140  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
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145 145  
146 146  == STA/LTA Configuration ==
147 147  
148 -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!
149 149  
150 -
151 151  = LogFile Conversion Script =
152 152  
153 153  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]].
154 154  
155 -
156 156  = Instrument Response =
157 157  
158 158  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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166 166  
167 167  = ANU TerraSAWR (Gen 3, FW 3.5a, 2017?- current) =
168 168  
169 -Text here
154 +Words to describe the TSAWR would go here, if needed
170 170  
171 -== Sub-paragraph ==
172 172  
173 -XXXX
174 174  
175 -== Sub-paragraph ==
176 -
177 -xx
178 -
179 -=== Sub-sub paragraph ===
180 -
181 -x
182 -
183 -
184 184  = ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) =
185 185  
186 -Text here
160 +Ditto the mighty LPR!
187 187  
188 -== Sub-paragraph ==
189 189  
190 -x
191 -
192 -== Sub-paragraph ==
193 -
194 -x
195 -
196 -
197 197  = ANU "ANUSR" (Gen 1, 2003? - 2013?) =
198 198  
199 -x
165 +This logger has been retired for a long time and has a different instrument response.
200 200  
167 +
201 201  = References =
202 202  
203 203  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]
204 -~)~)~)
171 +)))
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207 207  (((
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213 213  )))
214 214  
215 215  
183 +
184 +
216 216  (% class="box" %)
217 217  (((
218 218  = TerraSAWR Specs =
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225 225  [[image:1704864886951-793.jpg]]
226 226  
227 227  |=Size (L x W x H)|30 x 25 x12cm
228 -|=Weight (with battery)| ~*~*1.9kg (2.5kg)
197 +|=Weight (with battery)| 1.9kg (2.5kg)
229 229  |=Battery|(((
230 230  Lead-acid 12v, ~~7Ah
231 231  
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247 247  [[image:LPR 3.jpg]]
248 248  
249 249  |=Size (L x W x H)|42 x 34 x17 cm
250 -|=Weight (with battery)|4.9 kg (7.3 kg)
219 +|=Weight (no battery)|5.5 kg
251 251  |=Battery|(((
252 -LiFePo4 140Ah
221 +NOW: Any 12v battery with tab connections that will fit (ex. the same TSAWR battery)
253 253  
254 -Rechargeable
223 +DISCONTINUED: LiFePo4 140Ah Rechargeable
255 255  )))
256 256  
257 257  [[image:LPR battery.jpg]]
258 258  )))
259 259  )))
260 -
261 -~)~)~)
229 +)))