Changes for page ANU Seismic Data Loggers
Last modified by robert on 2026/02/19 15:45
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... ... @@ -16,10 +16,8 @@ 16 16 17 17 At 100 Hz and with a GPS cable connected these loggers draw about 220 mW of power once the screen is off (higher sample rates draw more power but only marginally, < 5 mW). Adding a sensor (e.g. a Trillium Compact 120) increases this to approximately 400 mW, or 0.4 volt-amps. So, in theory 7 Ah battery should last about 10 days without a solar panel, but in practice it seems to be a bit closer to 8 which may be due to variability in power drain while in getting GPS locks. 18 18 19 -For very sunny environments (latitudes < 30) a 20 Volt ,10 Watt solar panel should have no issue keeping these loggers alive over the summer months, and assuming unobstructed skies should also be fine over winter.**However** whenpossible a20 Watt paneworks best, especially as theyusuallycost only$10-20more thesedays.19 +For very sunny environments (latitudes < 30) a 20 Volts 10 Watt solar panel should have no issue keeping these loggers alive over the summer months, and assuming unobstructed skies should also be fine over winter. However there is no harm in using 20 or even a 40 Watt panel, especially for high latitudes, coastal regions, or areas without a full sky view. In theory up to a 60 Watt solar panel is fine, but we don't recommend anything over 40 Watts and that amount of power is already overkill. 20 20 21 -40 Watt panels can also be used, and may be needed for extreme climates, or areas without a full sky view. 60 Watt panels have also been known to work, but this is now reaching the the limit of what the loggers can reasonably handle for extended periods and are not recommended for long term deploys. 22 - 23 23 (% class="box infomessage" %) 24 24 ((( 25 25 Power issues are easy and cheap to solve relative to the cost of your experiment, don't skimp! ... ... @@ -60,7 +60,7 @@ 60 60 61 61 (% class="box warningmessage" %) 62 62 ((( 63 -NOTE: the 2 at the very end is for "RECORD ON RESTART". 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. (# of blank spaces before this doesn't matter) 61 +NOTE: the 2 at the very end is for "RECORD ON RESTART". 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. (# of blank spaces before this doesn't matter) 64 64 ))) 65 65 66 66 (% class="wikigeneratedid" id="HTheformatforTSAWRloggersisshorter:" %) ... ... @@ -177,7 +177,7 @@ 177 177 178 178 = LogFile Conversion Script = 179 179 180 -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]] (current version: 1.42, 02/2026).178 +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]]. 181 181 182 182 = Instrument Response = 183 183 ... ... @@ -218,7 +218,7 @@ 218 218 219 219 For the most part, the data logger response essentially flat when the samplerate output is set to 100 Hz or less and for seismological purposes is likely to be impossible to detect below 20 Hz regardless. 220 220 221 -Instrument response can be downloaded from IRIS [[Nominal Response Library>>https://ds.iris.edu/ds/nrl/ datalogger/anurses]] if need be, or [[directly from us>>http://auspass.edu.au/data/logger_response]] , or by downloading the response of an equivalent sensor at AusPass (e.g. get_stations(level='response') ).219 +Instrument response can be downloaded from IRIS [[Nominal Response Library>>https://ds.iris.edu/ds/nrl/]] if need be, or [[directly from us>>http://auspass.edu.au/data/logger_response]] , or by downloading the response of an equivalent sensor at AusPass (e.g. get_stations(level='response') ). 222 222 223 223 224 224 [[Amplitude and phase response for ANU logger at 50 Hz>>image:ANU_50hz_response.png||data-xwiki-image-style-alignment="center" height="356" width="475"]] ... ... @@ -289,9 +289,6 @@ 289 289 290 290 291 291 292 - 293 - 294 - 295 295 (% class="box" %) 296 296 ((( 297 297 = TerraSAWR Specs = ... ... @@ -353,8 +353,5 @@ 353 353 354 354 355 355 356 - 357 - 358 - 359 359 360 360 )))