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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2026/02/19 15:45
From version 71.1
edited by robert
on 2025/11/04 15:36
Change comment: There is no comment for this version
To version 72.1
edited by robert
on 2026/02/11 16:40
Change comment: There is no comment for this version

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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 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.
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** when possible a 20 Watt pane works best, especially as they usually cost only $10-20 more these days.
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 +
21 21  (% class="box infomessage" %)
22 22  (((
23 23  Power issues are easy and cheap to solve relative to the cost of your experiment, don't skimp!
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58 58  
59 59  (% class="box warningmessage" %)
60 60  (((
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)
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)
62 62  )))
63 63  
64 64  (% class="wikigeneratedid" id="HTheformatforTSAWRloggersisshorter:" %)
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175 175  
176 176  = LogFile Conversion Script =
177 177  
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]].
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).
179 179  
180 180  = Instrument Response =
181 181  
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292 292  (% class="box" %)
293 293  (((
294 294  = TerraSAWR Specs =
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356 356  )))