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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/11/04 15:36
From version 65.1
edited by robert
on 2025/09/16 13:18
Change comment: There is no comment for this version
To version 68.1
edited by robert
on 2025/11/04 15:13
Change comment: There is no comment for this version

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28 28  
29 29  = GPS Considerations =
30 30  
31 -GPS is required for the data to have accurate timestamps. A standard 3-5V 1575.42 Mhz coaxial cable works fine and can be found for relatively cheap (e.g. [[https:~~/~~/www.elecbee.com/en-3555-gps-antenna-bnc-male-for-garmin-gps-120120xl125-sounder-with-cable-2m) >>https://www.elecbee.com/en-3555-gps-antenna-bnc-male-for-garmin-gps-120120xl125-sounder-with-cable-2m]]
31 +GPS is required for the data to have accurate timestamps. A standard 3-5V 1575.42 Mhz coaxial "dongle" antenna works fine and can be found for relatively cheap (e.g. [[https:~~/~~/www.elecbee.com/en-3555-gps-antenna-bnc-male-for-garmin-gps-120120xl125-sounder-with-cable-2m) >>https://www.elecbee.com/en-3555-gps-antenna-bnc-male-for-garmin-gps-120120xl125-sounder-with-cable-2m]]. Anything that locates satellites and gives you a GPS-synced time works!
32 32  
33 33  The TerraSAWR has a built-in GPS but this doesn't work as well, especially if the logger is (wisely) buried. **The LPR does NOT have a built-in GPS antenna, so an external antenna is mandatory.**
34 34  
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40 40  
41 41  The loggers can be "pre-programmed" with information (e.g. site name, sampling rate, etc) or they can be programmed in the field using the buttons on the logger. To pre-program the cards you simply edit a text file (named "[[ANUSRSetup.txt>>http://auspass.edu.au/field/ANUSRSetup.txt]]" for the LPRs, or "[[tSAWRSetup.txt>>http://auspass.edu.au/field/tSAWRSetup.txt]]" for the TerraSAWRs) and place it in the root directory on the SDCard. When the logger boots up, it will parse and load this information.
42 42  
43 -=== The format for ANUSRSetup.txt / LPR200s will be a single line of text that looks like this: ===
43 +(% class="wikigeneratedid" id="HTheformatforANUSRSetup.txt2FLPR200swillbeasinglelineoftextthatlookslikethis:" %)
44 +The format for ANUSRSetup.txt / LPR200s will be a single line of text that looks like this:
44 44  
45 45  {{{XXX195G0100010034864 2 }}}
46 46  
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60 60  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 61  )))
62 62  
63 -=== The format for TSAWR loggers is shorter: ===
64 +(% class="wikigeneratedid" id="HTheformatforTSAWRloggersisshorter:" %)
65 +The format for TSAWR loggers is shorter:
64 64  
65 65  (% class="box errormessage" %)
66 66  (((
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79 79   and seismometer serial number (9999).
80 80  
81 81  
82 -=== The formatting process using the logger: ===
84 +(% class="wikigeneratedid" id="HTheformattingprocessusingthelogger:" %)
85 +The formatting process using the logger:
83 83  
84 84  The process for formatting an SD card within the logger is straightforward. Navigate to the "SD INFORMATION" screen and press ERASE SD CARD. This process may take up to a minute. This will result in erasing all files from the card. Upon starting recording, a new 'seed' will be written containing all the information that the logger has been set with FINISH THIS SECTION
85 85  
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235 235  
236 236  Earliest known model is dated May 2011 (but first deployed November 2012) and still in use today. Potentially capable of housing much larger batteries than the TSAWR due to the larger cavity space.
237 237  
241 +We have found that the older LPR SD card slots can sometimes fail such that the data cards prematurely "pop out" during recording, which can be catastrophic. This seems to mostly occur in periods of hot weather, but not always. We have developed a small add-on that screws into the nearby serial port that effectively holds the cards in place and will ship included with these loggers. Screw the device in firmly, then **gently** slide over a pre-inserted card. Take care not to force the depress the card inadvertently (although testing has shown it will still record).
242 +
243 + [[image:LPR_card_adaptors.jpg||alt="image of the LPR SD-card adapter"]]
244 +
238 238  = ANU "ANUSR" (Gen 1, 2003? - 2012) =
239 239  
240 240  This logger has been retired for a long time and has a different instrument response. It used modular component boards and was powered via an acrylic case of 6 x 6V lantern batteries. There is a somewhat complete one above the CAT lab door if anyone is so inclined to have a look.
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276 276  
277 277  
278 278  
286 +
287 +
288 +
279 279  (% class="box" %)
280 280  (((
281 281  = TerraSAWR Specs =
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333 333  
334 334  
335 335  
346 +
347 +
348 +
336 336  
337 337  )))
LPR_card_adaptors.jpg
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