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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/11/04 15:36
From version 64.1
edited by robert
on 2025/08/08 16:09
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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26 26  (% class="wikigeneratedid" %)
27 27  In the case of an LPR, there is a large compartment for housing an internal battery, able to accommodate anything from a 10-30Ah battery. To use a standard lead acid battery with a positive and negative terminal, a 6 pin adaptor must be used. This ensures the voltage from the external power port (pins A and C) connect to the battery and ensure the system actually recharges. (See [[Peripheral Equipment>>doc:Instrumentation.Peripheral Equipment.WebHome]] for a more comprehensive overview of this kind of setup)
28 28  
29 += GPS Considerations =
30 +
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 +
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 +
35 +In a pinch, a severed or broken antenna can be mended back together relatively easily by non-experts. Even stripping the wire and twisting it back together by hand on site is possible!
36 +
29 29  = Data Card Formatting and Information =
30 30  
31 31  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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32 32  
33 33  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.
34 34  
35 -== 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:
36 36  
37 37  {{{XXX195G0100010034864 2 }}}
38 38  
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52 52  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)
53 53  )))
54 54  
55 -== The format for TSAWR loggers is shorter: ==
64 +(% class="wikigeneratedid" id="HTheformatforTSAWRloggersisshorter:" %)
65 +The format for TSAWR loggers is shorter:
56 56  
57 57  (% class="box errormessage" %)
58 58  (((
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71 71   and seismometer serial number (9999).
72 72  
73 73  
74 -== The formatting process using the logger: ==
84 +(% class="wikigeneratedid" id="HTheformattingprocessusingthelogger:" %)
85 +The formatting process using the logger:
75 75  
76 76  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
77 77  
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227 227  
228 228  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.
229 229  
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 +
230 230  = ANU "ANUSR" (Gen 1, 2003? - 2012) =
231 231  
232 232  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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270 270  (% class="box" %)
271 271  (((
272 272  = TerraSAWR Specs =
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326 326  
327 327  )))
LPR_card_adaptors.jpg
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1 +XWiki.robert
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