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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/09/16 13:22
From version 62.1
edited by robert
on 2025/08/08 16:04
Change comment: There is no comment for this version
To version 66.1
edited by robert
on 2025/09/16 13:19
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -26,6 +26,14 @@
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 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]]
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.
... ... @@ -32,7 +32,8 @@
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  
... ... @@ -52,7 +52,8 @@
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  (((
... ... @@ -71,7 +71,8 @@
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  
... ... @@ -186,11 +186,10 @@
186 186   Stage 4: FIRResponseStage from COUNTS to COUNTS, gain: 1
187 187   Stage 5: FIRResponseStage from COUNTS to COUNTS, gain: 1
188 188   Stage 6: FIRResponseStage from COUNTS to COUNTS, gain: 0.99998
189 - Stage 7: FIRResponseStage from COUNTS to COUNTS, gain: 1
190 - Stage 8: FIRResponseStage from COUNTS to COUNTS, gain: 1##
200 + Stage 7: FIRResponseStage from COUNTS to COUNTS, gain: 1##
191 191  
192 192  
193 -However, if retrieving from AusPass or IRIS, the 2nd "sensor gain" stage is combined with the logger gain. This has no affect, but will be one stage short:
203 +However, if retrieving from AusPass or IRIS, the 2nd "sensor gain" stage is combined with the logger gain. This has no affect, but you may detect that the former Stage 2 V->V ResponseStage has been merged into the Stage 3 gain.
194 194  
195 195  ##Channel Response
196 196   From M/S (Velocity) to COUNTS ()
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266 266  
267 267  
268 268  
279 +
280 +
281 +
282 +
269 269  (% class="box" %)
270 270  (((
271 271  = TerraSAWR Specs =
... ... @@ -320,5 +320,9 @@
320 320  
321 321  
322 322  
337 +
338 +
339 +
340 +
323 323  
324 324  )))