Skip to Content

Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/11/04 15:36
From version 71.1
edited by robert
on 2025/11/04 15:36
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

Details

Page properties
Content
... ... @@ -28,7 +28,7 @@
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 "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!
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 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  
... ... @@ -216,7 +216,7 @@
216 216  
217 217  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.
218 218  
219 -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') ).
220 220  
221 221  
222 222  [[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"]]
... ... @@ -238,10 +238,6 @@
238 238  
239 239  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.
240 240  
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 until it is flush with the top of the card. It probably won't slide over all the way and that's by design. 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 -
245 245  = ANU "ANUSR" (Gen 1, 2003? - 2012) =
246 246  
247 247  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.
... ... @@ -284,11 +284,6 @@
284 284  
285 285  
286 286  
287 -
288 -
289 -
290 -
291 -
292 292  (% class="box" %)
293 293  (((
294 294  = TerraSAWR Specs =
... ... @@ -347,10 +347,5 @@
347 347  
348 348  
349 349  
350 -
351 -
352 -
353 -
354 -
355 355  
356 356  )))
LPR_card_adaptors.jpg
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -153.3 KB
Content