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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/04/24 14:58
From version 31.3
edited by Jack Dent
on 2024/12/19 13:01
Change comment: There is no comment for this version
To version 34.1
edited by Jack Dent
on 2024/12/19 13:23
Change comment: There is no comment for this version

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34 34  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)
35 35  )))
36 36  
37 -=== The format for TSAWR loggers is shorter ===
37 +=== The format for TSAWR loggers is shorter: ===
38 38  
39 39  (% class="box errormessage" %)
40 40  (((
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43 43  
44 44  SITE15G02500039999 2
45 45  
46 -corresponding to site SITE1,
46 +corresponding to site SITE1, 
47 47  
48 48   network 5G
49 49   sample rate 0250, (i.e. 250 Hz)
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57 57  
58 58  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
59 59  
60 +[[image:original_0747763c-e3dd-4667-b897-833f12c8e0b8_20241219_130604.jpg||height="240" width="298"]]
60 60  
61 61  Here is a general guideline for how much data you can expect to fit on a card:
62 62  
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67 67  
68 68  = Logger Menus Overview (and setup) =
69 69  
71 +The same menus are used in both types of loggers.
72 +
70 70  == System Information ==
71 71  
72 72  This menu provides an overview of the status of the station. Under 'Initialisation Parameters', the status of systems that are initialised upon powering on the logger can be checked.
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93 93  - Common representations of poor signals include channels sloping smoothly from high values to zero, or sharp corners in the plots.
94 94  
95 95  
96 -== GPS ==
99 +== GPS Data ==
97 97  
98 98  This menu displays the status of the stations' GPS connection. The screen lists; UTC time, UTC date, latitude, longitude, altitude, number of satellite connections, and SNR.
99 99  
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144 144  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
145 145  )))
146 146  
150 +(% class="wikigeneratedid" %)
151 +[[image:original_2b83fcf5-ee5a-4375-bab1-2d738e4ffe8c_20241219_130646.jpg||height="234" width="289"]]
152 +
147 147  == STA/LTA Configuration ==
148 148  
149 149  -
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154 154  
155 155  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]].
156 156  
163 += =
164 +
157 157  = Instrument Response =
158 158  
159 159  Both the TerraSAWR and LPR-200 use the same ADS1281 analog-to-digital converter chip and are designed to have identical instrument response. Depending on the output sample rate (e.g. 100 Hz, 250 Hz, 500 Hz, 1000 Hz) amplitude response is consistently flat up to ~~100 Hz but phase response can vary above 1 Hz at 100 Hz (or 10 Hz at 250 Hz).
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259 259  )))
260 260  )))
261 261  )))
262 -
263 -
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