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Last modified by robert on 2025/06/16 07:51
From version 8.4
edited by robert
on 2024/01/14 12:46
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To version 7.2
edited by robert
on 2024/01/14 12:28
Change comment: There is no comment for this version

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16 16  
17 17  Lorem
18 18  
19 -[[image:1705196270090-364.png]]
20 20  
21 -
22 22  == GPS Considerations ==
23 23  
24 24  The GPS antenna is at the top and center of the unit, and will (usually) only receive signal with a clear sky view directly above. The signal is able to penetrate plastic and terracotta planters and a thin layer of soil, but may struggle if the soil layer is too thick. The BD3C will not start recording without first attaining a GPS lock.
25 25  
26 -= Keeping the Instruments Clean =
24 +== Keeping the Instruments Clean ==
27 27  
28 28  Use a (**landfill**, not //compost//) degradable bag when installing to keep the instrument clean. This will save you many hours of time cleaning them in preparation for their return. [[Here is a video>>http://auspass.edu.au/field/bd3c_removal.mp4]] demonstrating its effectiveness.
29 29  
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96 96  
97 97  Before removing the instrument have your compass, tape, marker, pen, clipboard, logbook and compass ready (in tote bag!). 
98 98  
99 -Write the station name and the instrument’s serial number, along with 'D' and 'C' and ‘R’, each next to a box to indicate 'download' and 'charge'. Stick this label to the top of the instrument. When dealing with dozens or hundreds of these you WILL start to mix them up after a while! Having an easy visual cue keep them sorted will save you a great deal of confusion later on.
97 +Write the station name and the instrument’s serial number, along with 'D' and 'C' and ‘R’, each next to a box to indicate 'download' and 'charge'. Stick this label to the top of the instrument.
100 100  
101 101  Take a photo of the entire setup node with the label on it + compass 
102 102  
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115 115  
116 116  This is a good time to check the "C" box on your temporary labels to mark that the unit has been charged
117 117  
118 -[[IGU 16-HRcharger (left) and harvester (right)>>image:1705195933422-337.png||data-xwiki-image-style-alignment="center"]]
119 119  
120 -
121 -
122 122  == Downloading and Converting Data to MiniSeed ==
123 123  
124 124  
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126 126  
127 127  [[image:1705195543887-977.png]]
128 128  
129 -
130 130  Then open the “SoloLite” software, and just go to “File” to make a new project. In this case, you do not need to find the exact 16 nodes that were grouped for script writing. Do not worry about the settings for the seismic recordings for the next window to pop up, as the only way to reset the instruments (e.g., sampling rate, gain etc) is to write script to re-program them.
131 131  
132 -[[image:1705195543890-537.png||data-xwiki-image-style-alignment="center"]]
126 +[[image:1705195543890-537.png]]
133 133  
134 -
135 135  Once you create the new project, your Data Transfer View panel on the bottom right of the window will show these nodes that have properly connected to the data harvest, including series number, data size etc. It is okay if the “Prospect not matched”, which simply means the project you just created does not match the one you made to program them. Simply select all these nodes, and right click to “force download”, which will initiate the downloading process. Once they are done, you will see new folders created for each slot at your Downloaded Data panel on the top left of the window.
136 136  
137 -[[image:1705195543891-334.png||data-xwiki-image-style-alignment="center"]]
130 +[[image:1705195543891-334.png]]
138 138  
139 -At this stage, it means that the raw DLL data of the recording has been downloaded successfully to your local machine. To output data in readable format, such as SAC or miniSEED, click the “Tool” menu and select “export seismic data”. The parameters here should be straightforward to set and tailored to personal reference.
132 +At this stage, it means that the raw DLL data of the recording has been downloaded successfully to your local machine. To output data in readable format, such as SAC or miniSEED, click the “Tool” menu and select “export seismic data”. The parameters here should be straightforward to set and tailored to personal reference. A list of ANU group preferred parameters can be found at the end of this session. One thing to note is that the “Sample Interval” must be set exactly to this used to reset the nodes. Once you are done with the setting, click “prepare” before “run”. If everything works correctly, you should see the reformatting process from the small panel on the bottom left of this popped up window.
140 140  
141 -(% class="box warningmessage" %)
142 -(((
143 -**Please make sure that data is exported as "COUNTS" and NOT "mV"!**
144 -)))
145 -
146 -(% class="box warningmessage" %)
147 -(((
148 -**Furthermore you must also set "Remove Gain" to the same decibel gain setting that was set during programming! ANU always set this to 18 db (double check) for all types of nodes.**
149 -)))
150 -
151 -A list of ANU group preferred parameters can be found at the end of this session. One thing to note is that the “Sample Interval” must be set exactly to this used to reset the nodes. Once you are done with the setting, click “prepare” before “run”. If everything works correctly, you should see the reformatting process from the small panel on the bottom left of this popped up window.
152 -
153 153  Now the data should be ready. Then you can select these data and right click to output the GPS information associated with them.
154 154  
155 -[[image:1705195543898-365.png||data-xwiki-image-style-alignment="center"]]
136 +[[image:1705195543898-365.png]]
156 156  
157 157  When downloading, all the green lights on the nodes will blink. The associated red lights on the rack will flash when it is downloading, and make sure to disconnect the nodes before you unplug anything. Be careful: if the laptop goes to sleep, the download process will pause.
158 158  
159 -(% class="box infomessage" %)
160 -(((
161 -**INVEST IN FAST EXTERNAL HARD DRIVES – DO NOT LET THIS BE THE LIMITATION OF DATA HARVESTING**. USB-C, USB 3.0, and 4+ Tb of space are highly recommended!
162 -)))
140 +**INVEST IN FAST EXTERNAL HARD DRIVES – DO NOT LET THIS BE THE LIMITATION OF DATA HARVESTING**
163 163  
164 164  When downloading, ensure that all metadata is saved along with the file.
165 165  
166 -Start and endtime: the system will automatically find the earliest time of the data and set that as the starting time. However, you can set the time a day earlier with a sharp start of 00:00:00. In this case, all the outputted data segments will be 24 hours long starting from midnight.
167 -
168 -//Once downloaded, mark the "D" box on your temporary labels!//
169 -
170 -== Converting data ==
171 -
172 -Check the data all have been converted to miniseed correctly 
173 -
174 -– 3 files per station per day 
175 -
176 -* Files are the same size (NOTE if having memory issues one or more of the components may have 0-1 kb)
177 -* ~~ 5 Gb / node / month
178 -
179 -//Tick ‘R’ box on the node label//
180 -
181 -
182 -== Cleaning ==
183 -
184 -If the nodes are placed in a thick plastic bag at the time of installation, the cleaning procedure should be straightforward. If not you have a lot of work to do before they are returned to us!
185 -
186 -
144 +Start and endtime: the system will automatically find the earliest time of the data and set that as the starting time. However, you can set the time a day earlier with a sharp start of 00:00:00. In this case, all the outputted data segments will be 24 hours long starting from midnight. 
187 187  )))
188 188  
189 189  
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