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Last modified by robert on 2026/06/29 16:42
From version 116.1
edited by robert
on 2026/06/29 16:42
Change comment: There is no comment for this version
To version 107.1
edited by robert
on 2026/02/17 16:28
Change comment: There is no comment for this version

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73 73  
74 74  If you come to collect your node and it is missing~-~- LOOK FOR IT! It may not have gotten far. We have found dozens of nodes by spending 15 minutes looking for them.
75 75  
76 -= External Power =
77 -
78 -Both the 5Hz IGU-16HR and 5s BD3C-5 can be optionally powered via external battery via either a replacement bottom half (the 5Hz nodes) or a battery cable accessory (BD3C-5) using standard lead acid batteries from 9-36v. We have done preliminary testing at 250 Hz with a 12v battery:
79 -
80 -- BD3C-5: ~~2 days of recording per 1 Ah
81 -
82 -- IGU16-HR 3C:  ~~3.5 days of recording per 1 Ah
83 -
84 -- IGU16-HR 1C: ~~7 days of recording per 1 Ah
85 -
86 -Of course, these can also be fit with a solar panel & charge controller which would then theoretically keep them going indefinitely (limited only by the disk storage, which at 250 Hz could be on the order of 12 months).
87 -
88 88  = **Installation** =
89 89  
90 90  (% class="box infomessage" %)
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111 111  
112 112  **Site Analysis**:
113 113  
114 -* **Take compass measurements away from the sensor as it will affect your measurement. Use a stick or shovel to help align.**
115 -* Take photographs from various angles to document the site setup thoroughly. Have a colleague stand next to it pointing at it.
116 -* Include a detailed site description in your notes.
102 +* **Take compass measurements away from the sensor as it will affect your measurement.**
103 +* Take photographs from various angles to document the site setup thoroughly.
104 +* Include a detailed site description in your notes
117 117  
118 118  == 3. GPS Considerations ==
119 119  
120 120  (% class="wikigeneratedid" %)
121 -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 (2 cm?) layer of soil, but may struggle if the soil layer is too thick. **These nodes will not start recording without attaining a GPS lock** and repeated attempts will excessively drain the battery.
109 +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. **These nodes will not start recording without attaining a GPS lock** and repeated attempts will excessively drain the battery.
122 122  
123 123  == 4. Visibility and Location Marking ==
124 124  
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126 126  
127 127  **GPS Marking**:
128 128  
129 -* Use a GPS device to mark the instrument's exact location. Most modern cell phones can get to about a 3m error with their internal GPS also; you can probably also get away with investing a few dollars in a good app that shows error and lets you log markers.
130 -* Also write the GPS down on paper (ie your [[LOG SHEET>>http://auspass.edu.au/field/NODES_blank_fieldlog.pdf]]).
117 +* Use a GPS device to mark the instrument's exact location.
118 +* Record this location in both your paper notes and the GPS device.
131 131  
132 132  == (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)5. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
133 133  
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324 324  
325 325  * Once a new project is created, the Data Transfer View panel will display connected nodes with details like series number and data size.
326 326  * If “Prospect not matched” appears, it simply means the new project doesn’t match the original programming project. This is not a concern.
327 -* Select all nodes and right-click to “force download”. This starts the download process.[[image:Smartsolo harvesting #4 copy.png]]
315 +* Select all nodes and right-click to “force download”. This starts the download process.
328 328  * Completed downloads will appear as new folders in the Downloaded Data panel.
329 329  )))
330 330  1. (((
... ... @@ -331,17 +331,14 @@
331 331  **Exporting Data in Readable Format**:
332 332  
333 333  * Go to the “Tool” menu and select “export seismic data”.
334 -* Tailor other parameters to project preference and ensure "Sample Interval" matches the setting used during node reset (note: the standard used by ANU is 4ms, or 250hz)
322 +* Tailor other parameters to personal preference and ensure "Sample Interval" matches the setting used during node reset.
323 +* Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
335 335  * (% class="box warningmessage" %)
336 336  (((
337 -**Ensure export data is set to "COUNTS" (int32), not "mV" (float). This is critical!**
326 +* **Ensure to export data as "COUNTS" (int32), not "mV" (float). This is critical!**
327 +
328 +* **Set "Remove Gain" to the same decibel gain as during programming. By default ANU sets this to 24db for short period nodes (a scaling factor of 15.848932), and 6db (a factor of 2.0) for broadband nodes.**
338 338  )))
339 -* Set "Remove Gain" to the same decibel gain as during programming. By default ANU sets this to 24db for short period nodes (a scaling factor of 15.848932), and 6db (a factor of 2.0) for broadband nodes.
340 -* Set "Remove DC" to "Yes" to centre the data around the zero value
341 -* Set the correct Start Time (UTC) and End Time (UTC) of the project to prevent the unnecessary export of older data
342 -* [[image:Smartsolo harvesting #9 copy.png]]
343 -* Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
344 -* The data will be exported to the SOLODATA folder. For a windows system, the following file explorer page is where you must navigate to to locate your project folder[[image:Smartsolo harvesting #8 copy.png]]
345 345  )))
346 346  
347 347  == Smart Solo IGU-16HR Polarity Notice ==
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408 408  **Finalizing the Download**:
409 409  
410 410  * After downloading, mark the //"D"// box on your temporary labels to indicate completion.
396 +
397 +
411 411  )))
412 412  
400 +[[image:1706153266647-145.png||data-xwiki-image-style-alignment="center" height="340" width="603"]]
413 413  
414 414  
415 415  
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441 441   'gain':1,
442 442   'sensitivity': 257019225.55108312}
443 443  
444 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:16HR_Z_huddle.png||alt="IGU16_Z_huddle.png"]]
432 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
445 445  
446 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:16HR_N_huddle.png||alt="IGU16_N_huddle.png"]]
434 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_N_huddle.png]]
447 447  
448 448  == IGU 16-1C ==
449 449  
450 450  The 1C nodes seem to have the same response as the 3-channel IGU-16HR-3C (above), however the response posted at IRIS-NRL seems to imply that there is no poles and zeros information (e.g. a flat/linear response). This is 100% not so.
451 451  
452 -[[IGU-16 1C, X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter. Seems to be same response as IGU-16HR-3C.>>image:16HR1C_Z_huddle.png||alt="IGU16_1C_Z_huddle.png"]]
440 +[[IGU-16 1C, X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter. Seems to be same response as IGU-16HR-3C.>>image:IGU16_1C_Z_huddle.png]]
453 453  
454 454  == BD3C-5 ==
455 455  
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458 458   'gain':1.69726e-05,
459 459   'sensitivity': 702651512.6046528}
460 460  
461 -Above 0.5 Hz, the BD3C-5 response fits well:
449 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.png]]
462 462  
463 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.0.5.png]]
451 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_N_huddle.png]]
464 464  
465 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:BD3C_N_huddle.0.5.png]]
466 -
467 467  (% class="wikigeneratedid" %)
468 -Below the corner frequency (0.2 Hz) the phase response still fares well, but amplitude response may need to be dialed in a bit (it seems a bit high). We are working to try to calibrate this a bit better. In the next two figures the filter is **0.1** to 5 Hz:
454 +Below the corner frequency 0.2 Hz (i.e. 5 seconds) the response still does a good job, but may need to be dialed in a bit. We are looking into this.
469 469  
470 470  
471 -[[BD3C **0.1 **to 5 Hz bandpass filter>>image:BD3C_Z_huddle.0.1.png]]
457 +[[BD3C 0.1 to 5 Hz bandpass>>image:BD3C_Z_huddle.0.1.png]]
472 472  
473 -[[BD3C **0.1** to 5 Hz bandpass filter>>image:BD3C_N_huddle.0.1.png]]
459 +[[BD3C 0.1 to 5 Hz bandpass>>image:BD3C_N_huddle.0.1.png]]
474 474  
475 475  == IGU-16 Horizontal noise & how to avoid ==
476 476  
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