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Last modified by robert on 2026/06/29 16:42
From version 99.1
edited by robert
on 2026/02/12 13:35
Change comment: There is no comment for this version
To version 110.1
edited by Jack Dent
on 2026/06/15 09:18
Change comment: There is no comment for this version

Summary

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1 -XWiki.robert
1 +XWiki.JackD
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6 6  
7 7  ANSIR supply two types of three-channel nodes, and one type of one-channel node:
8 8  
9 -* **SmartSolo IGU 16HR 3C (5 Hz, 'very' short period)**
9 +* **SmartSolo IGU-16HR 3C (5 Hz, 'very' short period)**
10 10  * **SmartSolo BD3C-5 (5 second, short period)**
11 -* **SmartSolo IGU 16 1C (5 Hz, 'very' short period, single channel)**
11 +* **SmartSolo IGU-16 1C (5 Hz, 'very' short period, single channel. Not 'HR')**
12 12  
13 +Visit the [[SmartSolo page>>https://smartsolo.com/igu.html]] for more detail.
14 +
13 13  The three-channel nodes have a theoretical battery capacity of ~~30 days, whereas the single-channel type has a capacity of ~~50 days. The programming, operation and downloading procedures for all types of SmartSolo nodes are also similar.
14 14  
15 15  (% class="box infomessage" %)
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310 310  
311 311  * Once a new project is created, the Data Transfer View panel will display connected nodes with details like series number and data size.
312 312  * If “Prospect not matched” appears, it simply means the new project doesn’t match the original programming project. This is not a concern.
313 -* Select all nodes and right-click to “force download”. This starts the download process.
315 +* Select all nodes and right-click to “force download”. This starts the download process.[[image:Smartsolo harvesting #4 copy.png]]
314 314  * Completed downloads will appear as new folders in the Downloaded Data panel.
315 315  )))
316 316  1. (((
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317 317  **Exporting Data in Readable Format**:
318 318  
319 319  * Go to the “Tool” menu and select “export seismic data”.
320 -* Tailor other parameters to personal preference and ensure "Sample Interval" matches the setting used during node reset.
322 +* Tailor other parameters to project preference and ensure "Sample Interval" matches the setting used during node reset.
321 321  * Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
322 322  * (% class="box warningmessage" %)
323 323  (((
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324 324  * **Ensure to export data as "COUNTS" (int32), not "mV" (float). This is critical!**
325 325  
326 326  * **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.**
329 +* **Set 'Remove DC' to 'Yes' to centre the data around the zero value**
330 +* **Set the correct Start Time (UTC) and End Time (UTC) of the project to prevent the unnecessary export of old data**
331 +
332 +
327 327  )))
328 328  )))
329 329  
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391 391  **Finalizing the Download**:
392 392  
393 393  * After downloading, mark the //"D"// box on your temporary labels to indicate completion.
394 -
395 -
396 396  )))
397 397  
398 -[[image:1706153266647-145.png||data-xwiki-image-style-alignment="center" height="340" width="603"]]
399 399  
400 400  
401 401  
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416 416  
417 417  ----
418 418  
422 += Instrument Response =
423 +
424 +We are aware that there are various different published responses for these instruments and trust very few of them. One has to be careful with how polarity is handled between groups as well, and if one is working in integer counts (the ANSIR default) or mV (unclear why anyone would use this as it makes file sizes enormous). The response information published below is in **counts** and seems to fit well in huddle tests. Note that the response is the same for all channels and all units (e.g. there are no bespoke calibrations!), all appear to be sample rate insensitive, and the IGU data has been inverted (multiplied by -1) as described here: [[5Hz Node Polarity Issues>>https://auspass.edu.au/xwiki/bin/view/Data/AusPass%20Data/#HSmartSoloNodePolarityIssues]]
425 +
426 +== IGU 16HR-3C ==
427 +
428 + '16HR3C': {'poles':[(-22.211059+22.217768j), (-22.211059-22.217768j)],
429 + 'zeros':[0j, 0j],
430 + 'gain':1,
431 + 'sensitivity': 257019225.55108312}
432 +
433 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
434 +
435 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:IGU16_N_huddle.png]]
436 +
437 +== IGU 16-1C ==
438 +
439 +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.
440 +
441 +[[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:IGU16_1C_Z_huddle.png]]
442 +
443 +== BD3C-5 ==
444 +
445 + 'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
446 + 'zeros':[(14164+0j), (-7162+0j), 0j, 0j],
447 + 'gain':1.69726e-05,
448 + 'sensitivity': 702651512.6046528}
449 +
450 +Above 0.5 Hz, the BD3C-5 response fits well:
451 +
452 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.0.5.png]]
453 +
454 +[[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]]
455 +
456 +(% class="wikigeneratedid" %)
457 +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). In the next two figures the filter is **0.1** to 5 Hz:
458 +
459 +
460 +[[BD3C **0.1 **to 5 Hz bandpass filter>>image:BD3C_Z_huddle.0.1.png]]
461 +
462 +[[BD3C **0.1** to 5 Hz bandpass filter>>image:BD3C_N_huddle.0.1.png]]
463 +
464 +== IGU-16 Horizontal noise & how to avoid ==
465 +
466 +The** 5 Hz nodes** are susceptible to horizontal noise due to the placement of geophones in the units, **but this can be mitigated by completely burying the units flush with the ground.** In the below example, the node was set on the floor of our basement set on its plastic carrying case support. As such the amount of horizontal noise noticeably increases above ~~ 10Hz.
467 +
468 +[[IGU-16HR-3C Power spectrum huddle test vs a CMG-6TD (S1) and TC120/Centaur combo. The N and E channels have excess noise above 10Hz due to "sticking up" out of the ground.>>image:IGU16_spectrum.png]]
469 +
470 +(% class="wikigeneratedid" %)
471 +The BD3C-5 nodes do not have this issue:
472 +
473 +[[BD3C-5 test, as above. There is no additional noise on the horizontal channels.>>image:BD3C_psd.png]]
474 +
419 419  = **Cleaning** =
420 420  
421 -When assembled, the nodes are water resistant but not submersible. They can handle a good spray and wipe-down. A strong, non-wire brush is helpful to reach areas between the metal spikes on the bottom.
477 +When assembled, the nodes are water resistant but not submersible. They can handle a good spray and wipe-down. A stiff plastic brush is helpful to reach areas between the metal spikes on the bottom.
422 422  
423 423  = **Weights (for shipping)** =
424 424  
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518 518  |**Dimensions (LxHxW)**|558 x 357 x 300mm
519 519  |**Input rating**|100-210V - 50/60Hz
520 520  |**Power**|1000W
521 -|**Weight**|14.5kg
522 -|**Weight with cables**|21kg
577 +|**Weight**|14.5 kg
578 +|**Weight with cables**|21 kg
523 523  )))
524 524  
525 525  (% class="box" id="HSmartSoloBD3C-16PortableBatteryCharger" %)
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531 531  |**Dimensions (LxHxW)**|625 x 500 x 366mm
532 532  |**Input rating**|100-210V - 50/60Hz
533 533  |**Power**|100W
534 -|**Weight**|21.5 - 24kg
535 -|**Slots no.**|16
590 +|**Weight**|21.5 - 24 kg
591 +|**Capacity**|16 nodes
536 536  |**Download Speed**|20MB/sec/slot
537 537  )))
538 538  
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542 542  
543 543  [[image:20250729_124644.jpg]]
544 544  
545 -|**Dimensions (LxHxW)**|625 x 500 x 366mm
546 -|**Input rating**|100-210V - 50/60Hz
547 -|**Power**|640W
548 -|**Weight**|26.3kg
549 -|**Slots no.**|16
601 +|**Dimensions (LxHxW)**|625 x 500 x 366 mm
602 +|**Input rating**|100-210V - 50/60 Hz
603 +|**Power**|640 W
604 +|**Weight**|26.3 kg
605 +|**Capacity**|16 nodes
550 550  )))
551 551  
552 552  (% class="box" %)
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556 556  [[image:20250729_124957.jpg]]
557 557  
558 558  
559 -|**Dimensions (LxHxW)**|590 x 225 x 405mm
560 -|**Weight**|8.2kg
561 -|**Slots no.**|6
615 +|**Dimensions (LxHxW)**|590 x 225 x 405 mm
616 +|**Weight**|8.2 kg
617 +|**Capacity**|6 nodes
562 562  )))
563 563  
564 564  (% class="box" %)
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568 568  [[image:20250729_124502.jpg]]
569 569  
570 570  |**Dimensions (LxHxW)**|230 x 340 x 310mm
571 -|**Weight**|3.6kg
572 -|**Slots no.**|6
627 +|**Weight**|(((
628 +3.6kg (empty)
629 +
630 +18.0kg (full)
573 573  )))
632 +|**Capacity**|6 nodes
633 +)))
574 574  
575 575  (% class="box" %)
576 576  (((
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580 580  
581 581  |**Dimensions (LxHxW)**|225 x 200 x 550mm
582 582  |**Weight**|
583 -|**Slots no.**|6
643 +|**Capacity**|8 nodes
584 584  )))
585 585  )))
586 586  )))
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