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Last modified by robert on 2026/06/29 16:42
From version 97.1
edited by KB
on 2026/01/19 13:47
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To version 110.2
edited by Jack Dent
on 2026/06/15 09:47
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1 -XWiki.KB
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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23 23  
24 24  The nodes must be programmed in the SoloLite software prior to use. The screenshots below show our recommended parameters for the 5 Hz (16HR-3C) and 5 second (BDC3-5) nodes.
25 25  
26 -[[IGU16HR-3C programming screen set at 250 Hz. Ensure circled areas are set!>>image:5Hz_node_programming.labels.png||alt="IGU-16 3C programming screen" data-xwiki-image-label="IGU-16 3C programming screen set at 250 Hz. Ensure that the circled areas are set!"]]
28 +[[IGU16HR-3C programming screen set at 250 Hz. Ensure circled areas are set!>>image:5Hz_node_programming.labels.png||alt="IGU-16 3C programming screen"]]
27 27  
28 28  [[BD3C-5 programming screen set at 250 Hz. Ensure circled areas are set!>>image:5S_node_programming.labels.png||alt="BD3C-5 programming screen set at 250 hz. Ensure that the circled areas are set!"]]
29 29  
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69 69  
70 70  We have experienced interference from animals (foxes, dogs, goats) digging up and carrying nodes off for tens or hundreds of metres. It is helpful to minimise human and food smells (particularly on the rope handles) when working in areas where this is a risk. Or, wipe down affected nodes with 50-80% methylated spirits if extensive handling can not be avoided.
71 71  
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 +
72 72  = **Installation** =
73 73  
74 74  (% class="box infomessage" %)
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308 308  
309 309  * Once a new project is created, the Data Transfer View panel will display connected nodes with details like series number and data size.
310 310  * If “Prospect not matched” appears, it simply means the new project doesn’t match the original programming project. This is not a concern.
311 -* 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]]
312 312  * Completed downloads will appear as new folders in the Downloaded Data panel.
313 313  )))
314 314  1. (((
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315 315  **Exporting Data in Readable Format**:
316 316  
317 317  * Go to the “Tool” menu and select “export seismic data”.
318 -* Tailor other parameters to personal preference and ensure "Sample Interval" matches the setting used during node reset.
319 -* Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
322 +* Tailor other parameters to project preference and ensure "Sample Interval" matches the setting used during node reset.
323 +* **Ensure export data is set to "COUNTS" (int32), not "mV" (float). This is critical!**
324 +* 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.
325 +Set 'Remove DC' to 'Yes' to centre the data around the zero value
326 +Set the correct Start Time (UTC) and End Time (UTC) of the project to prevent the unnecessary export of older data
327 +* [[image:Smartsolo harvesting #9 copy.png]]
320 320  * (% class="box warningmessage" %)
321 321  (((
322 -* **Ensure to export data as "COUNTS" (int32), not "mV" (float). This is critical!**
323 -
324 -* **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.**
330 +
331 +)))Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
325 325  )))
326 -)))
327 327  
328 328  == Smart Solo IGU-16HR Polarity Notice ==
329 329  
330 -See [[https:~~/~~/auspass.edu.au/xwiki/bin/view/Data/AusPass%20Data/#HSmartSoloNodeZPolaritybug>>https://auspass.edu.au/xwiki/bin/view/Data/AusPass%20Data/#HSmartSoloNodeZPolaritybug]] for discussion. If data is headed to AusPass, we prefer to invert the IGU-16HR channel data manually rather than in the SoloLite software or inverting the response metadata.
336 +See [[5Hz Node Polarity Issues>>https://auspass.edu.au/xwiki/bin/view/Data/AusPass%20Data/#HSmartSoloNodePolarityIssues]] for discussion. If data is headed to AusPass, we prefer to invert the IGU-16HR channel data manually rather than in the SoloLite software or inverting the response metadata.
331 331  
332 -**The BD3C-5 data does not require a polarity inversion.**
338 +**The BD3C-5 data does not require any sort of polarity inversion.**
333 333  
334 334  == 18 Leap Second bug ==
335 335  
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389 389  **Finalizing the Download**:
390 390  
391 391  * After downloading, mark the //"D"// box on your temporary labels to indicate completion.
392 -
393 -
394 394  )))
395 395  
396 -[[image:1706153266647-145.png||data-xwiki-image-style-alignment="center" height="340" width="603"]]
397 397  
398 398  
399 399  
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414 414  
415 415  ----
416 416  
420 += Instrument Response =
421 +
422 +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]]
423 +
424 +== IGU 16HR-3C ==
425 +
426 + '16HR3C': {'poles':[(-22.211059+22.217768j), (-22.211059-22.217768j)],
427 + 'zeros':[0j, 0j],
428 + 'gain':1,
429 + 'sensitivity': 257019225.55108312}
430 +
431 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
432 +
433 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:IGU16_N_huddle.png]]
434 +
435 +== IGU 16-1C ==
436 +
437 +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.
438 +
439 +[[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]]
440 +
441 +== BD3C-5 ==
442 +
443 + 'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
444 + 'zeros':[(14164+0j), (-7162+0j), 0j, 0j],
445 + 'gain':1.69726e-05,
446 + 'sensitivity': 702651512.6046528}
447 +
448 +Above 0.5 Hz, the BD3C-5 response fits well:
449 +
450 +[[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 +
452 +[[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]]
453 +
454 +(% class="wikigeneratedid" %)
455 +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:
456 +
457 +
458 +[[BD3C **0.1 **to 5 Hz bandpass filter>>image:BD3C_Z_huddle.0.1.png]]
459 +
460 +[[BD3C **0.1** to 5 Hz bandpass filter>>image:BD3C_N_huddle.0.1.png]]
461 +
462 +== IGU-16 Horizontal noise & how to avoid ==
463 +
464 +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.
465 +
466 +[[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]]
467 +
468 +(% class="wikigeneratedid" %)
469 +The BD3C-5 nodes do not have this issue:
470 +
471 +[[BD3C-5 test, as above. There is no additional noise on the horizontal channels.>>image:BD3C_psd.png]]
472 +
417 417  = **Cleaning** =
418 418  
419 -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.
475 +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.
420 420  
421 421  = **Weights (for shipping)** =
422 422  
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516 516  |**Dimensions (LxHxW)**|558 x 357 x 300mm
517 517  |**Input rating**|100-210V - 50/60Hz
518 518  |**Power**|1000W
519 -|**Weight**|14.5kg
520 -|**Weight with cables**|21kg
575 +|**Weight**|14.5 kg
576 +|**Weight with cables**|21 kg
521 521  )))
522 522  
523 523  (% class="box" id="HSmartSoloBD3C-16PortableBatteryCharger" %)
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529 529  |**Dimensions (LxHxW)**|625 x 500 x 366mm
530 530  |**Input rating**|100-210V - 50/60Hz
531 531  |**Power**|100W
532 -|**Weight**|21.5 - 24kg
533 -|**Slots no.**|16
588 +|**Weight**|21.5 - 24 kg
589 +|**Capacity**|16 nodes
534 534  |**Download Speed**|20MB/sec/slot
535 535  )))
536 536  
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540 540  
541 541  [[image:20250729_124644.jpg]]
542 542  
543 -|**Dimensions (LxHxW)**|625 x 500 x 366mm
544 -|**Input rating**|100-210V - 50/60Hz
545 -|**Power**|640W
546 -|**Weight**|26.3kg
547 -|**Slots no.**|16
599 +|**Dimensions (LxHxW)**|625 x 500 x 366 mm
600 +|**Input rating**|100-210V - 50/60 Hz
601 +|**Power**|640 W
602 +|**Weight**|26.3 kg
603 +|**Capacity**|16 nodes
548 548  )))
549 549  
550 550  (% class="box" %)
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554 554  [[image:20250729_124957.jpg]]
555 555  
556 556  
557 -|**Dimensions (LxHxW)**|590 x 225 x 405mm
558 -|**Weight**|8.2kg
559 -|**Slots no.**|6
613 +|**Dimensions (LxHxW)**|590 x 225 x 405 mm
614 +|**Weight**|8.2 kg
615 +|**Capacity**|6 nodes
560 560  )))
561 561  
562 562  (% class="box" %)
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566 566  [[image:20250729_124502.jpg]]
567 567  
568 568  |**Dimensions (LxHxW)**|230 x 340 x 310mm
569 -|**Weight**|3.6kg
570 -|**Slots no.**|6
625 +|**Weight**|(((
626 +3.6kg (empty)
627 +
628 +18.0kg (full)
571 571  )))
630 +|**Capacity**|6 nodes
631 +)))
572 572  
573 573  (% class="box" %)
574 574  (((
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578 578  
579 579  |**Dimensions (LxHxW)**|225 x 200 x 550mm
580 580  |**Weight**|
581 -|**Slots no.**|6
641 +|**Capacity**|8 nodes
582 582  )))
583 583  )))
584 584  )))
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