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Last modified by robert on 2026/02/27 19:58
From version 107.1
edited by robert
on 2026/02/17 16:28
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To version 99.1
edited by robert
on 2026/02/12 13:35
Change comment: There is no comment for this version

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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. Not 'HR')**
11 +* **SmartSolo IGU 16 1C (5 Hz, 'very' short period, single channel)**
12 12  
13 -Visit the [[SmartSolo page>>https://smartsolo.com/igu.html]] for more detail.
14 -
15 15  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.
16 16  
17 17  (% class="box infomessage" %)
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418 418  
419 419  ----
420 420  
421 -= Instrument Response =
422 -
423 -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]]
424 -
425 -== IGU 16HR-3C ==
426 -
427 - '16HR3C': {'poles':[(-22.211059+22.217768j), (-22.211059-22.217768j)],
428 - 'zeros':[0j, 0j],
429 - 'gain':1,
430 - 'sensitivity': 257019225.55108312}
431 -
432 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
433 -
434 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_N_huddle.png]]
435 -
436 -== IGU 16-1C ==
437 -
438 -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.
439 -
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]]
441 -
442 -== BD3C-5 ==
443 -
444 - 'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
445 - 'zeros':[(14164+0j), (-7162+0j), 0j, 0j],
446 - 'gain':1.69726e-05,
447 - 'sensitivity': 702651512.6046528}
448 -
449 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.png]]
450 -
451 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_N_huddle.png]]
452 -
453 -(% class="wikigeneratedid" %)
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.
455 -
456 -
457 -[[BD3C 0.1 to 5 Hz bandpass>>image:BD3C_Z_huddle.0.1.png]]
458 -
459 -[[BD3C 0.1 to 5 Hz bandpass>>image:BD3C_N_huddle.0.1.png]]
460 -
461 -== IGU-16 Horizontal noise & how to avoid ==
462 -
463 -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.
464 -
465 -[[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]]
466 -
467 -(% class="wikigeneratedid" %)
468 -The BD3C-5 nodes do not have this issue:
469 -
470 -[[BD3C-5 test, as above. There is no additional noise on the horizontal channels.>>image:BD3C_psd.png]]
471 -
472 472  = **Cleaning** =
473 473  
474 -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.
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.
475 475  
476 476  = **Weights (for shipping)** =
477 477  
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571 571  |**Dimensions (LxHxW)**|558 x 357 x 300mm
572 572  |**Input rating**|100-210V - 50/60Hz
573 573  |**Power**|1000W
574 -|**Weight**|14.5 kg
575 -|**Weight with cables**|21 kg
521 +|**Weight**|14.5kg
522 +|**Weight with cables**|21kg
576 576  )))
577 577  
578 578  (% class="box" id="HSmartSoloBD3C-16PortableBatteryCharger" %)
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584 584  |**Dimensions (LxHxW)**|625 x 500 x 366mm
585 585  |**Input rating**|100-210V - 50/60Hz
586 586  |**Power**|100W
587 -|**Weight**|21.5 - 24 kg
588 -|**Capacity**|16 nodes
534 +|**Weight**|21.5 - 24kg
535 +|**Slots no.**|16
589 589  |**Download Speed**|20MB/sec/slot
590 590  )))
591 591  
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595 595  
596 596  [[image:20250729_124644.jpg]]
597 597  
598 -|**Dimensions (LxHxW)**|625 x 500 x 366 mm
599 -|**Input rating**|100-210V - 50/60 Hz
600 -|**Power**|640 W
601 -|**Weight**|26.3 kg
602 -|**Capacity**|16 nodes
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
603 603  )))
604 604  
605 605  (% class="box" %)
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609 609  [[image:20250729_124957.jpg]]
610 610  
611 611  
612 -|**Dimensions (LxHxW)**|590 x 225 x 405 mm
613 -|**Weight**|8.2 kg
614 -|**Capacity**|6 nodes
559 +|**Dimensions (LxHxW)**|590 x 225 x 405mm
560 +|**Weight**|8.2kg
561 +|**Slots no.**|6
615 615  )))
616 616  
617 617  (% class="box" %)
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621 621  [[image:20250729_124502.jpg]]
622 622  
623 623  |**Dimensions (LxHxW)**|230 x 340 x 310mm
624 -|**Weight**|(((
625 -3.6kg (empty)
626 -
627 -18.0kg (full)
571 +|**Weight**|3.6kg
572 +|**Slots no.**|6
628 628  )))
629 -|**Capacity**|6 nodes
630 -)))
631 631  
632 632  (% class="box" %)
633 633  (((
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637 637  
638 638  |**Dimensions (LxHxW)**|225 x 200 x 550mm
639 639  |**Weight**|
640 -|**Capacity**|8 nodes
583 +|**Slots no.**|6
641 641  )))
642 642  )))
643 643  )))
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