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Last modified by robert on 2026/02/27 19:58
From version 105.1
edited by robert
on 2026/02/17 12:38
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To version 100.1
edited by robert
on 2026/02/13 22:02
Change comment: There is no comment for this version

Summary

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416 416  
417 417  ----
418 418  
419 -= Instrument Response =
420 -
421 -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]]
422 -
423 -== IGU 16HR-3C ==
424 -
425 - '16HR3C': {'poles':[(-22.211059+22.217768j), (-22.211059-22.217768j)],
426 - 'zeros':[0j, 0j],
427 - 'gain':1,
428 - 'sensitivity': 257019225.55108312}
429 -
430 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
431 -
432 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_N_huddle.png]]
433 -
434 -== IGU 16-1C ==
435 -
436 -The 1C nodes seem to have a slightly different response to the 3C (TBA)
437 -
438 -== BD3C-5 ==
439 -
440 - 'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
441 - 'zeros':[(14164+0j), (-7162+0j), 0j, 0j],
442 - 'gain':1.69726e-05,
443 - 'sensitivity': 702651512.6046528}
444 -
445 -*image TBA but they have been created in the past~-~- we are 100% confident our published responses are correct
446 -
447 -== Horizontal noise & how to avoid ==
448 -
449 -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.
450 -
451 -[[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]]
452 -
453 453  = **Cleaning** =
454 454  
455 -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.
456 456  
457 457  = **Weights (for shipping)** =
458 458  
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552 552  |**Dimensions (LxHxW)**|558 x 357 x 300mm
553 553  |**Input rating**|100-210V - 50/60Hz
554 554  |**Power**|1000W
555 -|**Weight**|14.5 kg
556 -|**Weight with cables**|21 kg
521 +|**Weight**|14.5kg
522 +|**Weight with cables**|21kg
557 557  )))
558 558  
559 559  (% class="box" id="HSmartSoloBD3C-16PortableBatteryCharger" %)
... ... @@ -565,8 +565,8 @@
565 565  |**Dimensions (LxHxW)**|625 x 500 x 366mm
566 566  |**Input rating**|100-210V - 50/60Hz
567 567  |**Power**|100W
568 -|**Weight**|21.5 - 24 kg
569 -|**Capacity**|16 nodes
534 +|**Weight**|21.5 - 24kg
535 +|**Slots no.**|16
570 570  |**Download Speed**|20MB/sec/slot
571 571  )))
572 572  
... ... @@ -576,11 +576,11 @@
576 576  
577 577  [[image:20250729_124644.jpg]]
578 578  
579 -|**Dimensions (LxHxW)**|625 x 500 x 366 mm
580 -|**Input rating**|100-210V - 50/60 Hz
581 -|**Power**|640 W
582 -|**Weight**|26.3 kg
583 -|**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
584 584  )))
585 585  
586 586  (% class="box" %)
... ... @@ -590,9 +590,9 @@
590 590  [[image:20250729_124957.jpg]]
591 591  
592 592  
593 -|**Dimensions (LxHxW)**|590 x 225 x 405 mm
594 -|**Weight**|8.2 kg
595 -|**Capacity**|6 nodes
559 +|**Dimensions (LxHxW)**|590 x 225 x 405mm
560 +|**Weight**|8.2kg
561 +|**Slots no.**|6
596 596  )))
597 597  
598 598  (% class="box" %)
... ... @@ -607,7 +607,7 @@
607 607  
608 608  18.0kg (full)
609 609  )))
610 -|**Capacity**|6 nodes
576 +|**Capacity**|6
611 611  )))
612 612  
613 613  (% class="box" %)
... ... @@ -618,7 +618,7 @@
618 618  
619 619  |**Dimensions (LxHxW)**|225 x 200 x 550mm
620 620  |**Weight**|
621 -|**Capacity**|8 nodes
587 +|**Capacity**|8
622 622  )))
623 623  )))
624 624  )))
IGU16_N_huddle.png
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IGU16_spectrum.png
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