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Last modified by robert on 2026/02/27 19:58
From version 103.1
edited by robert
on 2026/02/16 17:55
Change comment: There is no comment for this version
To version 104.1
edited by robert
on 2026/02/16 18:29
Change comment: There is no comment for this version

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... ... @@ -433,6 +433,8 @@
433 433  
434 434  == IGU 16-1C ==
435 435  
436 +The 1C nodes seem to have a slightly different response to the 3C (TBA)
437 +
436 436  == BD3C-5 ==
437 437  
438 438   'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
... ... @@ -440,6 +440,8 @@
440 440   'gain':1.69726e-05,
441 441   'sensitivity': 702651512.6046528}
442 442  
445 +*image TBA but they have been created in the past~-~- we are 100% confident our published responses are correct
446 +
443 443  == Horizontal noise & how to avoid ==
444 444  
445 445  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.