Checking out equipment in Atrax

Log in using regular user name and password.

Go to Check out/ return equipement.

Double click the CSA logo to allow editing of check out log.

If checking out, scan each item.

If returning, just enter the return date in the proper field.

I-deas not working

if I-deas loads up alright, but does not take data, it could be because the address scheme for the input modules is flipped (aka reading the last module first and first last). To change this, go to:

UGS\NXI5\tda\hpvxi-1432

This is the setup file for ideas. Scroll down to the "flip 1" option and change it.

Ideas
flip
not taking data

Good Modal Extraction

To get good modal extraction from tap tests and the like, You should have at least 5 (better to have 10) spectral lines within the modal bandwidth.

Modal Bandwidth: the area between the half power points of the mode

Half Power Points: take the peak of the mode, normalize it to 1, come down to .707 on either side. Whatever width that is is the modal bandwidth. (.707 because you are looking at an FRF, a linear scale. If you were looking at a PSD it would be 0.5)