Hi,
I'm looking for informations about bump tests. I'm using a CSI 2130 with a CSI force hammer to make these tests.
Does anyone know what the cross phase B/A represents?
What are the signals considered in this phase mesurement? (phase measured between the response at the accelerometer and ????)

Thanks for your answers,

J6240 (?)
Cross phase - the phase between the two channels.
Bump test: If you will determine the transfer function of the body (force/vibration), future differences in cross phase can help detect parameter variations: stiffness, damping, masses.
Multi point: cross phase show modal shape.

Ricardo Góz from Brazil