David.M, Jenne.D, Jeff.B

This morning we set up 6 L4Cs in the 'beer garden' area of the LVEA. They are positioned close to the STS-2 there, with three on the concrete and three on the linoleum surface (see attached photo). This should enable us to determine the effect of the linoleum coating on the L4C output spectrum.

I've attached a screenshot from Diagnostic Test Tools plotting the power spectrum of all 30 L4C channels. Only the 7th L4C channel (H1:NGN-CS_L4C_Z_7_OUT) shows a seismic response. The other channels only show ADC noise, however there should be 6 sensors connected. Early tomorrow morning I'll perform some checks to try and diagnose where the problem is.