David.M, Jenne.D, Richard.M

We tested some of the electronics for the L4C geophones which are soon to be installed as an array. These were three L4C Concentrator Chassis (D1600144, labelled '1', '2', and '3' on front) and two L4C Interface Chassis (D1600148, labelled '1' and D1600152, labelled '2').

These are all working correctly. The only alteration made was to swap the 9 pin plugs for 'L4C 6' and 'L4C 7' on the board of Interface Chassis D1600148 (currently labelled as Interface Chassis '1' on front), since they were the wrong way around.

I've attached a pdf with the pin layout for each chassis for reference: