The acoustic release alternately fires one of two available burnwires for release. Hz vertical-component geophone mounted in separate pressure case. Clock Seascan Precision Timebase. Disk Capacity 9 GB hard disk Data Offload SCSI transfer of data can be done through the end cap without opening the pressure case for experiments in which rapid deployments are necessary. Battery Pack Batteries are mounted in the data logger pressure case.
Separate batteries power the acoustic release.
Rechargeable NiCAD batteries can provide power for experiments with durations of no more than 5 days.