The ESE ES-185E is a GPS Master Clock/Time Code Generator. The unit receives accurate time and date information from Global Positioning System satellites and supplies this data to the user in a variety of forms. A 12-channel receiver is employed that is capable of tracking up to twelve satellites simultaneously, although reception of only one is required for time data to be output. ESE's ES-185E offers an accuracy of better than 10nS, and is entirely self-setting. The dual battery backup provides a Coin Cell for backing up the GPS receiver and User settings, and a Gel-Cell for a 4-hour operational backup. The ESE & ASCII outputs are operational when running on battery.