The ES-292 is a very accurate portable GPS Time Code Generator. The unit receives time and date information from Global Positioning System satellites and outputs IRIG-B and ASCII (RS-232C) Time Codes. Two (2) One Pulse Per Second outputs and a GPS "Lock" output are also standard features. A twelve-channel receiver is employed that is capable of tracking up to twelve (12) satellites simultaneously, although reception of only one is required for time data to be output. Unit free-runs using internal TCXO in absence of GPS signal. A separate GPS receiver power switch is provided for conserving battery power during free-run operation. Several options are available.