The ES-160E is a Master Clock/Time Code Generator. The unit employs a voltage controlled/temperature compensated crystal oscillator which provides the ES-160E with an accuracy of one second per month. Six .56" yellow LEDs display real time while the unit simultaneously generates several types of time (and date) code (SMPTE-LTC/EBU, ESE-TC89, ESE-TC90 and RS232C/ASCII) and a 1 PPS signal. An optional ethernet NTP (Network Time Protocol) port may be specifi ed (ES-160E/NTP6) allowing the clock to be an NTP server and providing clock set-up via a LAN. Since the ES-160E is a completely self-contained unit with no link to GPS, USNO or WWV, it is a practical alternative where users have a concern over the "availability" of such time references. The ES-160E is designed as a "primary" Master Clock. However, the unit is an excellent choice for use as a "secondary" Master Clock in a system utilizing an Automatic Master Clock Switcher (ES-150U) and any other Master Clockm with a SMPTE-LTC/EBU or ESE Time Code output.