The ES-188 is an NTP referenced Master Clock and Time Code Generator. It displays nine digits (Day of Year, Hour, Minute & Second) of time as received via a user selected NTP server. Simultaneously, the ES-188 generates several types of time code (SMPTE LTC, ESE-TC89, ESE-TC90, USB, RS232C/ASCII, EBU and IRIG-B) and a 1PPS signal. These outputs allow the ES-188 to easily interface with new or existing computers, automation and clock systems. Software supplied with the ES-188 permits users to continuously update a computer's Windows® clock to the time available on the USB port. Other features allow the user to select SMPTE mode (DF, NDF, EBU & Real Time), offset the Time Zone displayed and output by the ES-188 and advance or delay the time output for various synchronizing purposes.