ESE ES103 IRIG-B Master Clock

The ES-103 is a GPS-referenced master clock and time code generator that pulls precise time and date straight from the Global Positioning System satellite constellation. A twelve-channel receiver tracks up to twelve satellites at once, though a lock on a single satellite is all it needs to keep the house clock honest. The result is a facility timing reference that never drifts and never needs setting, feeding synchronized time to displays, automation, and timers across a plant.

The unit distributes that reference in every code a broadcast or industrial facility is likely to want: IRIG-B (or IRIG-E), ASCII over RS-232C, and ESE's own TC89 and TC90 serial formats. Two one-pulse-per-second outputs and a GPS lock output round out the back panel for hardware that needs a raw timing edge or a status signal. A front LED reads out day of year plus hours, minutes, and seconds so operators can confirm the reference at a glance.