Power outages or failures can cause unsynchronized clocks to become inaccurate. Each clock must then be corrected individually. Master clock systems automatically obtain accurate time from hardware references such as GPS. Within minutes of the power being restored, slave clocks will be back up and running. Often no operator intervention is required.
Master clock systems provide many advantages over traditional unsynchronized clocks. They are easy to install and are virtually maintenance free. Also, using GPS time, they provide a high degree of accuracy and require no adjustment or manual user intervention.