Keep compatible clocks aligned to an agreed master time source. Clock protocol, wiring or network, power and recovery after interruption are checked rather than assuming every clock can be synchronised.
Conceptual Master / Digital Clock product and system illustration for School Systems. Final device form, model, interfaces and quantities are confirmed from the assessed scope and approved product data. Conceptual source-to-audience signal path for Master / Digital Clock, derived from this page's scope, interfaces and acceptance record.
Conceptual planning path — not an as-built drawing or project photograph.
Keep compatible clocks aligned to an agreed master time source. Clock protocol, wiring or network, power and recovery after interruption are checked rather than assuming every clock can be synchronised.
It sits in School Bell / Clock under School Systems. The final deliverable is shaped by the intended outcome, the installed or proposed environment and the interfaces that must be owned, supplied, integrated and tested.
Keep compatible clocks aligned to an agreed master time source. Clock protocol, wiring or network, power and recovery after interruption are checked rather than assuming every clock can be synchronised. Collect normal, holiday and exception timetables, zone destinations, clock or speaker identity, supported outputs, master time source and the person authorised to change schedules.
From the initial brief to the handover record: what to prepare, check and confirm with HJ.
Define School Systems as the operating result for Master / Digital Clock, including the users, process and exceptions it must serve.
Keep compatible clocks aligned to an agreed master time source. Clock protocol, wiring or network, power and recovery after interruption are checked rather than assuming every clock can be synchronised.
For Master / Digital Clock, confirm calendar, periods and exceptions, zones, audible coverage and sources, master time, override and schedule authority.
Collect normal, holiday and exception timetables, zone destinations, clock or speaker identity, supported outputs, master time source and the person authorised to change schedules.
Map Source → Signal processing & control → Distribution → Presentation & operator handover for Master / Digital Clock and identify every interface owned by HJ, the customer, ISD supply or an appointed specialist.
Schedule accuracy depends on an owned calendar and time source; ordinary bells and PA are separate from emergency voice systems. Final models, capacities and quantities still follow survey, compatibility and availability.
A correct timetable depends on calendar ownership, time configuration and working outputs. Compatible IP features are not universal, and ordinary bells or paging do not replace a specified emergency system.
For Master / Digital Clock, record normal, holiday and special timetables, zone, tone and override, time synchronisation and power recovery; also agree source-to-output signal test, zone, scene or input recall, operator control and handover before handover.
Test sample normal and exception schedules, selected zones, manual override and supported time synchronisation. Record recovery behaviour after interruption and hand over schedule-edit ownership.
HJ coordinates assessment, engineering, installation, integration, testing and lifecycle support only for the scope recorded in the quotation. ISD handles catalogue, model, datasheet, supply and availability enquiries. Customer, consultant, builder and appointed-specialist responsibilities remain explicit.
Final scope, quantities, compatibility, access, programme, availability and responsibility are confirmed during assessment and quotation.
This focused topic remains connected to its complete system owner. Final models, quantities, interfaces and included work are confirmed in the assessed quotation.
See related systems, how HJ installs them, and support for equipment you already have.
Use the answers as a planning boundary; site conditions and written scope remain decisive.
Master / Digital Clock focuses on School Systems within School Systems. Distributes scheduled tones, announcements or synchronised time to zones under an owned academic or shift timetable. The approved selection must respect this boundary: Schedule accuracy depends on an owned calendar and time source; ordinary bells and PA are separate from emergency voice systems.
Confirm calendar, periods and exceptions, zones, audible coverage and sources, master time, override and schedule authority. Record normal, holiday and special timetables, zone, tone and override, time synchronisation and power recovery, then complete source-to-output signal test, zone, scene or input recall, operator control and handover against the approved scope.
No. HJ handles engineering, installation and integration. ISD handles product-family, model, datasheet, supply and availability enquiries separately.
Tell us where it will be used, what it needs to do and what equipment you already have. HJ will recommend the right system, explain who is responsible for what, and agree the next step with you.