標準號：IS 8969-1978
發布日期：1979/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard covers installation and maintenance of electric clock system of both electronic and impulse type.1.2 Time recording equipment and audible time system are excluded from the scope of this code.Note 1 —The expression electric clock system here denotes a system controlled from a central source forming part of the system.Note 2 — It does not fall within the scope of this code to make recommendation in details regarding the type or design of the various appliances that form the principal components of impulse/electronic clock systems nor does it fall within the scope of this code to make recommendations regarding the standard of performance of such equipment.