This British Standard specifies the pin code configurations and contact arrangements for signalling equipment that uses BR 829 [1] plugboards.Cross References:BR 940:1972BR 943:1971BR 937:1971/AMD:1992BR 933:1971/AMD:1992BR 942:1972BR 940:1972/AMD:1992BR 961:1972/AMD:1992BR 966:1981/AMD:1992BR 938:1971/AMD:1992BR 960:1981BR 966:1981BR 935:1971BR 933:1971BR 946:1980/AMD:1992BR 939:1971BR 941:1972BR 938:1971BR 935:1971/AMD:1992BR 962:1972BR 948:2001BR 936:1971/AMD:1992BR 947:1965/AMD:1993BR 941:1972/AMD:1992BR 945:1981BR 963:1971 BR 939:1971/AMD:1992BR 934:1971BR 960:1981/AMD:1992BR 963:1971/AMD:1992BR 991:1980BR 991:1980/AMD:1983BR 930:1981BR 932:1971/AMD:1992BR 968:1971BR 829:1981BR 943:1971/AMD:1992 BR 949:1972/AMD:1985BR 932:1971BR 947:1965BR 936:1971BR 946:1980BR 934:1971/AMD:1992BR 930:1981/AMD:1992BR 931:1971 BR 942:1972/AMD:1992BR 945:1981/AMD:1992BR 937:1971BR 968:1971/AMD:1992BR 961:1972BR 962:1972/AMD:1992BR 931:1971/AMD:1992BR 949:1972Incorporates the following:Amendment, January 2020; Corrigendum, March 2019