General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 3455-1982
Scope
The electrical characteristics specified in this Recommendation apply to interface circuits operating at data signaling rates below the 20 000 bit/s limit. This standard is technically completely consistent with CCITT Recommendation V.28.
GB/T 3455-1982 history
1982GB/T 3455-1982 Electrical characteristics for unbalanced double-current interchange circuits