
82 APPENDIX A: PINOUTS AND INTERFACE SPECIFICATIONS
Table A-7 EIA-530 Interface Specifications
Signal Name Abbreviation Pin #
Shield ----- 1
Transmitted Data BA (A) / BA (B) 2 / 14
Received Data BB (A) / BB (B) 3 / 16
Request to Send CA (A) / CA (B) 4 / 19
Clear to Send CB (A) / CB (B) 5 / 13
DCE Ready CC (A) / CC (B) 6 / 22
DTE Ready CD (A) / CD (B) 20 / 23
Signal Ground AB 7
Received Line
Signal Detector
CF (A) / CF (B) 8 / 10
Transmit Signal
Element Timing
(DCE Source)
DB (A) / DB (B) 15 / 12
Receiver Signal
Element Timing
(DCE Source)
DD (A) / DD (B) 17 / 9
Transmit Signal
Element Timing
(DTE Source)
DA (A) / DA (B) 24 / 11
igure A-3 DB-25 Connector
113
25 14
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