A-8
CRBRIM-W/E
Appendix A: Cabling Specifications
A.2.3 RS-449
Figure A-3 shows the RS-449 cable assembly; Table A-5 lists the DTE pinout;
Table A-8 lists the DCE pinout. Arrows indicate signal direction: —> indicates
DTE to DCE, and <— indicates DCE to DTE.
Figure A-3. RS-449 Cable Assembly
Table A-5. RS-449 DTE Cable Pinout (DB-60 to DB-37)
60
Pin
1
Signal
Note
Direction
37 Pin
Signal
J1-49
J1-48
MODE_1
GND
Shorting Group
–
–
–
J1-51
J1-52
GND
MODE_DCE
Shorting Group
–
–
–
J1-46
Shield_GND
Single
_
J2-1
Shield GND
J1-11
J1-12
TxD/RxD+
TxD/RxD–
Twisted pair no. 6
—>
—>
J2-4
J2-22
SD+
SD–
J1-24
J1-23
TxC/RxC+
TxC/RxC–
Twisted pair no. 9
<—
<—
J2-5
J2-23
ST+
ST–
H1973
60-pin connector (J1)
37-pin connector (J2)
Connectors are not to scale
J2-19
J2-37
J2-20
J2-1
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60