Installation guide

Cabling Specifications A-25
Serial Cables
EIA/TIA-449 Four-Port Serial Module Cable Assembly
Figure A-5 shows the four-port EIA/TIA-449 cable assembly that is used on the NP-4T and
the high-speed serial ports on the NP-2T16S; Table A-10 lists the DTE pinouts; Table A-11
lists the DCE pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and
<— indicates DCE to DTE.
J1-4
J1-20
J2-7
J2-25
Twisted pair J1-6
J1-22
J2-7
J2-25
Twisted pair RTS+
RTS–
J1-37
J1-21
J2-8
J2-26
Twisted pair J1-49
J1-50
J2-8
J2-26
Twisted pair SCR+
SCR–
J1-17 J1-44 DCE
J1-22
J1-6
J2-27
J2-9
Twisted pair J1-20
J1-4
J2-27
J2-9
Twisted pair CTS–
CTS+
J1-8
J1-24
J2-11
J2-29
Twisted pair J1-41
J1-25
J2-11
J2-29
Twisted pair DSR+
DSR–
J1-41
J1-25
J2-12
J2-30
Twisted pair J1-8
J1-24
J2-12
J2-30
Twisted pair DTR+
DTR–
J1-10
J1-26
J2-13
J2-31
Twisted pair J1-10
J1-26
J2-13
J2-31
Twisted pair RLSD+
RLSD–
J1-43
J1-27
J2-17
J2-35
Twisted pair J1-37
J1-21
J2-17
J2-35
Twisted pair SCTE+
SCTE–
J1-36
J1-15
J2-19
J2-1
Twisted pair J1-36
J1-15
J2-19
J2-1
Twisted pair Ground
Chassis ground
J1-44
J1-48
J2-37
J2-20
Twisted pair J1-44
J1-48
J2-37
J2-20
Twisted pair Ground
Ground
Table A-9 Dual Serial Module EIA/TIA-449 DTE and DCE Cable Pinouts
72-0672-01 DTE Connection Table 72-0738-01 DCE Connection Table
50 Pin 37 Pin Type 50 Pin 37 Pin Type Signal Name