User manual

Technical Reference
A-6 Campus-RS Fractional Interface Card User Manual
Connection pairs, circled in the table below, must be
connected to twisted pairs in the cable. Failure to do this may
result in data errors.
RS-449 to RS-449 DCE-DCE Crossover Cable
Mnemonic Pin Pin Mnemonic
RT+
RT-
8
26
17
35
TT+
TT-
TT+
TT-
17
35
8
26
RT+
RT-
RD+
RD-
6
24
4
22
SD+
SD-
SD+
SD-
4
22
6
24
RD+
RD-
DM+
DM-
11
29
12
30
TR+
TR-
TR+
TR-
12
30
11
29
DM+
DM-
RS+
RS-
7
25
13
31
RR+
RR-
RR+
RR-
13
31
7
25
RS+
RS-
Ground 19 19 Ground