Allied Telesis AR Router Series, Hardware Reference Manual

Page: 74 / 111

74 AR Router
C613-03031-01 REV E
It is very important that the cables do not degrade EMC emission standards of the router
(e.g., FCC, CISPR). The cable foil shield must be connected to the AMPLIMITE
metalised backshell with a 360 degree ferrule. In addition, on specified cables, a clip-on
cable ferrite must be attached to the cable at the AMPLIMITE end, no more than 25 mm
from the rear of the backshell of the AMPLIMITE connector. Contact your authorised
Allied Telesyn distributor or reseller for a list of approved ferrites.
Table 34 on page 74 lists the wiring diagrams to follow when constructing
transition cables for each physical interface standard.
Table 34: Transition cable pin wiring diagrams.
Physical Interface Standard Pin Wiring Diagram
RS-232 DTE Figure 34 on page 75
RS-232 DCE Figure 35 on page 76
V.35 DTE Figure 36 on page 77
V.35 DCE Figure 37 on page 78
X.21 DTE Figure 38 on page 79
X.21 DCE Figure 39 on page 80