Справочник Пользователя для Telenetics Modular Nest
Part No. TEL–09949, Rev A
June 2001
Pre-Installation Information and Activities
Page 16 of 34
Attaching Ferrite Beads (U.S.A., Canada, and Japan Only)
A cable with an attached ferrite is included in the accessory kit for U.S.A., Canada,
and Japan 326X Series Modem cards. In order to meet FCC Class A and CISPR
requirements, the ferrite side of the dial and leased line cables must be attached as
close to the backplane as possible (Figure 6).
and Japan 326X Series Modem cards. In order to meet FCC Class A and CISPR
requirements, the ferrite side of the dial and leased line cables must be attached as
close to the backplane as possible (Figure 6).
.
Figure 6. Attaching Ferrite Bead to Cable
Removing Audio Cable Connectors From a Modem Backplane
For compliance with safety standards, audio connectors (for dial and leased line
connections) on the 326X Series Modem backplane are recessed approximately
4 cm behind the sheet metal on the backplane (Figure 7).
connections) on the 326X Series Modem backplane are recessed approximately
4 cm behind the sheet metal on the backplane (Figure 7).
Figure 7. Releasing Backplane Audio Connectors
The ferrite side of the cable
should be located on the end
closest to the modem backplane.
Ferrites
DIAL LINE A
2W LEASE
DIAL LINE B
2W/4W LEASE
A8
A6
A4
A2
A9
A7
A5
A3
A1
B8
B6
B4
B2
B9
B7
B5
B3
B1
SLOT9
8
7
6
5
4
3
2