Ferrite Cylinders

Ferrite cylinders or beads installed on cables filter out line disturbances. They are required on some 326X models in some countries, as described in this section.

Caution

Install cables with the ferrite end adjacent to the modem.

The ferrite cylinder ensures that the unit operates in compliance with FCC RFI requirements.

Models 3261 and 3266 – Dial Line Connections

Two telephone cables with ferrite cylinders are included in the Model 3261 (U.S.A.) and the 3266 (Canada, Germany, U.K., and Japan) accessory kit. Con- nect the cables from the modem to 6- or 8-conductor dial-line connections.

Install the telephone cable. Figure 2-4shows the proper orientation. Figure 2-8, in the next section, shows how to connect the 3261/3266 modem.

Installing the Modem

Dial Line Cable

To Wall Jack

Ferrite

Figure 2-4. Attaching Ferrite Cable to the Modem

Models 3267 and 3268

Ferrite cylinders are required on:

Both dial line cables and on DTE cables on the 3267 V.34 Modem

Both audio (leased or dial) cables and on DTE cables on the 3268 V.34

Modem

Power cables on Modulus enclosures populated with 3267 and 3268 V.34

Modems

Network management cables on Modulus enclosures populated with 3267 and 3268 V.34 Modems

A cylinder is included with each cable that requires one. Follow the instructions below to ensure correct cylinder installation.

Installing the Modem 2-7

Page 41
Image 41
Motorola 326X V.34, and V.32bis manual Ferrite Cylinders, Models 3261 and 3266 Dial Line Connections, Models 3267, Modems