Comtest-networks MTAS-192 METALLIC TEST ACCESS SYSTEM Manual de usuario descargar pdf (Pagina 52)

Comtest Networks

CT-IG-MTAS192-2008-v1_8.doc

MTAS-192

Installation Guide May 2008

Inter-Shelf Communications Link (ISCL) Cabling

Standard straight-though 10/100BaseT Ethernet cabling is used to daisy-chain the

MTAS Inter-Shelf Communications Link (ISCL) between MTAS chassis. The COMM 1

RJ-45 connector of one shelf is connected to the COMM 2 RJ-45 connector of the next

shelf until the last shelf on the daisy chain has been connected as shown in Figure 31.

Shielded 8-wire CAT5 cable must be used for the ISCL installation. The COMM 1 and

COMM 2 RJ-45 jacks are shielded and tied to the chassis ground to accommodate

shielded RJ-45 plugs. On the last shelf in the daisy-chain, the ISCL bus terminator

(dongle) is inserted in COMM 1.

The ISCL cabling sequence for a full daisy-chained system (12 chassis) is listed in

Table 18.

Table 18: ISCL Cabling Sequence

Connect from: To:

Master COMM 1 Slave 1 COMM 2

Slave 1 COMM 1 Slave 2 COMM 2

Slave 2 COMM 1 Slave 3 COMM 2

Slave 3 COMM 1 Slave 4 COMM 2

Slave 4 COMM 1 Slave 5 COMM 2

Slave 5 COMM 1 Slave 6 COMM 2

Slave 6 COMM 1 Slave 7 COMM 2

Slave 7 COMM 1 Slave 8 COMM 2

Slave 8 COMM 1 Slave 9 COMM 2

Slave 9 COMM 1 Slave 10 COMM 2

Slave 10 COMM 1 Slave 11 COMM 2

Slave 11 COMM 1 ISCL Terminator Dongle

IMPORTANT: When using shielded cable, ensure devices on either end of the cable

have the same reference ground (earth / chassis / frame ground) in order to prevent

ground loops.

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 71 72

Sin comentarios

Comtest-networks MTAS-192 METALLIC TEST ACCESS SYSTEM Manual de usuario Pagina 52