Toshiba CTX28 manual Rrcu

Clamp Bracket

For Spiral Tube

Rack Mount Cabinets

Remote Expansion Cabinet Unit

Remote Expansion Cabinet Unit

The RRCU1A PCB enables a Rack Mount Expansion Cabinet to be located up to three kilometers from its Base Cabinet. One RRCU1A connects to up to two ribbon-type Data Cables and applies the inter-cabinet signal to a fiber-optic pair. One fiber pair can support one or two expansion cabinets in one remote location using one RRCU1A in the Base Cabinet and another in the Remote Expansion Cabinet.

All instructions apply to both the Base Cabinet and the Remote Expansion Cabinet except where specifically noted.

Note See “Remote Expansion Cabinet Unit” on page 4-55for additional information.

Remote Cabinet Installation Instructions

1.Install cabinets according to the instructions given at the beginning of this chapter. Pay particular attention to wiring and grounding instructions given for Remote Expansion Cabinets.

2.If installing a standalone Remote Expansion Cabinet, or the first in a stack, set the “BASE/ EXP” switch to “BASE” in accordance with Figure 5-12.

3.Cabinets in which RRCU cards are installed must be modified to protect the routing of the cables through the cabinet.

•Attach the plastic guide to the bracket provided with the RRCU1A card (shown right).

•Attach the bracket to the wall of the cabinet.

4.Install the RRCU Card (see Figure 4-36 on page 4-53for a detailed description of

RRCU)

•Select correct jumper options. On the Master side, both option plugs connect

the center pin to the upper pin (M1,

M2). On the Slave side, both option

plugs connect the center pin to the lower pin (S1, S2).

Optical Fiber

Spiral Tube

•Remove the protective rubber cap from the fiber connector on the ROMS1A daughter board.

Important! When installing the RRCU, be sure to put the card in the slot before attaching the data cables. Detach the data cable before removing an RRCU1A. Failure to do so may cause interference with other data highways.

5.Insert the cards

•On the Master side, the RRCU card may be installed in Slots 1~8.

•On the Slave side, the RRCU card may be installed in Slots 1~10.

•The RRCU1A is a non-timeslot card and can be installed in slots normally left vacant adjacent to digital trunk cards.

Rack Mount Cabinets

Strata CTX I&M 06/04 5-35