User Manual

AS8100 Sitespan User Guide Version 3.7

605-0000-426

GSI 009

Draft Issue 6.0. Date 4/4/00

PHYSICAL CONNECTION TO FIXED ASSIGNMENT

AS4000

Use this procedure to provide interfaces to AS4000 Fixed Assignment shelves.

WARNING: When plugged into the modem shelf backplane, Sitespan becomes

the master controller and the shelf controller the slave. The

configuration file of Sitespan will automatically overwrite any

existing shelf controller configuration.

STEP PROCEDURE

Interface Connections

1. Connect each CT (Central Terminal) modem shelf to the Sitespan PC via a single RS-

232 cable (See Figure 6). A single 9 way or 25 Way D-Type connects to the PC and a

25 way D-Type connects to the modem shelf. The pinouts for an RS232 cross-over

cable are shown in Table 2.

Sitespan

Server

RS232 Links

Level Control Unit

Modem Shelf 4

Modem Shelf 3

Modem Shelf 2

Modem Shelf 1

RF Combiner

Shelf

Figure 6. AS8100 Sitespan: Connections to AS4000