Compaq 4200 Family manual Scsi Bus Connectors, Scsi Bus Termination, Status Displays

I/O Module 3–3

SCSI Bus Connectors

The 68-pin VHDCI connector enables you to configure the enclosure as single-bus, single initiator subsystem.

SCSI Bus Termination

A SCSI bus is defined by two bus terminators. The external bus has terminators on the controller and on the module. Each internal bus has a terminator on the module and on the backplane. The module connects the external bus and the internal bus together. On each module, there is a green LED (see Figure 3–2) that defines the status of internal bus, backplane terminator.

Status Displays

See Figure 3–2 for the location of the two green status LEDs, and Table 3–1 for a description of the LED displays.

2

1

CXO6983A

1Terminator Status LED 2Power or Locate LED

Figure 3–2. Single Bus Status LEDs