Technical data

Product Overview 1-3

• Audio output for optional external speaker

• Centronics parallel input/output

• SCSI (Small Computer Systems Interface)

Options include a 3-port Serial Input/Output (SIO) adapter for Domain/OS systems

and an HP-IB interface board for HP-UX systems. For systems that run HP-UX, you

can conﬁgure parameters for the RS-232, 802.3 network, Centronics parallel, and SCSI

interfaces by using the Boot ROM I/O conﬁguration program. (Refer to Appendix C

for information about using the conﬁguration program.)

1.1.2 Model 400dl Overview

The Model 400dl is identical to the Model 400t with the exception of the CPU board.

The Model 400dl CPU board doesn’t have the connectors necessary for internal or ex-

ternal disk drives and some I/O interfaces and memory. As a result, the Model 400dl

consists of the following conﬁguration:

• A monochrome 19-inch, 1280 x 1024, bit-mapped monitor and graphics con-

troller

• Eight- or 16-MB of memory, by using two or four 4-MB memory boards.

• 802.3 network (AUI or ThinLAN, jumper selectable on the CPU board)

• RS-232 (expandable with the optional 3-port adapter for Domain/OS systems)

• Domain keyboard

• HP-HIL keyboard and input device

• Audio output for optional external speaker

Note that the Model 400dl does not have SCSI or Centronics parallel external inter-

faces, and has only two memory conﬁgurations. In addition, the system does not use

the single interface slot for a network controller board or an HP-IB interface board.

Figure 1-1 shows a typical Model 400t or 400dl system.