Port Modules; Rs-232 Rj45 Port Module; Metrics Equivalent - HP AD278A Support Manual

Port Modules

A port module is an interface between the AD279A PCI MUX 64-port adapter and the RS-232
peripheral device.
MUX 64-port adapter.
Table 1-6 Port Modules
Product Number
AD280A
AD281A
Each AD279A PCI MUX 64-port adapter supports a maximum of four port modules (64 ports)
connected together. The RS-232 RJ45 port module (AD280A) and RS-232 DB25 port module
(AD281A) can be intermixed using an EBI cable. The DB25 connectors are male.
NOTE: The pin assignments on the RJ-45 ports are incompatible with the RJ-45 pin assignments
used on the older A6748A/A6749A PCI MUX products.
Cables used to connect port modules two, three, and four are known as EBI cables. Each EBI
cable is one feet (0.30480 metre) in length. The RJ45 and DB25 port modules use the same EBI
cable. The AD280A and the AD281A use the same power supply (AD280-2001A).
NOTE:
The AD279A PCI MUX 64-port adapter can support 2 port modules or up to 32 port
configurations without the port module power supply. The port module power supply is required
on the third port module and the fourth port module or 33 through 64 port configurations.
Figure 1-3 shows a PCI MUX 16-port RS-232 RJ45 port module.
Figure 1-3 RS-232 RJ45 Port Module
Table 1-7 lists the metrics equivalent.
Table 1-7 Metrics Equivalent
Inches
12
7
2.25
Figure 1-4 shows a PCI MUX 16-port RS-232 DB25 port module.
Table 1-6 lists the port modules that can be connected to the AD279A PCI
Description
HP 16-port RS 232 RJ-45 port module
HP 16-port RS 232 DB-25 port module
Interface
RS-232 RJ-45
RS-232 DB-25
Centimetre
30.480
17.780
5.715
AD278A/AD279A PCI Multiplexer Components
Number of Ports
16
16
11