User`s manual

Configuring the Agilent E8462A Multiplexer 15
Configuring the Multiplexer Module
The Multiplexer module can be configured to the operating modes through
the VXIplug&play driver or via SCPI commands. These drivers are located
on the supplied CD-ROM. Before installing the module into a VXIbus
mainframe (e.g. Agilent E1401A), you need to set the Multiplexer’s logical
address.
Setting the Logical
Address
The factory default logical address switch setting is 112. Valid addresses are
from 1 to 254 for static configuration and address 255 for dynamic
configuration. The Agilent E8462A supports dynamic configuration of the
address. This means the address is set programmatically by the resource
manager when it encounters a module with address 255.
The logical address must be a multiple of eight (e.g., 112, 120, 128, etc.)
when using a VXIbus command module. An instrument must have a unique
secondary address which is the logical address divided by eight. When
multiple modules are used for form a “switchbox”, the logical addresses
must be sequential with the first module address being a multiple of eight.
See Figure 1-13. "Card Numbers in a Multiple-module Configuration" on
page 30 for more information.
Refer to the C-Size VXIbus System Installation and Getting Started Guide
for addressing information. Figure 1-2 shows the logical address switch
position. You access the address switch through the air hole on the edge of
the module. The label on the side cover identifies the switch location.
Figure 1-2. Setting the Logical Address
Logical Address Switch
Factory default setting = 112