Glossary

C-Size Card

A VXIbus instrument module that is 340.0 ⋅ 233.4 mm ⋅ 30.48 mm (13.4 ⋅ 9.2 in ⋅ 1.2 in).

Custom Device

A special-purpose VXIbus device that has configuration registers so as to be identified by the system and to allow for definition of future device types to support further levels of compatibility.

Data Transfer Bus

One of four buses on the VMEbus backplane. The Data Transfer Bus allows Bus Masters to direct the transfer of binary data between Masters and Slaves.

Delta Temperature

The difference between the exhaust temperature of a given slot within the IntelliFrame Mainframe and the input air temperature.

Device Specific Protocol

A protocol for communication with a device that is not defined in the VXIbus specification.

D-Size Card

A VXIbus instrument module that is 340.0 ⋅ 366.7 mm ⋅ 30.48 mm (13.4 ⋅ 14.4 in ⋅ 1.2 in).

DTB

See Data Transfer Bus.

DTB Arbiter

A functional module that accepts bus requests from Requester modules and grants control of the DTB to one Requester at a time.

DUT

Device Under Test.

ECLTRG

Six single-ended ECL trigger lines (two on P2 and four on P3) that function as inter-module timing resources, and that are bussed across the VXIbus subsystem backplane. Any module, including the Slot 0 module, may drive and receive information from these lines. These lines have an impedance of 50 W; the asserted state is logical High.

Embedded Address

An address in a communications protocol in which the destination of the message is included in the message.

ESTST

Extended STart/STop protocol; used to synchronize VXIbus modules.

VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual

Glossary±3