NonStop System Glossary

ECL ServerNet cable
See emitter-coupled logic (ECL) ServerNet cable.
EDIT file
In the Guardian file system, an unstructured file with file code 101. An EDIT file can be processed
by either the EDIT or PS Text Edit (TEDIT) editor. An EDIT file typically contains source program or
script code, documentation, or program output. Open System Services (OSS) functions can open
an EDIT file only for reading.
effective group ID
An attribute of an Open System Services (OSS) process that is used to determine permissions such
as the file access allowed for the process. The effective group ID of a process is a group ID that
contributes to the group access privileges of that process. The effective group ID of a process might
be used to set the group ID of files created by that process. The effective group ID can be changed
while the process runs.
effective user ID
An attribute of an Open System Services (OSS) process that is used to determine such permissions
as the file access allowed for the process. The effective user ID of a process is the user ID that
determines the owner access privileges of that process. The effective user ID of a process might
be used to set the user ID of files created by that process. The effective user ID can be changed
while the process runs.
EIA
Electronic Industries Association.
eld utility
A utility that collects, links, and modifies code and data blocks from one or more
position-independent code (PIC) object files to produce a target TNS/E native object file. See also
ld utility and nld utility.
electric utility
The local utility service that, for a fee, supplies alternating-current (AC) power to businesses and
residences.
electromagnetic interference (EMI)
Forms of conducted or radiated interference that might appear in a facility as either normal or
common-mode signals. The frequency of the interference can range from the kilohertz to gigahertz
range. However, the most troublesome interference signals are usually found in the kilohertz to
low megahertz range. At present, the terms electromagnetic interference and radio frequency
interference (RFI) are usually used interchangeably.
electrostatic discharge (ESD) protection kit
A kit containing an antistatic mat and a wriststrap with a cable and grounding clip. A service
provider or customer wears the wriststrap while performing maintenance procedures inside an
enclosure. The wriststrap and cable contain grounding wires. When the grounding clip is attached
to a metal object, such as the enclosure, the person wearing the wriststrap is grounded. Any static
electricity incurred during the procedure is discharged safely to the ground instead of to electrical
components within the enclosure.
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