Fast Ethernet Adapter Installation and Support Guide

Glossary
Fast Ethernet Adapter Installation and Support Guide—425685-003
Glossary-21
dB
dB. See decibel (dB).
dBm. Decibels as referenced to a milliwatt. A unit of measure that establishes 0 dBm equal
to 1 milliwatt. A negative value represents a decrease in power, and a positive value
represents an increase in power. See also decibel (dB).
DC. See direct current (DC).
DCE. See data communications equipment (DCE).
DCF. See dynamic configuration file (DCF).
DC power cable. In system enclosures with power shelves, a cable that delivers DC power
from the power shelf to a processor multifunction (PMF) customer-replaceable unit
(CRU) or I/O multifunction (IOMF) CRU in that enclosure.
decibel (dB). A unit of measure used to express a relative difference in power. A negative
value represents a decrease in power, and a positive value represents an increase in
power.
dedicated Compaq TSM LAN. An Ethernet local area network (LAN) for use by only
Compaq TSM applications. This LAN connects TSM workstations with the Ethernet
ports on the processor multifunction (PMF) customer-replaceable units (CRUs) in
group 01 of an HP NonStop™ S-series server. A dedicated Compaq TSM LAN
supports NonStop S-series servers and TSM workstations but does not support any
other types of servers or workstations. See also public LAN.
DEFINE. An HP Tandem Advanced Command Language (TACL) command you can use to
specify a named set of attributes and values to pass to a process.
DEFINES paragraph. An optional paragraph in the CONFTEXT configuration file that
contains one or more identifiers, each with its associated text string. The DEFINES
paragraph, if used, precedes the ALLPROCESSORS paragraph.
delta. A method for connecting a 3-phase power source (or load) in a closed series loop
with input (or output) connections made to each of the three junctions. The delta’s
physical arrangement resembles the delta character from the Greek alphabet.
demon. On a UNIX system, a process that runs continuously to provide a specific service
for other processes. A demon does not have a controlling terminal and is not explicitly
invoked. On an HP NonStop™ system, a demon runs in the Open System Services
(OSS) environment and has an OSS process ID. See also static server.
destination ServerNet ID (DID). A field in the ServerNet packet header indicating the
intended destination for the packet.
detailed report. A complete listing of status or configuration information provided by the
Subsystem Control Facility (SCF) STATUS or INFO command when you use the
DETAIL option. Contrast with summary report.