Satellite Technology Glossary

Satellite Technology Glossary

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There are 163 names in this directory beginning with the letter D.
D-MAC
Multiplexed Analog Component (TV, type D format)

D.A.T.E.
Duly Authorized Telecommunications Entity

d.p.
Drip-Proof

D/
Diameter/wavelength ratio

D/A
Digital to Analog

D/C
Downconverter

D/L
Downlink

D2-MAC
Multiplexed Analog Component (TV, type D2 format)

DA
Demand Assignment

DAC
Digital to Analog Converter

DACCS
Digital Access Cross-Connect System

DAIT
Demand Assigned International Terminal

DAMA
Demand Assigned Multiple Access

DAND
Despin Active Nutation Damper

DASCPC/QPSK
Demand Assigned Single-Channel-Per-Carrier/Quadrature Phase Shift Keying

DASS
Demand Assignment Signaling and Switching Unit

DATE
Duly Authorized Telecommunications Entity

DATTS
Data Acquisition Telecommand and Tracking Station

DAV
Data-Above-Voice

DAVC
Delayed Automatic Volume Control

dB OR DB
Decibel

dB/K
Decibels per Degree Kelvin

dBC
C-scale Sound Level in Decibels

dBm
Decibels Relative to one Milliwatt

dBm0
dBm referred to or measured at a point of zero transmission level(0TLP)

dBm0p
dBm Point psophometrically weighted referred to or measured at a point of zero transmission level (0TLP)

DBMS
Data Base Management System

DBP
Deutsche Bundepost (Germany)

DBS
Direct Broadcast Satellites

DBTR
Digital Bit Timing Recovery

dBV
Decibels Above 1 Volt

dBW
Decibels relative to one Watt

DC OR d.c.
DC Directional Coupler

DC/DC
Direct Current to Direct Current

DCA
Defense Communications Agency (USA)

DCC
Demand Assignment Call Connect

DCCC
Double-Current Cable Code

DCD
Data Carrier Detector

DCDR
Data Collection and Data Relay

DCE
Data Communications Equipment Data Circuit Terminating Equipment

DCM
Device Control Management

DCME
Digital Circuit Multiplication Equipment

DCME/DCMS
Digital Circuit Multiplication Equipment/System

DCN
Document Change Notice

DCP
Data Collection Platform

DCPSK
Differentially Coherent Phase Shift Keying

DCR
Document Change Request

DCRT
Data Collection Receive Terminal

DCS
Data Collection System

DCTL
Direct-Coupled Transistor Logic

DCTV
Despin Compartment Thermal Vacuum Test

DCU
Data Concentrator Unit

DD/C
Dual Downconverter

DDC
Double Downconverter

DDD
Direct Distance Dialing

DDF
Digital Distribution Frame

DDI
Direct Digital Interface

DDIE
Direct Digital Interface Equipment

DDP
Digital Data Processor

DDS
Digital Data System

DEC
Declination

DEF
Defined

DELTA
Launcher (McDonnell Douglas - USA)

Delta-P
Pressure Difference

Demod
Demodulator

Demux OR DEMUX
Demultiplexer

DES
Digital Encryption Standard

DET
Detector

DEV
Deviation

DF
Direction Finding

DFS
Domestic satellite network (Germany)

DG
Differential Gain

DGL
Device Independent Graphics Library

diac
Diode AC Switch

DID
Direct Inward Dialing

DIOS
Digital In-band Open-Look Synchronization

DIP
Dual In-line Package

DIRA
Digital Integrating Rate Assembly

DIRT
Decide-In-Real-Time commanding

DISC
Disconnect command

DITEC
Digital Television Communication System

DIUR
Diurrnal

DIV
Data-In-Voice

DLC
Data Link Receive (Timeplex)

DLE
Data Link Escape

DLF
Direct Through-Connection Filter

DM
Delta Modulation

DM/PSK
Delta Modulation/Phase Shift Keyed

DMA
Direct Memory Access

DME
Distance Measuring Equipment

DMM
Digital Multimeter

DMSP
Defense Meteorological Satellite Program (USA)

DNI
Digital Non-Interpolated

DNIC
Data Network Identification Code

DNTX
Do Not Transmit

DOC
Digital Operations Center

DOD
Department of Defense (USA)

DOM
Domestic

DOMP
Distributed Orbital Mechanical Process

DOMSAT
Domestic Satellite System

DOPSK
Differential Offset Phase Shift Keying

DOS
Disk Operating System

DOV
Data-Over-Voice

DOVAP
Doppler Velocity and Position

DP
Differential Phase

DPA
Destructive Physical Analysis

DPC
Data Processing Center

DPCM
Differential Pulse Code Modulation

DPDT
Double Pole Double Throw (switch)

DPL
Deployed

DPM
Digital Panel Meter

DPSK
Differential Phase Shift Keyed

DPST
Double Pole Single Throw (switch)

DPTC
Digital Program Track Controller

DPU
Data Processing Unit

DQPSK
Differential Quadrature PSK

DR
Data Rate

DRE
Directional Reservation Equipment

DRGS
Direct Readout Ground Station

DRL
Contract Data Requirements List

DRO
Dielectric Resonator Oscillators

DRP
Directional Radiated Power

DRS
Direct Reception Station

DRT
Data Recording Terminal

DS
Data Speech

DS-3
Digital Signal 3

DS1, etc.
Digital Services

DSB
Direct Sounding Broadcast

DSB-SC-AM
Double Sideband-Suppressed Carrier-Amplitude Modulation

DSB-SC-AM w/QM
Double Sideband-Suppressed Carrier-Amplitude Modulation with Quadrature Multiplexing

DSB-SC-ASK
Double Sideband-Suppressed Carrier-Amplitude Shift Keyed

DSCS
Defense Satellite Communications System (USA)

DSDU
Despun Squib Driver Unit

DSE
Data Switching Exchange

DSI
Digital Speech Interpolation

DSI-AC
Digital Speech Interpolation Assignment Channel

DSIP
DS Interface Package

DSL
Deep Scattering Layer

DSM
Dual Synchronous Module

DSMDU
Despun Stepper Motor Driver Unit

DSN
Domestic satellite network (Israel)

DSP
Define Switch Parameter (Timeplex)

DSR
Data Set Ready

DSS
Digital Sun Sensor

DST
Direct Sounding Transmission

DSU
Disk Storage Unit

DTC
Detection Threshold Computer

DTE
Data Terminal Equipment

DTI
Data Transfer Interface

DTL
Diode-Transistor Logic

DTM
Digital Termination Module

DTMF
Dual Tone Multiple Frequency

DTP
Detailed Test Plan

DTR
Down-Time Ratio

DUC
Double Upconverter

DUS
Data Utilization/User Station

DUT
Device Under Test

DUV
Data Under Voice

DVLP
Development Center (Intelsat's)

DVM
Digital Volt Meter

DVT
Design Verification Test

DWN
Down

DX or dx
DX Distance reception