Glossary

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Term Definition
D/A
Data Acquisition
Hits: 731
DAB
Digital Audio Broadcasting
Hits: 721
DAB+
Digital Audio Broadcasting plus (upgrade to the DAB standard using HE-AAC v2 audio coding)
Hits: 665
DAC
Digital to Analogue Convertor
Hits: 662
DALS
Dedicated Line Access
Hits: 648
DAMA
Demand Assigned Multiple Access
Hits: 688
DAPSK
Differential Amplitude Phase Shift Keying
Hits: 680
DASS
Digital Access Signalling Standard
Hits: 687
DAT
Digital Audio Tape
Hits: 667
DATV
Direct Antenna Television
Hits: 640
DAVC
Digital Audio Video Council
Hits: 684
DAVIC
Digital Audio Video Council
Hits: 696
dB
Decibel
Hits: 652
dBc
Decibel relative to Carrier
Hits: 685
dBc/Hz
Decibel relative to Carrier in one Hz bandwidth (Phase noise)
Hits: 705
dBi
Decibel relative to isotropic source
Hits: 620
dBK
Decibel relative to 1 deg K
Hits: 663
dBm
Decibel Milliwatt
Hits: 644
dBm0
Decibel relative to 1mW at point of zero reference level
Hits: 797
dBm0p
as dBm0 but psophometrically weighted
Hits: 660
dBm0ps
as dBm0p but weighted for audio transmission
Hits: 701
dBmV
decibels relative to 1mV
Hits: 656
DBPSK
Differential Binary Phase-Shift Keying
Hits: 737
DBPT
Deutsche Bundespost Telecom
Hits: 668
DBS
Direct Broadcast Satellite
Hits: 694
dBuV
decibels relative to 1uV
Hits: 644
dBV
decibels relative to 1V
Hits: 632
dBW
Decibel Watt
Hits: 621
DC
Direct Current; Direct Coupler
Hits: 663
DCC
Direct Card Connect, Digital Compact Cassettes; Data Communications Channel
Hits: 680
DCD
Data Carrier Detect; Duty Cycle Distortion
Hits: 684
DCE
Data Communications Equipment: Data Circuit terminating Equipment
Hits: 635
DCM
Direct Connect Module
Hits: 705
DCN
Data Communications Network
Hits: 666
DCP
Data Communications Processor
Hits: 642
DCS
Diagnostic and Control System, Digital Cross-connect System
Hits: 642
DCT
Discrete Cosine Transform
Hits: 634
DD
Dolby Digital
Hits: 687
DDC
Digital Down Converter
Hits: 635
DDCMP
Digital Data Communications Message Protocol
Hits: 709
DDD
Direct long- Distance Dialling
Hits: 688
DDJ
Data Dependent Jitter
Hits: 613
DDS
Direct Digital Synthesis, Dataphone Digital Service: Digital Data Service
Hits: 655
DE
Discard Eligible
Hits: 674
DEA
Digital Encryption Algorithm
Hits: 607
DECT
Digital Enhanced Cordless Telecommunications
Hits: 627
DES
Data Encryption Standard
Hits: 687
DFB
Distributed Feedback
Hits: 703
DFM
Design For Manufactureability
Hits: 672
DFR
Digital Fault Recorder
Hits: 652
DFSK
Differential Phase Shift Keying
Hits: 660
DFT
Design For Test: Discrete Fourier Transform
Hits: 576
DHCP
Dynamic Host Configuration Protocol
Hits: 655
DIA
Data Interface Adapter
Hits: 621
DID
Direct Inward Dialing
Hits: 620
DIN
Deutsche Industrie Normen
Hits: 639
DisEqC
Digital Satellite Equipment Control
Hits: 570
DIU
Data Interface Unit
Hits: 665
DLC
Digital Loop Carrier: Data Link Control
Hits: 563
DLIC
Data Link Connection Identifier
Hits: 653
DLSw
Data Link Switching
Hits: 577
DM
Delta Modulation
Hits: 654
DMA
Direct Memory Access
Hits: 562
DMB
Digital Multimedia Broadcasting
Hits: 557
DMM
Digital MultiMeter
Hits: 598
DMS
Digital Multiplex Systems
Hits: 577
DMT
Design Maturity Testing; Discrete Multitone
Hits: 567
DNIC
Digital Network Interface Circuit
Hits: 598
DNS
Domain Name System ( Internet )
Hits: 599
DOC
Department of Communications
Hits: 597
DOCSIS
Data Over Cable Service Interface Specification
Hits: 626
DOPSK
Differential Offset Phase Shift Keying
Hits: 703
DOS
Disc Operating System
Hits: 570
DP
Dial Pulsing
Hits: 602
DPAK
Power Transistor Surface Mount Package
Hits: 547
DPCM
Differential Pulse Code Modulation
Hits: 576
DPDT
Double-Pole, Double-Throw ( switch )
Hits: 565
DPM
Digital Processor Module
Hits: 604
DPM2
Digital Processor Module 2
Hits: 594
DPN
Data Packet Network
Hits: 684
DPO
Dial Pulse Originate
Hits: 663
DPSK
Differential Phase Shift Keying
Hits: 571
DPT
Dial Pulse Terminate
Hits: 633
DQPSK
Differential Quadrature Phase Shift Keying
Hits: 561
DR.
Dynamic Range
Hits: 558
DRAGA
Dual Rate Adaption Gate Array
Hits: 577
DRAM
Dynamic Random Access Memory
Hits: 598
DRC
Dynamic Range Control
Hits: 556
DRM
Digital Radio Mondiale
Hits: 657
DS
Digital Signal
Hits: 641
DS-0
Digital Signal Level 0 (64Kbps), Usually single voice channel
Hits: 607
DS-1
Digital Signal Level 1 (1.554 Mbps) 24 voice or other data services
Hits: 629
DS-3
Digital Signal Level 3 (45 Mbps) 28 DS-1 circuits
Hits: 564
DS-SSMA
Direct Sequence-Spread Spectrum Multiple Access
Hits: 596
DS/CDMA
Direct Sequence CDMA
Hits: 640
DS/PPM
Direct Sequence Pulse Position Modulation
Hits: 598
DS0
Digital Service level 0
Hits: 620
DSB
Double Sideband Modulation
Hits: 590
DSBSC
Double Sideband Suppressed Carrier
Hits: 580
DSD
Direct Stream Digital
Hits: 571

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The Society for Broadband Professionals.
Communications House , 41a Market Street, Watford, Herts, WD18 0PN.