Glossary

Term	Main definition
D/A	Data Acquisition Hits - 968
DAB	Digital Audio Broadcasting Hits - 941
DAB+	Digital Audio Broadcasting plus (upgrade to the DAB standard using HE-AAC v2 audio coding) Hits - 891
DAC	Digital to Analogue Convertor Hits - 902
DALS	Dedicated Line Access Hits - 862
DAMA	Demand Assigned Multiple Access Hits - 921
DAPSK	Differential Amplitude Phase Shift Keying Hits - 911
DASS	Digital Access Signalling Standard Hits - 911
DAT	Digital Audio Tape Hits - 898
DATV	Direct Antenna Television Hits - 878
DAVC	Digital Audio Video Council Hits - 912
DAVIC	Digital Audio Video Council Hits - 924
dB	Decibel Hits - 872
dBc	Decibel relative to Carrier Hits - 911
dBc/Hz	Decibel relative to Carrier in one Hz bandwidth (Phase noise) Hits - 947
dBi	Decibel relative to isotropic source Hits - 855
dBK	Decibel relative to 1 deg K Hits - 884
dBm	Decibel Milliwatt Hits - 871
dBm0	Decibel relative to 1mW at point of zero reference level Hits - 1109
dBm0p	as dBm0 but psophometrically weighted Hits - 861
dBm0ps	as dBm0p but weighted for audio transmission Hits - 977
dBmV	decibels relative to 1mV Hits - 859
DBPSK	Differential Binary Phase-Shift Keying Hits - 955
DBPT	Deutsche Bundespost Telecom Hits - 883
DBS	Direct Broadcast Satellite Hits - 905
dBuV	decibels relative to 1uV Hits - 883
dBV	decibels relative to 1V Hits - 855
dBW	Decibel Watt Hits - 833
DC	Direct Current; Direct Coupler Hits - 866
DCC	Direct Card Connect, Digital Compact Cassettes; Data Communications Channel Hits - 894
DCD	Data Carrier Detect; Duty Cycle Distortion Hits - 909
DCE	Data Communications Equipment: Data Circuit terminating Equipment Hits - 847
DCM	Direct Connect Module Hits - 915
DCN	Data Communications Network Hits - 866
DCP	Data Communications Processor Hits - 856
DCS	Diagnostic and Control System, Digital Cross-connect System Hits - 856
DCT	Discrete Cosine Transform Hits - 850
DD	Dolby Digital Hits - 932
DDC	Digital Down Converter Hits - 859
DDCMP	Digital Data Communications Message Protocol Hits - 916
DDD	Direct long- Distance Dialling Hits - 899
DDJ	Data Dependent Jitter Hits - 843
DDS	Direct Digital Synthesis, Dataphone Digital Service: Digital Data Service Hits - 868
DE	Discard Eligible Hits - 902
DEA	Digital Encryption Algorithm Hits - 834
DECT	Digital Enhanced Cordless Telecommunications Hits - 832
DES	Data Encryption Standard Hits - 907
DFB	Distributed Feedback Hits - 913
DFM	Design For Manufactureability Hits - 883
DFR	Digital Fault Recorder Hits - 872
DFSK	Differential Phase Shift Keying Hits - 874
DFT	Design For Test: Discrete Fourier Transform Hits - 791
DHCP	Dynamic Host Configuration Protocol Hits - 840
DIA	Data Interface Adapter Hits - 797
DID	Direct Inward Dialing Hits - 790
DIN	Deutsche Industrie Normen Hits - 828
DisEqC	Digital Satellite Equipment Control Hits - 736
DIU	Data Interface Unit Hits - 851
DLC	Digital Loop Carrier: Data Link Control Hits - 755
DLIC	Data Link Connection Identifier Hits - 843
DLSw	Data Link Switching Hits - 747
DM	Delta Modulation Hits - 831
DMA	Direct Memory Access Hits - 751
DMB	Digital Multimedia Broadcasting Hits - 736
DMM	Digital MultiMeter Hits - 787
DMS	Digital Multiplex Systems Hits - 757
DMT	Design Maturity Testing; Discrete Multitone Hits - 734
DNIC	Digital Network Interface Circuit Hits - 763
DNS	Domain Name System ( Internet ) Hits - 778
DOC	Department of Communications Hits - 780
DOCSIS	Data Over Cable Service Interface Specification Hits - 826
DOPSK	Differential Offset Phase Shift Keying Hits - 890
DOS	Disc Operating System Hits - 751
DP	Dial Pulsing Hits - 777
DPAK	Power Transistor Surface Mount Package Hits - 703
DPCM	Differential Pulse Code Modulation Hits - 737
DPDT	Double-Pole, Double-Throw ( switch ) Hits - 721
DPM	Digital Processor Module Hits - 782
DPM2	Digital Processor Module 2 Hits - 758
DPN	Data Packet Network Hits - 852
DPO	Dial Pulse Originate Hits - 849
DPSK	Differential Phase Shift Keying Hits - 741
DPT	Dial Pulse Terminate Hits - 822
DQPSK	Differential Quadrature Phase Shift Keying Hits - 735
DR.	Dynamic Range Hits - 746
DRAGA	Dual Rate Adaption Gate Array Hits - 766
DRAM	Dynamic Random Access Memory Hits - 774
DRC	Dynamic Range Control Hits - 725
DRM	Digital Radio Mondiale Hits - 844
DS	Digital Signal Hits - 849
DS-0	Digital Signal Level 0 (64Kbps), Usually single voice channel Hits - 766
DS-1	Digital Signal Level 1 (1.554 Mbps) 24 voice or other data services Hits - 803
DS-3	Digital Signal Level 3 (45 Mbps) 28 DS-1 circuits Hits - 733
DS-SSMA	Direct Sequence-Spread Spectrum Multiple Access Hits - 782
DS/CDMA	Direct Sequence CDMA Hits - 814
DS/PPM	Direct Sequence Pulse Position Modulation Hits - 767
DS0	Digital Service level 0 Hits - 788
DSB	Double Sideband Modulation Hits - 764
DSBSC	Double Sideband Suppressed Carrier Hits - 755
DSD	Direct Stream Digital Hits - 745