Appendix I-Glossary

APPENDIX I GLOSSARY This glossary defines abbreviations and acronyms as they are used in this training manual. ACDS— Advance combat direction system AFTS— Audio-frequency tone shift ASCII— American Standard Code for information interchange BER— Bit error rate BFSK— Binary frequency-shift keying CAINS— Carrier Aircraft Inertial Navigation System CCA— Circuit card assembly C²— Command and Control C²P— Command and Control Processor CDG— Control/display group CDS— Combat Direction System CRT— Cathode-ray tube CPS— Continuous phase shift CS— Carrier suppression CSMA— Carrier sense multiple access CU— Control unit dB— Decibel dBm— Milliwatt reference (600-ohm load) DDC— Digits!-to-digital converter DDPG— Digital data processor group DIV— Diversity DLRP— Data link reference unit DPG— Data processing group DTS— Data Terminal Set EDAC— Error detection and correction elf— Extremely low frequency ehf— Extremely high frequency EMMSD— Embedded mass memory storage device EMS— Embedded memory subsystem ETA— Estimated time of arrival ETD— Estimated time of departure FDM— Frequency-division multiplexing FFT— Fast Fourier transform FSK— Frequency-shift keying Ghz— Gigahertz GRU— Gridlock reference unit hf— High frequency HPAG— High power amplifier group HPIB— Hewlett Packard Interface Bus Hz— Hertz ID— Track identification AI-1