TM 1-1520-238T-10 GLOSSARY (cont) GLOSSARY (cont) ARBR DEFINITION LDG landing LDNS lightweight doppler navigation system LED light emitter diode LEU laser electronics unit LH left hand LMC linear motion compensation LO low LOC location LONG longitudinal LOP low oil pressure LOS line of sight LRF laser fired LRF/D laser finder/designation LRFD laser range finder/designation LRS laser LRU line replaceable unit LSR laser LSRD laser detent LST laser spot tracker LT laser tracker LT light LTG lighting LTRU laser transceiver unit LTU laser transceiver unit LVDT linear variable differential transducer LVL level LVR louver M meter M mode M motor ARBR DEFINITION M1 MOTOR 1 M2 MOTOR 2 MA missile abort MAG magazine MAG magnetic MAINT maintenance MAN manual MAX maximum MC mode code MCM motor command MEM memory MF micro farad MFOV medium field of view MHZ mega hertz (million cycles per second) MIC microphone MOM momentary MON monitor MONT monitor MONO monitor MOT motor MP micro processor MRTU multiplex remote terminal unit MS master switch MSL missile MT transducer MTR motor MUX multiplex NAV navigation NC normally closed NEG negative NEUT neutral Glossary 6 Change 5