Dod Master Clock

In telecommunication, DOD master clock is the master clock to which time and frequency measurements for the United States Department of Defense are referenced, i.e., are traceable. Note 1: The U.S. Naval Observatory master clock is designated as the DOD Master Clock. Note 2: The U.S. Naval Observatory master clock is one of the two standard time and frequency references for the U.S. Government in accordance with Federal Standard 1002-A. The other standard time and frequency reference for the U.S. Government is the National Institute of Standards and Technology (NIST) master clock. Source: from Federal Standard 1037C and from MIL-STD-188

 

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diffraction grating
digital access and cross connect system
digital filter
digital milliwatt
digital multiplex hierarchy
digital signal 0
digital subscriber line
digital transmission group
digitizer
digroup
direct access
direct connect
direct distance dialing
directional coupler
directive gain
direct sequence spread spectrum
disengagement originator
dispersion limited operation
distortion
distortion limited operation
distributed database
distributed queue dual bus
distributed switching
disturbance voltage
diurnal phase shift
diversity reception
double ended synchronization
double sideband reduced carrier transmission
double sideband suppressed carrier transmission
doubly clad fiber
d region
drift
drop (liquid)
drop and insert
dropout
dual access
dual in line package
duct
duobinary signal
duplexer
duty cycle
dynamic range
earth terminal complex
echo (mythology)