Definitions for "Retrace"
Keywords:  ocxo, ppb, previous, equilibrium, oven
To go back, in or over (a previous course); to go over again in a reverse direction; as, to retrace one's steps; to retrace one's proceedings.
is the frequency error after power is applied, relative to the previous value and aging rate before power was removed. The normal period that the OCXO is powered off is 24 hours. The normal period powered up is to sufficient time to allow complete thermal equilibrium. Good retrace is obtained by proper design of the oscillator, oven mechanics and resonator. All of these require careful processing and assembly to achieve consistent results. This is of the order of ±20 to ±50 ppb. In addition to the crystal related effects described above, thermal stresses from heating and cooling the oven structure can contribute to the retrace, and changes in aging rate.
Keywords:  beam, scan, crt, sync, horizontal
During the scanning of a picture onto a screen, scan lines are produced from left to right. Before scanning the next line, the electron beam must get back to the left side of the screen. This is called "retrace". The beam must be turned off (blanked) during retrace time. A retrace problem could appear as missing video information on the left side of the screen. Also see Horizontal blanking and Vertical blanking
The return of the electron beam in a CRT to the starting point after scanning. During retrace, the beam is typically turned off. All of the sync information is placed in this invisible portion of the video signal. May refer to retrace after each horizontal line or after each vertical scan (field).
A total screen update, usually happening at the rate of about 60 frames per second.
Keywords:  trace, took, summer, outline, renew
To trace back, as a line.
To trace over again, or renew the outline of, as a drawing; to draw again.
to go back over again; "we retraced the route we took last summer"; "trace your path"
Lightweight requirements management tool, with export, search and traceability functions. Uses plain text files as backend.
reassemble mentally; "reconstruct the events of 20 years ago"