ARMY TM 9-6115-464-34AIR FORCE TO 35C2-3-445-2NAVY NAVFAC P-8-624-34Trace and definitions apply to either voltage orfrequency.NOTEChart marked at start of test.A Actual instrument trace of function.B Observed steady–state band (two linesparallel to the axis of chart movementone each passing through the centerpoints of maximum and minimum traceexcursion respectively during the short-term stability sample period, TS).C Mean of observed band.CL Mean value at selected load.CN Mean value at no load.D Prescribed steady-state band.E Point at which trace initially leavesprescribed load band under conditionof decrease in load.F Point at which trace enters and remainswithin prescribed no load band.G Point at which trace initially leavesprescribed no load band.,H Point at which trace enters and remainswithin prescribed load band.R Regulation between any two loads.S Surge after a load charge.SO OvershootSU UndershootTFL Observed recovery time, no load to load.TFN Observed recovery time, load to no load.TG Maximum allowable recovery time.TGL Maximum allowable recovery time,no load to load.TGN Maximum allowable recovery time, loadto no loadTS Prescribed short-term sample time fordetermining stability.Figure 4-1. Overshoot and Undershoot Chart Recording4-14
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