Larson Davis System 824, Reference Manual

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9/12/00 B -49
Interval History Variables (“I” Commands)
The Interval History is a long-duration time history of statis-
tical data. It is enabled by Setting 83, Interval Enable
[No|Yes] (see Settings 83 through 90). The period of the
interval is selectable from one second up to 99 hours, 59
minutes, and 59 seconds (99:59:59).
E14,n RTA By Time Sample Duration
E15,n RTA By Time Overload
E16 RTA RT60 calculation at current filter.
Filter set by E 3, E 4, E 5, or E 12.
E17 LOG Excd Time-Hist Samples nnn
E17,n RTA Extracts ByTime History and
returns nothing
E18[n] LOG Excd Time-History nnn.n dB
E18 RTA RT60 delta time.
NOTE: Value is determined by prior E 16, or E
17.
E19<,n> LOG Excd T.H. Time -sss.ss
E20<,n> LOG Excd T.H. Number -nnn
E21<,n> LOG Excd T.H. Bargraph *********************
*
E101 LOG Excd Macro Variables 1-10, 25 Macro
E102 LOG Excd Macro Time-Hist 17, 18... Macro
Commands Instrument
Type
Description Commnet