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Command Descriptions
2–228
TDS Family Oscilloscope Programmer Manual
BURst is the time from the first MidRef crossing to the last MidRef crossing.
CARea (cycle area) is the area between the curve and ground over one cycle.
CMEan is the arithmetic mean over one cycle.
CRMs is the true Root Mean Square voltage over one cycle.
DELay is the time between the MidRef crossings of two different waveforms.
EXTINCTDB (TDS 500C and 700C) is 10.0 * log
10
(Extinction Ratio)
EXTINCTPCT (TDS 500C and 700C) is 100/Extinction Ratio
EXTINCTRATIO (TDS 500C and 700C) is High/Low
FALL is the time that it takes for the falling edge of a pulse to fall from a HighRef
value to a LowRef value of its final value.
FREQuency is the reciprocal of the period measured in hertz.
HIGH is the 100% reference level.
HITs (TDS 500C and 700C) displays the number of acquired point within or on
the histogram box.
LOW is the 0% reference level.
MAXimum is the highest amplitude (voltage).
MEAN for general purpose measurements, is the arithmetic mean over the entire
waveform. For histogram measurements, it is the average of all acquired points
within or on the histogram box.
MEANDBM (TDS 500C and 700C) is 10 * log
10
(MEAN/0.001) a value equal to
MEDian (TDS 500C and 700C) is the median of all acquired points within or on
the histogram box. Half of the acquired points are greater than and half less than
this value.
MINImum is the lowest amplitude (voltage).
NDUty is the ratio of the negative pulse width to the signal period expressed as a
percentage.
NOVershoot is the negative overshoot, expressed as:
NOVershoot + 100
ǒ
(Low * Minimum)
Amplitude
Ǔ
NWIdth is the distance (time) between MidRef (usually 50%) amplitude points of
a negative pulse.