Fluke 123 - TrendPlotting a Waveform

Fluke 123/124/125
Service Manual
2-8
Crest Factor (CREST)
Range 1 to 10
Accuracy ±(5% +1 count)
Full Scale Reading 100 counts
Phase
Modes A to B, B to A
Range 0 to 359 degrees
Accuracy ±(1 degree +1 count)
Resolution 1 degree
Power (Fluke 125)
Configurations 1 phase
3 phase 3 conductor balanced loads
(3 phase: fundamental component only
AUTOSET mode only)
Power Factor (PF) ratio between Watts and VA
Range 0.00 to 1.00
Watt RMS reading of multiplying
corresponding samples of input A (volts)
and input B (amperes)
Full Scale reading 999 counts
VA Vrms x Arms
Full Scale Reading 999 counts
VA Reactive (VAR) √((VA)
2
-W
2
)
Full Scale Reading 999 counts
VPWM (Fluke 125)
Purpose to measure on pulse width modulated
signals, like motor drive inverter outputs
Principle readings show the effective voltage based
on the average value of samples over a
whole number of periods of the
fundamental frequency
Accuracy as Vrms for sinewave signals
2.3.2 Input A
Ohm (Ω)
Ranges 50Ω (Fluke 125), 500Ω, 5 kΩ, 50 kΩ, 500
kΩ, 5 MΩ, 30 MΩ
Accuracy ±(0.6% +5 counts)
Full Scale Reading
500Ω to 5 MΩ 5000 counts
30 MΩ 3000 counts
Measurement Current 0.5 mA to 50 nA
decreases with increasing ranges