Fluke ScopeMeter 123B, Руководство пользователя

Страница: 182 / 192

123B/124B/125B
Users Manual
Phase
Modes ................................................................. A to B, B to A
Range ................................................................. 0 to 359 degrees
Accuracy
<1 MHz ........................................................... 2 degrees
1 MHz to 5 MHz .............................................. 5 degrees
Resolution ........................................................... 1 degree
Power (125B)
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
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
76