Fluke NetDAQ 2645A - Manual (Page 243)

True-RMS Measurements
Waveform Comparison (True RMS vs Average Responding)
C
C-3
DC AND AC
TOTAL RMS
TRUE RMS =
0.000
1.000
1.000
0.900
0.636
0.000
0.707
1.000
1.000
1.000
2D
0.000
1.000
AC-COUPLED
INPUT
WAVEFORM
PK-PK
PEAK VOLTAGES
0-PK
MEASURED VOLTAGES
AC COMPONENT ONLY
RMS CAL * HYDRA
DC
COMPONENT
ONLY
SINE
PK
0 PK-PK
2.828
1.414
1.000
1.000
0.436
0.421
1.414
2.000
0.779
0.771
1.414
2.000
2.000
1.414
2.000
1.000
1.414
1.111
0.785
1.000
0.707
3.464
2.000
1.732
4.442 K
0.962
2K
1.000
PK-PK
PK-PK
PK-PK
PK-PK
PK-PK
2
0
PK
RECTIFIED SINE
(FULL WAVE)
RECTIFIED SINE
(HALF WAVE)
0
PK
0
PK
SQUARE
PK-PK
0
PK
RECTIFIED
SQUARE
RECTANGULAR
PULSE
0
PK
X
Y
D = X/Y
K = D-D 2
TRIANGLE
SAWTOOTH
0
PK
ac + dc 2 2
* RMS CAL IS THE DISPLAYED VALUE FOR AVERAGE RESPONDING INSTRUMENTS THAT ARE CALIBRATED
TO DISPLAY RMS FOR SINE WAVES
2 D
Figure C-1. Comparison of Common Waveforms