C-1. Comparison Of Common Waveforms - Fluke NetDAQ 2640A User Manual

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