High Impedance Dc Voltage; Multiplication Factors For Converting Waveforms - Fluke 8060A Instruction Manual

8060A
Instruction Manual
AC Coupled
Input
Waveform PK - PK
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 meters that are calibrated to display rms for sine waves.
Figure 2-8. Multiplication Factors for Converting Waveforms
Since average-responding meters have been in use for so long, you may have
accumulated test or reference data based on them. The conversion factors in
Figure 2-8 should help you convert between the two measurement methods.

2-15. High Impedance DC Voltage

Occasionally you may want to make dc voltage measurements in high
impedance circuitry where even the 10 M input impedance for the normal
dc voltage function could load the circuit and cause significant errors. For
example, a 10 M input impedance causes a 0.1% error when measuring the
voltage across the 10 k leg of a 90 k over 10 k voltage divider. The
8060A offers a >1,000 M (typically >10,000 M ) input impedance dc
voltage function which greatly reduces this error.
2-14
Peak Voltages
0 - PK
1.414
1.414
2.000
1.000
1.414
2.000
1.732
Display Readings
AC Component Only
rms CAL* 8062A
1.000 1.000
0.421 0.435
0.764 0.771
1.110 1.000
0.785 0.707
2.22K 2K
0.960 1.000
DC and AC
DC Total rms
TRUE RMS =
Component
2
ac + dc
only
0.000 1.000
0.900 1.000
0.636 1.000
0.000 1.000
0.707 1.000
2D 2
D
0.000 1.000
2