Fluke 8060A - dBV

Operating Instructions
Operation
2
2-31
2000mA
2000nS
A
A
COMMON
V
Ω
S
V
Ω
S
200mA
200
200k
200
µ
A
DC
AC
Hz
200mV
200
Ω
20mA
20
20k
2mA
2
2k
1000 DC
750 AC
M
Ω
Hz
dB
REL
1000V DC
750V AC
MAX
2A MAX
500V MAX
!
!
Decibel (dB)
Decibel (dB)
Button
Low (-)
High (+)
1. Select range.
2. Select AC or DC
voltage function.
3. Ensure all other
switches are out.
4. Press the decibel (dB)
button to enable the
decibel function:
5. Connect the test leads as shown above.
6. Heed the input overload limits (Table 2-2) and
connect the test leads to he circuit being measured.
7. Read the measured value on the display.
(Press again to disable):
dx20f.eps
Figure 2-19. Decibel (dB) Operation
2-25. dBV
dBV is defined as dB relative to 1 volt, independent of load impedance. This
measurement is commonly used in the audio industry as a convenient
reference for log weighted measurements such as noise, sensitivity, and
level. The 8060A uses the ratio self-test to “fool” the microcomputer into
thinking it has 1V present at the meter input, and then uses the pseudo 1V as
the 0 dB relative reference. Use the following procedure to make dBV
measurements: