13
14
3. dB and dBm (ACV / ACmV only)
4. Relative mode
In the relative mode, the meter records the current input value as
reference and appears on the upper display. The after input values
will calculate the difference ( ) of the reference value and the input
value or the difference percent (%) of the reference value and the
input value.
The decibel (dB) is a logarithmic unit of measurement that expresses
the magnitude of a physical quantity relative to a specified or implied
reference level. The dB and dBm are defined below.
dB = 20 log
dBm = 20 log
V
AC
1
V
AC
0.7746
AC
AUTO
kHz
V
ENTER
CANCEL
PRESS
PRESS
PRESS
dB
dBm
AC
AUTO
dB
V
dB
dB
AC
AUTO
dB
V
dBm
dBm
dB
dBm
AC
AUTO
V
ENTER
PRESS
CANCEL
PRESS
AC 2V
PRESS
AC
V
V
AC
V
V
OFF
MAX
10A
FUSED
MAX
mA
FUSED
600V
CAT IV
1000V
CAT III
A
mA COM V
Hz °C
°C°F
V
Hz%
mV
A
AC 3V
OFF
MAX
10A
FUSED
MAX
mA
FUSED
600V
CAT IV
1000V
CAT III
A
mA COM V
Hz °C
°C°F
V
Hz%
mV
A
AC 3V
OFF
MAX
10A
FUSED
MAX
mA
FUSED
600V
CAT IV
1000V
CAT III
A
mA COM V
Hz °C
°C°F
V
Hz%
mV
A
