OPERATION
63
Measure dB
dB is defined as [dBm−dBmref]. When the dB measurement is
activated, the DMM calculates the dBm using the reading at the
first moment and stores it as dBmref.
Procedure
1.
Select ACV or DCV measurement. See page 32.
2.
Press the SHIFT
→
Hz/P(dB) keys to activate
the dB measurement mode.
The 1st display shows the dB reading, the
second display shows the voltage reading.
Display
REAR
GPIB
CV
CC
SWEEP
FILT
RCL
STO
COMP
2ND
dBm
EXT
SHIFT
ERR
LIMIT
AUTO
MATH
4W
2W
DC
AC
A
V
m
m
Hz
W
k
M
W
S
F
C
m
dB
%
A
V
m
m
Hz
W
k
M
W
S
F
C
RMT
MAX
MIN
REL
HOLD
S
M
F
AUTO
4W
2W
DC
AC
n
μF
dB
measurement
Voltage
reading
View the dBm
Reference Value
To view the dBm reference value, press the
2ND key.
The Up and Down arrow keys can also be used
to change the voltage range or the reading.
Exit dB
Measurement
Press the
SHIFT →
Hz/P(dB) keys again to exit
the dB measurement, or simply activate another
measurement function.
