SA5052 Digital Multimeter User ‟s Guide
Shijiazhuang Suin Instruments Co., Ltd. 31
Front panel operation
：
Press
【
Shift
】
+
【
dB
】
key to excute dB operation.Then press
【
Config
】
+
【
Shift
】
+
【
dB
】
key and get down to parameter level to select suitable parameter
by
【
<
】
,
【
>
】
,
【∧】
or
【∨】
keys if you want to change voltage.
● Press
【
dB
】
key again to disable the function.
● dB function is only available for dc and ac voltage measurement. The reference volage is
stored in volatile memory; default setting is 1.0V when power-on after remote interface
reset.
3.3.4 dB
m
The dBm operation calculates the power delivered to a resistance referenced to 1 milliwatt.
dBm=10×log(V
in
2
/ Z)/1mW
V
in
is input signal,
Z
is reference resistance
Front panel operation
：
Press
【
Shift
】
+
【
dBm
】
key to excute dBm operation.Then press
【
Config
】
+
【
Shift
】
+
【
dBm
】
key to select suitable parameter by
【
<
】
,
【
>
】
,
【∧】
or
【∨】
keys if you want to change Z value.
● Press
【
dBm
】
key again to disable the function.
● dBm function is only available for dc and ac voltage measurement. The reference
resistance Z ranges from 50Ω to 8000Ω, default setting is 600Ω when power-on or after
remote interface reset.
3.3.5 MX+B
MX+B operation calculates measurements value X and two constants (M and B) linearly.
Y=MX+B
Constant M is gain, contant B is deviation value.
Front panel operation
：
Press
【
MX+B
】
key to excute MX+B operation. If you want to
change M and B, please press
【
Config
】
+
【
MX+B
】
key, first to set M value by
【
<
】
,
【
>
】
,
【∧】
or
【∨】
keys and press
【
Enter
】
key to confirm it. Then set B value with same
operation.
