Hioki RM3545, Instruction Manual, Page: 90 / 364

4.8 Compensating for Thermal EMF Offset (Offset Voltage Compensation - OVC)
82
This function automatically compensates for offset voltage resulting from thermal emf or
internal instrument bias. (OVC: Offset Voltage Compensation)
See: "Appendix 9 Effect of Thermal EMF" (p. A23)
"3.1 Checking the Measurement Target" (p.48)
The following value is known to be a true resistance value from R
P
, the value measured
with current flowing in the positive direction, and R
N
, the value measured with current flow-
ing in the negative direction.
•
When low-power resistance measurement is disabled.
From the 10 m
Ω
range to the 1,000
Ω
range, the offset voltage correction function can be
turned on. From the 10 k
Ω
range to the 1,000 m
Ω
range, the OVC function cannot be
used.
•
When low-power resistance measurement is enabled.
The offset voltage correction function will be automatically turned on for all ranges. This
function cannot be disabled.
4.8 Compensating for Thermal EMF Offset
(Offset Voltage Compensation - OVC)
1
Open the Settings Screen.
2
Open the Measurement Setting Screen.
R
P
−
R
N
2
The Settings screen
appears.
Switch the function menu
to P.2/3.
1
2
Move the cursor to the
[MEAS] tab with the left and
right cursor keys.