1-17
IM 253710-01E
Functions
1
Zero Level Compensation «For procedures, see section 4.4.»
Zero level compensation refers to the operation of adjusting the level to zero using an
internal circuit of the instrument. Zero level compensation must be performed in order to
meet the specifications of the instrument (see chapter 17). When the measurement
mode, measurement range, and input filter are changed, zero level compensation is
performed automatically. However, if these parameters are not changed over a long
period of time, the zero level may change due to changes in the environment
surrounding the instrument. In such cases, the zero level can be forcibly compensated.
NULL Function «For procedures, see section 4.5.»
The Udc and Idc (numerical data of the simple average of the voltage and current in the
normal measurement mode) as well as Speed and Torque (when using the motor
module and the input signal from the sensor is a DC voltage) that have been measured
when the NULL function is turned ON are set as NULL values. The null values are
subtracted from the voltage and current data. Therefore, all measurement functions are
influenced by the NULL value. When setting the NULL value, we recommend that the
voltage and current measurement ranges be set as small as possible. The
measurement resolution is higher when the measurement range is small which results in
a more accurate measurement of the NULL value.
1.3 Acquiring Data (Voltage and Current Signals)