User Manual

True-rms Thermal Multimeter

Basic Measurements

Volts/Hertz Ratio

The Multimeter can show the ratio of volts to frequency of the

ac signal. See Figure 6.

When the Multimeter is set to the Volts/Hz function, the voltage

range is set to manual. If the voltage increases to a value

larger than the range, the Multimeter shows

OL in the display.

If the voltage drops to less than 5 % of the range, the value

shown in the display can be invalid.

Low-Pass Filter

AC measurements use an ac low-pass filter (). The filter

blocks unwanted voltages above 1 kHz. See Figure 5. The

lower frequency voltages pass with reduced accuracy to the

measurement below 1 kHz. The low-pass filter can improve

measurement performance on composite sine waves that are

typically generated by inverters and variable frequency motor

drives.

Figure 5. Low-Pass Filter

Figure 6. Volt/Hertz Ratio

1 kHz

100 Hz

iFlex

HzACx1

V/HzACx2