User guide

GDM-360/397/398/461 User Manual

GDM-360/461: Displays the true rms value.

5. Press Hz% (GDM-360/397/398) or the yellow button (GDM-461) to obtain the

frequency and duty cycle value.

 Input Amplitude: (DC offset is zero)

 Input Amplitude:≥range×30%

 Frequency response:GDM-397/398: ≤400Hz, GDM-360/461: ≤

1kHz

Note

 If the value of the current to be measured is unknown, set to the highest range

and reduce the range step by step until a satisfactory reading is obtained.

 For safety, the measurement time for currents greater than 5A (>5A) should be

less than 10 seconds and the interval time between 2 measurements should be

greater than 15 minutes.

 When current measurement has been completed, disconnect the connection

between the testing leads and the circuit under test, and remove the testing leads

from the input terminals of the Meter.