User guide

GDM-360/397/398/461 User Manual
65
Frequency
Model
Range
Accuracy
Maximum Resolution
GDM-397/398/360
10Hz~10MHz
±(0.1%+4)
0.01Hz
GDM-461
10Hz~220MHz
±(0.01%+5)
0.001Hz
 Overload Protection: 1000Vdc/ ac (Vpp)
 Input Amplitude: (DC offset is zero)
 GDM-360/397/398:
When 10Hz ~ 10MHz: 200mV ≤a ≤ 30Vrms
 GDM-461:
When 10Hz ~ 10MHz: 300mV ≤a ≤ 30Vrms
When > 10MHz ~ 40MHz: 400mV ≤ a ≤ 30Vrms
When > 40MHz: unspecified
 When measuring on line frequency or duty cycle under AC Voltage
and Current measurement mode, the input amplitude and
frequency response must satisfy the following requirement:
Input amplitude ≥range x 30%
Frequency response: GDM-397/398: ≤ 400Hz
GDM-360/461: ≤ 1kHz