GW Instek GDM-8245 - Page 51

Appendix
51
Frequency measurement at ACV range
RANGE FREQUENCY INPUT LEVEL
(SINE WAVE)
ACCURACY
500mV 10Hz ~ 50kHz
≥120mV
0.05%+1
50kHz ~ 150kHz
≥200mV
0.05%+1
5V 10Hz ~ 200kHz
≥1.2V
0.05%+1
50V 20Hz ~ 200kHz
≥1.2V
0.05%+1
500V 20Hz ~ 1kHz
≥12V
0.05%+1
AC+DC measurement does not support AC+Hz function.
Maximum Input 450V peak ac continuous on 500mV range.
500V peak ac continuous on the other ranges.
DC Current
RANGE RESOLUTION ACCURACY BURDEN
VOLTAGE
500uA 0.01uA 0.2% +2 0.7Vmax.
5mA 0.1uA 0.2% +2 0.7Vmax.
50mA 1uA 0.2% +2 0.7Vmax.
500mA 10uA 0.2% +2 0.8Vmax.
2A 100uA 0.3% +2 0.8Vmax.
20A 1mA 0.3% +2 0.9Vmax.
Protection Fuse protection for 500uA, 5mA, 50mA, 500mA and 2A
ranges. To obtain accurate measurement results, please
refrain from using the 20A terminal for more than 15
seconds when measuring high current.
When the input exceeds the full scale of the selected range, the display will
indicate over-range: “—OL—“.
TRUE RMS AC OR AC+DC CURRENT
Accuracy Between 2% of range and full range.
RANGE 20Hz-45Hz 45Hz-2kHz 2kHz-10kHz 10kHz-20kHz
500uA 1%+15 0.5%+15 1%+15 2%+15
5mA 1%+15 0.5%+15 1%+15 2%+15
50mA 1%+15 0.5%+15 1%+15 2%+15
500mA 1%+15 0.5%+15 —————————
2A 1%+15 0.5%+15 —————————
20A 1%+15 0.5%+15 —————————
Protection Fuse protection 500uA, 5mA, 50mA, 500mA, and 2A
ranges. To obtain accurate measurement results,
please refrain from using the 20A terminal for more
than 15 seconds when measuring high current.