GW Instek GDM-8245 User Manual
Page 6
DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
8
Protection
500μA,5mA,50mA,500mA,2A 5 ranges fuse protection.
20A range no fuse,15 seconds max.
When the input exceeds the full scale of the selected range, the display will appear
“—OL—“ of over-range indication.
5. TRUE RMS AC OR AC+DC CURRENT
Accuracy
Between 2% of range and full range.
RANGE
20Hz-45Hz
45Hz-2kHz
2kHz-10kHz
10kHz-20kHz
500μA
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
500μA,5mA,50mA,500mA,2A 5 ranges fuse protection.
20A range no fuse,15 seconds max.
Crest Factor Range 3.0 at full scale.
The burden voltage is the same as the DC current.
When the input exceeds the full scale of the selected range, the display will appear
“—OL—” of over-range indication.
6. FREQUENCY MEASUREMENT AT ACA RANGE
RANGE FREQUENCY INPUT LEVEL (SINE WAVE)
ACCURACY
500μA 10Hz ~ 20kHz
≧
90μA
0.05%+1
5mA
10Hz ~ 20kHz
≧
0.9mA
0.05%+1
50mA
10Hz ~ 20kHz
≧
9mA
0.05%+1
500mA
10Hz ~ 20kHz
≧
90mA
0.05%+1
2A
10Hz ~ 2kHz
≧
1A
0.05%+1
20A
10Hz ~ 2kHz
≧
9A
0.05%+1
AC+DC measurement does not support AC+Hz function.
DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
9
7.RESISTANCE
RANGE
RESOLUTION
ACCURACY
500Ω
0.01Ω
0.1%+4
5kΩ
0.1Ω
0.1%+2
50kΩ
1Ω
0.1%+2
500kΩ
10Ω
0.1%+2
5MΩ
100Ω
0.2%+2
20MΩ
1kΩ
0.3%+2
Open-circuit Voltage
3.2 volts maximum on 500Ω, 1.3 volts maximum on all other
ranges.
Protection
450V dc or peak ac continuous.
8. CAPACITANCE
RANGE:
RESOLUTION
ACCURACY
5n *
0.001n
≧1nF: 2%+10
<1nF & ≧0.5nF: 2%+20
50n
0.01n
≧10nF: 2%+10
<10nF & ≧5nF: 2%+30
500n
0.1n
2%+4
5μ
1n
2%+4
50μ
10n
2%+4
*5n range tends to be interfered by the test lead’s impedance and position. For the
accuracy, please measure the range on the input terminal directly.
Protection
450V dc or peak ac continuous.
9. DIODE CHECK
Description
Display read forward voltage of diode.
Open Voltage
3.1V approx.
Maximum Forward
Voltage
1.5V
Protection
450V dc or peak ac continuous.