GW Instek GDM-8246 User Manual User Manual
Page 6
DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
7
2. TRUE RMS AC, AC+DC VOLTAGE
Accuracy
between 2% of range and full range.
RANGE
20Hz-
50Hz
50Hz-
2kHz
2kHz-
10kHz
10kHz-
20kHz
20kHz-
50kHz
50kHz-
100kHz
500mV
5V
50V
2%+20
5%+50
500V
0.5%+50
--------
--------
1000V
1%+10
0.3%+30 0.4%+50
--------
--------
--------
RANGE RESOLUTION
INPUT IMPEDANCE
500mV
10μV 10MΩ
5V
100μV 11.1
MΩ
50V 1mV
10.1MΩ
500V 10mV 10MΩ
1000V
100mV
10MΩ
Input Impedance
Approx. 10MΩ in parallel with < 100pF,all ranges.
Maximum Input
450V dc or peak ac continuous on 500mV range.
1000Vrms on other range.
Crest Factor Range
3.0 at full scale.
AC+DC all ranges
±(percentage of reading + 50 counts).
When the input exceeds the full scale of the selected range, the display will appear
“—OL—“ of over-range indication.
3. ACV OF RIPPLE FUNCTION
RANGE
20Hz-
50Hz
50Hz-
2kHz
2kHz-
10kHz
10kHz-
20kHz
20kHz-
50kHz
50kHz-
100kHz
500mV 1%+10
0.3%+30
0.4%+50
0.5%+50
2%+20
5%+50
Input Impedance
10MΩ∕
∕ 10MΩ in parallel with < 100pF.
Maximum Input
450V dc or peak ac continuous.
Crest Factor Range
3.0 at full scale.
DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
8
When the input exceeds the full scale of the selected range, the display will appear
“—OL—“ of over-range indication.
4. FREQUENCY MEASUREMENT AT ACV RANGE
RANGE
FREQUENCY
INPUT LEVEL (SINE WAVE)
ACCURACY
10Hz ~ 50kHz
≧1
20mV
500mV
50kHz ~ 150kHz
≧200mV
5V 10Hz
~
200kHz
Auto range≧
0.4V
Manaul range
≧
1.2V
50V 20Hz
~
200kHz
≧
1.2V
500V 20Hz
~
20kHz
≧
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 range.
5. DC Current
RANGE
RESOLUTION
ACCURACY BURDEN
VOLTAGE
500μA
0.01μA
5mA 0.1μA
50mA
1μA
0.7Vmax.
500mA
10μA
0.05% +3
2A 100μA
0.8Vmax.
20A 1mA
0.2% +5
0.9Vmax.
Protection
Fuse protection for 500μA,5mA,50mA,500mA,2A and 20A
ranges, 20A range input for 15 seconds max.
When the input exceeds the full scale of the selected range, the display will appear
“—OL—“ of over-range indication.