GW Instek GDM-8245 - Specifications; DC Voltage

GDM-8245 Service Manual
12
Specifications
The following specifications apply when the instrument is powered on for at
least 30 minutes within +18°C to +28°C (64.4 to 82.4°F). Accuracy is expressed as
±(percentage of reading + digits), the AC specification is based on a 50% duty
cycle, the power cord protective grounding conductor must be connected to
ground, relative humidity not exceeding 75% and a 1-year calibration cycle.
DC Voltage
RANGE
RRSOLUTION
ACCURACY
INPUT IMPEDANCE
500mV
10uV
0.03%+4
10MΩ
5V
100uV
0.03%+4
11.1 MΩ
50V
1mV
0.03%+4
10.1MΩ
500V
10mV
0.03%+4
10MΩ
1000V
100mV
0.03%+9
10MΩ
Input Impedance
Approx. 10MΩ in parallel with < 100pF, all
ranges.
Normal Mode Rejection Ratio
>60dB at 60Hz or 50Hz
Common Mode Rejection Ratio
>90dB at 60Hz or 50Hz
Common Mode Voltage (Max.)
500V DC or peak AC.
Maximum Input
450V DC or peak AC continuous on 500mV
range.
1000V DC or peak AC continuous on other
ranges.
dBM (ref 600Ω)
63.8dBm ~ -97.7dBm.
When the input exceeds the full scale of the selected range, the display will
indicate over-range: ―—OL—―.