GW Instek GDM-8261A - Select Voltage Range

GDM-8261A User Manual
28
Select Voltage Range
Auto range
To turn the automatic range selection
On/Off, press the AUTO key.
AUTO
Manual range
Press the Up or the Down key to select
the range. The AUTO indicator turns
Off automatically. If the appropriate
range is unknown, select the highest
range.
Selection list
Range
Resolution
Full scale @ slow rate
100mV
0.1µV
119.9999mV
1V
1µV
1.199999V
10V
10µV
11.99999V
100V
100µV
119.9999V
750V (AC)
1mV
750.000V
1000V (DC)
1mV
1000.000V
Note:
For more detailed parameters, see the specifications
on page 218.
DC Voltage
Range Note:
DC voltages with AC components cannot be accurately
measured if the DC+AC component exceed the ADC
dynamic range for the selected DC range. Any voltage
exceeding the ADC dynamic range will be clipped at the
upper/lower range limit. Under these conditions the range
that is chosen with the Auto range function may be too
small.
Example:
A
+2V
0V
-2V
C D
B
E
DC 1V Range
A,B: Input exceeds the ADC
dynamic range.
C,D: The DCV offset causes
the input to exceed the upper
ADC dynamic range.
E: The DCV offset causes the
input to exceed the lower
ADC dynamic range.
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