Section 4: Measurement optimization
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
4-2
077114601 / March 2019
Resolution
When using the power supply function, you can specify a resolution to adjust the measurement
accuracy and speed.
In the battery test and battery simulation function, the highest resolution is applied automatically.
Changing resolution affects NPLC, autozero, display digits, and average filter settings. For details,
see the following table.
Resolution
NPLC
Autozero state and
source delay
Display
digits
Average filter Benefit
Limitation
6.5
1.0
Autozero state: On
Source delay:
0.001 s
Source delay state:
On
6.5
Filter count: 10
Filter window:
0.01%
State: On
Low noise
readings
Compensate for
temperature
gain and offset
changes
Maximum
display
resolution
Low reading
speeds
5.5
0.1
Autozero state: Off
Source delay:
0.001 s
Source delay state:
On
5.5
Filter count: 10
Filter window:
0.01%
State: Off
Moderate
reading rates
Environmental
50 Hz/60 Hz
ambient noise
can impact
readings
Reduced
display
resolution
4.5
0.002
Autozero state: Off
Source delay: 0 s
Source delay state:
Off
4.5
Filter count: 10
Filter window:
0.01%
State: Off
Best reading
rate speeds.
Capture 50 µs
pulsed current
measurements
Environmental
50 Hz/60 Hz
ambient noise
can impact
readings
Lowest display
resolution
