Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
Section 2: General operation
077114601 / March 2019
2-23
Measure Rel/Filter menu for the power supply function
This menu contains settings that specify the way measurement information is returned.
Setting
Description
Function
Displays the presently selected function.
Rel State
Use the relative offset feature to subtract a set value or a baseline reading
from measurement readings. When you enable relative offset, all subsequent
measurements are displayed as the difference between the actual measured
value and the relative offset value.
Rel Acquire
Acquire the present reading as a relative value.
Reference
Configure the offset value. You can use Rel Acquire to set the present
reading as the relative offset value. You can also specify the relative offset
using the numerical keys, navigation control, and soft keys. The default value
is
0
.
Type
The 2281S only supports moving average filtering. This filter continuously
adds measurements to the stack on a first-in, first-out basis, replacing the
oldest measurement in the stack with a new measurement.
Filter State
Enable or disable filtering of measurements.
Count
Sets the number of measurements that are averaged when filtering is
enabled. The number of measurements can be
2
through
100
.
Window
Filtering uses a window to control filter threshold. When the input signal
remains within the selected window, measurements continue to be placed in
the stack. If the input signal changes to a value outside the window, the filter
resets and starts processing again, starting with new measurements.
Measure Math menu for the power supply function
This menu contains settings that configure the math function.
Setting
Description
Type
Shows the type of math function used (read only). When the Math State is set
to
On
, the mx+b math operation is performed on measurements.
mx+b:
Manipulate normal display readings by adjusting the m and b factors.
State
When the state is set to
On
, any math operations specified for the present
measurement function are performed before completing the measurement.
m(Gain)
Specify scale factor for mx+b math operation. The valid range is
–
1e6
to
+1e6
.
b(Gain)
Specify the offset for mx+b math operation. The valid range is
–1e6
to
+1e6
.
Function
Shows the presently active function (read only).
Units
Specify the units suffix name for mx+b operation. You can only select one
capital letter for the name from the front panel.
Buffer Data Type
Select
Reading
to store measurements to the buffer without performing math
operations on them.
Select
Calc
to store measurements to the buffer after performing specified
math operations.
