Tektronix Keithley 2281 Series Reference Manual page 39

Section 2: General operation
Home screen for the battery simulator function
The following default screen is displayed when you choose the battery simulation function.
Descriptions of the numbered screen areas are in the table following the figure.
For details about how to use the battery simulator function, see
# Screen element
System status and
1
event indicators
OUTPUT view area
2
Soft-key area
3
2-16
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
Figure 18: Battery simulation home screen 1
Description
These indicators provide information about the present state of the instrument. Some
of the indicators open a dialog box with more information or a settings menu when
selected.
When the Status icon is partially filled with red, it indicates that the battery is being
discharged.
When the Status icon is filled with a lightning bolt symbol, it indicates that the battery
is being charged.
This part of the screen displays the status of the battery simulation.
The battery symbol on the left represents the remaining battery capacity.

SOC means state of charge, the remaining battery capacity shown as a
percentage.

A-H indicates the battery capacity in ampere-hours.

ESR indicates the equivalent battery resistance.
The battery symbol in the right represents the output voltage.

Voc is the open-circuit voltage, represented in dark blue.

Vt is the battery voltage when it is connected to a load. It changes depending
on the load. It is represented in light blue.

I displays the charging/discharging current. When the value is in negative (–),
the battery is being charged.
Shows the present setting values. You can change these values by pressing the key
below the screen.
By pressing the Next button, you can access additional screens with more soft keys.
Battery simulation (on page 3-69).
077114601 / March 2019