Key
Display
Enter
:TIMER STATE
Enter
Use arrow keys to set to
:ON
.
▽
:TIMER SET
Enter
TIMER=XXXXXS
Enter desired time interval. Valid values are
1 to 60000 seconds (1000 minutes).
Enter
:TIMER SET
Esc
Esc
Standard display
Now, when you turn a load on, it will stay on for the designated time, then turn off.
To turn off timed operation, enter the menu
:CONFIG:LOAD ON TIMER:TIMER STATE
and set it to
:OFF
.
Changing display resolution
The DC Load has two ranges of current and voltage (see the specifications). You can enable higher
resolution for voltages and currents on the lower range. Enter the menu with
Shift
+
Menu
and set
the menu element
:CONFIG:RANGE SELECT
to
ON
.
Increasing current resolution
To increase the current resolution (and change to the lower range), press Shift + . If the
▽
DC Load is
sinking a current higher than the top end of the lower range, it will be reset to the top end of the
lower range. To change back to the lower current resolution, press
Shift
+
▽
again.
Increasing voltage resolution
To increase the voltage resolution (and change to the lower range), press Shift + . You may see
△
OVERVOLTAGE
message on the display if the voltage is too high. To change back to the lower
voltage resolution, press
Shift
+
△
again.
Short
When a test mode is on, you may press
Shift
+
Short
to emulate a short. This will draw maximum
current from the DC supply in any of the four operation modes (CC, CV, CW, or CR). In CC, CV, or
CR mode, you may press
Shift
+
Short
to stop the short. The DC Load will return to its previous
operation. However, in CW mode, the short current will continue to be drawn; to stop the short, you
must press the
On/Off
key
Note: When emulating a Short while in CV mode, the current software limit may trigger the DC load
Input to turn Off, provided the current limit is reached. This does not affect the programmed settings
and the DC load will restore the previously programmed values once the Short condition is removed.
Battery test
The battery test feature measures the time it takes for a battery voltage to drop to a specified value
while drawing a constant current from the battery. When the voltage at the DC Load's terminals
reaches the specified voltage, the test is ended and the integrated current (i.e., charge supplied by
8500 DC Load Series
Version: February 4, 2009
Page 32 of 76
