Series 2268 850 Watt DC Power Supplies Reference Manual
Local Operation
2268S-901-01 Rev. A / January 2015
33
To access the tracking mode for entering voltage and current:
1.
Select the VOLTS or AMPS position on the 9-position mode control. If the set
point is blinking, the unit is in coarse tracking mode.
•
When the VOLTS mode is selected, the voltage set point will blink in the output
voltage display.
•
When the AMPS mode is selected, the current set point will blink in the output
current display.
2.
Use the rotary Adjust/Enter control to adjust the set point. Note that there is an
activity time out (see “Normal Display Mode and Inactivity Timeout” on page 33).
The adjustments you make to the set point affect the opposing output value (voltage
when in AMPS mode or current when in VOLTS mode), which will update in the
non-blinking display.
3.
Press the rotary Adjust/Enter control to enter fine adjust tracking mode.
The set point blinks faster when the unit is in fine adjust tracking mode.
4.
Use the rotary Adjust/Enter control to fine tune the set point.
5.
Once the set point has been selected, press the rotary Adjust/Enter control to exit
tracking mode and return to normal display mode.
To access the select and set entry mode for the voltage and current set points:
1.
Select VOLTS or AMPS position on the 9-position mode control.
2.
Press the rotary Adjust/Enter control three times in succession to enter coarse
Pre-Set Adjustment.
3.
Press the rotary Adjust/Enter control one more time to enter fine Pre-Set
Adjustment.
4.
Press the rotary Adjust/Enter control once again to set the value.
The units can also timeout (adjustable) to exit the menu. Once Pre-Set Mode is entered,
CrPU or FnPU will appear in the voltage display.
Normal Display Mode and Inactivity Timeout
Normal display mode appears on the output voltage and current displays when the
configuration changes from the front panel have been completed or when the inactivity
timeout occurs (default is 3 seconds). Normal display mode shows the output voltage and
current values.
If a timeout occurs before the changes made to the value have been set, the changes will not
be saved and you will have to re-enter the changes. The inactivity timeout is variable from 1
to 20 seconds and can only be changed using the SCPI command.
The SCPI command (s) for these instructions are:
[:]SYSTem[<channel>]:FPANel[:TIMeout]
Important:
Each user memory setting location stores the timeout so that
beginning users and expert users are not required to use the same timeout
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