Series 2280 Precision DC Power Supply Reference Manual  Section 3: Functions and features 
077085503 / March 2019  3-19 
 
Automatically clearing a buffer 
When using the power supply function, you can enable the autoclear function for the buffer. With 
autoclear enabled, the buffer is automatically cleared when the storage process starts. 
Using the front panel: 
1.  Press the MENU key. 
2.  Under Measure, select Data Buffers. 
3.  Select the button next to Auto Clear. The selection window is displayed. 
4.  Select On to enable the autoclear function. 
Using the SCPI commands: 
:TRACe:CLEar:AUTO ON 
:TRACe:CLEar:AUTO OFF 
Digital I/O 
You can use the Series 2280 digital input/output with the trigger model to control an external digital 
circuit, such as a device handler that is used to perform binning operations.   
To control or configure any of the six digital input/output lines, send commands to the Series 2280 
over a remote interface. 
The following topics contain more information about the digital input/output port. For more information 
the trigger model, see Trigger model (on page 3-25). 
Digital I/O port 
The digital I/O port uses a standard female DB-9 connector, which is located on the rear panel of the 
Series 2280. You can connect to the Series 2280 digital I/O using a standard male DB-9 connector. 
The port provides a connection point to each of the six digital I/O lines and other connections as 
shown in the following table.