RIGOL  Chapter 2 Command System 
2-6  DP800 Programming Guide 
:APPLy Command 
 
The :APPLy command provides the most straightforward method to program the power supply over the 
remote interface.  
 
Syntax  :APPLy {CH1|CH2|CH3} 
[,<volt>|MINimum|MAXimum][,<curr>|MINimum|MAXimum] 
:APPLy? {CH1|CH2|CH3}[,CURRent|VOLTage] 
Description  Set the voltage/current of the specified channel.   
Query the voltage/current of the specified channel.   
Parameter 
Name  Type  Range  Default 
{CH1|CH2|CH3}  Discrete  CH1|CH2|CH3  None 
<volt>  Real  Refer to the “Explanation” 
<curr>  Real  Refer to the “Explanation” 
 
Explanation    <volt> and <curr> can be omitted. If both of them are omitted, the command 
will select the desired channel; if only one of them is omitted, the command 
will set the voltage of the specified channel.   
  The parameter ranges and defaults of each channel for different models are as 
listed in the table below.  
Channel  <volt> Range  <volt> Default  <curr> Range  <curr> Default 
CH1  0V to 8.4V  0V  0A to 5.3A  5A 
CH2  0V to 32V  0V  0A to 2.1A  2A 
CH3  -32V to 0V  0V  0A to 2.1A  2A 
Channel  <volt> Range  <volt> Default  <curr> Range  <curr> Default 
CH1  0V to 32V  0V  0A to 3.2A  3A 
CH2  0V to 32V  0V  0A to 3.2A  3A 
CH3  0V to 5.3V  0V  0A to 3.2A  3A 
  If [,CURRent|VOLTage] is omitted in the query command, the command 
queries the voltage and current of the specified channel.  
Return Format  If [,CURRent|VOLTage] is not omitted, the query returns the voltage or current, for 
example, 5.000; if the parameter is omitted, the query returns the label, voltage 
and current of the specified channel (separated by commas), for example, 
CH1,5.000,1.0000. 
Example  :APPL CH1,5,1   /*Set the voltage and current of CH1*/ 
:APPL? CH1 /*Query the voltage and current of CH1 and the query returns 
CH1,5.000,1.0000*/