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ADRV9029 Recommended for New Designs
The ADRV9029 is a highly integrated, radio frequency (RF) agile transceiver offering four independently controlled transmitters, dedicated observation...
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ADRV9029 on Analog.com

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ADRV9010 Recommended for New Designs
The ADRV9010 is a highly integrated, radio frequency (RF) agile transceiver that offers four independently controlled transmitters, dedicated observation...
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DPD fail



		

			

									
					    ecochip
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 6, 2023 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Software
    
    		        		            		    
    Product Number:  ADRV9029 
    
    		        		        		        
    Software Version: 6.0.0.41
    
    		    		    	
			
    Hello:
    

        What can we do when DPD failed,sometimes the dpdErrorCode was 0x341D or 0x340C or 0x340A,  then the ACLR performance was very bad. 
    

        I see the DPD robustness chapter in user guide, can it  recover the dpd error?
    

        How can I use the function when dpd mode is ADI_ADRV9025_DPD_MODE2
    

     
    

    

    Best regards!
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 ADRV9010
                
                                                    
                 software
                
                                                    
                 ADRV9029
                
                                                    
                 Wideband Transceiver IC
                
                                                    
                 rf and microwave
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Nov 6, 2023 9:47 AM
            
            
					
      
	
      

		
		
      
					
      Please follow the below link on troubleshooting the DPD errors.
      

      https://wiki.analog.com/resources/eval/user-guides/adrv9029/dpd_error_troubleshooting
      

      Below are the DPD errors that are shown as part of API Source package as well.
      

       
      

      ecochip said:
      What can we do when DPD failed,sometimes the dpdErrorCode was 0x341D or 0x340C or 0x340A,  then the ACLR performance was very bad. 
      

      We need to find out the reason why these errors are being triggered before relying on relaxing the Default condition threshold settings.
      

      Please share the DPD statistics for better understanding of the issue.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
        
            
						
                            
            
            				
            
                on Nov 17, 2023 2:28 AM
            
            
												
						in reply to Ramarao
					
									
        
	
        

		
		
        
					
        Hi Ramarao:
        

        The DPD status read back as follow screen when the system run one night. The dpdIterCount was 17356, the dpdupdateCount was 2648,  and the dpdupdateCount was stopped now, 
        

        another  why the recovery action which reset DPD adaptation and hardware reset was not done when the dpdErrorStatus0_dpdMetricsMask was 0x380,  the dpdPersistentErrorStatus0_dpdMetricsMask was 0x300?
        

         
        

        The Fault Conditions were:
        

         
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        
            
						
                            
            
            				
            
                on Nov 17, 2023 6:18 AM
            
            
												
						in reply to ecochip
					
									
        
	
        

		
		
        
					
        ecochip said:
        The DPD status read back as follow screen when the system run one night. The dpdIterCount was 17356, the dpdupdateCount was 2648,  and the dpdupdateCount was stopped now, 
        

        We need to find out why the update count is so less when compared with the Iteration count. Which DPD Update mode are you using?
        

        Also, from the DPD statistics, there is stability error which means the DPD update will not happen. 
        

        For recovery action we typically recommend to OR the different recovery actions. Please see the attached reference python script.
        

        



        
    
        
        Fullscreen
        8475.DpdRobustness_Madura.txt
        Download
    
        
    
        #################################################################################
#GUI Version: 0.0.0.939
#DLL Version: 0.0.0.857
#Cmd Server Version: 0.0.0.857
#FPGA Version: 0xD9000007
#ARM Version: 0.0.0.503
#StreamVersion: 0.0.0.73
#Author: Anand Kumar
#Precondition: Ensure that the DPD tracking cal is disabled before running this script
#Description: This script sets up the DPD robustness framework, and reads back the metrics and action mask after setting up the DPD 
# Specifically, the DPD LUT updates are skipped if indirect error is greater than 5%
# If the direct EVM is persistently greater than 5% for at least 10 update periods, the DPD is reset.
#################################################################################

#Import Reference to the DLL
import System
import clr
import time
from System import Array
clr.AddReferenceToFileAndPath("C:\\Program Files\\Analog Devices\\ADRV9025 Transceiver Evaluation Software_x64_FULL\\adrvtrx_dll.dll")
from adrv9010_dll import AdiEvaluationSystem
from adrv9010_dll import Types
from adrv9010_dll import Ad9528Types

def spiRead(address):
    data = adrv9010.Hal.SpiByteRead(address, 0)
    print "SPI Read Address " + hex(address) + ": " + hex(data[1])

def spiWrite(address, data):
    adrv9010.Hal.SpiByteWrite(address, data)
    print "SPI Write Address " + hex(address) + ": " + hex(data)

def dpdStabilityCondnSetup(txChannelMask = 0xF):
    DEFAULT_WARNING_PERCENTAGE = 10
    DEFAULT_ERROR_PERCENTAGE = 15
    DEFAULT_WARNING_dBFS = -36
    DEFAULT_ERROR_dBFS = -40  
    ERROR_PERSISTENT_COUNT = 10
	
    dpdFaultConditionArr = Array.CreateInstance(Types.adi_adrv9010_DpdFaultCondition_t, 10)
    dpdFaultConditionArr[0] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[0].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_EVM
    dpdFaultConditionArr[0].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_GREATER_THAN
    dpdFaultConditionArr[0].threshold0 = (DEFAULT_WARNING_PERCENTAGE)
    dpdFaultConditionArr[0].threshold1 = (DEFAULT_ERROR_PERCENTAGE)
    dpdFaultConditionArr[0].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[1] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[1].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_DIRECT_EVM
    dpdFaultConditionArr[1].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_GREATER_THAN
    dpdFaultConditionArr[1].threshold0 = (DEFAULT_WARNING_PERCENTAGE)
    dpdFaultConditionArr[1].threshold1 = (DEFAULT_ERROR_PERCENTAGE)
    dpdFaultConditionArr[1].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[2] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[2].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_SELECT_ERROR
    dpdFaultConditionArr[2].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_GREATER_THAN
    dpdFaultConditionArr[2].threshold0 = (DEFAULT_WARNING_PERCENTAGE)
    dpdFaultConditionArr[2].threshold1 = (DEFAULT_ERROR_PERCENTAGE)
    dpdFaultConditionArr[2].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[3] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[3].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_ERROR
    dpdFaultConditionArr[3].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_GREATER_THAN
    dpdFaultConditionArr[3].threshold0 = (DEFAULT_WARNING_PERCENTAGE)
    dpdFaultConditionArr[3].threshold1 = (DEFAULT_ERROR_PERCENTAGE)
    dpdFaultConditionArr[3].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[4] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[4].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_MEAN_TU_POWER
    dpdFaultConditionArr[4].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[4].threshold0 = (-25 * 100)
    dpdFaultConditionArr[4].threshold1 = (-40 * 100)
    dpdFaultConditionArr[4].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[5] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[5].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_PEAK_TU_POWER
    dpdFaultConditionArr[5].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[5].threshold0 = (DEFAULT_WARNING_dBFS * 100)
    dpdFaultConditionArr[5].threshold1 = (DEFAULT_ERROR_dBFS * 100)
    dpdFaultConditionArr[5].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[6] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[6].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_PEAK_TX_POWER
    dpdFaultConditionArr[6].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[6].threshold0 = (DEFAULT_WARNING_dBFS * 100)
    dpdFaultConditionArr[6].threshold1 = (DEFAULT_ERROR_dBFS * 100)
    dpdFaultConditionArr[6].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[7] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[7].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_MEAN_TX_POWER
    dpdFaultConditionArr[7].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[7].threshold0 = (DEFAULT_WARNING_dBFS * 100)
    dpdFaultConditionArr[7].threshold1 = (DEFAULT_ERROR_dBFS * 100)
    dpdFaultConditionArr[7].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[8] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[8].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_PEAK_ORX_POWER
    dpdFaultConditionArr[8].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[8].threshold0 = (DEFAULT_WARNING_dBFS * 100)
    dpdFaultConditionArr[8].threshold1 = (DEFAULT_ERROR_dBFS * 100)
    dpdFaultConditionArr[8].persistentCount = ERROR_PERSISTENT_COUNT

    dpdFaultConditionArr[9] = Types.adi_adrv9010_DpdFaultCondition_t()
    dpdFaultConditionArr[9].dpdMetric = Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_MEAN_ORX_POWER
    dpdFaultConditionArr[9].comparator = Types.adi_adrv9010_DpdComparator_e.ADI_ADRV9010_DPD_COMPARATOR_LESS_THAN
    dpdFaultConditionArr[9].threshold0 = (DEFAULT_WARNING_dBFS * 100)
    dpdFaultConditionArr[9].threshold1 = (DEFAULT_ERROR_dBFS * 100)
    dpdFaultConditionArr[9].persistentCount = ERROR_PERSISTENT_COUNT

    link.platform.board.Adrv9010Device.Dfe.DpdFaultConditionSet(txChannelMask, dpdFaultConditionArr, 10)

def dpdRecoveryActionConfigSet(txChannelMask = 0x0F):
    print"***************************************"
    print"Setting up Recovery Actions for DPD Robustness"   
    
    #Setup Recovery Action
    dpdRecoveryActionArr = Array.CreateInstance(Types.adi_adrv9010_DpdRecoveryActionConfig_t, 4)   

    #Configure Recovery Action for violation of threshold0
    dpdRecoveryActionArr[0] = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    dpdRecoveryActionArr[0].dpdErrorState = Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_0
    dpdRecoveryActionArr[0].dpdRecoveryAction.dpdMetricsMask = int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_DIRECT_EVM)
    dpdRecoveryActionArr[0].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_ERROR)
    dpdRecoveryActionArr[0].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_SELECT_ERROR)
    dpdRecoveryActionArr[0].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_MEAN_TU_POWER)
    dpdRecoveryActionArr[0].dpdRecoveryAction.dpdActionMask = int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_SKIP_LUTS_UPDATE)

    #Configure Recovery Action for violation of threshold1
    dpdRecoveryActionArr[1] = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    dpdRecoveryActionArr[1].dpdErrorState = Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_1
    dpdRecoveryActionArr[1].dpdRecoveryAction.dpdMetricsMask = int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_DIRECT_EVM)
    dpdRecoveryActionArr[1].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_ERROR)
    dpdRecoveryActionArr[1].dpdRecoveryAction.dpdActionMask = 0#int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_SKIP_LUTS_UPDATE)

    #Configure Recovery Action for persistent violation of threshold0
    thresh0ActionMaskPersistent = 0
    thresh0ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_SKIP_LUTS_UPDATE)
    thresh0ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_RESET_FIRST_DPD_FLAG)
    thresh0ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_REVERT_LUTS_TO_UNITY)
    thresh0ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_RESET_ADAPTATION_STATE)
	
    dpdRecoveryActionArr[2] = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    dpdRecoveryActionArr[2].dpdErrorState = Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_PERSISTENT_0
    dpdRecoveryActionArr[2].dpdRecoveryAction.dpdMetricsMask = int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_DIRECT_EVM)
    dpdRecoveryActionArr[2].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_ERROR)
    dpdRecoveryActionArr[2].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_SELECT_ERROR)
    dpdRecoveryActionArr[2].dpdRecoveryAction.dpdActionMask = thresh0ActionMaskPersistent

    #Configure Recovery Action for persistent violation of threshold1
    thresh1ActionMaskPersistent = 0
    thresh1ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_SKIP_LUTS_UPDATE)
    thresh1ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_REVERT_LUTS_TO_UNITY)
    thresh1ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_RESET_ADAPTATION_STATE) 
    thresh1ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_RESET_FIRST_DPD_FLAG) 
    thresh1ActionMaskPersistent |= int(Types.adi_adrv9010_DpdRecoveryAction_e.ADI_ADRV9010_DPD_RECOVERY_ACTION_6DB_DIG_ATTEN)	

    dpdRecoveryActionArr[3] = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    dpdRecoveryActionArr[3].dpdErrorState = Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_PERSISTENT_1
    dpdRecoveryActionArr[3].dpdRecoveryAction.dpdMetricsMask = int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_DIRECT_EVM)
    dpdRecoveryActionArr[3].dpdRecoveryAction.dpdMetricsMask |= int(Types.adi_adrv9010_DpdMetric_e.ADI_ADRV9010_DPD_METRIC_INDIRECT_ERROR)
    dpdRecoveryActionArr[3].dpdRecoveryAction.dpdActionMask = 0#thresh1ActionMaskPersistent    

    #Program the recovery action in the device
    link.platform.board.Adrv9010Device.Dfe.DpdRecoveryActionSet(txChannelMask, dpdRecoveryActionArr, 4)
    print"***************************************"

def dpdRecoveryActionConfigGet():
    print"***************************************"
    print"Reading back Recovery Actions for DPD Robustness"  
    dpdRecoveryActionFromDevice = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    [recAction, dpdRecoveryActionFromDevice] = link.platform.board.Adrv9010Device.Dfe.DpdRecoveryActionGet(Types.adi_adrv9010_TxChannels_e.ADI_ADRV9010_TX1, Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_0, dpdRecoveryActionFromDevice)
    print "Recovery Action - Metrics Mask Error State 0 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdMetricsMask
    print "Recovery Action - Action Mask Error State 0 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdActionMask
    print " "

    dpdRecoveryActionFromDevice = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    [recAction, dpdRecoveryActionFromDevice] = link.platform.board.Adrv9010Device.Dfe.DpdRecoveryActionGet(Types.adi_adrv9010_TxChannels_e.ADI_ADRV9010_TX1, Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_1, dpdRecoveryActionFromDevice)
    print "Recovery Action - Metrics Mask Error State 1 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdMetricsMask
    print "Recovery Action - Action Mask Error State 1 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdActionMask
    print " "

    dpdRecoveryActionFromDevice = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    [recAction, dpdRecoveryActionFromDevice] = link.platform.board.Adrv9010Device.Dfe.DpdRecoveryActionGet(Types.adi_adrv9010_TxChannels_e.ADI_ADRV9010_TX1, Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_PERSISTENT_0, dpdRecoveryActionFromDevice)
    print "Recovery Action - Metrics Mask Persistent 0 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdMetricsMask
    print "Recovery Action - Action Mask Persistent 0 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdActionMask
    print " "

    dpdRecoveryActionFromDevice = Types.adi_adrv9010_DpdRecoveryActionConfig_t()
    [recAction, dpdRecoveryActionFromDevice] = link.platform.board.Adrv9010Device.Dfe.DpdRecoveryActionGet(Types.adi_adrv9010_TxChannels_e.ADI_ADRV9010_TX1, Types.adi_adrv9010_DpdErrorState_e.ADI_ADRV9010_DPD_ERR_STATE_PERSISTENT_1, dpdRecoveryActionFromDevice)
    print "Recovery Action - Metrics Mask Persistent 1 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdMetricsMask
    print "Recovery Action - Action Mask Persistent 1 =",dpdRecoveryActionFromDevice.dpdRecoveryAction.dpdActionMask
    print " "

#Create an Instance of the Class
link = AdiEvaluationSystem.Instance	
connect = False

if (link.IsConnected() == False):
    connect = True
    link.platform.board.Client.Connect("192.168.1.145", 55556) 
    print "Connecting"

if (link.IsConnected()):
    adrv9010 = link.Adrv9010Get(1)
    print "Connected"
    ##### YOUR CODE GOES HERE #####
    dpdStabilityCondnSetup()
    dpdRecoveryActionConfigSet()
    dpdRecoveryActionConfigGet()
    print "DPD Recovery Actions Configuration Complete"
else:
    print "Not Connected"

if (connect):
    link.platform.board.Client.Disconnect()
    print "Disconnected"
        

        


        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on Nov 22, 2023 9:21 PM
            
            
												
						in reply to Ramarao
					
									
          
	
          

		
		
          
					
          Hi Ramarao：
          

          The DpdUpdateMode is 2，I have used the recovery action script, it worked normal. thanks.
          

          I want to know how to calculate the dpdMThreshold and minAvgSignalLevel that were configured in API adi_adrv9025_DpdTrackingConfigSet.
          

           
          

          Best regards!
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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          •  Analog Employees  
          
            
						
                            
            
            				
            
                on Nov 23, 2023 7:00 AM
            
            
												
						in reply to ecochip
					
									
          
	
          

		
		
          
					
          M-Threshold is to set the Max-power threshold. In DPD update Mode 2, you would have 2 Tables, one is C-Table which is used for Low power and another one is M-Table which is for high power. More details in the UG.
          

           
          

          You need to run a small test to exactly know the M-threshold.
          

           
          

          Could you please let us know the reason for using Update Mode 2? Are you using GaN or your signal varies dynamically, if so using Mode 2 is fine otherwise we would suggest to use Mode 0.
          

          minAvgsignal level is the signal level above which the DPD will start operating. If the capturesd signal level is below this threshold, the DPD would be in unity gain mode/ DPD in Bypass mode.
          

           
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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													0
							
			
				
									
							        
			
			
			
            
            
						
                            
            
            				
            
                on Nov 23, 2023 10:07 PM
            
            
												
						in reply to Ramarao
					
									
            
	
            

		
		
            
					
            Thanks for your guidance about M-Threshold.
            

             I want to figure out how to calculate number:1044914=-21dBFs for dpdMThreshold, number 519 equal to -36dBFs for minAvgSignalLevel?
            

             
            

            The system use GaN PA and the signal varies dynamically. The dpdMode was set 0 defore, but dpd worked unstabilized, so we try to use Mode 2, it works better now. 
            

            Best regards!
            
			
            

		
			
	      

		
		
	
            
	
            
		
            
			
		
            
	
            
	
            
		
						
						
				
						
				
				
		
		
            
			
		
            
	
            

            

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            •  Analog Employees  
            
            
						
                            
            
            				
            
                on Nov 30, 2023 12:26 AM
            
            
												
						in reply to ecochip
					
									
            
	
            

		
		
            
					
            I hope i have provided all the details on your queries and you are not waiting for any more inputs. Thanks.
            
			
            

		
			
	      

		
		
	
            
	
            
		
            
			
		
            
	
            
	
            
		
						
						
				
						
				
				
		
		
            
			
		
            
	
            

            

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                on Nov 30, 2023 12:43 AM
            
            
												
						in reply to Ramarao
					
									
              
	
              

		
		
              
					
              Hi Ramarao：
              

              Can you tell me the calculation formula of dpdMThreshold,  Is 1044914 for -21dBFs?
              
			
              

		
			
	      

		
		
	
              
	
              
		
              
			
		
              
	
              
	
              
		
						
						
				
						
				
				
		
		
              
			
		
              
	
              

              

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              •  Analog Employees  
              
            
						
                            
            
            				
            
                on Nov 30, 2023 1:53 AM
            
            
												
						in reply to ecochip
					
									
              
	
              

		
		
              
					
              NO, thats not correct.
              

              -21dBFS in linear value will be 8529034. Please see below for the calculations. Full scale code is 32768 here.
              

               
              
			
              

		
			
	      

		
		
	
              
	
              
		
              
			
		
              
	
              
	
              
		
						
				
						
						
				
				
		
		
              
			
		
              
	
              

              

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