diff --git a/ClassDigitizer2Gen.cpp b/ClassDigitizer2Gen.cpp
index f4b08b9..4de19cf 100644
--- a/ClassDigitizer2Gen.cpp
+++ b/ClassDigitizer2Gen.cpp
@@ -45,6 +45,9 @@ void Digitizer2Gen::Initialization(){
     VGASetting[index] = PHA::VGA::VGAGain;
     LVDSSettings[index] = PHA::LVDS::AllSettings;
   }
+  for( int idx = 0; idx < 16; idx ++){
+    InputDelay[idx] = PHA::GROUP::InputDelay;
+  }
 
   //build map
   for( int i = 0; i < (int) PHA::DIG::AllSettings.size(); i++) boardMap[PHA::DIG::AllSettings[i].GetPara()] = i;
@@ -131,7 +134,7 @@ std::string Digitizer2Gen::ReadValue(const Reg para, int ch_index,  bool verbose
     case TYPE::DIG : boardSettings[index].SetValue(ans); break;
     case TYPE::VGA : VGASetting[ch_index].SetValue(ans); break;
     case TYPE::LVDS: LVDSSettings[ch_index][index].SetValue(ans);break;
-    case TYPE::GROUP: break; //^ GROUP is not implemented
+    case TYPE::GROUP: InputDelay[ch_index].SetValue(ans); break; 
   }
   
   //printf("%s | %s | index %d | %s \n", para.GetFullPara(ch_index).c_str(), ans.c_str(), index, chSettings[ch_index][index].GetValue().c_str());
@@ -183,7 +186,7 @@ bool Digitizer2Gen::WriteValue(const Reg para, std::string value, int ch_index){
           //                     boardSettings[index].GetValue().c_str()); 
         }break;
         case TYPE::LVDS : LVDSSettings[ch_index][index].SetValue(value); break;
-        case TYPE::GROUP : break;
+        case TYPE::GROUP : InputDelay[ch_index].SetValue(value); break;
 
       }
     }
@@ -255,6 +258,9 @@ int Digitizer2Gen::OpenDigitizer(const char * url){
       VGASetting[index] = PHA::VGA::VGAGain;
       LVDSSettings[index] = PHA::LVDS::AllSettings;
     }
+    for( int idx = 0; idx < 16; idx ++ ){
+      InputDelay[idx] = PHA::GROUP::InputDelay;
+    }
 
     //build map
     for( int i = 0; i < (int) PHA::DIG::AllSettings.size(); i++) boardMap[PHA::DIG::AllSettings[i].GetPara()] = i;
@@ -271,6 +277,9 @@ int Digitizer2Gen::OpenDigitizer(const char * url){
       VGASetting[index] = PSD::VGA::VGAGain;
       LVDSSettings[index] = PSD::LVDS::AllSettings;
     }
+    for( int idx = 0; idx < 16; idx ++ ){
+      InputDelay[idx] = PSD::GROUP::InputDelay;
+    }
 
     //build map
     for( int i = 0; i < (int) PSD::DIG::AllSettings.size(); i++) boardMap[PSD::DIG::AllSettings[i].GetPara()] = i;
@@ -1070,6 +1079,12 @@ void Digitizer2Gen::PrintBoardSettings(){
     }
   }
 
+  for(int idx = 0; idx < 16 ; idx ++ ){
+    printf("%-45s  %d  %s\n", InputDelay[idx].GetFullPara(idx).c_str(), 
+                              InputDelay[idx].ReadWrite(), 
+                              InputDelay[idx].GetValue().c_str());
+  }
+
   for( int i = 0; i < (int) LVDSSettings[0].size(); i++){
     for( int index = 0; index < 4; index++){
       if( LVDSSettings[index][i].ReadWrite() == RW::WriteOnly) continue;
@@ -1129,6 +1144,8 @@ void Digitizer2Gen::ReadAllSettings(){
 
   if( ModelName == "VX2745") for(int i = 0; i < 4 ; i ++) ReadValue(VGASetting[i], i);
 
+  for( int idx = 0; idx < 16; idx++) ReadValue(InputDelay[idx], idx, false);
+
   for( int index = 0; index < 4; index++){
     for( int i = 0; i < (int) LVDSSettings[index].size(); i++){
       if( LVDSSettings[index][i].ReadWrite() == RW::WriteOnly) continue;
@@ -1185,6 +1202,20 @@ int Digitizer2Gen::SaveSettingsToFile(const char * saveFileName, bool setReadOnl
       count ++;
     }
 
+    for( int idx = 0; idx < 16; idx ++){
+      totCount ++;
+      if( InputDelay[idx].GetValue() == "" ) {
+        printf(" No value for %s \n", InputDelay[idx].GetPara().c_str());
+        continue;
+      }
+      fprintf(saveFile, "%-45s!%d!%4d!%s\n", InputDelay[idx].GetFullPara(idx).c_str(), 
+                                             InputDelay[idx].ReadWrite(), 
+                                             9050 + idx,
+                                             InputDelay[idx].GetValue().c_str());
+    count ++;
+      
+    }
+
     if( ModelName == "VX2745" && FPGAType == DPPType::PHA) {
       for(int i = 0; i < 4 ; i ++){
         totCount ++;
@@ -1316,8 +1347,10 @@ bool Digitizer2Gen::LoadSettingsFromFile(const char * loadFileName){
         //printf("%s|%d|%d|%s\n", boardSettings[id-8000].GetFullPara().c_str(),
         //                        boardSettings[id-8000].ReadWrite(), id,
         //                        boardSettings[id-8000].GetValue().c_str());
-      }else{ // vga
+      }else if ( 9000 <= id && id < 9050){ // vga
         VGASetting[id - 9000].SetValue(value);
+      }else{ // group
+        InputDelay[id - 9050].SetValue(value);
       }
       //printf("%s|%s|%d|%s|\n", para, readWrite, id, value);
       if( std::strcmp(readWrite, "2") == 0 && isConnected)  WriteValue(para, value, false);
@@ -1340,10 +1373,11 @@ bool Digitizer2Gen::LoadSettingsFromFile(const char * loadFileName){
 std::string Digitizer2Gen::GetSettingValue(const Reg para, unsigned int ch_index) {
   int index = FindIndex(para);
   switch (para.GetType()){
-    case TYPE::DIG:  return boardSettings[index].GetValue();
-    case TYPE::CH:   return chSettings[ch_index][index].GetValue();
-    case TYPE::VGA:  return VGASetting[ch_index].GetValue();
-    case TYPE::LVDS: return LVDSSettings[ch_index][index].GetValue();
+    case TYPE::DIG:   return boardSettings[index].GetValue();
+    case TYPE::CH:    return chSettings[ch_index][index].GetValue();
+    case TYPE::VGA:   return VGASetting[ch_index].GetValue();
+    case TYPE::LVDS:  return LVDSSettings[ch_index][index].GetValue();
+    case TYPE::GROUP: return InputDelay[ch_index].GetValue();
     default : return "invalid";
   }
   return "no such parameter";
diff --git a/ClassDigitizer2Gen.h b/ClassDigitizer2Gen.h
index 8c2a5c8..e883228 100644
--- a/ClassDigitizer2Gen.h
+++ b/ClassDigitizer2Gen.h
@@ -12,6 +12,7 @@
 #define MaxOutFileSize 2*1024*1024*1024  //2GB
 //#define MaxOutFileSize 20*1024*1024  //20MB
 #define MaxNumberOfChannel 64
+#define MaxNumberOfGroup 16
 
 #include "DigiParameters.h"
 
@@ -62,6 +63,7 @@ class Digitizer2Gen {
     std::vector<Reg> chSettings[MaxNumberOfChannel];
     std::vector<Reg> LVDSSettings[4];
     Reg VGASetting[4]; 
+    Reg InputDelay[16];
 
     std::map<std::string, int> boardMap;
     std::map<std::string, int> LVDSMap;
diff --git a/DigiParameters.h b/DigiParameters.h
index 702cd2c..f33e4c8 100644
--- a/DigiParameters.h
+++ b/DigiParameters.h
@@ -70,7 +70,7 @@ class Reg {
         case TYPE::CH:{
             std::string haha = "/par/";
             if( isCmd ){
-              haha = "/cmd/";
+              haha = "/cmd/"; // for SendChSWTrigger, not in GUI
             }
             if( ch_index == -1 ){ 
               return "/ch/0..63" + haha + name;
@@ -94,7 +94,7 @@ class Reg {
           }; break;
         case TYPE::GROUP:{
            if( ch_index == -1 ){ 
-              return "/group/0..16/par/" + name;
+              return "/group/0..15/par/" + name;
             }else{
              return "/group/" + std::to_string(ch_index) + "/par/" + name;
             }
@@ -173,7 +173,6 @@ namespace PHA{
     const Reg ErrorFlags               ("ErrorFlags", RW::ReadOnly, TYPE::DIG, {}, ANSTYPE::BINARY, "byte");
     const Reg BoardReady               ("BoardReady", RW::ReadOnly, TYPE::DIG, {{"True", "No Error"}, {"False", "Error"}});
 
-    //^ not impletemented
     const Reg SPFLinkPresence          ("SPFLinkPresence", RW::ReadOnly, TYPE::DIG, {{"True", "Inserted"}, {"False", "Disconnected"}});
     const Reg SPFLinkActive            ("SPFLinkActive",   RW::ReadOnly, TYPE::DIG, {{"True", "Active"}, {"False", "Deactive"}});
     const Reg SPFLinkProtocol          ("SPFLinkProtocal", RW::ReadOnly, TYPE::DIG, {{"Eth1G", "1 GB/s"}, {"Eth10G", "10 GB/s"}, {"CONET2", "Conet2"}});
@@ -353,6 +352,9 @@ namespace PHA{
       SpeedSensFan2            ,
       ErrorFlags               ,
       BoardReady               ,
+      // SPFLinkPresence          ,
+      // SPFLinkActive            ,
+      // SPFLinkProtocol          ,
       ClockSource              ,
       IO_Level                 ,
       StartSource              ,
@@ -402,7 +404,7 @@ namespace PHA{
   }
 
   namespace GROUP{
-    const Reg InputDelay ("InputDelay", RW::ReadWrite, TYPE::GROUP, {}, ANSTYPE::INTEGER, "S"); //^ Not impletemented.
+    const Reg InputDelay ("InputDelay", RW::ReadWrite, TYPE::GROUP, {{"0",""}, {"100", ""}, {"0.000001", ""}}, ANSTYPE::INTEGER, "sec");
   }
 
   namespace VGA{
@@ -427,6 +429,9 @@ namespace PHA{
 
   namespace CH{
 
+    /// ========= command
+    const Reg SendChSWTrigger      ("SendChSWrigger", RW::WriteOnly, TYPE::CH, {}, ANSTYPE::NONE, "", true);
+
     /// ========= red only
     const Reg SelfTrgRate          ("SelfTrgRate", RW::ReadOnly, TYPE::CH, {}, ANSTYPE::INTEGER, "Hz");
     const Reg ChannelStatus        ("ChStatus", RW::ReadOnly, TYPE::CH, {}, ANSTYPE::STR);
@@ -441,8 +446,8 @@ namespace PHA{
 
     /// ======= read write
     //^ not impletemented
-    const Reg SelfTriggerWidh  ("SelfTriggerWidth", RW::ReadWrite, TYPE::CH, {{"0", ""},{"6000", ""},{"8", ""}}, ANSTYPE::INTEGER, "ns"); // not sure the max 
-    const Reg SignalOffset     ("SignalOffset",     RW::ReadWrite, TYPE::CH, {{"0", ""},{"1000", ""},{"1", ""}}, ANSTYPE::INTEGER, "uV"); // not sure the max
+    const Reg SelfTriggerWidth  ("SelfTriggerWidth", RW::ReadWrite, TYPE::CH, {{"0", ""},{"6000", ""},{"8", ""}}, ANSTYPE::INTEGER, "ns"); // not sure the max 
+    const Reg SignalOffset      ("SignalOffset",     RW::ReadWrite, TYPE::CH, {{"0", ""},{"1000", ""},{"1", ""}}, ANSTYPE::INTEGER, "uV"); // not sure the max
 
 
     //^ impletemented
@@ -742,6 +747,11 @@ namespace PSD{
     const Reg ErrorFlags               = PHA::DIG::ErrorFlags;
     const Reg BoardReady               = PHA::DIG::BoardReady;
 
+    const Reg SPFLinkPresence          = PHA::DIG::SPFLinkPresence;
+    const Reg SPFLinkActive            = PHA::DIG::SPFLinkActive;
+    const Reg SPFLinkProtocol          = PHA::DIG::SPFLinkProtocol;
+  
+
 ///============= read write
     //const Reg EnableClockOutBackplane  ("EnClockOutP0", RW::ReadWrite, TYPE::DIG);
     const Reg ClockSource              = PHA::DIG::ClockSource;
@@ -852,6 +862,9 @@ namespace PSD{
       SpeedSensFan2            ,
       ErrorFlags               ,
       BoardReady               ,
+      // SPFLinkPresence          ,
+      // SPFLinkActive            ,
+      // SPFLinkProtocol          ,
       ClockSource              ,
       IO_Level                 ,
       StartSource              ,
@@ -899,6 +912,10 @@ namespace PSD{
 
   }
 
+  namespace GROUP{
+    const Reg InputDelay = PHA::GROUP::InputDelay;
+  }
+
   namespace VGA{
     const Reg VGAGain = PHA::VGA::VGAGain;
   }
@@ -917,6 +934,9 @@ namespace PSD{
 
   namespace CH{
 
+    /// ========= command
+    const Reg SendChSWTrigger      ("SendChSWrigger", RW::WriteOnly, TYPE::CH, {}, ANSTYPE::NONE, "", true);
+
     /// ========= red only
     const Reg SelfTrgRate          = PHA::CH::SelfTrgRate;
     const Reg ChannelStatus        = PHA::CH::ChannelStatus;
@@ -929,6 +949,11 @@ namespace PSD{
     const Reg ChannelWaveCount     = PHA::CH::ChannelWaveCount;
 
     /// ======= read write
+    //^ not impletemented
+    const Reg SelfTriggerWidth  = PHA::CH::SelfTriggerWidth; 
+    const Reg SignalOffset     = PHA::CH::SignalOffset;
+
+    //^ impletemented
     const Reg ChannelEnable    = PHA::CH::ChannelEnable;
     const Reg DC_Offset        = PHA::CH::DC_Offset;
     const Reg TriggerThreshold = PHA::CH::TriggerThreshold;
diff --git a/digiSettingsPanel.cpp b/digiSettingsPanel.cpp
index 4bfadda..ce8de87 100644
--- a/digiSettingsPanel.cpp
+++ b/digiSettingsPanel.cpp
@@ -107,7 +107,14 @@ DigiSettingsPanel::DigiSettingsPanel(Digitizer2Gen ** digi, unsigned short nDigi
         lab->setAlignment(Qt::AlignRight | Qt::AlignCenter);
         leInfo[iDigi][j] = new QLineEdit(digiTab[iDigi]);
         leInfo[iDigi][j]->setReadOnly(true);
-        leInfo[iDigi][j]->setText(QString::fromStdString(digi[iDigi]->ReadValue(infoIndex[j].second)));
+
+        Reg reg = infoIndex[j].second;
+        QString text = QString::fromStdString(digi[iDigi]->ReadValue(reg));
+        if( reg.GetPara() == PHA::DIG::ADC_SampleRate.GetPara() ) {
+          short tick2ns = 1000/ text.toInt();
+          text += " = " + QString::number(tick2ns, 'f', 1) + " ns" ;
+        }
+        leInfo[iDigi][j]->setText(text);
         infoLayout->addWidget(lab, j%nRow, 2*(j/nRow));
         infoLayout->addWidget(leInfo[iDigi][j], j%nRow, 2*(j/nRow) +1);
       }
@@ -781,6 +788,21 @@ DigiSettingsPanel::DigiSettingsPanel(Digitizer2Gen ** digi, unsigned short nDigi
 
       }
 
+      {//^====================== Group = InputDelay
+        bdGroup[iDigi] = new QWidget(this);
+        bdTab->addTab(bdGroup[iDigi], "Input Delay");
+        QGridLayout * groupLayout = new QGridLayout(bdGroup[iDigi]);
+        groupLayout->setAlignment(Qt::AlignTop );
+        //LVDSLayout->setSpacing(2);
+
+        for(int k = 0; k < MaxNumberOfGroup; k ++){
+          SetupSpinBox(spbInputDelay[iDigi][k], PHA::GROUP::InputDelay, k, false, "ch : " + QString::number(4*k) + " - " + QString::number(4*k+3) + " [s] ", groupLayout, k/4, 2*(k%4));
+          spbInputDelay[iDigi][k]->setDecimals(6);
+        }
+
+
+      }
+
     }
 
     {//^====================== Group channel settings
@@ -2588,6 +2610,11 @@ void DigiSettingsPanel::UpdatePanelFromMemory(bool onlyStatus){
     sbDACoutChSelect[ID]->setEnabled(false);
   }
 
+  //------------ Group
+  for( int k = 0 ; k < MaxNumberOfGroup; k++){
+    FillSpinBoxValueFromMemory(spbInputDelay[ID][k], PHA::GROUP::InputDelay, k); // PHA = PSD
+  }
+
 
   //@============================== Channel setting/ status
 
diff --git a/digiSettingsPanel.h b/digiSettingsPanel.h
index 2b17703..7abc727 100644
--- a/digiSettingsPanel.h
+++ b/digiSettingsPanel.h
@@ -65,6 +65,7 @@ private:
   QWidget * bdVGA[MaxNumberOfDigitizer];
   QWidget * bdLVDS[MaxNumberOfDigitizer];
   QWidget * bdITL[MaxNumberOfDigitizer];
+  QWidget * bdGroup[MaxNumberOfDigitizer];
 
 
   QGroupBox * box0[MaxNumberOfDigitizer];
@@ -206,6 +207,9 @@ private:
   QLineEdit   * chGainFactor[MaxNumberOfDigitizer][MaxNumberOfChannel];
   QLineEdit   * chADCToVolts[MaxNumberOfDigitizer][MaxNumberOfChannel];
 
+  //--------------- Group settings
+  RSpinBox * spbInputDelay[MaxNumberOfDigitizer][MaxNumberOfGroup];
+
   //--------------- Channel settings
   RComboBox * cbChPick[MaxNumberOfDigitizer];
 
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 8467d32..ded1d32 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -952,6 +952,7 @@ bool MainWindow::CheckSOLARISpanelOK(){
 
     return false;
   }
+  LogMsg("Found <b>" + file.fileName() + "</b>. Setting up SOLARIS panel.");
   mapping.clear();
   std::vector<int> singleDigiMap;
   detType.clear();