diff --git a/FSUDAQ.cpp b/FSUDAQ.cpp
index e162f5a..2a29f5b 100644
--- a/FSUDAQ.cpp
+++ b/FSUDAQ.cpp
@@ -1089,7 +1089,7 @@ void MainWindow::StartACQ(){
   {//^=== elog and database
     if( influx ){
       influx->AddDataPoint("RunID value=" + std::to_string(runID));
-      if( elogName != "" ) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=1");
+      if( !elogName.isEmpty() ) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=1");
       influx->WriteData(dataBaseName.toStdString());
       influx->ClearDataPointsBuffer();
     }
@@ -1169,7 +1169,7 @@ void MainWindow::StopACQ(){
 
   {//^=== elog and database
     if( influx && elogName != "" ) {
-      influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=0");
+      if( !elogName.isEmpty() ) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=0");
       influx->WriteData(dataBaseName.toStdString());
       influx->ClearDataPointsBuffer();
     }
@@ -1493,10 +1493,10 @@ void MainWindow::OpenScope(){
       if( scope  ) {
         if( onOff ) {
           lbScalarACQStatus->setText("<font style=\"color: green;\"><b>ACQ On</b></font>");
-          if( influx ) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=1");
+          if( influx && !elogName.isEmpty()) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=1");
         }else{
           lbScalarACQStatus->setText("<font style=\"color: red;\"><b>ACQ Off</b></font>");
-          if( influx ) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=0");
+          if( influx && !elogName.isEmpty()) influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=0");
         }
         if( influx ){
           influx->WriteData(dataBaseName.toStdString());
diff --git a/Scope.cpp b/Scope.cpp
index 77d171f..5db57ec 100644
--- a/Scope.cpp
+++ b/Scope.cpp
@@ -363,29 +363,30 @@ void Scope::StartScope(){
   //TODO set other channel to be no trace;
   emit UpdateOtherPanels();
 
-  for( unsigned int iDigi = 0; iDigi < nDigi; iDigi ++){
+  for( int iDigi = (int)nDigi-1 ; iDigi >= 0; iDigi --){
 
     traceOn[iDigi] = digi[iDigi]->IsRecordTrace(); //remember setting
+    SendLogMsg("Digi-" + QString::number(digi[iDigi]->GetSerialNumber()) + " is starting ACQ." );
+    digi[iDigi]->WriteRegister(DPP::SoftwareClear_W, 1);
     digi[iDigi]->GetData()->ClearData();
     digi[iDigi]->SetBits(DPP::BoardConfiguration, DPP::Bit_BoardConfig::RecordTrace, 1, -1);
+
+    readDataThread[iDigi]->SetScopeMode(true);
+    readDataThread[iDigi]->SetSaveData(false);
+
     digi[iDigi]->StartACQ();
 
 //    printf("----- readDataThread running ? %d.\n", readDataThread[iDigi]->isRunning());
-    if( readDataThread[iDigi]->isRunning() ){
-      readDataThread[iDigi]->quit();
-      readDataThread[iDigi]->wait();
-    }
-    readDataThread[iDigi]->SetScopeMode(true);
-    readDataThread[iDigi]->SetSaveData(false);
+    // if( readDataThread[iDigi]->isRunning() ){
+    //   readDataThread[iDigi]->quit();
+    //   readDataThread[iDigi]->wait();
+    // }
     readDataThread[iDigi]->start();
 //    printf("----- readDataThread running ? %d.\n", readDataThread[iDigi]->isRunning());
   }
 
-  printf("=========================== 1\n");
-
   updateTraceThread->start();
   updateScalarThread->start();
-  printf("=========================== 2\n");
 
   bnScopeStart->setEnabled(false);
   bnScopeStart->setStyleSheet("");
@@ -393,7 +394,6 @@ void Scope::StartScope(){
   bnScopeStop->setStyleSheet("background-color: red;");
 
   EnableControl(false);
-  printf("=========================== 3\n");
 
   TellACQOnOff(true);
 
diff --git a/influxdb.cpp b/influxdb.cpp
index f440532..430a007 100644
--- a/influxdb.cpp
+++ b/influxdb.cpp
@@ -117,18 +117,22 @@ void InfluxDB::CreateDatabase(std::string databaseName){
 }
 
 void InfluxDB::AddDataPoint(std::string fullString){
+  // printf(" InfluxDB::%s |%s| \n", __func__, fullString.c_str());
   dataPoints += fullString + "\n";
 }
 
 void InfluxDB::ClearDataPointsBuffer(){
+  // printf(" InfluxDB::%s \n", __func__);
   dataPoints = "";
 }
 
 void InfluxDB::PrintDataPoints(){
+  // printf(" InfluxDB::%s \n", __func__);
   printf("%s\n", dataPoints.c_str());
 }
 
 void InfluxDB::WriteData(std::string databaseName){  
+  // printf(" InfluxDB::%s \n", __func__);
   if( dataPoints.length() == 0 ) return;
   //printf("|%s|\n", (databaseIP + "write?db=" + databaseName).c_str());
   curl_easy_setopt(curl, CURLOPT_URL, (databaseIP + "write?db=" + databaseName).c_str());
@@ -140,6 +144,7 @@ void InfluxDB::WriteData(std::string databaseName){
 
 
 void InfluxDB::Execute(){
+  // printf(" InfluxDB::%s \n", __func__);
   try{
     respond = curl_easy_perform(curl);
     curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &respondCode);
@@ -152,6 +157,7 @@ void InfluxDB::Execute(){
 }
 
 size_t InfluxDB::WriteCallBack(char *contents, size_t size, size_t nmemb, void *userp){
+  // printf(" InfluxDB::%s \n", __func__);
   ((std::string*)userp)->append((char*)contents, size * nmemb);
   return size * nmemb;
 }