diff --git a/das-dn/hostadsbf/hostadsbf.cpp b/das-dn/hostadsbf/hostadsbf.cpp
index 84b8a3d9..7305c362 100644
--- a/das-dn/hostadsbf/hostadsbf.cpp
+++ b/das-dn/hostadsbf/hostadsbf.cpp
@@ -963,10 +963,8 @@ BOOLEAN CHostADSBFProcess::OnTimer(void)
         last_sec = system32.timers;
         sec_changed = TRUE;
     }
-    vLog(LOG_DEBUG, "%s sec is changed %d\n", m_pidName.c_str(), sec_changed);
     if (sec_changed)
     {
-        vLog(LOG_DEBUG, "%s not connected.\n", m_pidName.c_str());
         if (m_turbine == NULL)
         {
             vLog(LOG_DEBUG, "%s not connected.\n", m_pidName.c_str());
@@ -1091,6 +1089,7 @@ BOOLEAN CHostADSBFProcess::readRealData()
 
     for (int k = 0; k < 4; k++)
     {
+        vLog(LOG_DEBUG, "start to read %d\n", k);
         if (!m_adsDatas[k].inuse) continue;
         WORD m_adsOverviewDataMemAddr = m_adsDatas[k].adsDataMemAddr;
         register2typemap    m_register2type_map = m_adsDatas[k].adsDataBlocks;