diff --git a/include/villas/nodes/smu.hpp b/include/villas/nodes/smu.hpp
index d8b0959ed..6b6e792c0 100644
--- a/include/villas/nodes/smu.hpp
+++ b/include/villas/nodes/smu.hpp
@@ -152,7 +152,10 @@ typedef struct {
     float k[SMU_NCH];
 } __attribute__((__packed__)) smu_mcsk_t;
 
-
+typedef struct {
+    int64_t     tv_sec;
+    long        tv_nsec;
+} __attribute__((__packed__)) timespec64_t;
 /**
  * @brief  IOCTL definitions
  *
@@ -165,8 +168,10 @@ typedef struct {
 #define SMU_IOC_RESET       _IO (SMU_IOC_MAGIC, 1)
 #define SMU_IOC_START       _IO (SMU_IOC_MAGIC, 2)
 #define SMU_IOC_STOP        _IO (SMU_IOC_MAGIC, 3)
-#define SMU_IOC_SET_CONF    _IOW(SMU_IOC_MAGIC, 4, smu_conf_t*)
-#define SMU_IOC_GET_CONF    _IOR(SMU_IOC_MAGIC, 5, smu_conf_t*)
+#define SMU_IOC_GET_TIME    _IOR(SMU_IOC_MAGIC, 4, timespec64_t*)
+#define SMU_IOC_SET_CONF    _IOW(SMU_IOC_MAGIC, 5, smu_conf_t*)
+#define SMU_IOC_GET_CONF    _IOR(SMU_IOC_MAGIC, 6, smu_conf_t*)
+
 
 /**
  * @brief  Signal definitions
@@ -190,7 +195,7 @@ private:
     daq_sync_t sync;
     smu_daq_t daq_cfg;
     Dumper dumpers[SMU_NCH];
-    int fd;
+    static inline int fd;
     uint8_t* shared_mem;
     uint32_t shared_mem_pos;
     uint32_t shared_mem_inc;
@@ -202,6 +207,9 @@ private:
     static inline std::atomic<size_t> mem_pos = 0;
     static inline pthread_mutex_t mutex;
     static inline pthread_cond_t cv;
+    static inline timespec64_t sync_signal_mem_pos = {0};
+    static inline timespec sample_time ={0};
+    static inline int sec_cnt = 0;
 
 protected:
 	virtual
diff --git a/lib/nodes/smu.cpp b/lib/nodes/smu.cpp
index af3f1a23d..1aa9ad30c 100644
--- a/lib/nodes/smu.cpp
+++ b/lib/nodes/smu.cpp
@@ -241,9 +241,15 @@ int SMUNode::stop()
 void SMUNode::sync_signal(int, siginfo_t *info, void*)
 {
 
-	//mem_pos = (info->si_value.sival_int);
-	/* Signal uldaq_read() about new data */
-	//pthread_cond_signal(&u->in.cv);
+    
+    ioctl(fd, SMU_IOC_GET_TIME,&sync_signal_mem_pos);
+    sample_time.tv_nsec = sync_signal_mem_pos.tv_nsec;
+    sample_time.tv_sec = sync_signal_mem_pos.tv_sec;
+
+    if (sample_time.tv_nsec > 500000000)
+         sample_time.tv_sec += 1;
+    sec_cnt = 0;
+    //std::cout << "pps event";
 }
 
 void SMUNode::data_available_signal(int, siginfo_t *info, void*)
@@ -258,8 +264,8 @@ void SMUNode::data_available_signal(int, siginfo_t *info, void*)
 int SMUNode::_read(struct Sample *smps[], unsigned cnt)
 {
 	struct timespec ts;
-	ts.tv_sec = time(nullptr);
-	ts.tv_nsec = 0;
+	ts.tv_sec = sample_time.tv_sec;
+	ts.tv_nsec = sec_cnt * 1e9 / fps;
 
     pthread_mutex_lock(&mutex);
 
@@ -271,6 +277,7 @@ int SMUNode::_read(struct Sample *smps[], unsigned cnt)
 
     for (unsigned j = 0; j < cnt; j++) {
         struct Sample *t = smps[j];
+        ts.tv_nsec += 1000 * 1000 * sample_rate;
 
         for (unsigned i = 0; i < 8; i++) {
             int16_t data = p[mem_pos_local].ch[i];
@@ -280,6 +287,7 @@ int SMUNode::_read(struct Sample *smps[], unsigned cnt)
         }
 
         mem_pos_local++;
+        ts.tv_nsec = 0;
 
         t->flags = (int) SampleFlags::HAS_TS_ORIGIN | (int) SampleFlags::HAS_DATA | (int) SampleFlags::HAS_SEQUENCE;
         t->ts.origin = ts;