diff --git a/BF_companion b/BF_companion
index 2d24aaa..3408e2b 100755
Binary files a/BF_companion and b/BF_companion differ
diff --git a/main.c b/main.c
index a8ef4c7..53f6918 100644
--- a/main.c
+++ b/main.c
@@ -153,8 +153,38 @@ const int FFT_length = 1000;
 static uint32_t f_channels[ADC_LCH_CNT] = {0, 0, 1, 0};
 // режимы измерения для каналов //
 static uint32_t f_ch_modes[ADC_LCH_CNT] = {X502_LCH_MODE_COMM, X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM};
+//static uint32_t f_ch_modes[ADC_LCH_CNT] = {X502_LCH_MODE_COMM};
+//static uint32_t f_ch_modes[ADC_LCH_CNT] = {X502_LCH_MODE_COMM, X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM,X502_LCH_MODE_COMM};
+//static uint32_t f_ch_modes[ADC_LCH_CNT] = {X502_LCH_MODE_COMM, X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO,X502_LCH_MODE_ZERO};
+//X502_LCH_MODE_COMM0
+//X502_LCH_MODE_DIFF
+//X502_LCH_MODE_ZERO
+
 // диапазоны измерения для каналов //
 static uint32_t f_ch_ranges[ADC_LCH_CNT] = {X502_ADC_RANGE_5, X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5};
+//static uint32_t f_ch_ranges[ADC_LCH_CNT] = {X502_ADC_RANGE_1};
+//static uint32_t f_ch_ranges[ADC_LCH_CNT] = {X502_ADC_RANGE_1, X502_ADC_RANGE_1,X502_ADC_RANGE_1,X502_ADC_RANGE_1,X502_ADC_RANGE_1,X502_ADC_RANGE_1, X502_ADC_RANGE_1,X502_ADC_RANGE_1,X502_ADC_RANGE_1,X502_ADC_RANGE_1};
+//static uint32_t f_ch_ranges[ADC_LCH_CNT] = {X502_ADC_RANGE_5, X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5, X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5,X502_ADC_RANGE_5};
+//X502_ADC_RANGE_10  Диапазон +/-10V
+//X502_ADC_RANGE_5  Диапазон +/-5V
+//X502_ADC_RANGE_2  Диапазон +/-2V
+//X502_ADC_RANGE_1  Диапазон +/-1V
+//X502_ADC_RANGE_05  Диапазон +/-0.5V
+//X502_ADC_RANGE_02  Диапазон +/-0.2V
+
+
+
+#define SYNC_FREC_SOURCE X502_SYNC_DI_SYN1_FALL
+#define SYNC_START_SOURCE X502_SYNC_DI_SYN2_RISE
+
+
+
+//X502_SYNC_INTERNAL
+//X502_SYNC_EXTERNAL_MASTER1
+//X502_SYNC_DI_SYN1_RISE
+//X502_SYNC_DI_SYN1_FALL
+//X502_SYNC_DI_SYN2_RISE
+//X502_SYNC_DI_SYN2_FALL
 
 
 
@@ -390,11 +420,35 @@ int32_t f_setup_params(t_x502_hnd hnd) {
     
     //=======================================================//
     //for debug purposes:
-    X502_SetRefFreq(hnd, X502_REF_FREQ_2000KHZ);
-    X502_SetSyncMode(hnd, X502_SYNC_DI_SYN1_FALL);
+//    X502_SetRefFreq(hnd, X502_REF_FREQ_2000KHZ);
+//    X502_SetSyncMode(hnd, X502_SYNC_DI_SYN1_FALL);
     //X502_SetSyncMode(hnd, X502_SYNC_INTERNAL);
     //X502_SetSyncStartMode(hnd, X502_SYNC_INTERNAL); //start ADC samping after executing X502_StreamsStart()
-    X502_SetSyncStartMode(hnd, X502_SYNC_DI_SYN2_RISE); //start ADC sampling by external trigger
+//    X502_SetSyncStartMode(hnd, X502_SYNC_DI_SYN2_RISE); //start ADC sampling by external trigger
+
+    X502_SetSyncMode(hnd, SYNC_FREC_SOURCE);
+    //X502_SetSyncMode(hnd, X502_SYNC_INTERNAL);
+    X502_SetSyncStartMode(hnd, SYNC_START_SOURCE);
+
+    //X502_SYNC_INTERNAL
+    //X502_SYNC_EXTERNAL_MASTER1
+    //X502_SYNC_DI_SYN1_RISE
+    //X502_SYNC_DI_SYN1_FALL
+    //X502_SYNC_DI_SYN2_RISE
+    //X502_SYNC_DI_SYN2_FALL
+
+      //set ADC sample frequency from internal generator with frequency 2 MHz
+    //X502_SetRefFreq(hnd, X502_REF_FREQ_1500KHZ);
+    //X502_REF_FREQ_1500KHZ
+    //X502_REF_FREQ_2000KHZ
+
+
+
+
+
+
+
+
 
     
     
@@ -1088,6 +1142,17 @@ int main(int argc, char** argv) {
         char logfilename[] = "                                                 ";
 		sprintf(&logfilename, "received_data_%ld.csv", seconds);
 		//logfile_ptr = fopen(logfilename, "w");
+		FILE *logfile_ptr;
+		logfile_ptr = fopen(logfilename, "a");
+
+		fprintf(logfile_ptr, "sync_frec_source: %d \nsync_start_source: %d \n", SYNC_FREC_SOURCE, SYNC_START_SOURCE);
+
+		for (int chan_I = 0; chan_I < ADC_LCH_CNT; chan_I++){
+			fprintf(logfile_ptr, "chan: %d, mode: %d, range: %d \n", chan_I, f_ch_modes[chan_I], f_ch_ranges[chan_I]);
+		}
+		fclose(logfile_ptr);
+
+
 		printf("dumping to file: %s\n", logfilename);
 
 		printf("\n");