diff --git a/For_stm32.ioc b/For_stm32.ioc
index 303897d..5d8daa6 100644
--- a/For_stm32.ioc
+++ b/For_stm32.ioc
@@ -594,8 +594,8 @@ TIM10.Prescaler=183
 TIM11.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
 TIM11.Channel=TIM_CHANNEL_1
 TIM11.IPParameters=Prescaler,Period,AutoReloadPreload,Channel,Pulse
-TIM11.Period=183
-TIM11.Prescaler=0
+TIM11.Period=91
+TIM11.Prescaler=1
 TIM11.Pulse=91
 TIM2.ClockDivision=TIM_CLOCKDIVISION_DIV1
 TIM2.IPParameters=Period,ClockDivision,Prescaler
diff --git a/Src/main.c b/Src/main.c
index b4060f7..a14cbda 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -171,8 +171,25 @@ int main(void)
   MX_TIM4_Init();
   /* USER CODE BEGIN 2 */
 	Init_params();
-	HAL_TIM_Base_Start(&htim11);
-	HAL_TIM_PWM_Start(&htim11, TIM_CHANNEL_1); //start modulating by Mach-Zander modulator
+	//HAL_TIM_Base_Start(&htim11);
+	//HAL_TIM_PWM_Start(&htim11, TIM_CHANNEL_1); //start modulating by Mach-Zander modulator
+
+
+    //TIM4,11 clocks = 92 MHz
+
+	//ADC clock
+	//TIM4 -> ARR = 60; // for 1.5 MHz
+	//TIM4 -> ARR = 91; // for 1 MHz
+	//TIM4 -> ARR = 45; // for 2 MHz
+	TIM4 -> ARR = 53; // for 1.735 MHz. It`s the highest frequency for correct ADC work. At higher freq artifacts (voltage peaks) appears.
+
+	TIM4 -> CCR3 = (TIM4 -> ARR +1)/2 - 1;
+
+
+	//Mach-Zander clock (should be half of ADC clock freq)
+	TIM11 -> ARR = (TIM4 -> ARR +1)*2 - 1;
+	TIM11 -> CCR1 = (TIM11 -> ARR +1)/2 - 1;
+
 	/*
   if (HAL_GPIO_ReadPin(INP_0_GPIO_Port, INP_0_Pin) == 0){
 
@@ -363,6 +380,25 @@ int main(void)
 					switch (task.task_type)
 					{
 					case TT_CHANGE_CURR_1:
+
+
+						//calculating timer periods for ADC clock and Mach-Zander modulator
+						//ADC clock
+						//TIM4 -> ARR = 60; // for 1.5 MHz
+						//TIM4 -> ARR = 91; // for 1 MHz
+						//TIM4 -> ARR = 45; // for 2 MHz
+
+						//online calculation for debug purposes:
+						//manually varying TIM4 -> ARR by debugger while running
+						//TIM4 -> CCR3 = (TIM4 -> ARR +1)/2 - 1;
+
+
+						//Mach-Zander clock (should be half of ADC clock freq)
+						//TIM11 -> ARR = (TIM4 -> ARR +1)*2 - 1;
+						//TIM11 -> CCR1 = (TIM11 -> ARR +1)/2 - 1;
+
+
+
 						Set_LTEC(TT_CHANGE_CURR_2, task.curr);
 						(void) MPhD_T(TT_CHANGE_TEMP_1);
 						LD1_param.LD_CURR_TEMP = MPhD_T(TT_CHANGE_TEMP_1);
@@ -1472,9 +1508,9 @@ static void MX_TIM11_Init(void)
 
   /* USER CODE END TIM11_Init 1 */
   htim11.Instance = TIM11;
-  htim11.Init.Prescaler = 0;
+  htim11.Init.Prescaler = 1;
   htim11.Init.CounterMode = TIM_COUNTERMODE_UP;
-  htim11.Init.Period = 183;
+  htim11.Init.Period = 91;
   htim11.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
   htim11.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
   if (HAL_TIM_Base_Init(&htim11) != HAL_OK)