diff --git a/vna_system/core/laser/laser_controller.py b/vna_system/core/laser/laser_controller.py
index 2385ede..bd45661 100644
--- a/vna_system/core/laser/laser_controller.py
+++ b/vna_system/core/laser/laser_controller.py
@@ -135,6 +135,31 @@ class LaserController:
         Uses TASK_ENABLE (0x7777) command with TaskType.
         """
         try:
+            # First, send initial control parameters to set the device to starting values
+            logger.info("Setting initial control parameters before scan...")
+            initial_params = {
+                'Temp_1': parameters.min_temp_1,
+                'Temp_2': parameters.min_temp_2,
+                'Iset_1': parameters.min_current_1,
+                'Iset_2': parameters.min_current_2,
+                'ProportionalCoeff_1': self.proportional_coeff_1,
+                'ProportionalCoeff_2': self.proportional_coeff_2,
+                'IntegralCoeff_1': self.integral_coeff_1,
+                'IntegralCoeff_2': self.integral_coeff_2,
+                'Message_ID': self.message_id
+            }
+
+            logger.info(f"Initial parameters: T1={initial_params['Temp_1']}°C, T2={initial_params['Temp_2']}°C, "
+                       f"I1={initial_params['Iset_1']} mA, I2={initial_params['Iset_2']} mA")
+
+            # Send initial control parameters
+            dev.send_control_parameters(self.prt, initial_params)
+            logger.info("Initial control parameters sent successfully")
+
+            # Small delay to allow device to process
+            import time
+            time.sleep(0.2)
+
             # Determine which parameter to scan
             if parameters.enable_c1:
                 task_type = cmd.TaskType.ChangeCurrentLD1.value