diff --git a/src/laser_diode/laser_diode.rs b/src/laser_diode/laser_diode.rs
index 57bd8e4..1fe5fd9 100644
--- a/src/laser_diode/laser_diode.rs
+++ b/src/laser_diode/laser_diode.rs
@@ -104,8 +104,12 @@ impl LdDrive{
         self.ctrl.ld_short_disable();
     }
 
-    pub fn power_up(&mut self){
+    pub fn power_up(&mut self){            
+        let _ = self.ctrl.set_i(ElectricCurrent::new::<milliampere>(0.0), Settings::LD_DRIVE_TRANSIMPEDANCE, Settings::DAC_OUT_V_MAX);
         LdPwrExcProtector::pwr_on_and_arm_protection();
+        // Wait for LD Power Supply to start up before driving current to laser diode
+        sleep(30);
+        self.ld_set_i(self.settings.ld_drive_current);
     }
 
     pub fn power_down(&mut self){