diff --git a/BSP/Driver/usart/Usart.c b/BSP/Driver/usart/Usart.c
index 2d19e5f..ff6f9ee 100644
--- a/BSP/Driver/usart/Usart.c
+++ b/BSP/Driver/usart/Usart.c
@@ -237,7 +237,7 @@ void ptz_uart_dev_send(device_handle device, void *data, int len)
    if(device == uart_485_handle)
    {
      PTZ_UART_485_TX;
-     OSTimeDlyHMSM(0u, 0u, 0u, 10u);
+     OSTimeDlyHMSM(0u, 0u, 0u, 1u);
    
      for (int i = 0; i<len; i++)
      {
@@ -254,7 +254,7 @@ void ptz_uart_dev_send(device_handle device, void *data, int len)
        }
      }
     
-     OSTimeDlyHMSM(0u, 0u, 0u, 10u);
+     OSTimeDlyHMSM(0u, 0u, 0u, 1u);
      PTZ_UART_485_RX;
    }