diff --git a/Console/Transmitter/m4iset_8ch.c b/Console/Transmitter/m4iset_8ch.c
index 320ba882ca1d2e258c77b161fc93de43cce0c3a4..40e1c0a3ea7f262ea39326ed2fefa1f16744809b 100644
--- a/Console/Transmitter/m4iset_8ch.c
+++ b/Console/Transmitter/m4iset_8ch.c
@@ -5,6 +5,15 @@
 
 #include <stdio.h>
 
+```c
+/**
+ * Set two m4i transmitter cards
+ *
+ * @param pvData   16-bit data pointer for the first transmit card (each card has 4 transmitter)
+ * @param pvData1  16-bit data pointer for the second transmit card 
+ * @param lMemsize 32-bit memory length for the transmit data    
+ * @Return void
+*/
 
 void m4iset_(int16 *pvData, int16 *pvData1, int32 *lMemsize)
     {