diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteDAC.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteDAC.h
index 2c7b9349f..75ce90395 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteDAC.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteDAC.h
@@ -85,7 +85,7 @@ static int32_t DAC_to_realV(uint16_t DACcode)
     volt_32 = DACcode;
 //    RealV = (volt_32 - offset) / coeff;
     RealV = (-1896) * volt_32 + offset;
-    RealV = RealV / 10e4; //(mV)
+    RealV = RealV / 10e3; //(mV)
 
     return RealV;
 }
diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
index d4976a9ed..ff80c1e47 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
@@ -945,18 +945,21 @@ static void SendNotify(){
     SimpleProfile_SetParameter(BLE_DAT_BUFF_CHAR, BLE_DAT_BUFF_SIZE, not_buf);
 }
 
-//         "va": "(VOLT_ORIGIN + 1) * 0x0010",
-//           "vb": "(VOLT_FINAL + 1) * 0x0010",
-//
+// Old DAC output form
+//  Vorigin & Vfinal range : 0~49
+// "va": "(VOLT_ORIGIN + 1) * 0x0010",
+// "vb": "(VOLT_FINAL + 1) * 0x0010",
 static uint16_t OldDAC2UserCode(uint16_t OldDAC){
     uint16_t UserCode = 0;
     UserCode = (OldDAC / 0x0010) *1000;
     return UserCode;
 }
 
+// Old step output form
+// VOLT_STEP * 0x40
 static uint8_t OldStep2NewStep(uint8_t OldStep){
     uint8_t NewStep = 0;
-    NewStep = (OldStep / 0x12) *  0x9E;
+    NewStep = (OldStep / 0x40) *  0x9E;
     return NewStep;
 }
 
@@ -965,13 +968,17 @@ static uint8_t OldStep2NewStepTime(uint8_t StepTime){
         case 0:{
             return 0x02;
         }
-        case 1:{
+        case 0x12:{
             return 0x05;
         }
-        case 2:{
+
+        // 0x12 * 2 =
+        case 0x24 :{
             return 0x06;
         }
-        case 3:{
+
+        // 0x12 *3
+        case 0x36 :{
             return 0x09;
         }
         default:{