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 7630b1756..9dbd343c6 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
@@ -933,10 +933,15 @@ static void EliteNotifyControl(){
          |    header     |
          |    current                                                    |
          | voltage or impedance                                          |
-         | ADC gain level|
+         |  mode & gain  |
          |    time stamp                                                 |
          |  cycle number |
 
+
+    mode & gain
+        this byte include Elite working mode and ADC gain level
+        we use "(mode & 0xF0) | (gain & 0x0F)" to encode these two information
+
      cycle number
          for cyclic voltammetry use, we save it as channel number.
          0xFF
@@ -961,7 +966,7 @@ static void SendNotify(){
         }
     }
 
-    not_buf[9] = ADCGainLevel;
+    not_buf[9] = (INSTRUCTION.eliteFxn & 0xF0) | (ADCGainLevel & 0x0F);
 
     // 1 Timestamp = 32 usec;  31 Timestamp ~= 1 msec
     not_time_stamp = (Timestamp_get32())/31;   // msec