Index: firmware/App/Drivers/ConductivityTeensy.c
===================================================================
diff -u -rd305a91c82fe89a76d9accbb8faa3d81e3106341 -r11dbd4210f75d1587be89117e60409cf1b4d1085
--- firmware/App/Drivers/ConductivityTeensy.c	(.../ConductivityTeensy.c)	(revision d305a91c82fe89a76d9accbb8faa3d81e3106341)
+++ firmware/App/Drivers/ConductivityTeensy.c	(.../ConductivityTeensy.c)	(revision 11dbd4210f75d1587be89117e60409cf1b4d1085)
@@ -77,15 +77,14 @@
 static U08 queueRearIndex;                                              ///< Queue rear index.
 static U08 queueFrontIndex;                                             ///< Queue front index.
 static TEENSY_CMD_INDEX_T currentCmd;
-static CONDUCTIVITY_MST_PARAM_IDX_T currentSettingParam = CONDUCTIVITY_MST_PARAM_IDX_SINFREQ;
 
 // Conductivity DMA control records
 static g_dmaCTRL condDMAWriteControlRecord;                             ///< DMA record for controlling a DMA write command transmission from buffer.
 static g_dmaCTRL condDMAWriteRespControlRecord;                         ///< DMA record for controlling a DMA write command reception to buffer.
 
 static CONDUCTIVITY_INIT_STATUS_T conductivityInitStatus;
 static CONDUCTIVITY_UPDATE_EEPROM_STATUS_T condUpdateEEPROMstatus;
-static CONDUCTIVITY_UPDATE_MST_STATUS_T condUpdateSettingStatus[MAX_CONDUCTIVITY_MST_PARAM_IDX];
+static CONDUCTIVITY_UPDATE_MST_STATUS_T condUpdateSettingStatus[MAX_COND_MST_PARAM_IDX];
 static CONDUCTIVITY_SENSOR_DATA_T rawConductivityValues[ MAX_TEENSY_SENSOR ];
 static CONDUCTIVITY_CALCULATED_MEASUREMENTS_T calculatedMeasurement[ MAX_TEENSY_SENSOR ];
 static CONDUCTIVITY_COEFFICIENTS_T conductivityCoeff[MAX_TEENSY_SENSOR];
@@ -105,16 +104,6 @@
     { TEENSY_CMD_GET_SINGLE_MEASUREMENT      , (U08*)"h"   , RX_SIZE_GET_SINGLE_MEASUREMENT      },
 };
 
-static const U08* condSettingsParam = {
-                                        "sinfreq",
-                                        "dacpp",
-                                        "bias",
-                                        "rtia",
-                                        "pga",
-                                        "dftnum",
-                                        "avgnum",
-                                       };
-
 // Conductivity cmd data structs
 TEENSY_SENSOR_INDEX_T currentSelectedSensor;
 CONDUCTIVITY_EEPROM_DATA_T eePromDataTX;
@@ -735,6 +724,9 @@
 
     if ( written > 0 )
     {
+        // Clear the DMA write comand buffer
+        memcpy( &condWriteCmdBuffer, 0, COND_WRITE_CMD_BUFFER_LEN );
+        // Load the DMA write command buffer with contents of TX buffer.
         memcpy( &condWriteCmdBuffer, &condTxBuffer, written );
         success = TRUE;
         condWriteCommandInProgress = TRUE;
Index: firmware/App/Drivers/ConductivityTeensy.h
===================================================================
diff -u -rd305a91c82fe89a76d9accbb8faa3d81e3106341 -r11dbd4210f75d1587be89117e60409cf1b4d1085
--- firmware/App/Drivers/ConductivityTeensy.h	(.../ConductivityTeensy.h)	(revision d305a91c82fe89a76d9accbb8faa3d81e3106341)
+++ firmware/App/Drivers/ConductivityTeensy.h	(.../ConductivityTeensy.h)	(revision 11dbd4210f75d1587be89117e60409cf1b4d1085)
@@ -23,6 +23,7 @@
 // ********** public definitions **********
 #define DOUBLE_COUNT                8                                    ///< Number of double values in Teensy EEPROM data
 #define FLOAT_COUNT                 16                                   ///< Number of float values in Teensy EEPROM data
+#define MAX_COND_MST_PARAM_IDX      7                                    ///< Total number of parameters in measurement settings CONDUCTIVITY_MEASUREMENT_SETTINGS_T
 
 /// Enumeration of conductivity sensors.
 typedef enum ConductivitySensors
@@ -116,19 +117,6 @@
     COND_MST_STATUS_SUCCESS
 }CONDUCTIVITY_UPDATE_MST_STATUS_T;
 
-// Update Measurement Settings Status
-typedef enum mst_param_idx
-{
-    CONDUCTIVITY_MST_PARAM_IDX_SINFREQ = 0,       ///< SinFreq : Frequency of excitation signal
-    CONDUCTIVITY_MST_PARAM_IDX_DACPP,             ///< DacVoltPP : DAC output voltage in mV peak to peak. Maximum value is 800mVpp. Peak to peak voltage
-    CONDUCTIVITY_MST_PARAM_IDX_BIAS,              ///< BiasVolt : The excitation signal is DC+AC. This parameter decides the DC value in mV unit. 0.0mV means no DC bias.
-    CONDUCTIVITY_MST_PARAM_IDX_RTIA,              ///< HstiaRtiaSel : Valid param values ( 0, 1, 2, 3, 4, 5, 6, 7 )
-    CONDUCTIVITY_MST_PARAM_IDX_PGA,               ///< AdcPgaGain : Valid param values ( 1, 1.5, 2, 4, 9 ) i.e interpreted as ( 0, 1, 2, 3, 4 ) respectively in Teensy.
-    CONDUCTIVITY_MST_PARAM_IDX_DFTNUM,            ///< DftNum : DFT number  Valid param values ( 4096, 2048, 1024, 512, 256 ) i.e interpreted as ( 10, 9, 8, 7, 6 ) respectively in Teensy.
-    CONDUCTIVITY_MST_PARAM_IDX_AVGNUM,            ///< ADCAvgNum : Valid param values ( 2, 4, 8, 16 )i.e interpreted as ( 0, 1, 2, 3 ) respectively in Teensy.
-    MAX_CONDUCTIVITY_MST_PARAM_IDX                ///< Total number of Measurement settings parameters
-}CONDUCTIVITY_MST_PARAM_IDX_T;
-
 typedef struct
 {
     F64 A0;