Index: dialin/hd/syringe_pump.py
===================================================================
diff -u -r88b4967ce6b9ac816ac21b26326450de4b540887 -r29168c65fe2c44f983d6a4a8303bbd60be052671
--- dialin/hd/syringe_pump.py	(.../syringe_pump.py)	(revision 88b4967ce6b9ac816ac21b26326450de4b540887)
+++ dialin/hd/syringe_pump.py	(.../syringe_pump.py)	(revision 29168c65fe2c44f983d6a4a8303bbd60be052671)
@@ -713,32 +713,27 @@
             self.logger.debug("Timeout!!!!")
             return False
 
-    def cmd_set_syringe_pump_dac_ref_voltage(self, dac_v_ref: float = 0.15) -> int:
+    def cmd_set_syringe_pump_dac_ref_voltage(self) -> int:
         """
-        Constructs and sends the set syringe pump DAC pressure sensor reference voltag command
+        Constructs and sends the set syringe pump DAC vRef. The value the DAC is set to is within HD Calibration Record.
         Constraints:
             Must be logged into HD.
 
-        @param dac_v_ref:  float - status (0.0..3.3)
         @return: 1 if successful, zero otherwise
         """
 
-        payload = float_to_bytearray(dac_v_ref)
-
         message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
                                               message_id=MsgIds.MSG_ID_HD_SYRINGE_PUMP_FORCE_SENSOR_DAC_CALIBRATE.value,
-                                              payload=payload)
+                                              )
 
-        self.logger.debug("set HD syringe pump DAC reference voltage")
+        self.logger.debug("Set HD syringe pump DAC reference voltage")
 
         # Send message
         received_message = self.can_interface.send(message)
 
         # If there is content...
         if received_message is not None:
-            str_res = str(dac_v_ref)
-            self.logger.debug("Syringe pump DAC reference voltage set to " + str_res + "V.  " +
-                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            self.logger.debug("Syringe pump DAC reference voltage set.")
             # response payload is OK or not OK
             return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         else: