Hi,
I used the AWR1843 and mmWave Studio 02.01.01.00 to enable the 3 Tx operation, but I found that theTX2 button in mmWave studio cannot be chosen as shown below. Can you tell me how to enable the 3 Tx simultaneously on AWR1843? Does it need any hardware modification?

Here is the log information:
GM: Constructor
GM: Thu Apr 08 21:42:54 2021
RSTD.Transmit("/Settings")
[21:42:55]
[21:42:55] ### Running Startup script: "D:\ti\mmwave_studio_02_01_01_00\mmWaveStudio\Scripts\Startup.lua" ###
[21:42:55] RSTD.SetAndTransmit ("/Settings/Scripter/Display DateTime" , "1")
[21:42:55] RSTD.SetAndTransmit ("/Settings/Scripter/DateTime Format" , "HH:mm:ss")
[21:42:55] Scripter ignored: Attempt to UnBuild() again or before Build.
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 0/Dll" , "D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\Clients\\\\LabClient.dll")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 0/Use" , "TRUE")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 1/Use" , "FALSE")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 2/Use" , "FALSE")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 3/Use" , "FALSE")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 4/Use" , "FALSE")
[21:42:55] RSTD.SetVar ("/Settings/AL Client/AL Dll" , "D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\RunTime\\SAL.dll")
[21:42:55] RSTD.SetVar ("/Settings/Clients/Client 0/GuiDll" , "")
[21:42:55] RSTD.SetVar ("/Settings/AutoUpdate/Enabled" , "TRUE")
[21:42:55] RSTD.SetVar ("/Settings/AutoUpdate/Interval" , "1")
[21:42:55] RSTD.SetVar ("/Settings/Monitors/UpdateDisplay" , "TRUE")
[21:42:55] RSTD.SetVar ("/Settings/Monitors/OneClickStart" , "TRUE")
[21:42:55] RSTD.SetVar ("/Settings/Automation/Automation Mode" , "false")
[21:42:55] RSTD.Transmit("/")
[21:42:55] RSTD.SaveSettings(): Settings saved to "C:\Users\Achaos\AppData\Roaming\RSTD\config.xml"
[21:42:55] RSTD.Build()
[21:42:55] RSTD.SaveSettings(): Settings saved to "C:\Users\Achaos\AppData\Roaming\RSTD\config.xml"
[21:42:55] RSTD.Transmit("/")
[21:42:55] RSTD.AL_Build()
[21:42:55] RSTD.AL_LoadXml()
[21:42:55] RSTD.Transmit("/")
[21:42:55] RSTD.AL_Init()
[21:42:55] RSTD.Clients_Build()
[21:42:55] GM: Init
[21:42:55] GM: Loaded 'D:\ti\mmwave_studio_02_01_01_00\mmWaveStudio\Clients\\LabClient.dll'
[21:42:55] GM: 1 Guest (s) init
[21:42:55] GM: 1 Module(s) init
[21:42:55] GM: 2 Tab (s) init
[21:42:55] RSTD.Client_LoadXml()
[21:42:55] [RadarAPI]: ar1.selectRadarMode(0)
[21:42:55] [RadarAPI]: Status: Passed
[21:42:55] Matlab Runtime Engine is installed
[21:42:55] [RadarAPI]: Starting Matlab Engine..
[21:42:58] [RadarAPI]: Matlab Engine Started!
[21:42:59] [RadarAPI]: ar1.selectCascadeMode(0)
[21:42:59] [RadarAPI]: Status: Passed
[21:42:59] [RadarAPI]: ar1.LoadSettings('C:\Users\Achaos\AppData\Roaming\RSTD\ar1gui.ini')
[21:43:00] TESTING = false
[21:43:00] RstdNet: Port 2777: Listening..
[21:43:00]
[21:43:00] ***Script completed successfully.***
[21:43:12]
[21:43:12] &&&&&&&&&&&&&&&&&&&&
[21:43:12] ***Script FAILED!***
[21:43:12] &&&&&&&&&&&&&&&&&&&&
[21:43:12] Exception message is:
[21:43:12] [RadarAPI]: Error: ReadRegister: 未将对象引用设置到对象的实例。
[21:43:12] Trace:
[21:43:12] 在 AR1xController.SerialPortWrapper.SendAndRead(String command, String& response, Int32 timeout)
[21:43:12] 在 AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32& val)
[21:43:12] 在 AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32 start_bit, UInt32 end_bit)
[21:43:12] 在 AR1xController.AR1xxxWrapper.ReadRegister(Int32 type, UInt32 address, Int32 start_bit, Int32 end_bit, UInt32& value)
[21:43:57]
[21:43:57] &&&&&&&&&&&&&&&&&&&&
[21:43:57] ***Script FAILED!***
[21:43:57] &&&&&&&&&&&&&&&&&&&&
[21:43:57] Exception message is:
[21:43:57] [RadarAPI]: Error: ReadRegister: 未将对象引用设置到对象的实例。
[21:43:57] Trace:
[21:43:57] 在 AR1xController.SerialPortWrapper.SendAndRead(String command, String& response, Int32 timeout)
[21:43:57] 在 AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32& val)
[21:43:57] 在 AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32 start_bit, UInt32 end_bit)
[21:43:57] 在 AR1xController.AR1xxxWrapper.ReadRegister(Int32 type, UInt32 address, Int32 start_bit, Int32 end_bit, UInt32& value)
[21:44:21] [RadarAPI]: Opening Gpio Control Port()
[21:44:21] [RadarAPI]: Status: Passed
[21:44:22] [RadarAPI]: Opening Board Control Port()
[21:44:22] [RadarAPI]: Status: Passed
[21:44:23] [RadarAPI]: ar1.FullReset()
[21:44:23] [RadarAPI]: Status: Passed
[21:44:23] [RadarAPI]: Closing Board Control Port()
[21:44:23] [RadarAPI]: Status: Passed
[21:44:23] [RadarAPI]: Closing Gpio Control Port()
[21:44:23] [RadarAPI]: Status: Passed
[21:44:23] [RadarAPI]: ar1.SOPControl(2)
[21:44:23] [RadarAPI]: Status: Passed
[21:44:24] [RadarAPI]: ar1.Connect(34,921600,1000)
[21:44:27] [RadarAPI]: Warning: Connected with baudrate 115200
[21:44:28] [RadarAPI]: Warning: Disconnected existing BaudRate
[21:44:28] [RadarAPI]: Warning: Trying to connect with baudrate 921600
[21:44:30] [RadarAPI]: ar1.Calling_IsConnected()
[21:44:31] [RadarAPI]: ar1.SelectChipVersion("AR1642")
[21:44:31] [RadarAPI]: Status: Passed
[21:44:31] [RadarAPI]: ar1.SelectChipVersion("AR1642")
[21:44:31] [RadarAPI]: Status: Passed
[21:44:31] [RadarAPI]: ar1.deviceVariantSelection("XWR1843")
[21:44:31] [RadarAPI]: Status: Passed
[21:44:31] [RadarAPI]: ar1.frequencyBandSelection("77G")
[21:44:31] [RadarAPI]: ar1.SelectChipVersion("XWR1843")
[21:44:31] [RadarAPI]: Status: Passed
[21:44:31] Device Status : XWR1843/ASIL-B/SOP:2/ES:2
[21:44:31] [RadarAPI]: ar1.SaveSettings('C:\Users\Achaos\AppData\Roaming\RSTD\ar1gui.ini')
[21:44:34] [RadarAPI]: ar1.ReadRegister(0xffffe214, 0, 31)
[21:44:34] [RadarAPI]: ar1.ReadRegister(0xffffe210, 0, 31)
[21:44:34] [RadarAPI]: ar1.ReadRegister(0xffffe218, 0, 31)
[21:44:34] [RadarAPI]: ar1.DownloadBSSFw("D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\Scripts\\..\\..\\rf_eval_firmware\\radarss\\xwr18xx_radarss.bin")
[21:44:34] [RadarAPI]: Downloading BSS Patch RPRC Binary..
[21:44:36] [RadarAPI]: ar1.GetBSSFwVersion()
[21:44:36] [RadarAPI]: BSSFwVersion:(02.00.00.01 (05/10/17))
[21:44:37] [RadarAPI]: ar1.GetBSSPatchFwVersion()
[21:44:37] [RadarAPI]: BSSPatchFwVersion:(01.02.05.02 (30/04/19))
[21:44:37] BSS FW Download Success
[21:44:37] [RadarAPI]: ar1.DownloadMSSFw("D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\Scripts\\..\\..\\rf_eval_firmware\\masterss\\xwr18xx_masterss.bin")
[21:44:37] [RadarAPI]: Downloading MSS RPRC Binary..
[21:44:39] [RadarAPI]: ar1.GetMSSFwVersion()
[21:44:39] [RadarAPI]: MSSFwVersion:(01.02.05.02 (16/07/19))
[21:44:39] MSS FW Download Success
[21:44:40] [RadarAPI]: ar1.PowerOn(0, 1000, 0, 0)
[21:44:40] [RadarAPI]: Status: Passed
[21:44:40] MSS power up done async event received!
[21:44:40] Power On Success
[21:44:41] [RadarAPI]: ar1.SelectChipVersion("AR1642")
[21:44:41] [RadarAPI]: Status: Passed
[21:44:41] [RadarAPI]: ar1.SelectChipVersion("XWR1843")
[21:44:41] [RadarAPI]: Status: Passed
[21:44:41] Device Status : XWR1843/ASIL-B/SOP:2/ES:2
[21:44:41] [RadarAPI]: ar1.RfEnable()
[21:44:41] [RadarAPI]: Status: Passed
[21:44:41] BSS power up done async event received!
[21:44:41] [RadarAPI]: ar1.GetMSSFwVersion()
[21:44:41] [RadarAPI]: MSSFwVersion:(01.02.05.02 (16/07/19))
[21:44:42] [RadarAPI]: ar1.GetBSSFwVersion()
[21:44:42] [RadarAPI]: BSSFwVersion:(02.00.00.01 (05/10/17))
[21:44:43] [RadarAPI]: ar1.GetBSSPatchFwVersion()
[21:44:43] [RadarAPI]: BSSPatchFwVersion:(01.02.05.02 (30/04/19))
[21:44:43] RF Enable Success
[21:44:43] [RadarAPI]: ar1.ChanNAdcConfig(1, 1, 0, 1, 1, 1, 1, 2, 1, 0)
[21:44:43] [RadarAPI]: Status: Passed
[21:44:43] ChanNAdcConfig Success
[21:44:43] [RadarAPI]: ar1.LPModConfig(0, 0)
[21:44:43] [RadarAPI]: Status: Passed
[21:44:43] Regualar mode Cfg Success
[21:44:43] [RadarAPI]: ar1.RfInit()
[21:44:43] RF Init async event received!
[21:44:43] [RadarAPI]: Time stamp, Temperture: 2312,35; APLL Status, Update: 1, 0; SynthVCO1 Status, Update: 1, 1; SynthVCO2 Status, Update: 1, 1; LODist Status, Update: 1, 1; RxADCDC Status, Update: 1, 1; HPFcutoff Status, Update: 1, 1; LPFcutoff Status, Update: 1, 1; PeakDetector Status, Update: 1, 1; TxPower Status, Update: 1, 1; RxGain Status, Update: 1, 1; TxPhase Status, Update: 1, 1; RxIQMM Status, Update: 1, 1;
[21:44:43] [RadarAPI]: Status: Passed
[21:44:43] RfInit Success
[21:44:44] [RadarAPI]: ar1.DataPathConfig(1, 1, 0)
[21:44:44] [RadarAPI]: Status: Passed
[21:44:44] DataPathConfig Success
[21:44:44] [RadarAPI]: ar1.LvdsClkConfig(1, 1)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] LvdsClkConfig Success
[21:44:45] [RadarAPI]: ar1.LVDSLaneConfig(0, 1, 1, 0, 0, 1, 0, 0)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] LVDSLaneConfig Success
[21:44:45] [RadarAPI]: ar1.SetTestSource(4, 3, 0, 0, 0, 0, -327, 0, -327, 327, 327, 327, -2.5, 327, 327, 0, 0, 0, 0, -327, 0, -327, 327, 327, 327, -95, 0, 0, 0.5, 0, 1, 0, 1.5, 0, 0, 0, 0, 0, 0, 0)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] Test Source Configuration Success
[21:44:45] [RadarAPI]: ar1.ProfileConfig(0, 77, 100, 6, 60, 0, 0, 0, 0, 0, 0, 29.982, 0, 256, 5000, 0, 0, 30)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] ProfileConfig Success
[21:44:45] [RadarAPI]: ar1.ChirpConfig(0, 0, 0, 0, 0, 0, 0, 1, 1, 0)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] ChirpConfig Success
[21:44:45] [RadarAPI]: ar1.EnableTestSource(1)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] Enabling Test Source Success
[21:44:45] Test Source Already Enabled...!!!
[21:44:45] [RadarAPI]: ar1.EnableTestSource(1)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] [RadarAPI]: ar1.FrameConfig(0, 0, 8, 128, 40, 0, 0, 1)
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] FrameConfig Success
[21:44:45] [RadarAPI]: ar1.SelectCaptureDevice("DCA1000")
[21:44:45] [RadarAPI]: Status: Passed
[21:44:45] SelectCaptureDevice Success
[21:44:45] [RadarAPI]: ar1.CaptureCardConfig_EthInit("192.168.33.30", "192.168.33.180", "c:22:38:4e:5a:c", 4096, 4098)
[21:44:46] [RadarAPI]: Sending fpga command to DCA1000
[21:44:46] [RadarAPI]:
[21:44:46] FPGA Configuration command : Success
[21:44:46] [RadarAPI]: Sending fpga_version command to DCA1000
[21:44:46] [RadarAPI]:
[21:44:46]
[21:44:46] FPGA Version : 2.8 [Record]
[21:44:46]
[21:44:46] CaptureCardConfig_EthInit Success
[21:44:46] [RadarAPI]: ar1.CaptureCardConfig_Mode(1, 2, 1, 2, 3, 0)
[21:44:46] [RadarAPI]: Sending fpga command to DCA1000
[21:44:46] [RadarAPI]:
[21:44:46] FPGA Configuration command : Success
[21:44:46] CaptureCardConfig_Mode Success
[21:44:46] [RadarAPI]: ar1.CaptureCardConfig_PacketDelay(25)
[21:44:46] [RadarAPI]: Sending fpga command to DCA1000
[21:44:46] [RadarAPI]:
[21:44:46] FPGA Configuration command : Success
[21:44:46] [RadarAPI]: Sending record command to DCA1000
[21:44:46] [RadarAPI]:
[21:44:46] Configure Record command : Success
[21:44:46] CaptureCardConfig_PacketDelay Success
[21:44:46] [RadarAPI]: ar1.CaptureCardConfig_StartRecord("D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\Scripts\\..\\PostProc\\adc_data.bin", 1)
[21:44:46] [RadarAPI]: Sending start_record command to DCA1000
[21:44:46] [RadarAPI]: Status: Passed
[21:44:48] [RadarAPI]: ar1.StartFrame()
[21:44:48] [RadarAPI]: Status: Passed
[21:44:48] Frame start async event received!
[21:44:48] [RadarAPI]: Frame Ended
[21:44:48] Frame End async event received!
[21:44:56] Please wait for a few seconds for matlab post processing .....!!!!
[21:44:56] [RadarAPI]: ar1.StartMatlabPostProc("D:\\ti\\mmwave_studio_02_01_01_00\\mmWaveStudio\\Scripts\\..\\PostProc\\adc_data.bin")
[21:44:56] [RadarAPI]: No of files Captured: 1, Total no of frames for each device : 8
[21:45:06]
[21:45:06] ***Script completed successfully.***