https://e2e.ti.com/administrators1/ultrasonic1/Welcome to the Ultrasonic Sensing section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "+New"en-USTelligent Community 13https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1668076/msp430fr6045-specifications-for-ultrasonic-sensors-used-in-ultrasonic-water-meters-based-on-the-msp430fr6045/6451822Mon, 17 Aug 2026 00:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:24d4a131-4961-4769-b684-87c68e2346ceKenichi MaruyamaHello, Peter Jiang, Thank you for your reply. I’ll use the information you provided to help me select a sensor.https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1672447/tx08devm-linamp-not-outputting-signal-on-tx/6447819Wed, 12 Aug 2026 04:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f7499282-c5cd-4a4a-9cda-2aa9094f306bRoshan DivakarHello, that is expected as the latency to fetch the data from memory in Lin-Amp mode is longer than that of pulser. The latency details are mentioned in the datasheet which you can refer to.https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1668076/msp430fr6045-specifications-for-ultrasonic-sensors-used-in-ultrasonic-water-meters-based-on-the-msp430fr6045/6447783Wed, 12 Aug 2026 03:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:79e4305b-92b9-41f7-870a-748e3d101bb1Peter JiangHi Kenichi, Sorry for the late reply since it might be some system issues that cause us missing this thread. Based on the mass‑production experience together with our customers, we have included the transducer recommendations in the document FAQ on ultrasonic sensing technology (as shown below), Audiowell and Jiakang transducers are common, recommended choices and typically pair well with MSP430FR604x devices , the links in the document may not work but you can use the links provided below to view the recommended models. These models might be a bit outdated and of course, other new transducers from these recommended manufacturers with similar specifications can also be used. JIAKANG 1MHz PSC1.0M020160H2AD0-B0 Audiowell Model：HS0003 Thanks Best Regards, Peterhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1672447/tx08devm-linamp-not-outputting-signal-on-tx/6447470Tue, 11 Aug 2026 21:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bcd7a684-0721-4576-af6e-2abb3912b5cdAndrew OuelletteIt appears the delay in the Linamp pulse relative to the trigger signal is significantly longer than in the regular HV pulsar.https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1672447/tx08devm-linamp-not-outputting-signal-on-txTue, 11 Aug 2026 19:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e764921e-ce99-4817-ab3b-a8bd2b9d98c1Andrew OuellettePart Number: TX08DEVM I've got the board setup as per the manual and can see an output on the HV Pulsar_Pat but nothing seems to be working in terms of the Lin_Amp_Pat section of the demo code. Not sure if some enable box is missing somewhere along the setup process but I've tried most of the settings and have had no luck. All board diagnostics seem to be working.Industrial AutomationTX08DEVMhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1671629/msp430fr6043-design-review-ultrasonic-water-meter-using-msp430fr6043Fri, 07 Aug 2026 21:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c3471f70-66ec-4ca1-8b61-0cacc19bb117Ezra MohammedPart Number: MSP430FR6043 Hi everyone, We are currently working on a Smart Ultrasonic Water Meter using the TI MSP430FR6043 controller. Previously, we designed a two-layer board, but it barely functioned due to excessive noise. We have since redesigned both the PCB and the schematics. I would appreciate it if you could review our work and provide your feedback. Smart Ultrasonic Water meter.pdf TOP Layer SIgnal 2. Layer 2: GND 3: Layer 3: PWR + GND Buttom Layer : GND i splt the USS_GND and the GND and connect them by Net Tie Thank you! Ezra M.msp430fr6043Wearables (non-medical)https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1670566/tmux9832-tmux9832-datasheet-requestWed, 05 Aug 2026 08:21:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0a51c6e9-fb8b-452f-a73c-682e797ed196Joshua M'CawPart Number: TMUX9832 Hi there, I am looking to get access to the datasheet for the TMUX9832 chip. I submitted a request through the secure resources portal over a week ago, but have not heard anything back. Can anyone from TI help with this request?TMUX9832https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1670137/msp430fr5043-the-transient-abrupt-changeTue, 04 Aug 2026 08:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c9806cb8-813e-4a78-a4da-5c9167b7df28TommyPart Number: MSP430FR5043 Hi E2E, We measured the following data in the fluid laboratory: What are some possible reasons for this data representation? What should we do? BRMSP430FR5043Test & Measurementhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1668423/afe7960evm-doc-cert-require-python-script-bsocket-pyTue, 28 Jul 2026 22:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3cbc0ed7-d0ee-4fe1-981d-05d920181e0eRussell PetherickPart Number: AFE7960EVM-DOC-CERT Other Parts Discussed in Thread: TX7516EVM Hi. I have the TX7516EVM kit and as part of my evaluation I need to control the Latte GUI from Matlab. TI provides a python script to facilitate connection to the Latte server called 'bSocket.py' (see SBAA397) can you please make this script available to me or provide documentation for the transmit header format so that I can implete my own script. Thank youTX7516EVMAFE7960EVM-DOC-CERThttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1668076/msp430fr6045-specifications-for-ultrasonic-sensors-used-in-ultrasonic-water-meters-based-on-the-msp430fr6045Tue, 28 Jul 2026 06:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1bd3e2d7-1b89-432a-afaa-40ffc7408018Kenichi MaruyamaPart Number: MSP430FR6045 Dear Sir or Madam, I am currently considering the development of an ultrasonic water meter using the MSP430FR6045 . Could you please advise on the recommended ultrasonic sensor specifications required to achieve appropriate measurement performance when using the Ultrasonic Sensing Solution (USS) in the MSP430FR6045 for transit-time flow measurement? In particular, I would appreciate any recommended values or acceptable ranges for the following parameters. Information Requested 1. Recommended Center Frequency Typical frequencies such as 1 MHz, 2 MHz, 4 MHz, etc. Frequency ranges generally recommended for water meter applications 2. Sensor Capacitance Recommended capacitance range Capacitance range that can be supported by the USS circuitry 3. Electrical Characteristics Impedance Resonant frequency Q factor Recommended transmit voltage 4. Time Response Characteristics Ring-down time (residual vibration decay time) Impact on TOF (Time-of-Flight) measurement accuracy Recommended values or limits 5. Sensor Configuration Single-element transducer for both transmit and receive functions Separate transmit and receive transducers Recommended configuration 6. Experience in Water Meter Applications Recommended sensor manufacturers Recommended sensor part numbers Sensors used in reference designs or evaluation platforms 7. Pipe Material Considerations Any differences in recommended sensor specifications for metal and plastic pipe designs Background We are evaluating a transit-time ultrasonic flow measurement system based on the MSP430FR6045 USS. As part of our sensor selection process, we would like to understand the recommended transducer specifications from the microcontroller/system perspective. If available, we would also appreciate information regarding sensor manufacturers and part numbers that have been successfully evaluated or used in similar applications. Thank you for your support. We look forward to your guidance. Best regards, [Your Name] [Company Name] [Contact Information] This wording is professional and is designed to encourage responses such as: Recommended operating frequency (e.g., 1 MHz preferred ) Acceptable transducer capacitance range (e.g., 1–2 nF ) Maximum recommended ring-down time Recommended or validated sensor manufacturers and part numbers (e.g., TDK, Prowave, Audiowell , etc.) Sensors used in TI reference designs or customer applications. In particular, we would appreciate it if you could recommend any ultrasonic sensors from Japanese manufacturers that are suitable for use with the MSP430FR6045. In addition, if reference test data, expected performance metrics, or acceptance criteria are available for sensor and evaluation board combinations, please share them with us. Such information would be very helpful in establishing our evaluation and validation process.MSP430FR6045https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1654749/tmux9832-tmux9832-abnormal-output-signal-observed-on-specific-channel/6389101Fri, 19 Jun 2026 15:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ca10f069-a17e-4907-afa0-fc2e797396ffNir GilgurHello Sunmi, I apologize for the late response, E2E tends to be buggy sometimes and some posts don't appear on my side. Can you specify which channels you are seeing these abnormal signals? Is the top picture shows a good signal and the bottom one a bad one? Is there any difference in loadings between the channels? Is there a schematic you can share? Can you also share waveforms of input vs output both for the "good" and "bad" channels? Thanks, Nirhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1650804/pga460-q1-pga460-q1-boostxl-circuit-not-getting-echo/6383333Mon, 15 Jun 2026 20:52:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f2ce4079-5259-42ba-bd23-c5d45d414480Alicia RosenbergerHi Jaya, Thank you for posting to the Sensors forum! I am so sorry for missing this thread, I am not sure why I wasn't able to find it until now. But I saw your newer thread on this same topic and went ahead and replied to the newer thread. I will go ahead and close this thread and we can continue the conversation on this topic there. PGA460-Q1: Not getting echo Best, ~Aliciahttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1654749/tmux9832-tmux9832-abnormal-output-signal-observed-on-specific-channelFri, 12 Jun 2026 01:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3d4025f8-6119-43d7-91b8-e8178de9cd24sunmi yeoPart Number: TMUX9832 Dear TI Support Team, We are currently using the TMUX9832 (QFN package) in an ultrasound system and have observed abnormal output waveforms on some channels. The input signal is normal, but the output signal from the TMUX9832 appears distorted on certain devices/channels. We would appreciate your support in understanding the possible causes and recommended diagnostic tests before replacing or decapping t he device.Medical & healthcareTMUX9832https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1651129/msp430fr5043-power-supply-and-consumption-questions-for-msp430fr5043/6376804Wed, 10 Jun 2026 03:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2bf02b56-3a8c-4819-b8ee-732ee44a4d3dPeter JiangHi Anthony, [quote userid="571160" url="~/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1651129/msp430fr5043-power-supply-and-consumption-questions-for-msp430fr5043"]ince the supply pins are recommended to be connected together, doesn't that mean that the DVCC and AVCC supply should also be 2.2 to 3.6 V?[/quote] 1. Yes, I think your understanding is correct, if connected together, it will also limit the DVCC and AVCC within the 2.2V to 3.6V. However, from another perspective, I think the reason why datasheet indicate two different range is that it wants to emphasize the different requirements between DVCC/AVCC and PVCC, since PVCC is specifically designed for USS modules, it has stricter requirements for the range of power supply variations, especially in some battery-powered scenarios application we should pay more attention to it. Therefore, the datasheet lists the actual spec of different type of power supply, however, for practical applications and to avoid erroneous writes to RAM and FRAM due to excessive differences between DVCC/AVCC and PVCC, we recommend connecting them together, this is a common and good practice. [quote userid="571160" url="~/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1651129/msp430fr5043-power-supply-and-consumption-questions-for-msp430fr5043"]Are we missing something or is the MSP430FR5043 intended to be powered from 3.0 V to achieve the lower power consumption?[/quote] 2. Have you tried reducing your system's supply voltage down to 3.0V or 2.2V to measure the power consumption? Does the power consumption performance match the datasheet? If not, I would suspect that there is more likely you have missed something with the low power measurement condition settings, because commonly under the same configuration, the power consumption performance at 3.3V and 3V should not differ significantly. Based on the testing result provided in the datasheet as shown below, it can be seen that the power consumption between 2.2 and 3.3V should remain in the similar level. [quote userid="571160" url="~/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1651129/msp430fr5043-power-supply-and-consumption-questions-for-msp430fr5043"]are the use of ferrite beads a good idea since they will add impedance to the supply line? [/quote] 3. I think your doubt is reasonable for the ferrite will increase the impendence, however, I believe that the designers of the EVM should also consider this point, and when using ferrite beads to isolate noise, they placed enough decoupling capacitors like C24,C23,C3,C4 to compensate for the high impedance introduced by the ferrite beads. Therefore, I think when testing under actual load conditions, as long as the voltage ripple and transient response on the power rail meet the required standards, this design can be adopted. Of course, you can also make adjustments based on your own design to ensure that it meets your actual requirements. Best Regards, Peterhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1651129/msp430fr5043-power-supply-and-consumption-questions-for-msp430fr5043Mon, 01 Jun 2026 14:01:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:31f0b531-a8a7-4e9a-8bec-b6af01fac8bcAnthony DavidsonPart Number: MSP430FR5043 Other Parts Discussed in Thread: EVM430-FR6047 We are working on an ultrasonic water flow design based on the MSP430FR503. First, there seems to be some weirdness with the recommended operating conditions for the power rails. The datasheet recommends that the power supply pins be powered from the same source, that is, AVCC, DVCC, and PVCC should all be connected together. However, the supply range in Table 8.3 on page 30 says the recommended range for DVCC and AVCC is 1.8 to 3.6 V and the range for PVCC is 2.2 to 3.6 V. Since the supply pins are recommended to be connected together, doesn't that mean that the DVCC and AVCC supply should also be 2.2 to 3.6 V? Next, all the power consumption data shown in the datasheet from page 31 to 35 are at a VCC equal to 2.2 V or 3.0 V. We are powering the chip at 3.3 V and not able to achieve power consumptions close to that shown in the datasheet. Are we missing something or is the MSP430FR5043 intended to be powered from 3.0 V to achieve the lower power consumption? Next, the datasheet discusses appropriate decoupling for the power supply pins in Note 5 in Table 8.3. The datasheet does not make any recommendations for using ferrite beads to filter the power supply lines. However, the schematic for the evaluation board EVM430-FR6047 shows a ferrite bead being used to filter both AVCC and PVCC. Since the datasheet recommends 22 uF caps as close as possible to the PVCC supply pins, that suggests that the PVCC pins will draw relatively high pulsed current so my question is are the use of ferrite beads a good idea since they will add impedance to the supply line?building automationEVM430-FR6047MSP430FR5043https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1650804/pga460-q1-pga460-q1-boostxl-circuit-not-getting-echoSun, 31 May 2026 09:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fe4129c9-ae79-41af-981e-228a8d8b0489Jaya ShreePart Number: PGA460-Q1 Other Parts Discussed in Thread: PGA460 Hello TI Support Team, I am currently working with the PGA460-BOOSTXL EVM along with the transducer daughterboard. I have carefully followed the step-by-step instructions provided in the official TI setup video, but I am unable to receive any echo signal in the GUI. Here are the details of my setup: Hardware: PGA460-BOOSTXL Evaluation Module with the included Transducer Daughterboard. Software: PGA460 EVM GUI. Problem: The device does not register or display any echo data during a burst/listen command. I have attached a screenshot of my GUI window showing my current register settings, thresholds, and the blank echo data plot for reference. Could you please help me troubleshoot why the echo is missing? Let me know if you need me to verify specific jumper configurations, register values, or supply voltages.Portable ElectronicsPGA460PGA460-Q1https://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1642749/evm430-fr6043-unable-to-communicate/6358743Tue, 26 May 2026 14:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:64ab1c49-32f2-426b-9d84-37a3c5fdd85dPeter JiangHi Kevin, "Waiting for device" is commonly caused by the following reasons: 1. Incorrect firmware, incompatibility with the GUI. Please make sure you have already flashed the device with the correct version of firmware before connecting to the GUI. 2. Incorrect Java version, please use the Java 8 , instead of any other higher version. So, could you please provide below information: 1. What version of firmware/project and GUI you are currently using ? You can refer to the MSP-ULTRASONIC-DESIGN-CENTER to download the latest demo project and corresponding version GUI. 2. Please open the GUI and check the Java version in the “Help” -> “About” -> “System Information” as shown below . If you find that it's not the Java 8, please firstly uninstall the current Java version on your PC, then try to download and install the Java 8 in the below link https://www.java.com/en/download/ , after installing the Java 8, please perform a PC restart and then try to connect the GUI again. Best Regards, Peterhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1646189/evm430-fr6043-unable-to-set-ups0-to-ups1-gap-below-20-ms-in-uss-gui-gas-modeFri, 15 May 2026 06:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0468fcab-3430-4575-9c76-6336d3c7cb89Nilotpal BaruahPart Number: EVM430-FR6043 Other Parts Discussed in Thread: MSP430FR6043 Board: EVM430-FR6043 GUI Version: USS_02_30_00_03 Application Mode: Gas Mode Issue Description: While optimizing the ultrasonic gas flow meter configuration for higher measurement rates (~100 Hz), I attempted to reduce the “UPS0 to UPS1 Gap” parameter below 10 ms. However, the USS GUI does not allow values lower than 20 ms to be entered or applied. Current Observation: GUI restricts UPS0 to UPS1 Gap to ≥ 20 ms Lower values cannot be typed or requested through “Request Update” Timing diagram updates accordingly and prevents further reduction Current Configuration: Number of Pulses: 24 Search Range: 20 Signal Sampling Frequency: 1000 kHz Capture Duration: 300 µs Algorithm: Hilbert Wide User Param #8: 384 Transducers: 200 kHz gas ultrasonic transducers Objective: Targeting approximately 100 Hz measurement rate for high-speed gas flow measurement experiments. Questions: Is there a firmware-level or GUI-level limitation preventing UPS0→UPS1 Gap below 10 ms? Can this parameter be modified directly in source code or header configuration? Is the limitation related to: USS processing time, transducer ringdown, GUI validation, or MSP430FR6043 hardware timing constraints? What is the minimum achievable stable UPS0→UPS1 Gap for gas mode on EVM430-FR6043? Additional Notes: The ADC waveform is stable and frequency sweep optimization is currently in progress. The goal is to experimentally evaluate higher acquisition rates while maintaining acceptable DToF stability.EVM430-FR6043msp430fr6043Test & Measurementhttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1645887/evm430-fr6043-unable-to-set-ups0-to-ups1-gap-below-10-ms-in-uss-gui-gas-modeThu, 14 May 2026 11:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:26757760-bd32-45d0-86ab-44263f5e6abeNilotpal BaruahPart Number: EVM430-FR6043 Other Parts Discussed in Thread: MSP430FR6043 Board: EVM430-FR6043 GUI Version: USS_02_30_00_03 Application Mode: Gas Mode Issue Description: While optimizing the ultrasonic gas flow meter configuration for higher measurement rates (~100 Hz), I attempted to reduce the “UPS0 to UPS1 Gap” parameter below 10 ms. However, the USS GUI does not allow values lower than 10 ms to be entered or applied. Current Observation: GUI restricts UPS0 to UPS1 Gap to ≥10 ms Lower values cannot be typed or requested through “Request Update” Timing diagram updates accordingly and prevents further reduction Current Configuration: Number of Pulses: 24 Search Range: 20 Signal Sampling Frequency: 1000 kHz Capture Duration: 300 µs Algorithm: Hilbert Wide User Param #8: 384 Transducers: 200 kHz gas ultrasonic transducers Objective: Targeting approximately 100 Hz measurement rate for high-speed gas flow measurement experiments. Questions: Is there a firmware-level or GUI-level limitation preventing UPS0→UPS1 Gap below 10 ms? Can this parameter be modified directly in source code or header configuration? Is the limitation related to: USS processing time, transducer ringdown, GUI validation, or MSP430FR6043 hardware timing constraints? What is the minimum achievable stable UPS0→UPS1 Gap for gas mode on EVM430-FR6043? Additional Notes: The ADC waveform is stable and frequency sweep optimization is currently in progress. The goal is to experimentally evaluate higher acquisition rates while maintaining acceptable DToF stability.EVM430-FR6043msp430fr6043Medical & healthcarehttps://e2e.ti.com/administrators1/ultrasonic1/f/ultrasonic-sensing-forum/1642042/tmux9832-requesting-tmux9832-datasheet/6336825Thu, 07 May 2026 17:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dda978cd-6b5b-45ed-b77c-8ac902b807edKaty WestHi Jason, Have you submitted a request for the datasheet through our secure resources portal? You can find the "request more information" section on the product page! Best, Katy