[ASUS VivoWatch 5 AERO] Measuring Pulse Transit Time Index (PTT) | Official Support

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Product ASUS VivoWatch 5 Aero

[ASUS VivoWatch 5 AERO] Measuring Pulse Transit Time Index (PTT)

Measuring Pulse Transit Time Index (PTT)

Understanding Pulse Transit Time Index (PTT)

Stay on top of your physical and mental well-being with ASUS VivoWatch 5 AERO. The VivoWatch employs advanced wearable measurement technologies, utilizing ECG electronics and PPG optical sensors to determine the difference in time between signals and calculate the velocity and pressure of blood flow. The wristband's PTT measurement is valuable for assessing overall health and emotional stress levels.

Measuring Pulse Transit Time Index (PTT)

1. Choose the Pulse Transit Time Index measurement option

2. Tap the Start button on the screen

3. Gently place your index finger on the sensor below the screen

4. Onscreen will be displayed your real-time Pulse Transit Time Index, heart rate, blood oxygen reference value, and relaxation index. This data will also instantly synchronize to your ASUS HealthConnect App.

How to get accurate Pulse Transit Time Index (PTT) readings with the ASUS VivoWatch 5 AERO

1. Ensure the device is clean and free of dirt or debris.

2. Before starting the measurement, place your arm with the wristband flat on a table to minimize any movement that could affect the accuracy of the readings. It's best to sit in a chair with a backrest, relax your back against it, keep your feet flat on the floor, and minimize physical exertion. A relaxed and seated position is ideal for Pulse Transit Time Index (PTT) measurement.

3. To begin the measurement, gently touch the sensor on the screen with your index finger and maintain a still, relaxed state, keeping the watch snug on your wrist.

Incorrect methods of Pulse Transit Time Index measurement

1. Avoid using excessive force when touching the sensor with your index finger. When you apply too much pressue, the small blood vessels at the tip of your finger can become compressed, causing the sensor to give inaccurate readings.

2. During Pulse Transit Time Index measurement, keep your index finger on the sensor. Breaking contact can lead to the sensor receiving the wrong signals, which may result in inaccurate measurements.

3. Minimize talking, eating, or other activities during Pulse Transit Time Index measurement. Avoid intense physical activity, smoking, or drinking coffee before measuring.

Troubleshooting

1. Verify that your ASUS VivoWatch 5 AERO's MCU FW has been updated to the latest firmware version by visiting ASUS HealthConnect > Devices > Software Update > Check for Updates.

2. Make sure your personal information in ASUS HealthConnect is accurate, including gender, age, height, weight, and the wrist you prefer to wear the VivoWatch.

3. Make sure the wristband is fastened securely and that the back of the watch is comfortably pressed against your wrist during measurement.

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