User's Manual
Table Of Contents
- Glossary
- Product Description
- Regulatory and Compliance
- EmbracePlus product labeling
- EmbracePlus laboratory testing
- EmbracePlus Symbols used in labeling
- Intended use
- Indication for use statement
- Intended population and use environment
- Patients population and Medical Conditions
- Essential Performance Statement and Safety Information
- Service Life
- Limitations
- Warnings and Precautions
- Risks and Benefits
- EmbracePlus Materials & Biocompatibility
- Technical Specifications and Performance Characteristics
- Storage and Use Conditions
- Dust and Water Resistance
- Compatibility with MR and X-ray Scanning
- EMC Environment
- Getting started with EmbracePlus
- Troubleshooting
- Privacy
The information contained in this document is confidential and is the property solely of Empatica, S.r.l.. Any reproduction in part or in whole without
the written permission of Empatica, S.r.l. is prohibited. © Empatica S.R.L, 2021. All rights reserved.
18
Data Collection Specifications
Synchronization
Sensor synchronization: All sensors are always synchronized between them.
The sensor raw data contains exactly the same amount of data at a nominal
frequency for every sensor.
Internal synchronization: EmbracePlus internal clock has a maximum
accuracy of ± 5 ppm (parts per millions). Thus, as every other electronic
system, over a long enough period of time the internal clock might drift.
Timestamp synchronization: When EmbracePlus is connected to the phone
via Bluetooth® connection, it is using the accurate UTC timestamp in
milliseconds (obtained via Network Time Protocol - NTP). This synchronization
allows to estimate and compensate the EmbracePlus internal drift in order to
export sensor raw data with an accurate timestamping.
Data collection configuration
Device standby: EmbracePlus is always-on (no switch-off feature for the
users)
Data recording: EmbracePlus is always collecting data (recording only pauses
while the device is charging using the cable charger, with the On-Wrist
Charger the recording is not paused)
Bluetooth® reconnection: When the paired phone is in range,
EmbracePus connects to it immediately and automatically
Data synchronization: EmbracePlus aggregates the data coming from its
sensors every minute. When the Bluetooth® connection is continuously
available, EmbracePlus transmits the most recent minute of data recorded to
the paired phone. Otherwise, when a Bluetooth® connection is not available,
EmbracePlus stores the data in its memory and then synchronizes it (oldest
data first) when the connection is re-established.
Overwrite policy: EmbracePlus is using a FIFO (first-in, first-out) policy when
its memory is full, namely the most recent data is not saved in its memory
(discarded) to preserve older data.
Sensors Configuration
HR-optimized & respiration-optimized
configuration
HRV-optimized
Description
Configuration to optimize HR and HRV performances while maintaining a good
rate of battery consumption and data generated.
Accelerometer
52 Hz, ±16g
Gyroscope
OFF
Temperature
1 Hz
PPG
52 Hz (red/green wavelenghts)
104 Hz (red/green wavelenghts)
EDA
4 Hz
Battery duration
3+ days
Memory capacity
24+ hr