User manual for Vernier's GoDirect EKG sensor, covering setup, electrode placement, channels, specs, and troubleshooting for educational EKG and EMG…
This user manual guides educators and students through setting up and using the GoDirect EKG sensor for educational experiments. It covers charging, Bluetooth and USB connections, electrode placement for EKG and EMG, channel configurations, and specifications. The sensor measures heart activity and muscle contractions with two optimized outputs. Safety warnings and battery care are included. It is designed for educational use only and not for medical or industrial applications.
| Range | +200 mV |
|---|---|
| Resolution | 0.024 pV |
| EKG Channel Settings | High-pass: 0.300 Hz, Low-pass: 22.5 Hz —3 dB cutoff with -80 dB attenuation above 50 Hz |
| EMG Channel Setting | High-pass: 2Hz, Low-pass: 29 Hz —3 dB cutoff with -80 dB attenuation above 50 Hz |
| Heart Rate Calculation | Sample window: 6s, Advance interval: 1 s |
| Maximum Sampling Rate | 400 samples/s |
| USB Specification | 2.0 |
| Wireless Specification | Bluetooth 4.2 |
| Maximum Wireless Range | 30m |
| Battery | 300 mA Li-Poly |
| Battery Life (Single Full Charge) | ~24 hours |
| Battery Life (Long Term) | ~500 full charge cycles |
See www.vernier.com/manuals/gdx-ekg for a list of compatible software.
Single full charge lasts ~24 hours, and the battery lasts ~500 full charge cycles (several years depending on usage).