Flock of Birds Class B® Home > Products > Flock of Birds Class B Ascension's new Class B Flock is a regulatory-compliant version of the popular Flock of Birds DC magnetic tracker. The tracker is housed in a metallic enclosure with appropriate modifications to fully meet IEC 60601 part 1 and part 2. Use it to track the position and orientation in real time of instruments including ultrasound probes. Tracking accuracy is unaffected by the nearby presence of conductive metals including aluminum and stainless steel. Click here to download the product brochure (PDF). Class B Flock Compliant with Electrical, EMI and Safety Regulations

Mid-Range Transmitter

Range Up to +4 ft (1.2 m) coverage

Set-up & Use: Our mid-range transmitter is ideal for desktop applications in environments containing conductive metals.

Note: Transmitters are not interchangeable between systems.

3D image reconstruction in ultrasound Telemedicine Medical instrument tracking Quantitative measurement

Pulsed DC magnetic technology	Five times less susceptible to distortion caused by conductive metal than AC technology. Occlusion-free tracking
Class B certified	Compliant with electrical, EMI and safety standards
Quantitative measurement	Improves diagnostic capability
6 degrees-of-freedom	Unrestricted range of motion.

TECHNICAL
Translation range:	1.2m (±4') in any direction
Angular range:	±180° Azimuth & Roll ±90° Elevation
Static Accuracy Position*:	1.8mm (0.07") RMS
Static Accuracy Orientation*:	0.5° RMS
Static Resolution Position:	0.5mm (0.02") @ 30.5cm (12")
Static Resolution Orientation:	0.1° @ 30.5cm (12")
Measurement rate:	Up to 144 measurements/second
Outputs:	X,Y,Z positional coordinates and orientation angles, or rotation matrix
Interface:	RS-232C
Format:	Binary
PHYSICAL
Transmitter:	Mid-Range Transmitter: 9.6cm (3.75") cube with 3.05m (10') cable
Sensor:	25.4mm x 25.4mm x 20.3mm (1.0" x 13.0" x 0.8") cube with 3.05m (10') cable. Weight: 21 g (0.7 oz) without cable, 169 g (6.0 oz) with cable
Enclosure:	5.0cm x 27.9cm x 22.9cm (2" x 11" x 9")
Power:	Medical grade
Operating Temp:	10°C to 40°C (50°F to 104°F)
Operating Humidity:	10% to 90% non-condensing

*Accuracy verified over range from 20.3cm to 76.2cm. Class B Flock is a general-purpose motion tracker suitable for many applications. Biomedical references in this document are examples of what medical companies have done with Ascension trackers after obtaining all necessary medical certifications. Ascension trackers are not certified for use in medicine without the end user/OEM complying with all pertinent FDA/CE regulatory requirements.

EN 60601-1 (1997), EN 60601-2 (2001) Radiated EMI EMC Immunity Electrical Safety Patient Contact Back to Top