Main Page → Active Marker Tracking → Active Marker Tracking: Firmware v0.8
The OptiTrack Active Marker Kit allows synchronized tracking of active LED markers using an OptiTrack camera system. The Active Marker Kit consists of the Base Station, the Tags, and the Active LED markers, and it requires the eSync 2 with an Ethernet camera system. Once everything is setup, the Base Station becomes the sync master for both the camera system and the active markers. It sends out sync signals via RCA output and radio frequency waves allowing precise synchronization between camera shutters and illumination of the Active LED markers. The synchronized illumination allows labeling of individual markers in Motive.
When using the OptiTrack Active Marker Kit, active markers are labeled individually from their unique illumination patterns, and only the correctly labeled active markers get contributed to the rigid body solve. The biggest benefit of individual marker labeling is that the markers can be placed in a perfectly symmetrical arrangement among multiple rigid body assets that share similar placements. Each marker labeled through this the active labeling method is represented with marker IDs less than 5000 in Motive.
The synchronization hub for the camera system. (The eSync 1 can also be used)
Used as the sync master for both the active LED markers and the camera system. It sends out sync signals via RCA output and RF emitter for synchronizing the eSync and the Tags.
The Tags receive RF signals from the Base Station and correspondingly synchronizes illumination of connected active LED markers.
Emits 850 nm IR light. 4 active LEDs in each bundle and up to two bundles can be connected to each Tag.
(8 Active LEDs (4(LEDs/set) x 2 set) per Tag)
Size: 5 mm (T1 ¾) Plastic Package, half angle ±65°, typ. 12 mW/sr at 100mA
Follow the below steps for synchronizing and tracking the active markers in Motive.
› Q : The synchronization pane indicates that the camera system is synchronized to the Base Station. However, the active markers are flickering from both the 3D viewport and 2D camera views in Motive.
A: First of all, make sure the Application Settings is configured for tracking active markers. If the flickering of markers persists, it indicates the camera system and active LED markers are incorrectly synchronized. This usually occurs when power cycling the Base Station or when synchronization settings are altered in Motive. You can fix this by power cycling the Tags.
› Q : In the Synchronization pane, no input signal is detected.
A: Make sure the sync output (white) of the base station is connecting to the Input 3 of the eSync 2. Then, Motive must be configured to sync to the Reserved source.