2006Foro Brackets/Widgets
Sistema de contador inalámbrico para operadores de cámaras con transmisores y unidades de receptor
Tiene 20 años. Es posible que el equipo y los precios hayan cambiado desde entonces.
Lo que encontró el hilo
- El sistema utiliza un enlace de frecuencia de radio de 434 MHz con un rango de aproximadamente 50 pies y soporta 256 combinaciones de direcciones únicas para permitir varios pares seleccionables.
- Las necesidades de energía oscilan entre 9 y 24 voltios DC con un consumo actual alrededor de 30-80mA para unidades de transmisor y receptor.
- El receptor tally LED produce un pulso de salida de 500 milisegundos que permanece sólido si la frecuencia de entrada supera 500 milisegundos, con un retraso del receptor de 100 milisegundos.
- Photocell response spans 400-700 nanometers with a 600 millimeter cable length, and the transmitter tally LED brightness is variable based on the photocell input.
- The system achieved stable operation in most cases through unit repositioning, though some users experienced occasional signal dropout issues.
- Receiver tally LED brightness of 110,000 millicandela can cause excessive glare at close distances with talent and may require diffusion or tape covering.
- Operating temperature range is negative 30 to positive 60 degrees Celsius.
- The system can be powered through existing video assist or focus system cables, and optional aluminum cases, alternative power connectors, external antennas, and adapters are available at additional cost.
Depende de
- Effective range of approximately 50 feet is limited for applications requiring longer wireless links, such as 500-meter distances.
- Some units experienced intermittent signal dropout issues even after repositioning, with a code update mentioned as a potential solution.
- The system contains no internal battery and requires external power input.
- LED brightness can be problematic at close working distances unless diffusion is applied.
- Multiple participants reported needing customization or workarounds for their specific setups.