Photocells - Polifemo Double
The double-photocell system for athletics consists of 2 synchronized photocells positioned one over the other. Only the simultaneous interruption of both the photocells generates a signal. This system ensures that the photocells are interrupted by the competitor’s bust and not by the movement of his/her arms.
The special brackets make it easy to line up the photocells and their mirrors and to achieve the correct extension of the sensitised zone.
Technical Data Table
| Weight: | 445 g | |
| Dimensions: | 59 x 180 x 104 mm (l x p x h) | |
| Resolution: | 0,125 ms | |
| Delay in relation to event: | 1 ms | |
| Operating temperature: | -25 °C/+70 °C | |
| Power supply: | Internal | Rechargeable batteries : NICd, NiMH 1.2V Non-rechargeable batteries : alcaline 1.5V |
| On polifunctional 6 pole socket | 5V¸13V with protection circuit | |
| On recharge jack | 5V¸13V with protection circuit (voltage >8V to allow recharge) | |
| Protection circuit | for all models | |
| Battery recharge | Embedded ‘smart’ recharge device | |
| Battery life | 18 hours | |
| Processor: | C-MOS 8 bit microprocessorbit |
Data Sheet for all Polifemo
| Model | Polifemo | Polifemo Light | Polifemo Radio | Polifemo Radio Light | |
| Connections: | Polifunctional 6 pole socket | ✔ | |||
| Optoinsulated banana jacks | ✔ | ✔ | ✔ | ✔ | |
| Optical range: | 15m | ✔ | ✔ | ||
| 30m | ✔ | ✔ | |||
| 90 m (facing cells) | ✔ | ||||
| Controls Dip-switch: | line activated | ✔ | |||
| single/facing | ✔ | ||||
| TX/RX | ✔ | ||||
| Hold-off time | ✔ | ||||
| continous/one shot | ✔ | ||||
| type of signal transmitted (Start, Lap 1..6, Stop) | ✔ | ✔ | |||
| long/short signal | ✔ | ✔ | |||
| Impulse transmission for other devices | ✔ | ||||
| Radio transmission: | Digital FSK transmission; redundancy code with information accuracy check and autocorrection | ✔ | ✔ | ||
| Transmission channelling: | (16 channels selectable) | ✔ | |||
| Precision of impulse transmission: | ± 0.4 ms | ✔ | ✔ | ||
| Time base: | 4 MHz quartz ±10 ppm between -25°C and +50°C | ✔ | ✔ | ||
| Radio transmission range: | Bout 2 km | ✔ | |||
| Bout 300 m. | ✔ |