Description
Technical specification
INTELLIGENT RAILWAY HANDSET EN50155
General features
- PIC32 microcontroller inside
- Insulated RS485 communication with on board computer or MMI (custom protocol )
- Audio In
- Audio Out
- Hidden microphone in the cradle
- 4-to-2 wire converter on audio input/output channel
- Display LCD 12 characters x 2 lines
- Keyboard 15 keys Silicone rubber
- Operating temperature: T3 class of EN 50155 (-25° to 70°C)
- Dimensions with cradle: 63 (W) x 202 (H) x 90 (D) mm
- Fastening holes : 4,2 mm
- Distance between fastening holes: 60 mm
- Weight : 400 g
Microphone (electret condenser)
- Sensitivity: -46 dB (± 3 dB) at 1kHz, 0dB=1V/Pa
- Frequency response: 100 Hz to 10 kHz
- Directivity: noise cancelling
- Operating voltage: 2 V (max. 10 V)
- Impedance: 2.2 kΩ at 1 kHz
Earphone (dynamic)
- Efficiency: 100 dB at 1 kHz (± 2 dB)
- Frequency response: 200 Hz ÷ 5 kHz
- Impedance: 300 ohm (± 15%) at 1 kHz
PTT switch
- Current: 100 mA max
- Contact resistance: < 1 ohm
- Electrical life: > 100.000 cycles
- Activation pressure: 240 g
- Pushbutton colour: RAL 2008
Hook switch
- Reed-switch with change-over contact
- Voltage: 100 Vdc max
- Current: 0.3 A max
Compliance
- EN50155, EN60068, EN61373, EN60950, UNI CEI 11170, EN45545