HSD-R300 is a standard 3U-8R plug-in board produced by Hunan Super String Technology,
supporting the standard CPCI interface. It is an on-board wireless communication board using an
embedded Linux operating system, supporting WLAN, 3G/4G and GPS functions, and is mainly used
for vehicle-to-ground communication in the rail transit industry.
| Power consumption | < 10W |
| CPU | ARM Cortex-A55 |
| Frequency | Frequency 1.5GHz, maximum 2GHz |
| Memory | 2GB LPDDR4x |
| EMMC | 8GB |
| Operating system | Embedded Linux Operating System |
| Network port | The backplane supports 2 Gigabit Ethernet interfaces. |
| Wireless | Support Wi-Fi 2.4GHz + 5GHz |
| WLAN Standards | Compliant with IEEE 802.11a/b/g/n/ac |
| 4G | All network communication standards, support 4G wireless communication and backward compatible with 3G/2G |
| GPS | Support BDS/GPS/GLONASS satellite system positioning |
| Front panel interface | 4G/WIFI composite antenna (TNC female socket); (N head outer thread inner hole) |
| Indicator Lights | 8 LED indicators |
| Specifications and dimensions | PCB size is 160mm × 100mm (L×W), board thickness is 1.6mm, panel width is 8R |
| Operating temperature | -20℃ ~ +70℃ |
| Ambient temperature | -40℃ ~ +85℃ |
| Cooling method | Natural air cooling |
| Vibration shock | IEC 61373-2010, meets Class I, Class B |
| Environmental testing | EN 50155-2017 |
