One power interface, router uses external power adapter to supply
power. The external power adapter shall:
1. Meet the EMC requirements of YD/T 983 and pass CCC
2. Input voltage: 198V-242V-50Hz;
3. Output voltage DC: 9V + 5%, ripple range + 100mV, output
4. The MTBF time of power supply is more than 30000 hours.
5. The power interface of the equipment itself and the DC output
interface of the power adapter should be a unified international
standard circular interface with a diameter of 2.1 mm.
6. The DC output power supply line of the adapter can be equipped
with EMI absorption magnetic ring.
7. Under normal conditions, the insulation resistance between the
metal housing of the equipment and the power cord shall not be less
8. There should be lightning protection and surge protection tests.
The lightning protection level should be at least 1.5KV.