Hongdian H7921/H7920 Basic 3G/4G Router - Manual (Page 26)

7 FAQ H792x 3G/4G Router
7 -10 (2014-05-28)
 This port for debug only, not for other application.
 Do not insert any other RJ45 cable into console port, otherwise router may work
abnormal.
3.2 Power supply
In order to get high reliability, H792x 3G/4G Router adapt wide voltage input: +5V～+36VDC,
support hot plug and complex application environment.
3.3 Review
After connect SIM/UIM card, Ethernet cable, necessary antenna, then connect power cable.
Please connect antenna before connect power cable, otherwise because of Impedance
mismatching, signal maybe poor.
Notice
Step 1 Check antenna connection.
Step 2 Check SIM/UIM card installation; confirm SIM/UIM card is available.
Step 3 Power on H792x 3G/4G Router, the LEFT SIM slot is SIM 1, take it as a example:
 After connect power 14s, router RUN solid light, means router system works ok.
 After connect power 25s, NET solid light, means router found the module.
 After connect power 25s, NET blinking quickly means router start to dial.
 After connect power 30s, RF shows the signal level.
 After connect power 45s, NET solid light means 3G/CELLULAR connected, if blinking slowly,
means 2G/2.5G connected.