User's Manual

Hardware Development Guide of Module Product
All Rights reserved, No Spreading abroad without Permission of ZTEWelink 42
错误！未找到
用源。
ZM8620_V2
The PCB layout is shown in the Figure 8-2.
Figure 8–2 Recommended PCB layout
 NOTE:
The radio frequency bases adopted by the antenna interface of ZM8620_V2 module is
U.FL-R-SMT-1(80)(HRS)/ECT818000071(ECT) at present instead of adopting 20429-001E MHF-A13
of I-PEX by ZM8620 before.
8.2 Proposal on Layout of Product in Terminal Product
The module layout among other terminal products should take full consideration of the electric magnetic
compatibility. As the types of terminal products vary and their circuit layouts are different, when
considering the module layout, we should reduce the electric magnetic interference from other devices
upon the module. Taking 3G Internet-access laptop as an example, during the layout of laptops, make
sure that the module is not adjacent to the switch power or the high-speed signal cable, and well protect
the cabling of these interference sources. At the same time, keep the antenna and the coaxial cables of
network cables and antenna far away from the interference sources. Keep the module away from the
devices that have a large heat-radiating capacity such as CPU, hard disk and south bridge, to guarantee
that heat can be radiated effectively.