Data Sheet

FSC-BT836B
Shenzhen Feasycom Technology Co.,LTD www.feasycom.com
The mother board should have no bare conductors or vias in this restricted area, because
it is not covered by stop mask print. Also no copper (planes, traces or vias) are allowed in this
area, because of mismatching the on-board antenna.
Figure 6: FSC-BT836B Restricted Area
Following recommendations helps to avoid EMC problems arising in the design. Note that
each design is unique and the following list do not consider all basic design rules such as
avoiding capacitive coupling between signal lines. Following list is aimed to avoid EMC
problems caused by RF part of the module. Use good consideration to avoid problems arising
from digital signals in the design.
Ensure that signal lines have return paths as short as possible. For example if a signal
goes to an inner layer through a via, always use ground vias around it. Locate them tightly and
symmetrically around the signal vias. Routing of any sensitive signals should be done in the
inner layers of the PCB. Sensitive traces should have a ground area above and under the line.
If this is not possible, make sure that the return path is short by other means (for example
using a ground line next to the signal line).
FCC Statements
(OEM) Integrator has to assure compliance of the entire end-product incl. the integrated
RF Module. For 15 B (§15.107 and if applicable §15.109) compliance, the host
manufacturer is required to show compliance with 15 while the module is installed and
operating.
Furthermore the module should be transmitting and the evaluation should confirm that the
module'sintentional emissions (15C) are compliant (fundamental / out-of-band). Finally
the integrator has to apply the appropriate equipment authorization (e.g. Verification) for
the new host device per definition in §15.101.