ZOE-M8 series - Hardware Integration Manual
UBX-16030136 - R07 Production Information Product handling & soldering
Page 24 of 32
3 Product handling & soldering
3.1 Packaging, shipping, storage and moisture preconditioning
For information pertaining to reels and tapes, Moisture Sensitivity levels (MSD), shipment and storage information,
as well as drying for preconditioning see the ZOE-M8 Data Sheet [1].
3.2 ESD handling precautions
ESD prevention is based on establishing an Electrostatic Protective Area (EPA). The EPA can be a small working
station or a large manufacturing area. The main principle of an EPA is that there are no highly charging materials
in the vicinity of ESD sensitive electronics, all conductive materials are grounded, workers are grounded, and charge
build-up on ESD sensitive electronics is prevented. International standards are used to define typical EPA and can
be obtained for example from International Electrotechnical Commission (IEC) or American National Standards
Institute (ANSI).
GNSS receivers are sensitive to ESD and require special precautions when handling. Particular care must be
exercised when handling patch antennas, due to the risk of electrostatic charges. In addition to standard ESD
safety practices, the following measures should be taken into account whenever handling the receiver.
• Unless there is a galvanic coupling between the local GND (i.e. the
work table) and the PCB GND, then the first point of contact when
handling the PCB shall always be between the local GND and PCB
GND.
• Before mounting an antenna patch, connect ground of the device.
• When handling the RF pin, do not come into contact with any
charged capacitors and be careful when contacting materials that
can develop charges (e.g. patch antenna ~10 pF, coax cable ~50-
80 pF/m, soldering iron, …)
• To prevent electrostatic discharge through the RF input, do not
touch the mounted patch antenna.
•
When soldering RF connectors and patch antennas to the
receiver’s RF pin, make sure to use an ESD safe soldering iron (tip).
Failure to observe these precautions can result in severe damage to the GNSS receiver!
3.3 Safety precautions
ZOE-M8 SiPs must be supplied by an external limited power source in compliance with the clause 2.5 of the
standard IEC 60950-1. In addition to external limited power source, only Separated or Safety Extra-Low Voltage
(SELV) circuits are to be connected to the SiP including interfaces and antennas.
For more information about SELV circuits see section 2.2 in Safety standard IEC 60950-1 [6]
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