6.4 Antennas
The SC
ALANCE MUM853-1 has 4 antenna ports of the type SMA female.
Note
Use t
he antennas from the range of accessories for the device. You will nd more detailed
information in "Accessories (Page 26)". If you use a dierent antenna, there is no guarantee that
the device will function according to the specication.
You can either connect an external antenna directly to the device or connect it with a exible
connecting cable.
CAUTION
Minimum clearance to the device
The
device may only be operated when the distance between the device (or antenna) and user
is at least 20cm.
Notes on lightning protection
WARNING
Danger due to lightning strikes
Ant
ennas installed outdoors must be within the area covered by a lightning protection system.
Make sure that all conducting systems entering from outdoors are protected by lightning
protection electrical bonding.
When implementing your lightning protection concept, make sure you adhere to the
requirements of the VDE 0182 or IEC 62305 standards.
• A suitable lightning conductor LP798‑1N (article no. 6GK5798-2LP00-2AA6) is available in
t
he range of accessories of SIMATIC NET Industrial WLAN:
Depending on the connector, an adapter cable is required to connect to SMA.
WARNING
Danger due to lightning strikes
Ins
talling this lightning protector between an antenna and a SCALANCEM device is not
adequate protection against a lightning strike. The LP798-1N lightening protector only works
within the framework of a comprehensive lightning protection concept. If you have questions,
ask a qualied specialist company.
Connection
6.4Antennas
SCALANCE MUM853-1
Operating Instructions, 03/2023, C79000-G8976-C650-05 53
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