Antennas - Siemens SCALANCE M800 Operating Instructions Manual

Connecting up

4.6 Antennas

4.6 Antennas
Note
Use the antennas from the accessories program for the M87x device. You will find more
detailed information in "Accessories (Page 17)". If you use a different antenna, there is no
guarantee that the device will function according to the specification.
The antenna socket for connecting the antenna is of the type SMA. The antenna used
should have an impedance of about 50 ohms.
Minimum clearance to the device
The device may only be operated when the distance between the device (or antenna) and
user is at least 20 cm.
Notes on lightning protection
Danger due to lightning strikes
Antennas 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.
Suitable lightning protectors are available in the range of accessories of SIMATIC NET
Industrial WLAN:
● Lightning protector LP798-1N (order no. 6GK5798-2LP00-2AA6)
● Lightning protector LP798-2N (order no. 6GK5798-2LP10-2AA6)
Note
We recommend that you use the maintenance-free lightning protector LP798-2N.
Exception:
When there is also DC power supplied via the antenna cable. In this case, only the
lightning protector LP798-1N can be used.
● Depending on the connector, an adapter cable is required to connect to SMA.
52
CAUTION
WARNING
Operating Instructions, 08/2018, C79000-G8976-C331-08
SCALANCE M874, M876