User's Manual

605-0000-742_MicroMAX_Hardware_Installation_Rev_G
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CONNECTING LIGHTNING AND SURGE PROTECTOR
The optional third-party lightning and surge protector (PolyPhaser) is implemented in the following
deployment scenarios:
ODU-to-IDU cable length of 40 meters or more (mandatory to use surge protector)
Deployment of MicroMAX in geographical areas that frequently experience severe lightning
storms
The lightning and surge protector protects the ODU-to-IDU CAT 5e cable's six used wires (two -48
VDC wires and four Ethernet Tx and Rx wires) from any electrical surges due to lighting strikes.
The protector is installed outdoors on the CAT 5e cable that connects between the MicroMAX and
the SDA-4S Type II. In other words, two CAT 5e cables are required for the following connections:
MicroMAX-to-protector connection
Protector-to-IDU connection
Warning: Do not install the lightning and surge protector during adverse weather
conditions when the threat of lightning strike is possible.
Note: The protector unit must be grounded to a low-impedance (low R and low L) ground
system to operate properly.
Note: For pricing and ordering of the PolyPhaser lightning and surge protector, contact
your Airspan representative.
To install the lightning protector:
1. Connect the protector in the direction according to the labels. The end labeled SURGE
accepts the cable from the MicroMAX; the end labeled PROTECTED accepts the cable from
the SDA-4S, or BSDU.
2. Feed the CAT 5e cable through the grommet (for each side). If the RJ-45 connector is
already crimped to the other end, ensure that you have fed the cable through the gland nut
beforehand. The gland nut secures the cable to the grommet.
3. Strip about 0.25" (6.35 mm) of the cable sheath and expose about 0.03" (0.8 mm) of the
strands/wires.
4. Secure the wires to the protector's terminal block using the two spot ties. Each side of the
data and DC assembly has + or – markings to ensure lines entering (surge side) match
lines exiting (protected side).
Note: PolyPhaser should be installed close to the units but only externally.
PolyPhaser Wiring Diagrams
When working with SDA