Panorama Antennas SW3-875 LGMQM4 Series Installation Instruction page 2

Installation Instruction – SW3-875
LGMQM4 Series
B.
Mounting requirements and selecting location
If the antenna will be co-located with other antennas or roof mounted equipment, ensure a minimum 30cm (12")
of clearance around the antenna in order to avoid any de-tuning or interference issues.
Select a mounting location – check that there is adequate under panel clearance and that there is no double skin
panel or cross brace present. Measure carefully for central position if applicable.
Ground plane requirement: This antenna range does not require a ground plane in order to operate. If a
ground plane is present it should be ≥500 x 500mm (20 x 20") in order to maintain insolation between the main
cellular elements
Mask the panel area around the hole position to protect the
paintwork and headliner. Drill a pilot hole, and then increase the hole
diameter to 19mm (3/4"), ensuring that drill/cutter bit does not
contact headliner. Clean area around the hole, carefully removing
Mount the Antenna
all swarf. Apply some petroleum jelly or paint around the hole to
prevent corrosion.
C.
Fitting the antenna
Note: The adhesive pad provides the sealing function of the antenna to mounting panel. The temperature range
for optimum pad bonding process is 21°C (70°F) to 37°C (100°F) - it is recommended that the installation is not
carried out in temperatures of less than 50°F (10°C).
Remove the protective backing from the underside of the antenna and feed the coaxial cables through the panel.
Position the antenna over the hole ensuring correct orientation and stick the antenna to the panel by applying
firm downward pressure.
Caution – A slotted/split nut is provided in order to simplify fitting it over the coaxial cables. When fitting the
nut, it is important to ensure that the cables are held centrally whilst the nut is correctly started on the threads.
The nut should fit freely by hand and only require a final tighten by spanner.
Assemble the nut and washer from underside and tighten to recommended torque of 5Nm.
D.
Routing and terminating coaxial cable(s)
Coaxial cable is a critical component of the antenna system – Panorama offers a range of suitable cables.
Connect the extension coaxial cables to the antenna – it may be necessary to identify the correct LTE extension
cables at the equipment end, depending on the installation configuration. (see the application note above)
Route the cables to the wireless device - avoid running them adjacent to any existing vehicle wiring or fouling any
moving vehicle components and observe the minimum bend radius applicable to the cable type.
If the cables are not pre-terminated, then fit the correct coaxial connectors or adapters as required.
The cables must not be routed in front of any airbag devices – note that these may be located behind
the windscreen pillar trim and the side of the roof head lining, depending on vehicle specification.
E.
Commission and Test
Check the GNSS cable (if applicable):
• Check the GNSS cable with DC to measure high resistance.
• Connect the GNSS cable to the GNSS receiver and check for satellite acquisition.
Check the comms cables:
• Earth continuity: connector body to vehicle ground should measure <0.2Ω (where applicable).
• Connector body to centre pin should measure low resistance (elements are DC grounded).
• Carry out VSWR check - the VSWR on all feeds should meet the specification in product data sheet.
• Connect the Cellular/LTE and WiFi cables (if applicable) or secure unused pigtails.
Waiver: This document represents information compiled to the best of our present knowledge. It is not intended to as a representation or warranty of fitness
of the products described for any particular purpose. This document details guidelines for general information purposes only. Always seek specialist advice
when planning installations and ensure that antennas are always installed by a properly qualified installer in compliance with local laws and regulations.