Transcript
Feed Installation Instructions 3 ft Antennas (with E-Mount) DA, UA, SU, SD, DAX UDA, UXA, SUX, SDX
NMT 543-01(e)
The feed system is a precision component which should be handled with special care during installation. For instance, always carry the feed, supporting casting plate side. Any damage may degrade the antenna’s performance. Repair is not possible on site.
1 - Monopolarized feed system orientation Output IEC Flange
Output IEC Flange + N adapter
Vertical polarization
Horizontal polarization
Vertical polarization
Horizontal polarization
TOP
TOP
TOP
TOP
2 - Feed orientation for dualpolarized feed system Output IEC Flange
Output IEC Flange + N adapter
TOP
TOP
3 - Polarization adjustment
(To do after antenna install on pipe)
- Loosen the 4 screws M5, adjust polarization ± 5°, tighten the 4 M5 screws Monopolar
Dual polar
±5°
±5°
±5°
±5°
M5 screws
N outputs towards the ground
4 - Guy wires pre-installation on reflector (For feed system without guy wires skip this step) - Hold the antenna in the correct orientation depending of the offset to the left or right of the support pipe on the tower. Outside Inside
x3
For an offset left
For an offset right
Top mark at the top Installed in reflector hole
Mount to the right
Mount to the left
db C ar
d ar bo
Do not change the length of the guy wires, it could damage the feed system, or decrease performances
d ar C
oa rd
The length of the guy wires is adjusted in factory (equal for the 3 guy wires).
Insert the 3 guy wires from the rear side of the reflector
Sales department : Radio Frequency Systems Kabelkamp 20, D-30179 Hannover (Germany) • Tel. +49-511 676-2520 • Fax +49-511 676-2521 Plant: RFS France Trignac (France) • Tel +33 (0)2 40 45 95 45 • Fax +33 (0)2 40 90 41 43
Top mark at the bottom
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5 - Feed system installation For feed systems without guy wires skip this step
Note : For feed systems equipped with guy wires, you will observe a little resistance to fix the feed casting ring with M5 bolts on reflector casting.
Hook the 3 guy wires on the rotating ring of the feed system
Reflector casting
Rotating ring
Take care to not brake mylar obturation
Principle for an antenna offset left
Feed casting ring
4 screws M5 4 SL washers 5 4 washers 5.3 Ø15
Overview of feed system orientation and guy wires attachment, depending of antenna offset (for monopolarized feed system provided with guy wires) Offset Left Feed set in vertical polarization
Offset Right
A little tension on guy wires is normal
A little tension on guy wires is normal
To set the feed in horizontal polarization, turn it 90° clockwise
Feed set in vertical polarization
To set the feed in horizontal polarization, turn it 90° clockwise
For feed system configured in vertical polarization and provided with N adapter pre-installed, if your N output is towards up, you need to dismount the N adapter, and turn it 180° to orientate the N output towards the ground. Replace N adapter with screws, taking care of the gasket Dismount N adapter fixation screws (M3,M4,M5 or M6)
Turn 180° N adapter
6 - Next instructions (Refer to chapter “Safety collar installation and orientation on pipe support“ of the main installation instructions)
NMT 543-01e
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