Norsat International Inc. NSLK3200 ユーザーズマニュアル
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Antenna
The antenna consists of the dish reflector, feed horn, OMT, flex waveguides,
boom arm with built in rigid waveguide and mechanical support structure. The
mechanical support structure positions and points the antenna reflector in
order to aim the antenna beam at the required satellite.
boom arm with built in rigid waveguide and mechanical support structure. The
mechanical support structure positions and points the antenna reflector in
order to aim the antenna beam at the required satellite.
Transceiver
The Transceiver consists of block upconverter/transmitter, a 15 W or 25 W
solid state power amplifier (SSPA) and a low-noise block (LNB) downcon-
verter. The block upconverter converts the incoming L-band (950-1450 MHz)
signal to Ku-band (14 -14.5 GHz). That signal is then amplified by the 15 W or
25 W SSPA, and fed through the antenna. Thus, after converting to dBW, the
system provides a maximum effective isotropic radiated power (EIRP) of 53
dBW for the 15 W SSPA and 55.5 dBW for the 25 W SSPA.
solid state power amplifier (SSPA) and a low-noise block (LNB) downcon-
verter. The block upconverter converts the incoming L-band (950-1450 MHz)
signal to Ku-band (14 -14.5 GHz). That signal is then amplified by the 15 W or
25 W SSPA, and fed through the antenna. Thus, after converting to dBW, the
system provides a maximum effective isotropic radiated power (EIRP) of 53
dBW for the 15 W SSPA and 55.5 dBW for the 25 W SSPA.
The LNB then down-converts the down-linked Ku-band signal:
•
A: 11.7 - 12.2 GHz
•
B: 12.25 - 12.75 GHz
•
C: 10.95 - 11.7 GHz
to an L-band signal:
•
A: 0.95 - 1.45 GHz
•
B: 0.95 - 1.45 GHz
•
C: 0.95 - 1.7 GHz
Peripherals
The peripherals aid in antenna pointing and include the following:
•
Compass: used for azimuth settings
•
Inclinometer: used for elevation settings
•
Level: used to ensure antenna is level
•
Interface/Indicator: interface for IFL connections, indicates when the
transmitter is on and indicates the receive signal strength
transmitter is on and indicates the receive signal strength
•
Ku-L Block Down-converter
Compass
The fluxgate compass has a digital display with an accuracy of
degree.
The compass is mounted on the base of the antenna in order to accurately
indicate the azimuth of the antenna beam. The compass is powered by 12 V
supplied from the Baseband/IF unit. It is connected to the Interface Indicator
unit by a flying lead with a multi-pin connector.
indicate the azimuth of the antenna beam. The compass is powered by 12 V
supplied from the Baseband/IF unit. It is connected to the Interface Indicator
unit by a flying lead with a multi-pin connector.
As with all fluxgate compasses, best performance occurs when the compass
is level and there is no ferrous metal objects around. To compensate for both
hard and soft magnetic interference, the compass should be calibrated. The
compass is calibrated at the factory, however, it is beneficial to re-calibrate it
is level and there is no ferrous metal objects around. To compensate for both
hard and soft magnetic interference, the compass should be calibrated. The
compass is calibrated at the factory, however, it is beneficial to re-calibrate it
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