Norsat International Inc. NSLK3200 ユーザーズマニュアル
Page 12
Norsat NewsLink
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at new locations or if the magnetic environment/interface changes. Refer to
“Compass Calibration” on page 89 for instructions on re-calibration.
“Compass Calibration” on page 89 for instructions on re-calibration.
Inclinometer
The inclinometer has a digital display with an accuracy greater than 0.5
degrees and is powered by a standard 9 V battery. The inclinometer is
mounted on the mechanical support of the antenna, located on the right hand
side of the RF back plate, in order to accurately indicate the elevation of the
antenna beam. The antenna has an offset angle of 18.9 degrees, which is
pre-programmed into the inclinometer so that the angle indicated is the eleva-
tion angle of the antenna boresight.
degrees and is powered by a standard 9 V battery. The inclinometer is
mounted on the mechanical support of the antenna, located on the right hand
side of the RF back plate, in order to accurately indicate the elevation of the
antenna beam. The antenna has an offset angle of 18.9 degrees, which is
pre-programmed into the inclinometer so that the angle indicated is the eleva-
tion angle of the antenna boresight.
Only the top button of the inclinometer should be used. The top button has the
following functions:
following functions:
•
First press turns the inclinometer ON
•
Pressing the button again for less than three seconds turns on the light;
when the light is on, the inclinometer holds the last measurement
when the light is on, the inclinometer holds the last measurement
•
Pressing the button again for less than three seconds turns off the light
•
Pressing and holding the button for more than three seconds turns off the
inclinometer
inclinometer
The inclinometer is calibrated at the factory. The mechanical variation is cali-
brated out at the factory.
brated out at the factory.
N
OTE
The angular offset between the aluminum backplate of the antenna and the
antenna boresight is 10.3 degrees. Thus, if the antenna is adjusted so that the
aluminum backplate is perfectly vertical, a normal inclinometer will read 90
degrees. In this position, the antenna boresight is 10.3 degrees above the
horizon.
antenna boresight is 10.3 degrees. Thus, if the antenna is adjusted so that the
aluminum backplate is perfectly vertical, a normal inclinometer will read 90
degrees. In this position, the antenna boresight is 10.3 degrees above the
horizon.
Level
The spirit bulls-eye level is mounted on the antenna base in order to accu-
rately indicate how level the support base is. The level is 1.250 inches in
diameter, filled with clear mineral spirits. The mounting case is brass with a
black finish. The sensitivity per 0.1 inch is 45 minutes, with a tolerance of
rately indicate how level the support base is. The level is 1.250 inches in
diameter, filled with clear mineral spirits. The mounting case is brass with a
black finish. The sensitivity per 0.1 inch is 45 minutes, with a tolerance of
%.
Interface/Indicator Unit
The Interface/Indicator unit is the interface point with the IFL. The Interface/
Indicator contains an LED which becomes illuminated when the transmitter is
ON. A three character display indicates the received power within a specified
10 MHz window. The center frequency of this window is set in the
Indicator contains an LED which becomes illuminated when the transmitter is
ON. A three character display indicates the received power within a specified
10 MHz window. The center frequency of this window is set in the
A
LIGNMENT
screen of the Norsat NewsLink GUI.
Ku-L Block Down-converter
Converts the Ku-band transmit signal, received from the SSPA monitor port,
to transmit monitoring L-band (950-1450 MHz) signal.
to transmit monitoring L-band (950-1450 MHz) signal.
10
±