A.H. Systems SAS-550-1B Manual de instrucciones - Página 6
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A.H. Systems Model Active Monopole Antennas
OPERATING INSTRUCTIONS
ASSEMBLY INSTRUCTIONS
To prepare the antenna for operation, attach the telescoping rod antenna
element to the top of the high impedance preamplifier. Do not operate the
Monopole antenna with the Battery Charger connected.
SETUP INSTRUCTIONS
The amplifier and ground plane can be mounted to any tripod with a 1/4-20
attaching stud. Attach the rod antenna to the connector on the top of the
amplifier. Extend the rod antenna to 41" (104 cm) above the ground plane.
Connect the output BNC connector on the side of the amplifier to the input of a
50 receiver or spectrum analyzer. Establish a ground connection to the
ground plane if required by the test specification.
The POWER indicator LED will illuminate and stay lit as long as the battery has
sufficient voltage to power the preamplifier. If the LED does not illuminate, do
not use the preamplifier until the battery has been recharged.
GENERAL USE INSTRUCTIONS
The calibration tables shown provide a listing of the frequency of operation and
its antenna factor in dB/m. The field strength is the receiver voltage in dBV
plus the antenna factor (refer to the antenna factor calibration) plus any cable
loss. When making a measurement, mount the antenna on an appropriate mast
or tripod. Ensure that the active monopole antenna is turned on and use the
appropriate correction factors. The active monopole antenna is easy to set up
and provides good reception with a minimal need for space. Its flat 0 dB
antenna factor makes it a convenient choice when calculating the field intensity.
The signal field strength is the receiver voltage in dBV plus the antenna factor
(refer to the antenna factor calibration tables) plus any cable loss.
A.H. Systems inc. – Nov 2019
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