A.H. Systems 2381 Manuel de l'utilisateur - Page 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. Adjust the rod length to

41" (1.04 meters). Do not operate the Monopole antenna with the Battery

Charger connected.

BATTERY CHARGING INSTRUCTIONS

Position the input voltage selector on the charger to the proper voltage (either

110 – 120 Vac, 60 Hz or 220 – 240 Vac, 50 Hz). Be sure to check the available

voltage and adjust the voltage selector as needed before use. The active

monopole ON-OFF switch must be in the OFF/CHARGE position to charge the

battery. Every hour of charge will result in two hours of operation for up to 10

hours of charging. Charging for up to 24 hours will not damage the battery.

Using the battery charger to operate the amplifier directly is not recommended.

Longest life and best performance can be obtained if the battery is charged

when the air temperature is between 65°F and 75°F (18° - 24°C). DO NOT

charge the battery in an air temperature below 40°F (4.5°C), or above 105°F

(40.5°C).

SETUP INSTRUCTIONS

The active monopole 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 active monopole. If the LED does not illuminate,

do not use the active monopole until the battery has been recharged.

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