A.H. Systems SAS-550-2B Operation Manual - Page 7
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A.H. Systems Model Active Monopole Antennas
CHARGING THE BATTERY
Position the input voltage selector located next to the wall plug on the back of
charger to the proper voltage (either 110
Hz). Be sure to check the available voltage and adjust the voltage selector as
needed before use. The amplifier 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.
REPLACING THE BATTERIES
Remove the four 6-32 flat head screws from the bottom of the ground plane.
Disconnect the battery lead from the PC card. Re-connect the lead from the
new battery pack to the PC card. Snug the four 6-32 flat head screws. Insure
that the orientation of the amplifier box is that the input rod connector is facing
toward the center of the ground plane.
ECF-10K (Equivalent Capacitance Fixture)
The ECF-10K is an equivalent capacitance fixture constructed per IEEE 291
and ARP 958. This is an indispensable tool used for gain adjustment and
calibration of the active monopole antennas. The ECF-10K is used as a signal
substitution source when calibrating the active monopole antennas. Refer to the
alignment and calibration procedures below.
A.H. Systems inc. – Nov 2019
REV D
120 Vac, 60 Hz or 220
–
240 Vac, 50
–
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