Array Solutions - SAL12/20/30 - Mark II Manual – Rev. 1.5.1 – September, 2018
27
Initial Checkout
o
Note: The controller has been designed to provide loop diagnostic capabilities to
assist in initial checkout as well as troubleshooting.
o
Ensure that the controller is connected to a receiver and that it is connected to the
supplied power source. Enable the noise blanker on the receiver (if available).
o
Turn on the controller by pressing the PWR button. The LED’s should all light
and a line should rotate through the directions.
o
Run the Loop Strength Test and the Loop Polarity and Array Delay Test outlined
below.
The Loop Strength Test
The purpose of this test is to determine how well each pair of loops are matched. In the
BI-directional mode, you are listening to only one loop at a time. This provides a
convenient way to listen individually to each loop.
1.
Press the BI button to select the BI-directional mode.
2.
Press the direction change arrow so that the LED’s point to both the northeast and
southwest direction.
3.
Tune to an AM Broadcast station coming from either a northeast or southwest
direction that has a steady signal.
4.
Observe the signal strength from the station. Then press FLIP button while
observing the signal strength. Then, press the FLIP button again.
The signal
from the station should be EXACTLY the same
5.
Next, press the direction change arrow so that the LED’s point to the northwest
and southeast direction.
6.
Tune to an AM Broadcast station coming from either a northwest or southeast
direction that has a steady signal.
7.
Observe the signal strength from the station. Then press and hold the FLIP button
while observing the signal strength. Then, release the FLIP button.
The signal
from the station should be EXACTLY the same.
o
NOTE: If the signal strength levels are not the same, then the loops are not
matched and directivity will be disappointing, especially on frequencies below 4
MHz!
