Maximizing Antenna Performance with the ATU
76
750.001.003
Revised June 1999
© 1999 AXCESS
TM
Inc.
TX
A
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te
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a
R
X
A
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te
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a
RX
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e
a
d
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T
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ad
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LEDs
Jp
7
Jp
6
Jp
5
Jp
4
Jp
3
Jp
2
Jp
1
Jp
10
Jp
1
1
Jp
9
Jp
8
1
2
3
4
5 Strongest signal
1
1
1
1
1
1
1
1
1
Jumper in inactive
position
Jumper in active
position
Figure 33 ATU with jumpers in original positions
Step 8:
Place jumpers in the
Inactive
position on all the headers.
Step 9:
On header Jp 11, place the jumper in the Active position.
Step 10:
One at a time, place the jumper in the Active position on
headers Jp1 through Jp9 and watch the LEDs for a strong
signal.
Step 11:
Place jumpers in the
Inactive
position on headers Jp1
through Jp9, keeping the jumper on header Jp 11 in the
active position.
Step 12:
Place the jumper in the Active position on header Jp10.
Step 13:
One at a time, place the jumper in the Active position on
headers Jp1 through Jp9 and watch the LEDs for a strong
signal.
Step 14:
When you have tested all the positions, reset the jumpers
to the position that gave the strongest voltage as indicated
by the strength of the LED lights.