User's Manual

4-8 The Tx wand antenna Installation Manual
One-antenna zone
To tune a one-antenna zone, refer to Figure
4.10 and use the following instructions:
1. Using the spanner key provided or a
spanner screwdriver, remove the antenna
cover by removing the spanner screws.
2. Remove the Controller cover by removing
the cover screws.
3. A “steady” and a “flashing” green bar
should be illuminating on LED13. The
“steady” green bar is the Tx Output Level
and should be above the “flashing” bar but
not off the top of the scale. The “flashing”
green bar is the Tx Supervise threshold
and should be at the second bar from the
bottom on LED13.
NOTES:
You want to have the “steady” green bar
as close to the top of LED13 as you can
get it without going off the scale (
Figure
4.10
). Adjust pot R6 (Tx Gain) to make it
this way. If the “steady” green bar is not
present, then you need to turn down pot
R6.
4. On the antenna, adjust C1 until LED1 is as
bright as you can make it (
Figure 4.11).
NOTE: The object here is to use the
brightness of LED1 to show when C1 has
been adjusted properly. Therefore, if you
try to see a change with LED1 set too
bright you may miss that change and be
slightly off tune. If this is the case, on the
antenna, turn pot R1 (LED brightness
adjust) counterclockwise until the yellow
LED1 dims then adjust C1 again.
5. After you have finished adjusting, on the
antenna, turn pot R1 completely
counterclockwise so that LED1 is dim.
6. On the Controller, return switch S3 to the
left position.
7. Replace the antenna cover and secure it
with the spanner screws.
8. Replace the Controller cover and secure it
with the screws.
Figure 4.10
LED13 Tuning Mode (S3 to the Right)
Figure 4.11 Tx wand antenna PCB