User's Manual

Installation Manual The Tx wand antenna 4-9
Two-antenna zone
To tune a two-antenna zone, refer to Figure
4.10 and use the following instructions:
1. Using the spanner key provided or a
spanner screwdriver, remove both
antenna covers by removing the
spanner screws on each.
2. Remove the Controller cover.
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 strength of the Tx Supervise
threshold and should be at the second
bar from the bottom of 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. Normally in two-antenna zones
jumper JP6 (Scan Rate) alternates
between illuminating LED1 and
LED2 as it checks the “X” and “Y”
antennas. For tuning two-antenna
zones, you want to isolate one antenna
at a time using jumper JP6. For these
instructions we will start with the “X”
antenna and then the “Y” antenna
second.
5. On the Controller, quickly remove
jumper JP6 (Scan Rate) so that only
LED1 (the “X” antenna output
indicator) is illuminating. This may
take a few attempts. You will not
leave the jumper in place while
tuning.
6. 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.
7. After you have finished adjusting, on
the “X” antenna, turn R1
counterclockwise so that LED1 is
dim.
8. Replace jumper JP6.
9. On the Controller, quickly remove
jumper JP6 (Scan Rate) so that only
LED2 (the “Y” antenna output
indicator) is illuminating. This may
take a few attempts. You will not
leave the jumper in place while
tuning.
10. On the “Y” 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