User's Manual

4-12 The Tx wand antenna Installation Manual
NOTE: Make sure that all connections have
been made as outlined in the previous section
and you have competed the steps in the
“Before you start” section on page 4-7.
To tune a Tx wand antenna, refer to Figures
4.11, and use the following instructions:
1. Using the spanner key provided or a
spanner screwdriver, take off all
antenna covers by removing the
spanner screws on each.
2. Take off 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 Tx Supervise threshold and should
be at the second bar from the bottom
on LED13 (
Figure 4.10).
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.Turn
off power to the system and:
a. Disable the antenna X, Y, Z
scan select by removing JP4.
(If it is not already removed.)
b. If this is a single antenna
system, skip to Step 4.e. If
this is a multi-antenna system,
one by one, remove, mark and
tape the ends of the wires that
are used in positions X, Y, &
Z of the Controller's P1
connector.
c. If this is not a 3 antenna
system, skip to Step 4.d.,
otherwise, insert the wire that
is marked "Z" into P1-pin2, or
the "X" position, and tighten
it. (Be sure that the "Unreg"
wire is also connected.)
Proceed to Step 5.
d. Insert the wire that is marked
"Y" into P1-pin2, or the "X"
position, and tighten it. (Be
sure that the "Unreg" wire is
also connected.) Proceed to
Step 5.
e. Insert the wire for the X
antenna into P1-pin2, or the
"X" position, and tighten it.
(Be sure that the "Unreg" wire
is also connected.) Proceed to
Step 5.
4. Turn on power to the system.
5. On the Tx wand antenna PCB, adjust
C1 until LED1 gets bright. If it gets
very bright, re-adjust R1, so that it just
turns on dimly.
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)