Technical Manual

Technical Manual AM Systems
Cross Point Device Explorer v4.4 Page 62 of 72
Tuning AM 8.7.5.2.4
The AM transceiver is performing at its best when maximum power is being transmitted at
58kHz. The Tuning screen shows a graphical display of the top and bottom antenna loop
tuning and their associated power.
Figure 47: Tuning AM
By changing the positions of the antenna jumpers on the transceiver board, you can find
the positions for both loops where they have the highest voltage output at 58kHz (the
vertical red line). The spot where the curves cross the red line is the actual transmitted
power. A higher output will increase the performance of the AM system, where a lower
output will result in less performance.
Make combinations of transceiver jumpers TUNE TOP1, TUNE TOP2, TUNE TOP3 to
achieve the highest voltage for the top antenna loop and do the same for the bottom
antenna loop using jumpers TUNE BOT1, TUNE BOT2 and TUNE BOT3.
Figure 48: Transceiver board antenna tuning jumpers
ANT
BOT2
ANT
BOT1
ANT
TOP2
ANT
TOP1
TUNE TOP1
TUNE TOP2
TUNE TOP3
3
TUNE BOT3
TUNE BOT2
TUNE BOT1