CTA28 Datasheet, PDF (3/11 Pages) Radiometrix Ltd – CTA88 chip based 2-channel I/O Application Boards

TX application board jumpers and DIP switches
The TX encoder board has 4 jumpers and 2 DIP switches. The jumpers are used to select the number of
operating modes featured in the board while the 4 way and 8 way DIP switches are used for frequency
channels selection and address selection respectively.
Figure 2: CTA28 TX application board PCB (top view)
TX Jumpers
Assumed the board is held "long side horizontal" with the RF connector and DIP switches at the top
Jumper. Name
Function
Position
Mode
JP10
SUPPLY Selects which power supply is fed to Top
Low current / always
the user inputs busbar
present +5v (100mA
(Only EVER fit one jumper on this
max, total) (default)
header)
Middle
Main +5v (250mA).
In low power mode this
rail is only
Present during
actuation
Bottom
Unregulated Vin, via
switch and 1A schottky
diode
Radiometrix Ltd
CTA28 Demo board
page 3