Radiocrafts
Embedded Wireless Solutions
RCxxxxHP-DK
2020 Radiocrafts AS
RCxxxxHP-DK User Manual (rev. 3.04)
Page 11 of 13
RCxxxxHP-DB Circuit Diagram, PCB and Assembly layout
A full resolution schematic is found in RCxxxxHPDB_x_x.zip available from Radiocrafts’
webpage. To download follow this link to download your revision of the board:
https://www.radiocrafts.com/uploads/rcxxxxdbhp-usb_3_00.zip
The dimension on the board are 73.66 mm x 45.72 mm. The PCB feet are BS-19S from AVC,
which lifts the PCB 19.1mm from the table.
Troubleshooting
It doesn’t work. The Power LED is not lighting.
Is the USB connector active? Some USB ports may be disabled if it’s not commonly
in use. The Development board takes power from the USB port, and need an active
USB port to power the board.
Are all jumpers placed at the default position? P3 can disable POWER LED info, and
P9 can disable power to the module.
I cannot communicate with the UART through the serial port
Make sure that the RXD and TXD jumpers are inserted on P13.
Set up your terminal program according to the instructions in the Quick Start Guide.
Remember to select the correct COM-port and connect to this port.
Entering configuration mode (by press CONFIG button) the command prompt (“>”)
should be displayed on the terminal window. Make sure to exit the command mode
using the exit command (capital “X”).
I cannot communicate between two modules in buffered mode
Make sure that the address mode and CRC mode is the same in both modules (set
using the “M” Memory configuration command, refer to the RC232 User Manual).
Make sure the destination address is the same as the other modules Unique ID if
addressing is used (set using the “T” Destination address command, refer to the
RC232 User Manual).
Make sure to exit from command mode using capital “X”.
The present configuration can be listed to the terminal using the test command “0”
(zero).
-SIG variants do not able to communicate with each other. For further details, please
see the relevant User Manual.
The module consumes more than the rated current in OFF and SLEEP mode
Note that the ON/OFF signal pull up resistor R2 (100 kΩ) draws approximately 27 uA.
Remove this resistor when measuring the module current in OFF mode For
RC12xxHPDB.
Note that the level driver on the USB controller has common power as the module for
default jumper setting. Remove P3 jumpers during the measurements.