SWRU064
8
2.6
Trouble-shooting
If the module does not operate as described in this document, try the following.
Problem Possible
solution
LED is continuously on
Push the “ON” button once more. If this
does not work, reset the micro-controller
(see below).
LED does not start blinking after “ON” is
pressed
Check battery voltage. If less than 2.7 Volt,
replace battery. Only replace with a battery
of the same type.
If battery voltage is OK, reset the micro-
controller (see below).
Receiver does not receive packet from
closely located transmitter.
Use a Spectrum Analyser at 868.3 MHz to
check the module during transmission.
Connect the analyser to the external antenna
connector foot-print and measure the output
power and frequency using the “max hold”
function. The output power shall be
approximately –10 dBm with a peak at 868,3
MHz +/-10kHz.
Test the receiver the same way in transmit
mode.
The micro-controller can be reset by shorting the reset line to ground for a short
moment. The reset line is located at the edge connector pin 6. Ground is pin 1. The
orientation mark is between pin 2 and 3.