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Semtech SX1276 - Frequency Accuracy Check

Semtech SX1276
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WIRELESS, SENSING & TIMING PRODUCTS
SX1276 Development Kit
USER GUIDE
Revision 1.1 – May 2014 Page 51 of 53 www.semtech.com
©2014 Semtech Corporation
7.5 … perform a CW or PN9 Tx test on the SX1276
The SX1276 does not have a dedicated CW or PN9 Tx test mode implemented. However, it is possible to
perform this test manually by setting the device in Tx continuous mode, and feed PN9/15 data stream to
the DATA pin (DIO2/DATA), from a signal generator.
7.6 … check the frequency accuracy of the SX1276 module
There is a very simple way to get the frequency error of the sx1276 modules. The core idea is to set the
device in FSK and to set the frequency deviation to 0. In this case, the device will only emit a signal at the
center frequency. The difference between the measured value and the set value gives you the frequency
error.

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