LTE-M mode

The following table shows recommended test cases for radiated LTE-M non-signaling mode.

Table 1. RF performance tests for radiated LTE-M non-signaling mode
Mode	Test item	Test specification/ID	Expected result	Note
LTE-M TX	LTE antenna efficiency and radiation pattern at TX frequencies	See nRF91 Series Antenna and RF Interface Guidelines	>50%	For analyzing antenna efficiency by using an RF signal generator as the signal source
	Total Radiated Power (TRP)		`Conducted TX power - antenna efficiency`	For analyzing antenna efficiency by using Device Under Test (DUT)-internal TX as the signal source
	LTE TX isolation to GNSS LNA input		Isolation >30 dB	Isolation from LTE antenna to Global Navigation Satellite System (GNSS) Low-Noise Amplifier (LNA) input at LTE TX frequency
LTE-M RX	LTE antenna efficiency and radiation pattern at RX frequencies		>50%
LTE-M RX	RSSI scan^²	Signal level –90 dBm^¹	RSSI <–105 dBm	Expected RSSI reading of average noise floor

¹ Sets RX gain.

² To test noise floor.