The following table shows recommended test cases for radiated Narrowband Internet of Things (NB-IoT) non-signaling mode.
Mode | Test item | Test specification/ID | Expected result | Note |
---|---|---|---|---|
NB-IoT TX | LTE antenna efficiency and radiation pattern at TX frequencies | See nWP033 - nRF9160 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 GPS LNA input | Isolation >30 dB | Isolation from LTE antenna to the Global Positioning System (GPS) Low-Noise Amplifier (LNA) input at LTE TX frequency | ||
NB-IoT RX | LTE antenna efficiency and radiation pattern at RX frequencies | >50% | ||
RSSI scan2 | Signal level -90 dBm1 | RSSI < -112 dBm | Expected RSSI reading of average noise floor |