The following table shows recommended test cases for conducted Narrowband Internet of Things (NB-IoT) non-signaling mode.
| Mode | Test item | 3GPP test ID | Band/Channel | Temp/Voltage | XRFTEST signal parameters | Expected result | Note |
|---|---|---|---|---|---|---|---|
| NB-IoT TX | Maximum output power | 6.2.2F | ALL/LMH | TYP/EXT | 15 kHz, QPSK, 12 SC, Pout +25 dBm | 21 dBm | Pmax, 21 dBm±2 dB (QPSK, 12 SC) |
| Frequency error | 6.5.1F | ALL/MID | TYP/TYP | <±0.1 ppm | Requires performing AFC correction. A supporting AT command is available in modem firmware v1.2.0 and later. | ||
| NPUSCH EVM (RMS) | 6.5.2F.1 | ALL/LMH | TYP/EXT | <6% | 3GPP limit <17.5% | ||
| Adjacent channel leakage power ratio | 6.6.2F.3 | >33 dB | E-UTRA ACLR±1 | ||||
| Spurious emissions (9 kHz to 12.75 GHz) | 6.6.3.1F.1 | ALL/MID | TYP/TYP | <-33 dBm/1 MHz | Harmonics, noise | ||
| NB-IoT RX | Reference sensitivity level | 7.3.1F | ALL/ALL | CW level -90 dBm1 | >21.5 dB SNR | Expected SNR at -90 dBm test signal (Carrier Wave (CW)) level | |
| RSSI scan2 | NA | RSSI <-111.5 dBm | Expected RSSI reading of average noise floor |