The latest test equipment coming from RedwoodComm includes an interference generator for Listen Before Talk (LBT) features for LoRaWAN. LBT is important to provide reliable communication links between devices and prevent collisions and interference from devices communicating in the same frequency bands. In general, devices will enter an Rx mode to determine if signals are present before trying to communicate on channels.
The RWC2020A allows for testing of LBT by generating up to eight interfering CW signals with high spectral quality. In addition, two tones of up 20-MHz separation can be generated for intermodulation immunity testing. Frequency coverage is available from 400 to 1000 MHz with a resolution of 100 Hz. Furthermore, output level can be varied from −100 to −10 dBm with ±1 dB of accuracy. Single-tone phase noise is listed as: −103 dBc @ 1 kHz; −110 dBc @ 10 kHz; −110 dBc @ 100 kHz; and −138 dBc @ 1 MHz.
RedwoodComm, #14008, Section, SK M-City Tower, 195, Baengma-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, Korea; phone: +82-70-7727-7011