RWC2020A is an interference generator being able to be used for the purpose of various tests or measurements, e.g. the Listen Before Talk(LBT) test, the Gateway Non-regression tests, the Intermodulation Immunity test and so on.
It can generate up to eight multi-tone signals with different output levels per each tone for the LBT test and two tones of up to 20MHz distant for the Intermodulation Immunity test.
It also can generate a single tone with phase noise of high performance for the Gateway Non-regression tests.
RWC2020A shall be connected to RWC5020B via RS-232C for control and setup of the full automation tests.
Listen Before Talk (LBT) is a technique that device enters RX mode and senses the interference signal level before it starts a transmission. It is used to prevent interference or collision between devices that use common frequency bands.
RWC2020A provides a perfect solution to verify LBT functionality of DUT, gateways or end-devices, as a supplementary equipment synchronized with RWC5020A.
It generates up to eight interference signals to occupy frequency bands. The interference signal level, the number of channels, and channel frequencies are editable through RWC5020B LoRaWAN tester GUI or PC software.
■ CW Interferer Immunity Test
The CW Interferer Immunity Test and Intermodulation Immunity Test which are ones of the Gateway Non-regression tests require CW interference signals with high performance phase noise.
RWC2020A generates a single-tone or dual-tone interference signal for those tests.
Range : 400MHz ~ 1000MHz
Resolution : 100Hz
Accuracy : ±2ppm/year@operating temperature
Range : -10dBm ~ -100dBm
Resolution : 0.1dB
Accuracy : ±1dB
Phase Noise (Single tone mode)
: -103dBc@1kHz / -110dBc@10kHz / -110dBc@100kHz / -138dBc@1MHz
VSWR : Better than 1:1.5
Impedance : 50Ω
Operating temperature : 5 ~ 40℃
Input : DC 12V, 3A
Dimension : 166(w) x 50(h) x 194(d) mm
Weight : 950g
■ The LBT test Function of RWC5020x PC Application
RWC5020x application provides LBT(listen before talk) test function. User can configure the all parameters of RWC2020A in LBT test function tab of PC application.
RWC2020A is controlled by RWC5020x through RS232 cable while LBT testing. The application collects all messages and result during LBT test and saves them as a doc file.
■ The Non-regression Test Function of RWC5020x PC Application
RWC2020A interference generator is mandatory for this test. While testing CW interferer immunity characteristics of non-regression test, this application lets RWC5020x transmit a LoRa signal as a wanted signal and RWC2020A transmit an unwanted tone as an interference signal. User can set frequencies and power of RWC2020A with this application.
This application collects all test result and shows a graphical test result while testing CW interferer immunity.