The MD8391A performs AAL2 setting from the Node-B lub side; cell setup is performed using a transmission signal meeting the 3GPP test item requirements by using the NBAP control protocol. Each Tx RF test measurement is performed by the MS8609A Digital Mobile Radio Transmitter Tester.

Combining the MD8391A with the MG3700A Vector Signal Generator supports testing of Node-B Rx characteristics. The MD8391A sets the Node-B cell setup and receiver channel from the Iub side. The uplink reference measurement channel (RMC) signal output from the MG3700A is input to Node B. The PN pattern of the RMC signal demodulated and decoded by Node B is received via the Iub interface to measure the BER, permitting reference sensitivity level tests conforming to 3GPP TS25.141 standards. The MD8391A TE function supports the U-plane data test. The MD8391A has the performance for evaluating user data of 3G/3.5G W-CDMA systems, making it ideal for integration tests at final production-line inspection.