A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.