Patent ID: 7019550
Filing Date: 2006-03-28
Classification: G01R

Abstract:
1. A method comprising: providing a device under test (DUT) having an input port and an output port, the DUT also having a squelch detector coupled to receive a signal from the input port and a receiver amplifier coupled to receive a signal from the input port, the DUT also having a transmitter to transmit data signals from the output port; providing a loopback connection from the output port to the input port; controlling the transmitter to transmit a test signal from the output port to the input port; and monitoring at least one of an output of the receiver amplifier and an output of the squelch detector to determine whether a leakage condition exists in the DUT; wherein: the DUT includes a first timer coupled to the output of the squelch detector and a second timer coupled to the output of the receiver amplifier; and the monitoring includes monitoring both the output of the receiver amplifier and the output of the squelch detector and includes monitoring respective conditions of the first and second timers.