Cable and service qualification occupies a great amount of time and effort. Testing for and uncovering transmission impairments or network problems is a necessary task during the installation or activation of new systems, when qualifying existing pairs for new services or troubleshooting and maintaining existing systems.

The CWT150 Transmission Impairment Tester is designed to test for line voltage and current, noise, balance, loss and slope, as well as providing comprehensive Caller ID and Call Waiting testing. The CWT150 is the only test set to do Caller ID Call Waiting (including ring time, silent time, alert-to-carrier time, mark and space dB, checksum, CAS tone dB, ACK tone dB, and OSI time).

The CWT150 is an ideal tool for uncovering noise and balance problems by simultaneously displaying metallic noise, noise to ground (power influence) and longitudinal balance.