GAO Instruments has rolled out its PCM channel analyzer designed to measure PCM voice encoding or decoding characteristics. It is commonly used to analyze PCM devices, digital switches, carrier wave communication devices and VoIP devices. The portable PCM channel analyzer features touch operation, key-stroke operation, expanded mouse operation, flexible control modes and a convenient Windows style GUI. It also measures return loss, longitudinal conversion loss and longitudinal conversion transfer loss.
GAO Instruments’ PCM channel analyzer, model 2038, incorporates an analog signal generator/receiver, a selective level meter, a BER tester, a ring generator/identifier, a dialer, a DC loop circuit (ICT, OGT), a balanced bridge and a reflecting bridge into a single instrument. It supports equal step sequence of frequency spots or customized spots where the number of spots is selectable. The high performance PCM channel analyzer stores up to 100 groups of data, compares the measured results with built-in standard ITU-T tolerance masks and evaluates whether the results passed or failed. Users can develop and design voice channel measurement/control systems under various conditions by using remote control via USB or Ethernet interface. Test results can be uploaded to a computer where they can be further viewed, analyzed, assembled, filed and printed via included Test Manager Pro software; the embedded software is upgradable online.