PIM analyser

25 January 2012 Test & Measurement

Anritsu has introduced the MW8209A PIM Master, a passive intermodulation (PIM) analyser that covers the 900 MHz band to address the growing need to measure PIM in E-GSM networks, including UMTS Band VIII and LTE Band 8. Designed for use with Anritsu handheld analysers, the instrument comes with Anritsu’s Distance-to-PIM technology, a tool that can determine if the cause of PIM is at the base station or in the surrounding environment.

Field engineers and technicians can use the MW8209A to help ensure optimum performance of UMTS Band VIII and LTE Band 8 networks by locating PIM faults before intermodulation distortion adversely affects signal transmission.

Field personnel can use PIM Master to generate two high-power tones in the transmit band of a base station, and use any of the compatible handheld analysers to measure the 3rd, 5th or 7th order intermodulation products in the receive band that travel down the same cable. Using the GPS option available on all the analysers, the location of the measurement can be recorded, as well.

A beneficial feature of the MW8209A is its 40 W testing, compared to alternative methods that only measure at 20 W. Using double the power allows the PIM Master to locate intermittent failures due to light corrosion, high-traffic loading or changing weather conditions. It also permits users to find faults in a multicarrier antenna system or discover microscopic arcing in connectors.

Anritsu’s proprietary Distance-to-PIM helps field engineers, technicians and contractors pinpoint passive intermodulation faults, eliminating the unknown of whether the PIM source is from the antenna system or surrounding environment. Simple, immediate and accurate, Distance-to-PIM simultaneously informs the user of the distance and magnitude of all the PIM sources, both inside the antenna system and beyond the antenna. Historical data can be used to monitor a site and determine if corrections need to be made before a failure results in dropped or blocked calls.

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