Anritsu Company introduces its first generation high performance PIM testing solution, the MW8219A, for the 1900/2100 MHz PCS/AWS frequency bands. Anritsu has developed the PIM Master to verify if receiver interference at a cell site is due to an intermodulation product of two or more transmit frequencies, also known as passive intermodulation (PIM).
The Anritsu PIM Master features patented technology – Distance-to-PIM™. In just a few seconds, Distance-to-PIM can find the distance and relative magnitude of all static PIM sources in an antenna system and beyond the antenna. Only Distance-to-PIM can find the location of:
- Dirty connectors
- Corroded connectors
- Over torqued connectors
- Microscopic arcing connectors
- PIM outside the antenna system
PIM is power sensitive, and today there is more power than ever going up the tower. PIM Master features 2 x 40 Watts of RF power to activate the PIM, making it more visible to find the PIM that cannot be found on traditional 20 Watt PIM testers.
When you have to find PIM, and find it fast, the Anritsu PIM Master is your best solution with 40 Watts of power and patented Distance-to-PIM.
PIM is a form of intermodulation distortion that occurs in passive components normally thought of as linear, such as filters, combiners, surge protectors, cables, connectors, and antennas. However, when subject to the high RF powers found in cellular systems, these devices can generate spurious signals.
PIM shows up as a set of unwanted signals created by the mixing of two or more strong RF signals in a non-linear device, such as in a loose or corroded connector, or in nearby rust. Other names for PIM include the "diode effect" and the "rusty bolt effect".
Many symptoms could be indicators of PIM problems. These include:
- Receiver desensitization (raised noise floor)
- Rx Diversity alarms
- Spectral re-growth in the transmitter mask
- Excessive dropped/blocked calls
- Cell site coverage shrinking
- Complaints of interference from neighboring cell site owners
United Kingdom
