Audio Analyzers PIM 20

Product catalog summary

Overview: The Pim 20 is a portable, microprocessor-controlled test set designed to detect Passive Intermodulation Distortion (PIM) in radio frequency systems, such as radio base stations and in-building DAS installations. It is particularly useful for field technicians to identify components causing PIM and degrading system performance.

Key Features:

Adjustable test frequencies to match application power requirements.
PIM sensitivity of -153 dBc at 850 MHz.
Self-calibrating and housed in a rugged, weather-proof case (IP55).
Simple operation, portable, and battery-operated.

Benefits:

Quick detection of nonlinear passive components, reducing maintenance costs.
Improves network quality and channel efficiency.

Applications:

Identifying poor PIM in outdoor base station antennas and in-building DAS.
Detecting broadband interference affecting antenna performance.
Locating discontinuities in coaxial assemblies.
Optimizing indoor antenna positions to avoid interference.

Field Features: The Pim 20 provides readings in three ways: numerically on an LCD, via an LCD bar graph, and a quick view LED bar graph. It includes a PIM threshold alarm and an audio frequency indicator for varying PIM levels.

Causes of PIM: PIM can result from design flaws, mechanical misalignments, environmental conditions, and the use of ferromagnetic materials. It is crucial to maintain low PIM levels for optimal RF system operation.

Testing Method: PIM testing involves injecting two CW signals into the system and measuring the intermodulation products, particularly the 3rd order (IM3). The Pim 20 uses a dual frequency measurement method suitable for components across 800 to 2200 MHz.

Specifications:

Single port reflection measurement with custom test frequencies.
Carrier power range: +20 to +33 dBm for cellular, +20 to +30 dBm for PCS.
PIM measurement range: -80 to -153 dBc at 850 MHz.
Automatic RF calibration and internal checks on power-up.
Weight: 17.6 lbs (8 kg), Dimensions: 13.5 x 12.9 x 6.0 inches.

Accessories: Includes a standard accessory kit with optional accessories like low PIM cable loads, connector adaptors, and test cables.

Ordering Information: The Pim 20 system includes two CW carrier frequencies, a measurement range of -80 to -150 dBc, and various accessories. Frequencies f1 and f2 must be specified by the customer.

Contact Information: Wireless Telecom Group Inc. has sales offices in the United States, United Kingdom, France, Germany, Singapore, and China.