Electro-Metrics ALR-30 Active Loop Antenna

The Electro-Metrics ALR-30 is a passive loop antenna designed for magnetic field measurements within the frequency range of 9 kHz to 30 MHz. It is intended for electromagnetic interference (EMI) testing and signal analysis, particularly for radiated emissions. The ALR-30 can be used with a 50-ohm receiver/analyzer, such as the Electro-Metrics EMC-30, and is calibrated to operate within a 50-ohm system. Technical Specifications * Model: ALR-30 (also referred to as ALR-30M)

• Type: Passive Magnetic Loop Antenna
• Frequency Range (Calibrated): 9 kHz to 30 MHz
• Magnetic Field Measurement: Sensitive only to the magnetic component (H-Field) of the electromagnetic field due to electrostatic shielding.
• Input Impedance: Matched to 50Ω
• Connector Type: TNC
• Matching Networks: Features ten passive matching circuits, selectable via a ten-position rotary switch, to optimize performance across the frequency range.
• Calibration Signal Input: Equipped with an "Injection In" connector (Type TNC) to allow an external calibration signal to be applied, as required by certain test standards.
• Mounting: Includes a 5/8-20 threaded receptacle on the base for mounting to a tripod, such as the Electro-Metrics Model TRI-136. Electrical Characteristics * The ALR-30 transforms magnetic field components using its internal matching circuits.
• Antenna factor charts are furnished with each antenna, which are necessary for converting receiver readings to field strength values, particularly for broadband signals.
• The antenna can be oriented for maximum sensitivity when perpendicular to the H-Field, with curves valid when oriented for maximum sensitivity in both azimuth and elevation. Mechanical Specifications * Loop Diameter (Approximate): 0.4 meter (17 inches)
• Outside Diameter: 432 mm (17 inches)
• Height: 508 mm (20 inches)
• Weight: 3.5 kg (7.5 lbs)
• Construction: Electrostatically shielded loop mounted on a rectangular base containing matching networks. Compatibility * Designed for use with 50-ohm receivers/analyzers, including the Electro-Metrics EMC-30 or equivalent.
• Can be used with the Electro-Metrics SU-30 Antenna Switching Unit for computer-controlled EMI test systems. Why Choose Aumictech for Electro-Metrics ALR-30? At Aumictech, we specialize in supplying high-end electromagnetic compatibility (EMC) testing equipment. Whether you need precise magnetic field measurements for EMI compliance, reliable signal analysis in the 9 kHz to 30 MHz range, or solid performance for laboratory and field applications, our team ensures the Electro-Metrics ALR-30 delivers maximum performance for your application.