Introduction
The document is a technical data sheet for the R&S®FS-K15 VOR/ILS Measurement Demodulator, compatible with R&S®FSMR/FSU/FSQ instruments. It provides detailed specifications and operational guidelines for the device.

Specifications
The specifications are valid under specific conditions, including a 30-minute warm-up time, adherence to calibration cycles, and completion of internal automatic adjustments. The document outlines frequency ranges for ILS localizer, VOR, and MB, with specified ranges from 10 MHz to 12 MHz and 70 MHz to 120 MHz, and for ILS glideslope from 10 MHz to 12 MHz and 319 MHz to 341 MHz. Frequency counter resolution is 1 Hz with a count accuracy dependent on signal-to-noise ratio.

Level and Modulation Measurements
The level range is from -120 dBm to +30 dBm with a resolution of 0.01 dB. Modulation depth measurement has a resolution of 0.01% and varying accuracy depending on the signal type and input method. DDM measurement ranges are specified for both localizer and glideslope modes, with high resolution and accuracy.

VOR Signal Analysis
Includes input level range, AM modulation depth, and FM modulation deviation specifications. The document provides detailed accuracy and resolution metrics for these measurements.

Distortion Analysis
Measurement range is from -100 dB to 0 dB, with a resolution of 0.01% or 0.01 dB and an accuracy of 0.5 dB. Inherent harmonic distortion is specified for VOR signals.

Ordering Information
The document provides the order number for the VOR/ILS Measurement Demodulator: R&S®FS-K15, Order No. 1302.0936.02.

About Rohde & Schwarz
Rohde & Schwarz is a leading electronics company with a global presence, specializing in test and measurement, broadcasting, radiomonitoring, radiolocation, and secure communications. The company is headquartered in Munich, Germany, and operates a certified ISO 9001 quality system.

Environmental and Service Commitment
The company emphasizes energy-efficient products, environmental sustainability, and ISO 14001-certified environmental management. It offers worldwide, personalized, and flexible service with a focus on quality and long-term dependability.