Rohde & Schwarz launches tester

Fiber Optics Weekly Update, Dec 31, 2004

Rohde & Schwarz has introduced the FSMR Measuring Receiver, the industry's first single-instrument solution for calibrating all key parameters of signal generators and fixed and variable attenuators. Unlike competitive solutions, it eliminates the need to cable together multiple, single-function instruments or a spectrum analyzer, power meter, and PC. The FSMR is an excellent choice for use by manufacturers with large numbers of signal generators or attenuators, as well as in military and commercial metrology laboratories.

Signal generators must be calibrated at regular intervals to maintain their rated accuracy for output level, carrier frequency, modulation depth, modulation frequency, and distortion. The FSMR provides the functions and precision required to perform signal generator and attenuator calibration without additional hardware or software. It combines a level calibrator, AM, FM, and PM modulation analyzers, an audio analyzer with THD and SINAD capability, RF power meter, and comprehensive spectrum analyzer functions in one instrument, and is available in frequency ranges from 20Hz to 3.5GHz, 26.5GHz, and 50GHz. Measurements include output level accuracy, carrier frequency accuracy, setting accuracy of modulation depth and deviation, weighted and unweighted spurious modulation, and modulation frequency response, distortion, and frequency. Key parameters are traceable to NIST and other national standards organizations.

The FSMR's spectrum analysis capabilities rival those of stand-alone instruments, and include detectors for RMS, peak (auto, maximum, and minimum), sample, average, and quasi-peak detection. Its resolution filter characteristics and bandwidth are the most versatile of any available spectrum analyzer. Resolution filters range from 10 Hz to 50 MHz and FFT filters from 1 Hz to 30 kHz. Standard EMI filters are 200 Hz, 9 kHz, and 120 kHz. Analysis functions include time-domain power, CCDF, noise/phase noise marker, standards-based channel and adjacent-channel power, and peak list marker for fast searches of all peaks within a given frequency range.