R3261B - Advantest Spectrum Analyzers

The Advantest R3261B spectrum analyzer is a wide band, very sensitive receiver. It works on the principle of "super-heterodyne receiver" to convert higher frequencies (normally ranging up to several 10s of GHz) to measurable quantities. The received frequency spectrum is slowly swept through a range of pre-selected frequencies, converting the selected frequency to a measurable DC level (usually logarithmic scale), and displaying the same on the CRT of the Advantest R3261B.

The CRT displays received signal strength (y-axis) against frequency ( x-axis). Some applications for Advantest R3261B Spectrum Analyzers include Site Monitoring: Verify that the frequency and signal strength of your transmitter is accurate. Interference: Before a system is installed you use a Advantest R3261B spectrum analyzer to verify that the frequencies (you plan to use) are not occupied or if the presence of a very strong signal will interfere with your new setup. Interference can be created by a number of different situations. Other tests that utilize the Advantest R3261B spectrum analyzer features include antenna isolation, co-channel interference, adjacent channel power, occupied bandwidth, intermodulation, microwave or satellite antenna alignment, and characterization of components.

• User-defined function
• Measuring window function
• Built-in Tracking generator
• 120 db Display range
• Minimum Frequency 9 kHz
• Maximum Frequency 3.6 GHz
• Minimum Sweep Time 50 ms
• Maximum Sweep Time 1000 s
• Minimum Resolution Bandwidth 30 Hz
• Maximum Resolution Bandwidth 1 MHz
• Resolution Bandwidth Steps 1/3/10
• Minimum Single-Side-Band Noise -105 dBc/Hz
• Maximum Single-Side-Band Noise -101 dBc/Hz