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• 9 kHz to 3 GHz frequency range
• Tracking Generator (9kHz to 3GHz)
• Dynamic range: >137 dB
• Noise level: typically -120 dBm (300 Hz RBW)
• Resolution bandwidth 200 Hz to 20 MHz
• Frequency counter with 1 Hz resolution
• Maximum input level +33 dBm
• Electronic attenuator with 2 dB steps
• Level uncertainty: <1.5 dB
• Measurement functions: signal tracking, TOI measurement, marker and delta markers, noise markers, signal bandwidth, OBW, return loss,
  transmission channel power
• AM/FM Audio Demodulation
• Stores up to 10 set-ups and 5 traces
• Remote control via USB interface
• Small size - 220 x 148 x 350 mm, 7 kg

    Colour Brochure with full specs.  

Unbeatable value-for-money

The Rohde and Schwarz FS315 is a highly accurate spectrum analyzer with a frequency range of 9 kHz to 3 GHz.

It differs from the FS300 by having a built-in Tracking Generator.  It also includes extra measurement functions, extended RBWs, and AM/FM demodulation.

High-quality measurement characteristics

Since the displayed average noise level is typically -120 dBm (300 Hz), even weak signals can be reliably detected. This is important for the measurement of spurious and harmonics. Within the intermodulation-free dynamic range of the Rohde and Schwarz FS315 no inherent distortions occur, which could interfere with the measurement.

This is especially useful when a high dynamic range is required, i.e. high and low levels are to be measured simultaneously. Points in the measurement trace are displayed with a level uncertainty of <1.5 dB. This value is unrivalled in this price class and an essential prerequisite for high measurement accuracy.

Resolution Bandwidth from 200 Hz to 20 MHz

With 21 different digitally implemented resolution bandwidths starting at 200 Hz, the R&S FS315 can be optimally adapted to different measurement tasks. Large bandwidths for overall measurements ensure short sweep times while small bandwidths provide high frequency resolution and low noise level. The R&S FS315 fulfils every requirement in between.

Frequency counter with 1 Hz resolution

With the aid of the built-in frequency counter, the signal frequency can be measured with 1 Hz resolution in the entire frequency range. An additional frequency counter is therefore not required which saves space on the lab bench.

Maximum input level +33 dBm

The maximum input level of the R&S FS315 permits signals to be measured far beyond the common limits. Mobile phones with a maximum output power of 2W can be directly connected to the spectrum analyzer without external attenuators being required.

Multiple measurement functions

The R&S FS315 offers a number of measurement and marker functions to support signal analysis. Two normal or one normal and one delta marker are provided for determining the signal level.

The normal marker may be positioned as a reference marker on the fundamental, for instance, while the delta marker is positioned on a harmonic. The difference between the two levels represents the harmonic suppression.

The normal or delta markers can also be used as noise markers for measuring the noise power density. The n dB bandwidth of a signal, e.g. the 3 dB or 6 dB bandwidth, can also be easily measured with the R&S FS315.

New automatic measurements over and above the FS300 include occupied bandwidth (OBW), return loss and transmission channel power.

AM and FM audio demodulation

The FS315 include demodulation for both AM and FM signals with audio output on the rear panel.

Tracking Generator

The FS315 with built-in tracking generator is the perfect solution for cost-efficient testing of the transmission behaviour of filters, cables, amplifiers and so forth.

Equipped with an additional VSWR bridge, reflection measurements can also be performed. Entering any frequency offset between 0 Hz and 3 GHz allows measurements on frequency-converting DUTs.

With simple applications, the tracking generator can be used as a signal generator with a permanently set frequency.

Remote control via USB

Another new feature of the R&S FS315 is the USB remote-control interface. The user can select external PC control even during instrument operation by means of "hot plug and play" simply by establishing a USB connection.

This is the first time that lab test equipment can be remote-controlled via USB without any restrictions. With the aid of the USB cable, the R&S FS315 can be operated even at positions which are difficult to access, such as in a shielded chamber.

A Windows 2000/XP compatible driver for different development environments is provided together with the R&S FS315. A PC software package is also available for remote control of the R&S FS315 and for result display and recording.

Compact Package

The R&S FS315 is notable for its compact and robust design. Whether on the bench or in the rack, it takes up a minimum of space. Two series instruments can even be accommodated next to each other in a 19-inch rack.

The new, adjustable handle fulfills several functions. It serves for carrying the R&S FS315. It can be moved and locked in almost any desired position. With the aid of the handle, the instrument can be set up in a tilted position so that an optimum viewing angle can be obtained for the display. If the handle is in the way, it can easily be put away so that several R&S FS315 can be stacked, for instance.

High picture refresh rate

The high refresh rate of up to 10 pictures per second ensures smooth display of measurement results. Changes of parameters during module adjustment are thus rapidly displayed which saves time in development and production.

Ergonomic user interface & display

Operation is menu-guided so that even untrained users will quickly obtain correct measurement results. Clear structures simplify navigation within the menus.

 Users familiar with spectrum analyzers from Rohde & Schwarz will quickly find the menu items they know from other Rohde & Schwarz instruments.

The bright TFT color display with 320x240 pixel resolution allows traces to be read even at an angle or with high background lighting.

Internal memory for settings and traces

Up to five traces and ten settings can be stored in the internal memory of the R&S FS315. Frequently used settings can be easily called up and the same parameter need not be set over and over again. This also prevents setting errors. Stored traces can be printed for easy documentation.