Rohde & Schwarz FSP 3

The Rohde & Schwarz FSP 3 device driver is a Power Meter, Spectrum Analyser which is supported by RadiMation^®.  

Configuration

The following tabs are available in the advanced configuration of the Rohde & Schwarz FSP 3:

Pre Wait Time

Wait time before starting the measurement-loop. Can be used to wait for a signal generator, and or amplifier to stabilize.

Measure

The minimum amount of measurements in the measure loop. Continues to loop even if power level is stable.

Wait Time

The wait time between each measurement is taken, during the measurement-loop.

Max. Difference

If the measured power between each measurement in the measurement-loop, is less than this value. The measured power is stable. The measurement-loop will then stop.

Max. Measure

The maximum amount of measure times, for the measurement-loop

According to these settings, RadiMation^® will perform a minimum of 3 power measurements with a wait time between the measurements of 75ms. If all those 3 measurements are within 0.1 dB, the power measurement is assumed to be stable, and RadiMation^® will continue to average of the last 3 measurements. If the difference between the measurements is larger than the specified 0.1 dB, an additional power measurement will be performed, and the last 3 samples will be compared to the 0.1 dB difference again. At most 10 measurements will be performed if the difference between the 3 samples will not be within the specified 0.1 dB.

Both for the leveling, and the monitoring these settings can be set individually. The leveling is used, whenever RadiMation^® is measuring the power, to regulate the signal generator. If the powermeter is only used as input, without regulating on it, then the monitoring settings are used.

More detailed information on how to achieve a fast and stable power measurement is available in Application Note 106: Powermeter parameter configuration.

The frequency range of the Rohde & Schwarz FSP 3 as provided by the manufacturer is shown and selected as default. It is possible to overrule these frequencies and to manual adjust the allowed frequency range of the Rohde & Schwarz FSP 3.

Use default start frequency

If the checkbox is checked, the default start frequency will be used as the lowest usable frequency in a test for this device.

Custom start frequency

If the Use default start frequency checkbox is unchecked, another start frequency (expressed in MHz) can be specified. The customized start frequency will then be used as the lowest usable frequency in a test for this device. The customized frequency can be a limitation or an extension of the default start frequency.

Use default stop frequency

If the checkbox is checked, the default stop frequency will be used as the highest usable frequency in a test for this device.

Custom stop frequency

If the Use default stop frequency checkbox is unchecked, another stop frequency (expressed in MHz) can be specified. The customized stop frequency will then be used as the highest usable frequency in a test for this device. The customized frequency can be a limitation or an extension of the default stop frequency.

Specifying a different frequency range can be useful if for example:

• A device (like a coupler, antenna, injection device, cable, etc...) is still useable (but out of specification) outside the standard suggested frequency range.
• An external mixer is used to measure an extended frequency range.
• An up- or down-convertor is used to shift the frequency range.
• A newer model of a device is present that has an extended frequency range, and still uses the same remote control commands.

Be careful changing these setting as RadiMation^® is no longer able to verify if the Rohde & Schwarz FSP 3 is used outside frequency range that is specified by the manufacturer. This may result to serious damage of your measurement device.

The settings on the Reference tab influence the measurement frequency that is communicated to the measurement device. The frequency that is forwarded to the measurement device can for example be used by the device to perform the measurement on the correct frequency, or use the correct internal frequency dependant correction or calibration factor on the measurement result. Normally it is desired that the measurement frequency is the same as the carrier frequency of the signal generator. In some situations it can however be required to communicate a different frequency to the measurement device. In such a situation the settings on the Reference tab can be modified.

Signal generator frequency

Selects that the actual carrier frequency of the signal generator is communicated to the measurement device. This is the default behaviour.

Fixed reference frequency

Selects that a fixed frequency (independent of the signal generator carrier frequency) is communicated to the measurement device.

Signal generator frequency offset

An additional offset frequency specified in MHz, that is added to frequency that is communicated to the measurement device. This value can be positive or negative, and defaults to 0.0 MHz.

Specific reference frequency

The fixed reference frequency specified in MHz that is communicated to the measurement device, when the Fixed reference frequency option is selected.

Warning:

When a different reference frequency is specified and communicated to the measurement device, it is only relevant for the measurement device. A correction file that is attached to the device driver in RadiMation® will still use the correction value that is specified for the actual signal generator carrier frequency.

 

Configuration

The following tabs are available in the advanced configuration of the Rohde & Schwarz FSP 3:

The frequency range of the Rohde & Schwarz FSP 3 as provided by the manufacturer is shown and selected as default. It is possible to overrule these frequencies and to manual adjust the allowed frequency range of the Rohde & Schwarz FSP 3.

Use default start frequency

If the checkbox is checked, the default start frequency will be used as the lowest usable frequency in a test for this device.

Custom start frequency

If the Use default start frequency checkbox is unchecked, another start frequency (expressed in MHz) can be specified. The customized start frequency will then be used as the lowest usable frequency in a test for this device. The customized frequency can be a limitation or an extension of the default start frequency.

Use default stop frequency

If the checkbox is checked, the default stop frequency will be used as the highest usable frequency in a test for this device.

Custom stop frequency

If the Use default stop frequency checkbox is unchecked, another stop frequency (expressed in MHz) can be specified. The customized stop frequency will then be used as the highest usable frequency in a test for this device. The customized frequency can be a limitation or an extension of the default stop frequency.

Specifying a different frequency range can be useful if for example:

• A device (like a coupler, antenna, injection device, cable, etc...) is still useable (but out of specification) outside the standard suggested frequency range.
• An external mixer is used to measure an extended frequency range.
• An up- or down-convertor is used to shift the frequency range.
• A newer model of a device is present that has an extended frequency range, and still uses the same remote control commands.

Be careful changing these setting as RadiMation^® is no longer able to verify if the Rohde & Schwarz FSP 3 is used outside frequency range that is specified by the manufacturer. This may result to serious damage of your measurement device.

The FSP is a Spectrum analyser of Rohde & Schwarz.

The FSP is a simplified version of the ESIB and ESPI receivers. It has the same limitations as the ESPI, but it is also missing the 'Receiver' mode. This can however be depending on some optional modules.

The 2.80 embedded software series are NT 4 based, the 3.80 embedded software series are XP based

Documentation

• The user manual can be found here
• The programmer manual can be found here
• The release note for devices with XP as operating system can be found here
• The release note for devices with NT as operating system can be found here
• The release note for devices with NT Sp3 operating system can be found here
• Manual for the NT version can be found here and here
• The update for NT 2.80 SP3 can be downloaded here

Tips and tricks

The NT kernel version turns the display off when getting a *RST.

To turn it on again: SYSTEM:DISPLAY:UPDATE ON

reason for turning the display off is the performance hit given by the display.

The following tests has been performed on a R&S FSP30 to verify the functionality of the device driver

URL: http://www.rohde-schwarz.com/en/product/fsp-productstartpage_63493-8043.html

Performed Tests

General

• Model: Rohde & Schwarz FSP 30, 9kHz ... 30GHz
• Firmware version: 4.50 SP4, BIOS Rev. V3.0-10-2
• Preamplifier: not tested, option (B22) was not included
• Tracking generator: not tested, option was not included
• Communication over GPIB: Ok
• Test date: 2013 february 8th

Analyser mode

• RBW: Ok (tested: 1000 Hz, 3kHz, 9 kHz, 10 kHz, 100kHz, 120 kHz, 300 kHz, 1 Mhz)
• Reference Level: Ok
• Attenuator: Ok (tested: 0, 10, 20, 30, 40, 50, 60, 70 dB)
• Sweeptime: Ok (tested: 1000 us, 5 ms, 10 ms, 20 ms, 50 ms, 100 ms, 200 ms, 500 ms, 1000 ms)
• VBW: Ok (tested: 1000 Hz, 3kHz, 9 kHz, 10 kHz, 100kHz, 120 kHz, 300 kHz, 1 Mhz)
• Initial scans: Ok (tested: Peak, Peak + Average, Peak + Average + RMS, Peak + Average + RMS + QP)
• Final Measurement Peak Detector: Ok
• Final Measurement QP Detector: Ok
• Final Measurement AVG Detector: Ok
• Final Measurement RMS Detector: Ok

Links

• website

Decibel

General Purpose Industrial Bus: A communication system used to 'remote control' test and measurement equipment.

Resolution BandWidth

Video BandWidth

Root Mean Square

Quasi-Peak