Spectrum Analysers

Spectrum analysers are widely used within the electronics industry for analysing the frequency spectrum of radio frequency, RF and audio signals. Looking at the spectrum of a signal they are able to reveal elements of the signal, and the performance of the circuit producing them. They are able to make a large variety of measurements and this means that they are an invaluable tool for the RF design development and test laboratories, as well as having many applications for specialist field service.


Spectrum analysers are an invaluable item of electronic test equipment used in the design, test and maintenance of radio frequency circuitry and equipment. They are used for observing signals in the frequency domain. Thus a spectrum analyser will display the amplitude of signals on the vertical scale, and the frequency of the signals on the horizontal scale.


Types of Spectrum Analysers


Swept spectrum analysers: Sweeping the frequency that is analysed across the required band to produce a view of the signals with their relative strengths. Type that is most widely used.


Fast Fourier Transform, FFT analysers: Converting the signals into a digital format for analysis digitally. More expensive and specialised.


Real-time analysers: Form of FFT analyser. Requiring much larger buffers and more powerful processing, these types are able to offer the top performance in signal analysis.


Audio spectrum analyser: Focussed on audio frequencies, this means that low frequency techniques can be adopted. This makes them much cheaper. It is even possible to run them on PCs with a relatively small amount of hardware.


Spectrum analysers tend to fall into 4 form factors:


  • Benchtop - can be plugged into AC power, which generally means in a lab environment or production/manufacturing area.
  • Portable – can be taken outside to make measurements or simply carried while in use.
  • Handheld - needs to be very light and small.
  • Networked - ability to connect the analyser to a network

Spectrum Analyser Tips


  • Beware input level: One major cause of damage is the input mixer being blown when the analyser is measuring high power circuits.
  • Determine if spurs are real
  • Wait for self-alignment: When first switched on, it goes through its software boot-up procedure and, undertakes a number of self-test and calibration routines.

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Description Price Bandwidth Number of Channels Wave Traces Sweep Modes Series Setting Modes Maximum Frequency Minimum Frequency Frequency Stability Display Type Screen Size Markers RF Input Interface Type
RS Stock No. 123-3568
BrandRS PRO
kr 8 713,78
Each
Units
150 kHz → 3 GHz - - Continuous - Full Span, Last Span, Zero Span 3GHz 150 kHz - TFT LCD 5.6in Amplitude, Frequency N Connector 15-Pin Female D-Sub Connector, 9-Pin Female D-Sub Connector, RS232, USB
RS Stock No. 123-6443
BrandRS PRO
kr 19 770,00
Each
Units
9 kHz → 2.1GHz 1 Reference Continuous, Single - Span, Zero Span 2.1GHz 9 kHz <0.5 (First Year)ppm TFT LCD - Single BNC RJ45, USB-A 2.0, USB-B 2.0
RS Stock No. 180-4795
BrandRS PRO
kr 37 444,33
Each
Units
9 kHz → 3 GHz - Average, Average (EMI), Blank, Clear & Write, Maximum Hold, Minimum Hold, Quasi-Peak (EMI), View Continuous, Single - Zero Span + Time Domain 3GHz 9 kHz 0.025ppm Built-in Spectrogram, Dual-View Display, Topographic - Frequency N-Type Female GPIB, LAN, MicroSD, RS232, USB
RS Stock No. 123-6444
BrandRS PRO
kr 36 465,00
Each
Units
9 kHz → 3.2GHz 1 Reference Continuous, Single - Span, Zero Span 3.2GHz 9 kHz <0.5 (First Year)ppm TFT LCD - Single N-Type Female RJ45, USB-A 2.0, USB-B 2.0
RS Stock No. 180-4796
BrandRS PRO
kr 44 274,78
Each
Units
9 kHz → 3 GHz - Average, Average (EMI), Blank, Clear & Write, Maximum Hold, Minimum Hold, Quasi-Peak (EMI), View Continuous, Single - Zero Span + Time Domain 3GHz 9 kHz 0.025ppm Built-in Spectrogram, Dual-View Display, Topographic - Frequency N-Type Female GPIB, LAN, MicroSD, RS232, USB
RS Stock No. 787-7683
Mfr. Part No.PSA2702USC
BrandAim-TTi
kr 15 413,62
Each
Units
30 MHz → 1.8 GHz 1 Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 2.7GHz 1 MHz ±10ppm 4.3 in TFT 480 x 272pixel Dual, Single SMA Connector USB
RS Stock No. 768-3447
Mfr. Part No.PSA1302
BrandAim-TTi
kr 11 136,49
Each
Units
1.3GHz 1 Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 1.3GHz 1 MHz ±10ppm 4.3 in TFT 480 x 272pixel Dual, None, Single SMA Connector -
RS Stock No. 712-3554
Mfr. Part No.MTX1054B-PC
BrandMetrix
kr 12 487,00
Each
Units
150MHz 4 - - - - 1GHz - ±200ppm - - - - USB
RS Stock No. 826-2714
Mfr. Part No.58350-2440
BrandAim-TTi
kr 22 352,74
Each
Units
10 MHz → 6 GHz - Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 6GHz 10 MHz ±1ppm 10.9 cm Backlit TFT LCD 480 x 272pixel Dual BNC, SMA Connector, Standard N USB
RS Stock No. 768-3444
Mfr. Part No.PSA2702
BrandAim-TTi
kr 13 948,03
Each
Units
2.7GHz 1 Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 2.7GHz 1 MHz ±10ppm 4.3 in TFT 480 x 272pixel Dual, None, Single SMA Connector -
RS Stock No. 787-7674
Mfr. Part No.PSA1302USC
BrandAim-TTi
kr 13 299,98
Each
Units
30 MHz → 1.8 GHz 1 Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 1.3GHz 1 MHz ±10ppm 4.3 in TFT 480 x 272pixel Dual, Single SMA Connector USB
RS Stock No. 826-2710
Mfr. Part No.58350-1240
BrandAim-TTi
kr 22 352,74
Each
Units
10 MHz → 6 GHz - Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 6GHz 10 MHz ±1ppm 10.9 cm Backlit TFT LCD 480 x 272pixel Dual BNC, SMA Connector, Standard N USB
RS Stock No. 192-4587
Mfr. Part No.BK2682
kr 27 800,00
Each
Units
9 KHz → 2.1 GHz - - Continuous, Single 2680 Span 2.1GHz 9 kHz <1ppm - 1024 x 600pixel - BNC -
RS Stock No. 174-2987
Mfr. Part No.FPL1003-P4
kr 150 360,00
Each
Units
5 kHz → 3 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 3GHz 5 kHz - TFT 210mm Frequency N Connector 10/100BASE-T, GPIB, RJ45, USB 2.0
RS Stock No. 187-3725
Mfr. Part No.FPC-COM2
kr 46 200,00
Each
Units
5 kHz → 3 GHz 1 - - R&SFPC Span 3GHz 5 kHz - WXGA 10.1in Frequency N Connector -
RS Stock No. 144-8212
Mfr. Part No.FPC-P3
kr 33 705,00
Each
Units
5 kHz → 3 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 3GHz 5 kHz - LCD - Frequency N Connector USB
RS Stock No. 195-3197
Mfr. Part No.N9322C
kr 104 565,36
Each
Units
9 kHz → 7 GHz 20 (Display) - Continuous, Single - - 7GHz 5 MHz - - 640 x 480pixel Frequency N-Type Female -
RS Stock No. 174-2981
Mfr. Part No.FPL1003-P1
kr 103 530,00
Each
Units
5 kHz → 3 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 3GHz 5 kHz - TFT 210mm Frequency N Connector 10/100BASE-T, GPIB, RJ45, USB 2.0
RS Stock No. 187-3723
Mfr. Part No.FPC-COM1
kr 32 025,00
Each
Units
5 kHz → 3 GHz 1 - - R&SFPC Span 3GHz 5 kHz - WXGA 10.1in Frequency N Connector -
RS Stock No. 144-8211
Mfr. Part No.FPC-P2
kr 24 885,00
Each
Units
5 kHz → 2 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 2GHz 5 kHz - LCD - Frequency N Connector USB
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