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. 111-2375
Mfr. Part No.RSA306B
BrandTektronix
HK$39,226.41
Each
units
40MHz - Live - - Centre + Span 6.2GHz 9 kHz ±20ppm LED 25.6cm Amplitude, Frequency, Signal Density SMA Connector -
RS Stock No. 826-2714
Mfr. Part No.58350-2440
BrandAim-TTi
HK$23,809.50
Each
units
300 Hz → 10 MHz - 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
HK$13,244.40
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. 826-2710
Mfr. Part No.58350-1240
BrandAim-TTi
HK$21,223.80
Each
units
300 Hz → 10 MHz - 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. 768-3447
Mfr. Part No.PSA1302
BrandAim-TTi
HK$10,576.80
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. 826-2708
Mfr. Part No.58350-2340
BrandAim-TTi
HK$17,959.50
Each
units
300 Hz → 10 MHz - Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 3.6GHz 10 MHz ±1ppm 10.9 cm Backlit TFT LCD 480 x 272pixel Dual BNC, SMA Connector, Standard N USB
RS Stock No. 206-699
Mfr. Part No.MTX1050-PC
BrandMetrix
HK$13,900.97
Each
units
- - - - - Zero Span 1GHz 400 kHz ±5ppm - - - - USB
RS Stock No. 787-7683
Mfr. Part No.PSA2702USC
BrandAim-TTi
HK$14,625.00
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. 826-2717
Mfr. Part No.58350-2540
BrandAim-TTi
HK$20,556.90
Each
units
300 Hz → 10 MHz - Live, Reference, View Continuous, Single - Centre + Span, Start + Stop 3.6GHz 10 MHz ±1ppm 10.9 cm Backlit TFT LCD 480 x 272pixel Dual BNC, SMA Connector, Standard N USB
RS Stock No. 712-3554
Mfr. Part No.MTX1054B-PC
BrandMetrix
HK$15,042.60
Each
units
150MHz 4 - - - - 1GHz - ±200ppm - - - - USB
RS Stock No. 123-6443
BrandRS PRO
HK$18,083.21
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
New
RS Stock No. 192-4587
Mfr. Part No.BK2682
HK$27,840.73
Each
units
3MHz - - Continuous, Single 2680 Span 2.1GHz 9 kHz <1ppm - 1024 x 600pixel - BNC -
New
RS Stock No. 195-3196
Mfr. Part No.N9320B
HK$73,845.20
Each
units
1MHz - - Continuous, Single - - 3GHz 100 kHz ±5ppm - 640 x 480pixel Frequency N-Type Female -
RS Stock No. 177-1297
Mfr. Part No.T3SA3100
HK$30,659.20
Each
units
9 kHz 2.1 GHz 1 - - T3SA3000 - 2.1GHz 9 kHz - WVGA 10.1in - - -
RS Stock No. 174-2924
Mfr. Part No.FPC-P3TG
HK$42,744.84
Each
units
5 kHz → 3 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 3GHz 5 kHz - WXGA 256.54mm Frequency N Connector RJ45, USB 2.0, 10/100BASE-T
RS Stock No. 144-8233
Mfr. Part No.FSC-P1
HK$66,512.16
Each
units
9 kHz → 3 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 3GHz 9 kHz - LCD - Frequency N Connector LAN, USB
New
RS Stock No. 192-4588
Mfr. Part No.BK2683
HK$40,444.98
Each
units
3MHz - - Continuous, Single 2680 Span 3.2GHz 9 kHz <1ppm - 1024 x 600pixel - BNC -
New
RS Stock No. 195-3197
Mfr. Part No.N9322C
HK$102,204.96
Each
units
1MHz 20 (Display) - Continuous, Single - - 7GHz 5 MHz - - 640 x 480pixel Frequency N-Type Female -
RS Stock No. 177-1298
Mfr. Part No.T3SA3200
HK$39,868.40
Each
units
9 kHz 3.2 GHz 1 - - T3SA3000 - 3.2GHz 9 kHz - WVGA 10.1in - - -
RS Stock No. 144-8236
Mfr. Part No.FSC-P4
HK$102,960.00
Each
units
9 kHz → 6 GHz 1 Average, Maximum Hold, Minimum Hold, View - - Span 6GHz 9 kHz - LCD - Frequency N Connector LAN, USB
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