S3531 Series Spectrum Analyzer

Saluki S3531 series RF spectrum analyzer is designed based on the concept “Smaller, lighter, easier” . S3531 series takes a small desktop space and easy to carry. Most of nowaday RF applications are in this band, like mobile communication (GSM, CDMA, LTE even low frequency 5G), WIFI (2.4GHz), remote control etc, so S3531 series is a good tool for the test, maintenance, R&D of these applications. Tracking source and CW source provide ability to do complex measurements. For so many functions integrated in one box, S3531 series also very fits for eduction.

Key Features

Frequency range from 9kHz to 1.8GHz/ 3.0GHz

Resolution bandwidth: 1Hz - 3MHz

High sensitive, best DANL <-158 dBm

Standard 1.8GHz/ 3.0GHz tracking source, and pre-amplifier

Standard FFT 1Hz resolution bandwidth function

Low weight <3.5kg, small size

  • Benchtop Spectrum Analyzer, 9 kHz to 3 GHz

    S3531 is an economic spectrum analyzer for 3 GHz span. It has good specification and multiple functions within a good looking small box.


    S3531 series has 2 modules to choose.

    •  9 kHz to 1.8 GHz

    •  9 kHz to 3.0 GHz


    S3531 series can be used in different measurement scenes:

    •  Spectrum analysis transmitter test

    •  Mobile applications, RF/ Microwave communication

    •  RF/ Electronic product R&D, manufacture, test and maintenance

    •  Education


  • Small and Portable, Flexible Communication Ports

    S3531 series spectrum analyzer is equipped 8-inch high brightness LCD screen. It is one mini size module for benchtop instrument.


    S3531 series has standard built-in tracking source 1.5 GHz or 3.2 GHz for different module. And it also provides a variety of optional accessories, including directional antenna, omnidirectional antenna, near field probe kit, SWR bridge, USB power sensor etc.
  • Great Technical Specifications

    •  Frequency range: cover from 9 kHz to 3 GHz


    •  Typical displayed average noise level: (full span) < -150dBm for S3531A, < -148dBm for S3531B


    •  Good phase noise performance: <-100dBc/Hz@100kHz frequency offset @ 500MHz carrier


    •  Standard tracking source: frequency range from 100kHz to 1.5 GHz/ 3.2 GHz, output power from -30dBm to 0dBm


    •  Resolution bandwidth: 1 Hz – 3 MHz

  • A Variety of Measurement Function Modes

    •  Adjacent-channel power ratio (ACPR)

    •  Spectrogram

    •  Analog demodulation

    •  Multi trace

    •  Channel power

    •  OBW

    •  Marker Table

    •  Limit line (pass/fail)

    •  Field strength

  • Three Years Warranty, Local Service

    3 Years Warranty
    Saluki S3531 series spectrum analyzer enjoys a 3 years warranty.


    Local Distributors, Local Service

    Saluki has distributors and partners all around the world. All our partners will provide you with local service.


    Support Team at Your Service

    Contact us any time and all your problems will be replied to within 24h.


    Pay Less and Get More

    Saluki provides you with good spectrum analyzers at an affordable price.

Frequency Range

S3531A: 9 kHz to 1.8 GHz,
S3531B: 9 kHz to 3 GHz

Tuning Resolution

1 Hz

RBW Range

1 Hz – 3 MHz

VBW Range

10 Hz – 3 MHz

Displayed Average Noise Level (Preamplifier On)

• 100kHz – 1MHz: <-120dBm-3×(f/100kHz) dB
• 1MHz – 10MHz: <-150dBm
• 10MHz – 1GHz: <-155dBm
• 1GHz – 1.8GHz: <-153dBm
• 100kHz – 1MHz: <-120dBm-3×(f/100kHz) dB
• 1MHz – 10MHz: <-150dBm
• 10MHz – 1GHz: <-155dBm
• 1GHz – 3GHz: <-148dBm
(0dB attenuation, RBW=1 Hz)

Displayed Average Noise Level (Preamplifier Off)

• 100kHz – 1MHz: <-100dBm-3×(f/100kHz) dB
• 1MHz – 10MHz: <-130dBm
• 10MHz – 1GHz: <-135dBm
• 1GHz – 1.8GHz: <-134dBm
• 100kHz – 1MHz: <-100dBm-3×(f/100kHz) dB
• 1MHz – 10MHz: <-130dBm
• 10MHz – 1GHz: <-135dBm
• 1GHz – 3GHz: <-130dBm
(0dB attenuation, RBW=1 Hz)

SSB Phase Noise

≤-90 dBc/Hz @ 30kHz offset

≤-100 dBc/Hz @ 100kHz offset

≤-115 dBc/Hz @ 1MHz offset

(CF=500 MHz, RBW=1 kHz)

Max. Safe Input Level (CW input)

S3531A: +23dBm

S3531B: +27dBm

Input Attenuator Range

S3531A:0 – 39 dB, steps of 3 dB

S3531B:0 – 30 dB, steps of 1 dB

TOI (>30MHz)


SHI (>10MHz)


Input Related Spurious (>10MHz)


Inherent Residual Response (>10MHz)



Test Port

Type-N female (50Ω)

Communication Port

USB 2.0, LAN

Reference Input/ Output

10MHz: Input level 0dBm to +10dBm,

BNC female: Output level 0dBm±2dB

Trigger Input Port

BNC female


8 inch TFT LCD (resolution 800*480)


335 (H) × 162 (W) × 116 (D)mm



Main Machine

Module No. Item Description
S3531A Spectrum Analyzer 9 kHz to 1.8 GHz
S3531B Spectrum Analyzer 9 kHz to 3.0 GHz


Module No. Item Description
S3531-01 Field Strength Measurement /
S3531-02 Near Field Probe Kit /
S3531-03 Frequency Identity Module /
S3531-04 Directional Antenna Frequency range: 600MHz - 8GHz
S3531-05 Omnidirectioanl Antenna Frequency range: 300MHz - 7.5GHz
S3531-06 SWR Bridge Frequency range: 10MHz - 3.6GHz
S3531-07 USB Power Sensor Frequency range: 10MHz - 6GHz
S3531-08 RF Demonstration Kit /
Saluki Technology