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GW Instek GSP-930 - GSP-9 - 3GHz Spectrum Analyzer

GSP-9 - 3GHz Spectrum Analyzer

GW Instek

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Category : Spectrum Analyzers

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GSP-930 is a 3GHz Spectrum Analyzer designed upon a new generation platform. The high stability, large screen display, light weight and compact size of GSP-930 benchmark a new standard for 3GHz spectrum analyzer in the market. Its advanced features, Spectrogram and Topography, greatly expand the application range and elevate the importance of a spectrum analyzer in the role as the irreplaceable RF analysis instrument.

GSP-930 provides a high frequency-stability of 25ppb (0.025ppm) and a very low noise floor of -142dBm (Pre-amplifier on) as the high sensibility measurement base. The flexible selection among 58 RBW ranges along with Spectrogram and Topographic features enable GSP-930 to capture and display transient, drifting and hopping signals in detail. The mixture of frequency domain information and time domain information facilitates the tracing of RF signal variations over time. Other remarkable features like Spectrum Emission Mask (SEM), Power Measurements, AM/FM Analysis and TOI/CNR/CSO/CTB measurements, make GSP-930 a useful instrument right fit into a broad range of applications.

The user friendly design of GSP-930 helps reduce user’s stress and anxiety in using a high-tech instrument. To help user easily get access to the regulations and definitions of the measurement terms under current operation, the built-in On-Screen-Help provides definition descriptionon the screen to guide user through measurement processes without checking into documents. The widely used Icons on the display clearly indicate the current setting and operation status of the product, allowing user to handle the measurement scenario all at a glance. The wake-up clock automatically turns on the power of GSP-930 at user’s pre-set time, which can be used to warm up the instrument in advance before the measurements are made to ensure the accuracy of measurement results. The Pass/Fail Limit function allows user to perform repetitive go/no-go measurements by template inspection instead of time-consuming value reading. The Sequence function provides an easy programming feature for user to edit and run measurement routines on GSP-930 screen without the need of a PC.

GSP-930 is equipped with various interfaces, including LXI, USB, RS-232 and GPIB (optional). The IVI driver is available for the remote control software development by means of LabVIEW or LabWindows/CVI. A Micro SD slot and a USB Host interface enable the memory size expansion for mass data storage. An IF output (886MHz) is provided as the intermediate frequency signal of RF inputfor users to develop their own applications. Carrying abundant communication interfaces, user-friendly operation, large screen display, light weight, compact size, and battery power operation(1), GSP-930 is developed upon a high-tech platform to provide ultimate customer benefits.

  • Frequency Range: 9kHz ~ 3GHz
  • High Frequency Stability: 25ppb (0.025ppm)
  • RBW: 10Hz ~ 10kHz in 1-3 steps, 10kHz ~ 1MHz in 10% adjustable steps
  • Phase Noise: -88dBc/Hz @1GHz, 10kHz Offset
  • Built-in Measurement Functions: Channel Power, N-dB bandwidth, OCBW, ACPR, SEM, TOI, CNR, CTB, CSO
  • Built-in Spectrogram and Topographic Display Modes
  • Gate Sweep Function
  • 1Hz Resolution Marker Counter
  • AM/FM Demodulation Analysis
  • 886MHz IF Output for User’s Extended Applications
  • Various Interface: USB Host/Device, RS-232, LXI, Micro SD, GPIB (Optional)
  • 8.4 large TFT LCD display with SVGA resolution of 800 *600
  • DVI-I Output for External Digital Display
  • Built-in Preamplifier, 50dB Attenuator, and Sequence Function
  • Optional 6GHz Power Sensor, Tracking Generator, Battery Back


  Range 9 kHz to 3.0 GHz  
Resolution 1 Hz  
Frequency Reference
  Accuracy ±[(period since last adjustment X aging rate) + stability over temperature + supply voltage stability
Aging Rage ±2 ppm max. 1 year after last adjustment
  Frequency Stability over Temperature ±0.025 ppm 0 to 50 °C
  Supply Voltage Stability ±0.02 ppm  
Frequency Readout Accuracy
  Start, Stop, Center, Marker ±(marker frequency indication X frequency reference accuracy + 10% x RBW +  frequency resolution1)
Sweep points 601 Span > 0
6 to 601 Span = 0
Marker Frequency Counter
  Resolution 1 Hz, 10 Hz, 100 Hz, 1 kHz
Accuracy ±(marker frequency indication X frequency reference accuracy + counter resolution)
RBW/Span >=0.02 ;
Mkr level to DNL>30 dB
Frequency Span
  Range 0 Hz (zero span), 100 Hz to 3 GHz  
  Resolution 1 Hz  
± frequency resolution1
Phase Noise
Offset from Carrier
Fc =1 GHz; RBW = 1 kHz, VBW = 10 Hz;Average ≥ 40
10 kHz
<-88 dBc/Hz
100 kHz
<-95 dBc/Hz
1 MHz
<-113 dBc/Hz
Resolution Bandwidth (RBW) Filter
  Filter Bandwidth 10 Hz to 3 kHz in 1-3-10 sequence
-3dB bandwidth
subtotal: 6 filters
10 kHz to 1 MHz, increment in 10% step
-3dB bandwidth;
min. RBW = 10 kHz @ zero span
Subtotal: 49 filters
200 Hz, 9 kHz, 120 kHz -6dB bandwidth
Accuracy ± 8%, RBW ≥ 750 kHz
± 5%, RBW < 750 kHz Nominal
Shape Factor < 4.5:1 Normal Bandwidth ratio: -60dB:-3dB
Video Bandwidth (VBW) Filter
  Filter Bandwidth 1 Hz to 1 MHz in 1-3-10 sequence -3dB bandwidth
[1] Frequency Resolution = Span/(Sweep points - 1)
[2] Typical specifications in this datasheet mean that the performance can be exhibited in 80% of the units with a 95% confidence level over the temperature range 20 to 30 °C. They are not covered by the product warranty.
[3] Nominal values indicate expected performance. They are not covered by the product warranty.
Amplitude Range
  Measurement Range 100 kHz to 1 MHz Displayed Average Noise Level (DANL) to 18 dBm
1 MHz to 10 MHz DANL to 21 dBm
10 MHz to 3 GHz DANL to 30 dBm
  Input Attenuator Range 0 to 50 dB, in 1 dB step Auto or manual setup
Maximum Safe Input Level
  Average Total Power £ +33 dBm Input attenuator 
≥10 dB
  DC Voltage ± 50 V  
1 dB Gain Compression
Total Power at 1st Mixer
> 0 dBm
Typical;Fc ≥50 MHz; preamp. off
Total Power at the Preamp
> -22 dBm
Typical;Fc ≥50 MHz; preamp. on
mixer power level (dBm)= input power (dBm)-attenuation (dB)
Displayed Average Noise Level (DANL)
  Preamp off 0 dB attenuation; RBW 10 Hz; VBW 10 Hz; span 500 Hz; reference level =  -60dBm; trace average ≥ 40
  9 kHz to 100 kHz < -93 dBm,
  100 kHz to 1 MHz < -90 dBm - 3 x (f/100 kHz) dB
  1 MHz to 10 MHz < -122 dBm
  10 MHz to 3 GHz < -122 dBm
  Preamp on 0 dB attenuation; RBW 10 Hz; VBW 10Hz; span 500 Hz;  reference level =  -60dBm; trace average ≥ 40
  100 kHz to 1 MHz < -108 dBm - 3 x (f/100 kHz) dB
  1 MHz to 10 MHz < -142 dBm
  10 MHz to 3 GHz < -145 dBm + 3 x (f/1 GHz) dB
Level Display Range
  Scales Log, Linear  
  Units dBm, dBmV, dBuV, V, W  
  Marker Level Readout 0.01 dB Log scale
    0.01 % of reference level Linear scale
  Level Display Modes Trace, Topographic, Spectrogram Single / split Windows
  Number of Traces 4  
  Detector Positive-peak, negative-peak, sample,  normal, RMS(not Video) Can be setup for each trace separately
  Trace Functions Clear & Write, Max/Min Hold, View, Blank, Average  
Absolute Amplitude Accuracy
Absolute Point
Center=160 MHz ; RBW 10 kHz; VBW 1 kHz; span 100 kHz; log scale;  1 dB/div; peak detector; 20 to 30°C; signal 0 dBm
Preamp off
± 0.3 dB
Ref level 0 dBm; 10 dB RF attenuation
Preamp on
± 0.4 dB
Ref level -30 dBm; 0 dB RF attenuation
Frequency Response
  Preamp off Attenuation: 10 dB; Reference: 160 MHz; 20 to 30°C
  100 kHz to 2.0 GHz ± 0.5 dB  
  2.0GHz to 3.0 GHz ± 0.7 dB  
  Preamp on Attenuation: 0 dB; Reference: 160 MHz; 20 to 30°C

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