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GSP-9300B - 3GHz Spectrum Analyzer

3GHz Spectrum Analyzer

GW Instek

Category : Spectrum Analyzers

$4,894 (CAD)
$3,299 (USD)
Add to Cart



Practical, Affordable and Never Careless

GSP-9300B is a 3GHz spectrum analyzer to meet basic RF measurement requirements. It provides the frequency stability of 0.025ppm; the aging rate of 1ppm/year; a built-in preamplifier; the base noise of -149dBm/Hz, and more than 20 measurement applications, including AM/FM modulation signal analysis, signal channel analysis, and CATV parameter test. While collocating with TG option, GSP-9300B can conduct frequency response or power linearity tests for components.

For monitoring signals, GSP-9300B provides Topographic display mode, which is capable of distinguishing continuous or random signals by using color temperature. Spectrogram mode provides a time axis on spectrum display that allows users to observe signal variations based upon the reference of time. Split window mode allows different parameter settings for each display window. Additionally, GSP-9300B also provides user-friendly user interfaces such as display mode, help, multi-languages, and fast data logging, etc. Interfaces and software include USB/RS-232/LXI/MicroSD/GPIB (option)/DVI output and dedicated PC software IVI Driver.

GSP-9300B, with its unique features, including auto wake-Up, sequence function, and limit line testing, is specially designed to meet the requirements of production lines. The patent design of heat conduction allows GSP-9300B to substantially reduce the warm-up time so as to expedite production processes. Options include tracking generator, carrying bag, battery module, EMI antenna set and rack accessories. The compact design of GSP-9300B satisfies either field testing or the integration of automatic testing systems.

To sum up, GSP-9300B is a stable, light and all-purpose test equipment, which is the most ideal choice for the educational market, production line, and general signal monitoring applications, etc. Most important, the pricing of GSP-9300B is beyond your imagination and it is the number one choice for users with budget considerations.

Frequency Stability: 0.025ppm Wireless communications applications are nowadays ubiquitous. Signals in the limited spectrum are getting very crowded. Therefore, the demands of signal efficiency and frequency stability are higher and stricter. To meet high precision measurement requirements, GSP-9300B provides the frequency stability of 0.025ppm and the aging rate of 1ppm/year, which only appear in high-end T&M equipment.
Built-in Preamplifier Engineers often face the challenge of measuring small RF signals during product development stage. GSP-9300B’s built-in preamplifier provides the base noise of -149dBm. When collocating with the built-in EMI filter and the dedicated EMI near field probe, GSP-9300B can conduct EMI tests and debugging.
More than 20 measurement applications GSP-9300B provides rich signal processing functions, including AM/FM modulation signal analysis, signal channel analysis, and CATV parameter test, characteristic test on signal stability, and frequency response or power linearity tests for components to substantially bring up the measurement convenience. Most competitors in the same class only offer a few test functions, and the standard built-in functions of GSP-9300B are options for competitors.


  • Frequency Range: 9kHz ~ 3 GHz
  • 0.025ppm Frequency Stability and 1ppm aging Rate
  • Built-in Preamplifier, 50dB Attenuator, and Sequence Function
  • RBW: 1Hz ~ 1MHz
  • Sensitivity: -149dBm/Hz (@PreAmp on)
  • Built-in AM/FM Demodulation & Analysis
  • Built-in P1dB point, Harmonic, Channel Power, N-dB bandwidth, OCBW, ACPR, SEM, TOI, CNR, CTB, CSO, Noise Marker, Frequency Counter, Time Domain Power, Gated Sweep
  • Built-in Spectrogram, Topographic and Dual-View Display Modes
  • Remote Control Interface: LAN, USB, RS-232
  • Options: Tracking Generator, GPIB Interface



Frequency Range 9 kHz to 3 GHz
Frequency Resolution 1 Hz

Frequency Reference

Accuracy ±(period since last adjustment X aging rate) + stability over temperature + supply voltage stability
Aging Rate ±1 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 resolution)
Trace points Max 601 points, min 6 points

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
Accuracy ± frequency resolution1 - RBW: Auto;

Phase Noise

Offset from Carrier Fc =1 GHz; RBW = 1 kHz, VBW = 10 Hz; Average ≥ 40
10 kHz <-88 dBc/Hz Typical
100 kHz <-95 dBc/Hz Typical
1 MHz <-113 dBc/Hz Typical

Resolution Bandwidth (RBW) Filter

Filter Bandwidth 1 Hz to 1 MHz in 1-3-10 sequence -3dB bandwidth
200 Hz, 9 kHz, 120 kHz, 1MHz -6dB bandwidth
Accuracy ± 8%, RBW = 1MHz Nominal
± 5%, RBW < 1MHz 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


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; RF Input is terminated with a 50Ω load. RBW 10 Hz; VBW 10 Hz; span 500 Hz; reference level =  -60dBm; trace average ≥ 40
9 kHz to 100 kHz < -93 dBm Nominal
100 kHz to 1 MHz < -90 dBm - 3 x (f/100 kHz) dB
1 MHz to 2.7 GHz < -122 dBm
2.7 GHz to 3 GHz < -116 dBm
Preamp on 0 dB attenuation; RF Input is terminated with a 50Ω load ; 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 Nominal
1 MHz to 10 MHz < -142 dBm
10 MHz to 3 GHz < -142 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; 23°C±1°C; Signal at Reference Level
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
2GHz to 3 GHz ± 0.7 dB
Preamp on Attenuation: 0 dB; Reference: 160 MHz; 20 to 30°C
1 MHz to 2 GHz ± 0.6 dB
2 GHz to 3 GHz ± 0.8 dB

Attenuation Switching Uncertainty

Attenuator setting 0 to 50 dB in 1 dB step
Uncertainty ± 0.25 dB reference: 160 MHz, 10dB attenuation

RBW Filter Switching Uncertainty

1 Hz to 1 MHz ± 0.25 dB reference : 10 kHz RBW

Level Measurement Uncertainty

Overall Amplitude Accuracy ± 1.5 dB 20 to 30°C; frequency > 1 MHz; Signal input 0 to -50 dBm; Reference level  0 to -50 dBm; 
Input attenuation 10 dB;  
RBW  1 kHz; VBW 1 kHz; after cal; Preamp Off
± 0.5 dB Typical

Spurious Response

Second Harmonic Intercept Preamp off; signal input -30dBm; 0 dB attenuation
+35 dBm Typical; 10 MHz < fc < 775 MHz
+60 dBm Typical; 775 MHz ≤ fc < 1.625 GHz
Third-order Intercept Preamp off; signal input -30dBm; 0 dB attenuation
> 1dBm 300 MHz to 3 GHz
Input Related Spurious < -60 dBc Input signal level -30 dBm, Att. Mode, Att=0dB; 20-30ºC
Residual Response (inherent) <-90 dBm Input terminated; 0 dB attenuation; Preamp off


Sweep Time

Range 204 us to 1000 s Span > 0 Hz
50 us to 1000 s Span = 0 Hz; Min Resolution = 10 us
Sweep Mode Continuous; Single
Trigger Source Free run; Video; External
Trigger Slope Positive or negative edge

RF Preamplifier

Frequency Range 1 MHz to 3 GHz
Gain 18 dB Nominal
(installed as standard)

Front Panel Input/Output

RF Input

Connector Type N-type female  
Impedance 50 ohm Nominal
VSWR <1.6 :1 300 kHz to 3 GHz; Input attenuator ≥ 10 dB

Power for Option

Connector Type SMB male
Voltage/Current DC +7V / 500 mA max With short-circuit protection

USB Host

Connector Type A plug
Protocol Version 2.0 Supports Full/High/Low speed

MicroSD Socket

Protocol SD 1.1
Supported Cards  microSD, microSDHC Up to 32GB capacity

Rear Panel Input/Output

Reference Output

Connector Type BNC female
Output Frequency 10 MHz(Nominal)
Output Amplitude 3.3V CMOS
Output Impedance 50 ohm

Reference Input

Connector Type BNC female
Input Reference Frequency 10 MHz
Input Amplitude -5 dBm to +10 dBm
Frequency Lock Range Within ± 5 ppm of the input reference frequency

Alarm Output

Connector Type BNC female Open-collector

Trigger Input/ Gated Sweep Input

Connector Type BNC female
Input Amplitude 3.3V CMOS
Switch Auto selection by function

LAN TCP/IP Interface

Connector Type RJ-45
Base 10Base-T; 100Base-Tx; Auto-MDIX

USB Device

Connector Type B plug For remote control only; supports USB TMC
Protocol Version 2.0 Supports Full/High/Low speed

IF Output

Connector Type SMA female
Impedance 50 ohm Nominal
IF Frequency 886 MHz Nominal
Output level -25 dBm 10 dB attenuation; RF input: 0 dBm @ 1 GHz

Earphone Output

Connector Type 3.5mm stereo jack, wired for mono operation

Video Output

Connector Type DVI-I ( integrated analog and digital) , Single Link. Compatible with VGA or HDMI standard  through adapter

RS232 Interface

Connector Type D-sub 9-pin female Tx,Rx,RTS,CTS

GPIB Interface (Optional)

Connector Type IEEE-488 bus connector

AC Power Input

Power Source AC 100 V to 240 V, 50 / 60 Hz Auto range selection

Battery Pack (Optional)

Battery pack 6 cells, Li-Ion rechargeable, 3S2P With UN38.3 Certification
Voltage DC 10.8 V
Capacity 5200 mAh / 56Wh


Internal Data storage 16 MB nominal
Power Consumption <65 W
Warm-up Time < 30 minutes
Temperature Range +5 °C to +45 °C Operating
-20 °C to + 70 °C Storage
Weight 4.5 kg (9.9 lb) Inc. all options (Basic+TG+GPIB+Battery)
Dimensions 210 x 350 x 100 (mm)
8.3 x  13.8 x 3.9 (in)

Tracking Generator (Optional)

Frequency Range 100 kHz to 3 GHz
Output Power -50 dBm to 0 dBm in 0.5 dB steps
Absolute Accuracy ± 0.5 dB @160 MHz, -10 dBm, Source attenuation 10 dB, 20 to 30°C
Output Flatness Referenced to 160 MHz, -10 dBm
100 kHz to 2 GHz ± 1.5 dB
2 GHz to 3 GHz ± 2 dB
Output Level Switching Uncertainty ± 0.8 dB Referenced to -10 dBm
Harmonics < -30 dBc Typical, output level = -10 dBm
Reverse Power +30 dBm max.
Connector type N-type female
Impedance 50 ohm Nominal
Output VSWR < 1.6:1 300 kHz to 3 GHz, source attenuation ≥ 12 dB

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