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GSP-9300B Spectrum Analyzer


  • 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

Category: Spectrum Analyzer

Tags: GSP-9300B, GSP 9300B, GSP9300B, GW Instek Indonesia, GWInstek, Spectrum Analyzer, Distributor GW Instek

Ordering Info :

3 GHz Spectrum Analyzer


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.

(The specifications apply when the GSP-9300B is powered on for at least 30 minutes to warm-up to a temperature of 20 ℃ to 30 ℃, unless specified otherwise.)




9 kHz to 3 GHz


1 Hz

Frequency Reference


±(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


1 Hz, 10 Hz, 100 Hz, 1 kHz


±(marker frequency indication X frequency reference accuracy + counter resolution)

RBW/Span >=0.02 ;

Mkr level to DNL>30 dB

Frequency Span


0 Hz (zero span), 100 Hz to 3 GHz



1 Hz



± 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


100 kHz

<-95 dBc/Hz


1 MHz

<-113 dBc/Hz


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


± 8%, RBW = 1MHz


± 5%, RBW < 1MHz


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


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


1 MHz to 10 MHz

< -142 dBm

10 MHz to 3 GHz

< -142 dBm + 3 x (f/1 GHz) dB

Level Display Range


Log, Linear



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




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



± 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


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


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



18 dB



(installed as standard)

Front Panel Input/Output

RF Input

Connector Type

N-type female



50 ohm



<1.6 :1

300 kHz to 3 GHz; Input attenuator ≥ 10 dB

Power for Option

Connector Type

SMB male



DC +7V / 500 mA max

With short-circuit protection

USB Host

Connector Type

A plug



Version 2.0

Supports Full/High/Low speed

MicroSD Socket


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


Output Amplitude



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


Trigger Input/ Gated Sweep Input

Connector Type

BNC female


Input Amplitude




Auto selection by function


LAN TCP/IP Interface

Connector Type




10Base-T; 100Base-Tx; Auto-MDIX

USB Device

Connector Type

B plug

For remote control only; supports USB TMC


Version 2.0

Supports Full/High/Low


IF Output

Connector Type

SMA female



50 ohm


IF Frequency

886 MHz


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


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


DC 10.8 V



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


-20 °C to + 70 °C



4.5 kg (9.9 lb)

Inc. all options (Basic+TG+GPIB+Battery)


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


< -30 dBc

Typical, output level = -10 dBm

Reverse Power

+30 dBm max.


Connector type

N-type female



50 ohm


Output VSWR

< 1.6:1

300 kHz to 3 GHz, source attenuation ≥ 12 dB