Spectrum Analyzer GSP-9300B

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

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

Frequency Range: 9 kHz to 3 GHz
Resolution: 1 Hz
Reference Accuracy: ± (Time since last adjustment × aging rate) + temp. stability + voltage stability
Aging Rate: ±1 ppm (max. 1 year)
Temperature Stability: ±0.025 ppm (0 to 50 °C)
Voltage Stability: ±0.02 ppm

Frequency Readout & Span

Accuracy (Start/Stop/Center/Marker):
± (marker frequency × reference accuracy + 10% × RBW + resolution)
Trace Points: 6 to 601
Marker Frequency Counter:
- Resolution: 1 Hz / 10 Hz / 100 Hz / 1 kHz
- Accuracy: ± (marker frequency × ref. accuracy + resolution)
Span Range: 0 Hz (zero span), 100 Hz to 3 GHz
Span Resolution: 1 Hz
Span Accuracy: ± frequency resolution (RBW: Auto)

Phase Noise (Typical at Fc = 1 GHz, RBW = 1 kHz, VBW = 10 Hz, Avg ≥ 40)

10 kHz offset: < -88 dBc/Hz
100 kHz offset: < -95 dBc/Hz
1 MHz offset: < -113 dBc/Hz

Resolution Bandwidth (RBW) Filter

Filter Bandwidths: 1 Hz to 1 MHz (1-3-10 steps)
-6 dB Bandwidths: 200 Hz, 9 kHz, 120 kHz, 1 MHz
Accuracy: ±8% (1 MHz), ±5% (<1 MHz)
Shape Factor: < 4.5:1 (-60 dB to -3 dB)

Video Bandwidth (VBW) Filter

Bandwidth: 1 Hz to 1 MHz in 1-3-10 sequence

Amplitude

Measurement Range:
- 100 kHz–1 MHz: DANL to +18 dBm
- 1 MHz–10 MHz: DANL to +21 dBm
- 10 MHz–3 GHz: DANL to +30 dBm
Input Attenuator: 0–50 dB (1 dB steps, auto/manual)
Max Input Levels:
- Total Power: ≤ +33 dBm (Attenuator ≥10 dB)
- DC Voltage: ±50 V
1 dB Gain Compression:
- 0 dBm @ 1st Mixer (preamp off)
- -22 dBm @ Preamp (preamp on)

Displayed Average Noise Level (DANL)

Preamp Off (0 dB attenuation):
- 9 kHz–100 kHz: < -93 dBm
- 100 kHz–1 MHz: < -90 dBm – 3 × (f/100 kHz) dB
- 1 MHz–2.7 GHz: < -122 dBm
- 2.7–3 GHz: < -116 dBm
Preamp On (0 dB attenuation):
- 100 kHz–1 MHz: < -108 dBm – 3 × (f/100 kHz) dB
- 1 MHz–10 MHz: < -142 dBm
- 10 MHz–3 GHz: < -142 dBm + 3 × (f/1 GHz) dB

Display & Measurement

Scales: Log, Linear
Units: dBm, dBmV, dBuV, V, W
Marker Readout:
- Log: 0.01 dB
- Linear: 0.01% of reference level
Display Modes: Trace, Topographic, Spectrogram (Single/Split windows)
Number of Traces: 4
Detectors: Positive Peak, Negative Peak, Sample, Normal, RMS (not Video)
Trace Functions: Clear & Write, Max/Min Hold, View, Blank, Average

Amplitude Accuracy & Uncertainty

Absolute Amplitude Accuracy (Center = 160 MHz):
- Preamp Off: ±0.5 dB (Ref = 0 dBm, 10 dB Atten)
- Preamp On: ±0.6 dB (Ref = -30 dBm, 0 dB Atten)
Frequency Response (20–30 °C, Ref = 160 MHz):
- Preamp Off:
  - 100 kHz–2 GHz: ±0.5 dB
  - 2–3 GHz: ±0.7 dB
- Preamp On:
  - 1–2 GHz: ±0.6 dB
  - 2–3 GHz: ±0.8 dB
Attenuation Switching Uncertainty: ±0.25 dB
RBW Switching Uncertainty: ±0.25 dB
Overall Amplitude Accuracy: ±1.5 dB
- Typical: ±0.5 dB (preamp off, 20–30 °C, >1 MHz)

Spurious Response

2nd Harmonic Intercept (Preamp Off):
- +35 dBm (10 MHz < Fc < 775 MHz)
- +60 dBm (775 MHz ≤ Fc < 1.625 GHz)
3rd Order Intercept (Preamp Off): > +1 dBm (300 MHz–3 GHz)
Input Related Spurious: < -60 dBc (input -30 dBm)
Residual Response (Inherent): < -90 dBm (input terminated)

Sweep & Trigger

Sweep Time Range:
- Span > 0 Hz: 204 µs to 1000 s
- Span = 0 Hz: 50 µs to 1000 s (min resolution 10 µs)
Modes: Continuous, Single
Trigger Sources: Free Run, Video, External
Trigger Slope: Positive or Negative edge

RF Preamplifier (Standard)

Frequency Range: 1 MHz to 3 GHz
Gain: 18 dB nominal

Front Panel I/O

RF Input: N-type female, 50 Ω, VSWR <1.6:1 (≥10 dB Atten)
Option Power: SMB male, +7V / 500 mA max (short-circuit protection)
USB Host: Type-A, USB 2.0
MicroSD: SD 1.1, microSD/microSDHC up to 32 GB

Rear Panel I/O

Ref Output: BNC, 10 MHz, 3.3V CMOS, 50 Ω
Ref Input: BNC, 10 MHz, -5 dBm to +10 dBm
- Lock Range: ±5 ppm of input frequency
Alarm Output: BNC, open-collector
Trigger/Gated Sweep Input: BNC, 3.3V CMOS
LAN (TCP/IP): RJ-45, 10/100Base-T, Auto-MDIX
USB Device: Type-B, USB 2.0, TMC protocol
IF Output: SMA, 886 MHz, -25 dBm (10 dB Atten, RF in = 0 dBm @ 1 GHz)
Earphone Output: 3.5 mm stereo jack (wired mono)
Video Output: DVI-I (Analog + Digital, Single Link, HDMI/VGA compatible)
RS232: D-sub 9-pin female (Tx, Rx, RTS, CTS)
GPIB (Optional): IEEE-488 connector

Power & Battery

AC Power Input: 100–240 V AC, 50/60 Hz (Auto-ranging)
Battery Pack (Optional):
- 6-cell Li-ion, 3S2P, UN38.3 certified
- Voltage: 10.8 V DC
- Capacity: 5200 mAh / 56 Wh

General Specifications

Internal Storage: 16 MB
Power Consumption: < 65 W
Warm-Up Time: < 30 minutes
Operating Temp: +5 °C to +45 °C
Storage Temp: -20 °C to +70 °C
Weight: 4.5 kg (9.9 lb) including all options
Dimensions: 210 × 350 × 100 mm (8.3 × 13.8 × 3.9 in)
Calibration Cycle: Recommended annually (GW Instek authorized centers)

Tracking Generator (Optional)

Frequency Range: 100 kHz to 3 GHz
Output Power: -50 dBm to 0 dBm (0.5 dB steps)
Absolute Accuracy: ±0.5 dB (@160 MHz, -10 dBm, 20–30 °C, 10 dB source atten)
Flatness (Referenced to 160 MHz):
- 100 kHz–2 GHz: ±1.5 dB
- 2–3 GHz: ±2 dB
Switching Uncertainty: ±0.8 dB (referenced to -10 dBm)
Harmonics: < -30 dBc (typical, -10 dBm output)
Reverse Power Protection: Max +30 dBm
Connector: N-type female, 50 Ω
Output VSWR: < 1.6:1 (300 kHz–3 GHz, source atten ≥12 dB)