Description

The DS Instruments SG4400L compact RF Signal Generator enables users to generate a high quality RF signal easily and at low cost. The output covers 35 to 4400 MHz. The produced wave is fully synthesized using modern fractional N synthesis. The step size of the RF output  varies from a maximum of ~2.5KHz to less than 25Hz , depending on band of operation. The synthesized source has its own internal precision 10 MHz reference frequency. Maximum output power is calibrated to +15dBm, and can be adjusted in 0.25dB steps down to -25dBm. The crisp OLED display provides useful feedback for the user, and front control buttons provide a quick alternative to USB control. Like most of our products, the SG4400L easily fits in the palm of your hand, making it a truly portable and bench-space-saving device.

Need lower harmonic content? SG6000F Model

Low phase-noise, ultra small frequency step, PureSine model: SG6000PRO

Need higher frequency? Try the SG12000L

NOTE: We can deliver bulk orders of this device with no Display or Ethernet for a discounted price. Contact us for a quote.

SG4400L (Rev 19) Product Features:

• New internal harmonic-filtering (upgraded 2025Q3)
• High-resolution adjustable RF signal output power
• New more-robust output amplifier
• Flexible frequency-sweeping support
• Lower phase-noise than SG6000L
• Internal 10MHz reference source
• External reference input auto-detection
• Professional industry-standard SCPI command support
• Front user control buttons
• Front-mounted bright OLED display
• Sturdy all-aluminum powder-coated black enclosure
• Friendly and simple PC control software
• Standard Ethernet port now included!

Ultra-Compact RF Signal Generator Specifications:

• Frequency Range: 35-4400 MHz
• Power Output Range (calibrated steps): -25 to +15dBm
• Power Output Range (uncalibrated vernier): -30 to +17dBm Typ.
• Typical harmonic levels (0.3-4.4GHz):  -30dBc
• Phase Noise @ 4.4GHz: -82dBc @ 10KHz offset
• Power control resolution: 0.25dB steps & 0.1dB variable
• Internal 10MHz reference stability: ±2.5PPM TCXO
• Dimensions: 2.75″ x 1.25″ x 2.15″
• Input Voltage: 5V standard USB-C
• Output Impedance: 50 Ohm
• RF Output Port: Premium 18GHz SMA
• 10MHz Reference Port: MCX

 Common Applications:

• Automated testing environments
• General RF Lab use
• Flexible LO sourcing
• Antenna design
• EMC Testing
• Production verification and testing
• Educational / university lab use
• Aerospace / Defense Research

Performance Plots:

 

Mechanical Information:

 

UPC: 737212885872