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Lab Brick® LSG Signal Generators

Lab Brick® LSG Signal Generators

20 MHz to 6 GHz Programmable Signal Generators

  • USB powered and controlled
  • Includes easy-to-install-and-use GUI
  • Programmable frequency stepping
  • Operate multiple devices directly from a PC or self-powered USB hub
  • Autonomous operation from USB hub or battery pack
  • Easily programmable for ATE applications
  • Robust aluminum construction
  • Customization available for unique requirements
  • API DLL and LabVIEW compatible drivers available

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The Lab Brick LSG series of USB-compatible signal generators covers frequencies from 20 MHz to 6 GHz with high output levels and excellent spectral purity. They require no additional DC supply voltage and offer several operating modes, including continuous-wave (CW) and swept-frequency. GUI software can track and control several connected signal generators, simplifying multiple-signal test setups. Each device stores settings in internal memory, allowing it to power up in a specific instrument state. Lab Brick LSG Signal Generators

Each device comes with a USB flash drive containing the GUI software and digital version of the programming guide, along with a 6-ft. USB cable. It measures 4.90 x 3.14 x 1.59 in. (124 x 80 x 40 mm) and weighs less than 1 lb. (0.45 kg). In non-USB applications, the Lab Brick® signal generators can operate with battery power or remote power supply. For automatic-test-equipment (ATE) applications, a programming guide is available for each Lab Brick® signal generator. In addition, they are programmable by means of LabVIEW software drivers from National Instruments (

Lab Brick® signal generators comply with international requirements for electromagnetic-compatibility (EMC) emissions and immunity for Class A ISM devices to ensure that they don’t interfere with other ISM-band equipment. All Lab Brick LSG signal generators are ROHS compliant and can be used with any PC or laptop computer with USB 2.0 port (or powered USB hub) and Windows 2000, XP, Vista, or Windows 7 operating system. Lab Brick LSG Signal Generators


  • Automated Test Equipment (ATE)
  • Portable LO Source
  • Engineering/Production Test Lab


Typical Specifications

Standard Models1
LSG-121 20 – 120 MHz
LSG-251 50 – 250 MHz
LSG-451 70 – 450 MHz
LSG-152 250 – 1500 MHz
LSG-222 500 – 2200 MHz
LSG-402 1000 – 4000 MHz
LSG-602 1500 – 6000 MHz
Phase Noise at 10 kHz/100 kHz Offset
LSG-221 -105/-125 dBc/Hz
LSG-251 -105/-125 dBc/Hz
LSG-451 -105/-125 dBc/Hz
LSG-152 -95/-115 dBc/Hz
LSG-222 -90/-110 dBc/Hz
LSG-402 -85/-105 dBc/Hz
LSG-602 -75/-95 dBc/Hz
Resolution 100 kHz
Accuracy +/- 2ppm
Output Power2
Range +10 – -45 dBm3
Resolution 0.5 dB
Accuracy +/-0.5 dB at +10 dBm
+1.5/-0.5 dB full range
Typical -80 dBc
Maximum -70 dBc
VSWR (max.) 1.5:1
Harmonics (max.) -10 dBc
DC Current via USB 400 mA typical
RF Connector SMA-female
USB Connector MiniB-female
Dimensions 4.90 x 3.14 x 1.59 in.
(124 x 80 x 40 mm)
Weight < 1.0 lb. (< .45 kG)
Mounting Holes (2) #6 socket head screws
(not included)
Standard Operating Modes Fixed frequency
Frequency stepping – single sweep
Frequency stepping – repeat sweep
Available Options
Opt 001 External reference
Opt 002 +13 dBm output power
GUI Compatibility Windows 7/8/XP/2000
Included Accessories USB Flash Drive with GUI Software & User Manual/Programming Guide
6-ft. USB Cable
1. Customized models are available tailored to specific performance requirements.
2. Output power capability to +26 dBm on select models.
3. +10 to -40 dBm for the LSG-602.
Specifications are subject to change without notice.


Lab Brick LSG Signal Generators
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