Sigint Solutions
 

 

LMS Signal Generators

vaunix-signal-generators 
The Lab Brick LMS series of USB-compatible, synthesized signal generators cover a frequency range from .5 GHz to 20 GHz with low noise, fast 100-microsecond switching time, and fine 100 Hz frequency resolution.







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Description

The LSG series require no additional DC supply voltage and offer advanced features such as phase-continuous linear-frequency sweeping, internal/external 10 MHz reference, and optional pulse modulation. 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. Each device comes with a USB flash drive containing the GUI software and digital version of the programming guide, along with a 3-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 (www.ni.com).

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 LMS 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.

Features and Benefits
  • USB powered and controlled
  • Includes easy-to-install-and-use GUI
  • Fast switching to 20 GHz
  • Selectable internal/external 10 MHz reference
  • Phase-continuous frequency sweep (LFM)
  • High-speed internal and external pulse modulation
  • Autonomous operation from USB hub or battery pack
  • Robust aluminum construction
  • API DLL and LabVIEW compatible drivers available
Applications
  • Automated Test Equipment (ATE)
  • Portable LO Source
  • Engineering/Production Test Lab



Technical Specifications

 Standard Models1 LMS-232D LMS-402D LMS-602D LMS-802 LMS-103 LMS-123 LMS-163 LMS-203
Frequency Range [MHz] 0.5 - 2.3 1.0 - 4.0 1.5 - 6.0 4-8 5-10 8-12 8-16 10-20
Phase Noise at
10kHz/100kHz
Offset [dBc/Hz]
-98/-105 -98/-105 -85/-94 -81/-89 -81/-89 -77/-86 -75/-83 -75/-83
Frequency Resolution 100kHz      
Frequency Accuracy +/- 2ppm       
Frequency Switching 100 microseconds
Output Power Range [dBm]
+10 to -40 +10 to -40 +10 to -40 +10 to -40 +10 to -40 +10 to -40 +10 to -30 +10 to -30
Output Power Resolution 0.5 dB       
Output Power Accuracy +/- 0.75 dB at +10 dBm
+/- 2.0 dB full range    
Spurius Typical -80 dBc       
Spurius Maximum  -70 dBc      
VSWR(max.) 1.5:1
Typical Harmonics  -40 dBc      
Maximum Harmonics -15 dBc 
SubHarmonics [dBc] None None None -60 -60 -60 -25 -25
Selectable Internal/External Reference Frequency 10 MHz
Selectable Internal/External Reference Input Level 500 mV to 3V peak to peak
Phase-Continuous Linear-Frequency Sweep (LFM) Frequency Range Full band
Phase-Continuous Linear-Frequency Sweep (LFM) Sweep Time 1 ms to 1000 seconds
Phase-Continuous Linear-Frequency Sweep (LFM) Sweep Direction Up, down, bidirectional
Optional Pulse Modulation Pulse Depth -70 dBc typical, -60 dBc min. -70 dBc typical, -60 dBc min. -70 dBc typical, -60 dBc min. -70 dBc typical, -60 dBc min. -70 dBc typical, -60 dBc min. -70 dBc typical, -60 dBc min. -45 dBc typical, -35 dBc min. -45 dBc typical, -35 dBc min.
Rise/Fall Time 30 ns typical
Internal Pulse Mode
Pulse Width
100 ns min
Internal Pulse Mode PRI 100 ns plus pulse width min.
Internal Pulse Mode Resolution 100 ns
Internal Pulse Mode Trigger Output 0 to 5 volts
External Pulse Mode Pulse Width 100 ns min.
External Pulse Mode PRI 100 ns plus pulse width
External Pulse Mode Trigger Input 0 to 5 Volts nom., 0 to 3 Volts min.
DC Current via USB 5 volts - 300 mA 5 volts - 300 mA 5 volts - 300 mA 5 volts - 300 mA 5 volts - 300 mA 5 volts - 300 mA 550 mA 550 mA
 RF Connector    SMA-female
 USB Connector    B-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 003
Pulse Modulation
GUI Compatibility Windows 2000/XP/Vista/7
Included Accessories USB Flash Drive with GUI Software & User Manual/Programming Guide
3-ft. USB Cable
Notes 1 Customized models are available tailored to specific performance requirements. Specifications are subject to change without notice.
                             

Performance

LMS-232D

LMS-402D

LMS-602D

LMS-802

LMS-103

LMS-123

LMS-163

LMS-203