Computerized Polygraph LX6-S

Computerized Polygraph LX6-S

The Computerized Polygraph LX6-S is the next generation 10-channel polygraph system. The LX6-S is the world’s most advanced polygraph (lie detector) capable of simultaneously recording changes in several physiological variables while the subject is asked a series of questions pertaining to a specific issue under investigation. The charts generated during the polygraph examination are interpreted by a polygraph examiner.


The LX6-S computerized polygraph records, stores, and analyzes physiological changes during a polygraph examination. It combies conventional polygraph procedure with a sophisticated state-of-the-art computer. With the basic system a total of nine channels can be recorded at one time.


  • Superior Fischer Connectors brand connections
  • Electronic sensors cannot be incorrectly connected
  • Recessed pneumatic ports
  • Durable and easy to grip molded cables
  • Rugged molded and textured enclosure
  • Improved port layout and labeling
  • Enclosure weighted and designed for added stability
  • 32 Bit data resolution
  • Additional AUX port (10-Channels)
  • Standard HID USB driver (no FTDI driver required)
  • Best in industry electronics and EDA
  • Compatible with current LXSoftware and future Lafayette polygraph software
  • Package includes same accessories as current systems
  • LX6 exclusive 5-year instrument warranty
When using the basic LX6-S system, results are derived from the following parameters: Pneumatic Pneumo – respiration, EDA – electrodermal activity, Cardio – blood volume/pulse rate, and Activity (seat pad) for detecting any movement by the subject.
The LX6-S polygraph can record additional parameters utilizing the following accessories: Photoelectric Plethysmograph (PPG), model 76604-6, Activity Sensor Arm Pads, model 76879A-6, Activity Sensor Feet Pads, model 76879F-6, Masseter Headphone System, model 76879HM-6, Fingerprint/Signature Scanner, model LXSIGPRINT, Digital Web Camera, model LX-WEBCAM, and a microphone for voice recording.


  • LX6 Polygraph Data Acquisition System, model LX6
  • LXSoftware Bundle with OSS and APL’s Polyscore Scoring Algorithm
  • Activity Sensor Seat Pad for LX6, model 76879S-6
  • Silver Color-Coded Pneumatic Pneumo Assembly for LX6, model 76513-6T
  • Blue Color-Coded Pneumatic Pneumo Assembly for LX6, model 76513-6B
  • 7-Foot EDA Cable with Electrodes for LX6-S, model 76640-6
  • Pump Bulb Assembly for LX6-S, model 76506-6
  • Standard Kovacic Arm Cuff for LX6-S, model 76530-6
  • Storage Backpack, model LX-1050BP


  • At least a 1.5 GHz processor recommended
  • 3 GB RAM for 32-bit OS or 4 GB RAM for a 64-bit OS
  • 80 GB harddrive, with at least 20 GB free for video recording
  • Windows XP SP3, Windows Vista 32/64, Windows 7 32/64, Windows 8 32/64, or Windows 10 32/64
  • Support for DirectX 9 graphics with:
  • WDDM Driver
  • 128 MB of graphics memory
  • Pixel Shader 2.0 in hardware
  • 32 bits per pixel
  • Audio Output
  • Keyboard and Microsoft ® Mouse or compatible pointing device
  • Available USB 2.0/3.0 Ports. Connecting a video camera to an external USB hub is not recommended.
  • Digital sound card required for multimedia capabilities
  • Digital video camera required for video capture. Logitech or Microsoft web camera recommended. Many popular IP (networked) cameras are supported by LXSoftware.
  • External Microphone may be required for recording audio, depending upon host computer’s configuration (e.g. no built-in microphone), examine/examinee location, ambient noise, etc.


The U.S. Department of Commerce requires an export license for any polygraph system shipment with an ultimate destination other than: Albania, Australia, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungary, Iceland, Italy, Japan, Latvia, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Turkey, or United Kingdom. It is against U.S. Law to ship a polygraph system to any other country without an export license. If the ultimate destination is not one of the above listed countries, contact Chicago Polygraph Institute for the required license application forms.

Accessorries to our polygraphs


  • Requires LXSoftware 11.7.1+
  • Size (LX6): 8.1″ x 3.22″ x 1.21″ (20.6 x 8.2 x 3 cm)
  • Weight (LX6): 1 lb (454 g)
  • Channels: 10 (6 Physiological, 4 Auxiliary)
  • Isolation: 5000Vrms isolation on all channels
  • Enclosure Material: ABS
  • Power: USB connection
  • Data Transfer Rate: 360 samples/second across all channels
  • Resolution: 32-bit analog to digital conversion
  • Operating Temperature: 32° to 125° F (0° to 52° C)
  • Storage Temperature: -44° to 150° F (-40° to 66° C)
  • Relative Humidity: 20% to 80% Non-condensating
  • Meets ASTM standards
  • Enclosure UL 94V-0 rated
  • CE certified/meets EMC directive
  • Warranty: 5 years
  • LX6 Sensor Channels:
  • 1 Cardio Channel: 0 to 140 mmHg
  • 2 Pneumatic Pneumo Channels: extended pressure range
  • 2 EDA Channels: GSR: 4 µA constant current, range of 10 kΩ to 2.3 MΩ; GSC: range of 5 kΩ to 4.0 MΩ; Isolation: additional 2000Vrms
  • 1 PPG Channel: PPG finger clip: 0.47 second time constant, 940 nm
  • 4 Activity Sensor Channels: 0 to 4 V Analog Input

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