Digital Lynx SX

High Performance, Expandable Recording System with Closed Loop Processing

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Digital Lynx SX

The Digital Lynx SX is our flagship data acquisition system, combining nearly three decades of electrophysiology innovations into one high performance research solution to serve your lab for decades to come. This system is highly configurable and upgradeable to fit your immediate research needs and budget while enabling you to scale channel counts through the addition of Combo Boards and integrate peripherals through a versatile array of I/O connections. With one complete electrophysiology system, you can record analog signals from nearly all existing electrode interfaces or silicon probe implants, record digitized signals from digital multiplexing headstages, and process wireless data!

Starting in 2020, each new Digital Lynx SX includes the Hardware Processing Platform (HPP) for real-time, closed loop, data processing and response for neuromodulation and other advanced experiment designs.

High Density: up to 512 channels
High Definition: 40 kHz simultaneous sampling
High Fidelity: 24 bit A/D converters
Full Bandwidth: 0.1 to 8000 Hz
Wide Input Range: ±132 mV (AC), ±1 V (DC)

Closed Loop Processing

Real-time Closed Loop Feedback

Digital Lynx SX includes HPP, a built-in user-programmable processor for low-latency data analysis and response (less than 1 millisecond). HPP can execute experiment stimuli with precise control of Digital Lynx SX analog and digital I/O: Combo Board inputs from buffered tethered headstages, digital multiplexing (MUX) headstages, FreeLynx wireless headstages, and TTL I/O.

  • Gamma Oscillation Detection
  • Theta Oscillation Detection
  • Sharp Wave Ripple Detection
  • User-Defined TTL Output Responses
  • Additional capabilities can be programmed via C/C++ or VHDL

See our HPP Page for more details, documents, downloads and Applications Project updates.

More about HPP

Unmatched Signal Quality

Full Bandwidth Prevents Signal Clipping

Digital Lynx SX is a full bandwidth, DC-coupled recording system, preventing artifact and signal clipping, ending the need for gain adjustments, and enabling continuous accurate recording during stimulus delivery with no recovery time even when inputs are saturated. This allows investigation of after-discharge signals and shows long-term DC electrode potential shifts without clipping (Brinkmann, 2009).

Extremely Flexible Referencing

Referencing is the key to improving your signal-to-noise ratio! The Digital Lynx SX provides extremely flexible reference selection with up to 8 references for each 32-channel Combo Board and 8 global references shared across the system. All references are software controlled, eliminating the need to physically change connections at the animal interface. Connections can also be changed on-the-fly to optimize signal quality during recording.

System Configurations

Digital Lynx SX Chassis Options

Digital Lynx SX is available in two chassis sizes with either 4 or 16 Combo Board slots. An additional expansion option allows connection of low-cost digital multiplexing (MUX) headstages. A second fiber Ethernet connection may be used to input data from up to two FreeLynxTM headstages (up to 128 channels each), enabling closed loop processing of wirelessly-recorded neural signals.

  • Digital Lynx 4SX: 4 Combo Board slots - up to 128 channels
  • Digital Lynx 16SX: 16 Combo Board slots - up to 512 channels
  • Digital Lynx 4SX-M or 16SX-M support MUX headstages - up to 128 channels
  • Connect 1 or 2 FreeLynx (up to 128 channels each) - enables closed loop processing of wireless data

Specifications: Digital Lynx Combo Board

Channels 32 recording, 8 software-selectable references, 2 stim pairs
Global References 8 via MDR26 connector
A/D Converter Resolution 24 bit
Sample Rates 16 - 40 kHz in 2 kHz steps
Signal Input Configurations AC, DC and Hybrid AC/DC coupled
AC Input Range ±132 mV (> 1 Hz)
DC Input Range > ±1 V
CMMR > 105 dB at 60 Hz
Input Referred Noise ≤ 1.3 µVRMS
Headstage Connector MDR50

Specifications: Multiplexing Headstages (SX-M)

Channels up to 128
References 1 (fixed) per 32-channel bank
Noise ≤ 2.5 µVRMS
Resolution 16 bit
Dynamic Input Range ±5 mV
Sample Rates 16 - 30 kHz in 2 kHz steps
Signal Inputs AC coupled (0.1 Hz to 8 kHz)
Headstage Connectors µDB25 (2)

Additional Digital Lynx SX Specifications

TTL I/O Ports 4 (8 bit)
Front Panel D/A Outputs Two 1/8" stereo jacks (±1V input range)
Power Supply +15 V
Data Links 2 x Gigabit Ethernet over Fiber
HPP Connectors USB 2.0, Gigabit Ethernet, Serial UART, JTAG
HPP Programming MATLAB®, C/C++ (RTOS), VHDL (FPGA)
HPP Interface SD Card

Cheetah Software

Extremely stable, user-friendly, high-performance software package, Cheetah is the ultimate solution for neural signal processing, display, recording, and network data distribution. Customize online experiment analysis and control. Process up to 512 input electrode channels. Required for use with Digital Lynx SX.

  • High resolution, full bandwidth recording with unfiltered, raw data files
  • Channel cloning and digital signal processing for LFP/EEG/EMG and spikes
  • Auto thresholding for functional spike detection levels
  • High performance visual displays for spikes and EEG
  • Integration with additional software for auto-clustering, custom analysis and control, and more

More about Cheetah Software

Differential Stim

Neuralynx animal interface devices include this unique feature, giving you a built-in method for reward stimulation, lighting LEDs, joint shock delivery, eye-blink detection sensors, microphone signals, unbuffered signal transmission, or complex stimulus control. Up to 250 milliamps can be carried by these lines and the nominal resistance is about 3 ohms per meter. All Neuralynx acquisition systems may take advantage of this feature, depending on the actual interface devices chosen for your experiment.

Video Tracking

All Neuralynx acquisition systems are compatible with our video tracking solutions, supporting position, navigation, head direction and grid cell studies with multiple targets. Video tracking data is synchronized with neural signal data by Cheetah Software, enabled through a separate VTS license.


Utilize a simple, lightweight, easy-to-use optogenetic stimulus solution: Halo Microdrives and Fiber Mounted LEDs (FLEDs). These devices incorporate an independently-adjustable light source into the microdrive as an additional shuttle, delivering consistent blue, green, amber, or red wavelengths without additional optical connections, patch cords, ferrules, or FORJ. Ask your sales representative for more details.