Cadwell enables cutting-edge neurodiagnostics with forward-thinking hardware and innovative software. The Sierra Summit is designed for the electromyographer who prioritizes quality, durability, and efficiency.

Scalable EDX Hardware and Software

  • Build the EDX system you need with a variety of stimulators, amplifiers, and test protocols
  • Our most advanced amplifiers offer 1 -12 channels of sophisticated filtering and noise reduction
  • Choose from a variety of carts, computers and monitors or provide your own
  • Configure a portable Summit™ system that can be set up for EDX testing in a matter of seconds
  • Add integrated Neuromuscular Ultrasound
Electromyography (EMG), Evoked Potential, EDX, electrodiagnostics

Flexible and Familiar Design

Sierra Summit, EMG, EP, NCS, Ultrasound, EDX, electrodiagnostics, EMG amplifier, EMG amplifiers
  • See it how you want to: Custom views give you full control of displays, colors, tables and test protocols
  • Hear it how you want to: Our highest sound quality is achieved with instantaneous signal processing, dual high-quality speakers and full equalizer controls
  • Use it how you want to: Customize your  workflow with user-defined studies and tests that can be adjusted on the fly
Sierra Summit with ultrasound, a completely integrated electrodiagnostic and imaging solution. Two ultrasound options with a variety of transducers will fit your needs and your budget.

Complement your electrodiagnostic testing

  • Confirm electrodiagnostic findings
  • Detect early stage nerve damage
  • Provide insight into muscle functionality
  • See how movement effects the nerve
  • Study the nerve along its entire course

Improve your diagnosis and treatment decisions

  • Improve accuracy and specificity of a diagnosis
  • Identify the site of involvement and origin of compression
  • Determine the needs and expected outcomes of surgery
  • Detect additional evidence: cysts, lipomas, compressions, entrapments, tumors, traumas, and causes of lesions

Augment your needle guidance and injections

  • Ensure the needle is inserted in the correct muscle
  • See the location of the needle within the muscle
  • Measure muscle functionality pre-injection and post-injection
  • Simultaneously hear, see and stimulate for accurate injections

Complete Neurodiagnostic Solutions

Cadwell neurodiagnostic solutions are engineered to work on a single computer or as separate systems connected with CadLink data management. Cadwell is dedicated to creating smart and affordable neurodiagnostic technology.

  • EMG
  • NCS
  • EPs
  • Advanced Protocols
  • Autonomic Studies
  • EEG
  • Ultrasound Imaging
  • T2 Cart – single or dual monitor configuration
  • Point of Care Cart
  • Portable wheeled case
  • Portable carry casy
Electromyography (EMG) - Sierra Summit

The Sierra Summit Evoked Potential system is:


  • Customize existing or create new protocols
  • Simultaneously display live, averaged and grand average data
  • Easily adjust parameters and positions of individual traces or entire trials
  • Customize the calculations of Latency, Amplitude, Interlatency, Interamplitude, percentages, ratios and side-by-side comparisons
  • Incrementally smooth or unsmooth data live or post-acquisition


  • Select the channels and tests you need and easily add more later
  • Software-controlled montages and inputs can be changed on the fly
  • Control settings and parameters directly from the test screen
  • Compare side-by-side with vertical or horizontal split screen
  • Use the Remote Headbox for tight spaces and better patient mobility


  • Fully customize Auto Cursors and highlight abnormal values
  • Use Tabular Data Summary View to see all test results on one screen
  • Use Auto Findings Composer to generate a summary of findings based on normative data
  • Create a personalized report with just a few clicks using QuickReport and custom templates
Electromyography (EMG) - Sierra Summit, Evoked Potential


  • Headphones, Inserts, Bone Transducer
  • Condensation, Rarefaction, Alternating
  • Click, Tones, PIP 202, PIP 212
  • WAV, Trigger-In, Trigger-Out


Pattern VEP, Flash VEP, ERG, EOG, Trigger-In, Trigger-Out
  • VEP Protocols: Pattern VEP, Flash VEP, ERG, EOG, Trigger-In, Trigger-Out
  • Selectable Fields, Check Sizes and Targets
  • Get accurate results with any external LCD monitor with the Calibration Sensor


SEP, Dermatomal SEP, Interleave SEP, Trigger-In, Trigger-Out
  • Custom Trace Labels
  • Advanced Stim Modes


Perform an entire NCS from the palm of your hand with the new and improved StimTroller Plus™

  • Reinforced housing and stainless steel mechanics
  • Controls intensity, pulse width, distance, nerve selection, site selection, trace selection, and more
  • Adjust the angle and distance between probes or remove them to attach electrodes, needles or other stimulators

Simple and Reliable Hardware Interface

  • The Summit Base Unit keeps things simple with programmable, protocol-specific function keys and control dials that are built to last

Intuitive and Sophisticated Software

  • The Sierra software is rich with features designed to improve accuracy and reduce testing time
  • The smart and flexible user interface can fit your workflow and expand your capabilities
Sierra Summit NCS+ Nerve Conduction Study, EDX, electrodiagnostics

StimTroller Plus for EMG

Controls exactly where you need them - next to your needle

Control gain, sweep, run/stop, playback and volume

StimTroller Plus for NCS

Perform an entire NCS from the palm of your hand

Control intensity, pulse width, distance, nerve selection, site selection, trace selection and more

Precise and responsive controls

Simplified interface

Programmable protocol-specific function keys and knobs

Included Hardware and Software
Sierra 2-channel EMG / EP / NCS / NMUS Amplifier with Summit Base Unit, laptop, and handheld StimTroller.

The Sierra Summit system includes the following hardware and software items

  • Base Unit with dedicated keypad and knob controls (requires a computer)
  • Dual high-power speakers with software controlled equalizer
  • Handheld StimTroller Plus™ (3 programmable buttons, remote stimulation and control)
  • 112 Channel Amplifier Configurations
  • EMG with spontaneous, volitional, and interference pattern
    • Unlimited buffer storage (buffer length up to 10 minutes)
    • Replay with audio
    • Buffer length up to 10 minutes
    • Programmable muscle scoring
    • EMG snapshots within reports
    • Motor unit analysis (manual, suggested template, or automatic online or offline)
    • Interference pattern analysis (clouds)
    • Comparison to reference values
  • EMG Guided Injection Protocol
  • NCS (Motor, Sensory, Mixed, Inching, F Wave / H-Reflex)
  • AnatomyVIEW™
  • Side-to-Side Comparisons (NCV, F, H, EP)
  • Blink Reflex
  • RNS (1 or 2 channel acquisition)
  • SEP and SEP Interleave (upper, lower, dermatomes)
  • Autonomic Studies
    • Heart Rate Variability (RR Interval)
    • Sympathetic Skin Response (SSR)
  • Programmable Study Lists and Navigator
  • Tabular Data Summary View
  • QuickReport™ MS Word® based report generator
  • Auto Findings Composer (automatic comparison to norms and creation of sentences for NCS, EMG and EP findings)
  • EP Analysis (add, subtract, average, grand average, invert)
  • EMG to AVI Converter (convert EMG to video/audio files)
  • DataLAB™ (calculate user-defined relationships)
  • ASCII Output Utility (all test protocols)
  • CadLink™ Database (management of patient files and user settings)
  • Screen + video capture tools
  • Internal Calibration Signals
  • Hardware Diagnostics Suite (diagnostic routines for the amplifier, electrical stimulator and keypad)
  • Electrode Continuity Check (built into amplifier)
  • Comprehensive Application Help Topics
  • Soft-sided Carrying Case
  • Starter Electrode Kit
  • Reader Software
Optional Hardware and Software

Optional Hardware

  • 2nd Electrical Stimulator
  • Skin Temperature Probe
  • Reflex Hammer
  • Trigger Out/In Interface Cable (3.5mm stereo to 2x RCA)
  • Amp/Stim Switchbox (Injection Studies)
  • LED Goggles
  • Remote Input Box and cable (3-12 channel amplifier)
  • Ring/Bar Switch Box
  • VEP Monitor
  • USB Footswitch

Optional Software

  • CadLink™ Server Software (centralized data storage and administration of user settings for all Summit acquisition and reader systems on the network)
  • Single Fiber and Macro EMG
  • Motor Unit Number Estimation (MUNE)
    • Assisted Incremental Technique
    • Multiple Point Stimulation Technique
  • P300
  • VEP – includes LCD calibration sensor
  • HL7 Interface for EMR connectivity
  • Data Interface Toolkit (API for developers)