
Copyright © Shimmer 2017
Realtime Technologies Ltd EMG User Guide
All rights reserved Rev 1.12
6
2. General Information
2.1. Safety Information
As a precaution it is important to note that the EMG leads are not to be applied to the subject's body
while unit is in a USB dock or multi-charger.
2.2. Pre-Requisites
A Shimmer3 EMG Unit programmed with appropriate firmware. For example, LogAndStream
(v0.6.0 or greater) can be used to stream data over Bluetooth and/or log data to the SD card
or SDLog (v0.12.0 or greater) can be used to log data to the SD card; both are available for
download from www.shimmersensing.com.
Five DIN snap leads.
-9-inch and 18-inch leads are shipped with the EMG Development Kit and EMG
Bundles.
-Replacements can be purchased from www.shimmersensing.com.
Surface EMG electrodes.
-Disposable electrodes are shipped with the EMG Development Kit and EMG Bundles.
-For replacements, see www.shimmersensing.com. Alternatively, the Covidien
Kendall Disposable Surface EMG/ECG/EKG electrodes 1" (24mm) or Covidien Kendall
Disposable Surface EMG/ECG/EKG electrodes 1 3/8" (35mm), available on www.bio-
medical.com with product codes 'BRD H124SG' and 'BRD H135SG', respectively, and
the Ambu Blue Sensor T electrodes, available from various suppliers, are all suitable
options and have been validated for use with Shimmer equipment.
2.3. EMG Unit Specification Overview
For specifications on the general Shimmer3 part, (i.e. microprocessor, radio, data storage
and inertial sensors) of the Shimmer3 EMG Unit, please refer to the Shimmer User Manual.
Gain: Configurable (1, 2, 3, 4, 6, 8, 12).
Data rate: software configurable (125, 250, 500, 1000, 2000, 4000, 8000 SPS).Input
differential dynamic range
: approx 800 mV (for gain = 6).
Bandwidth
: 8.4 kHz
Ground: Wilson Type Driven Ground
Input Protection: ESD and RF/EMI filtering; Current limiting; inputs include defibrillation
protection (survive only, not repeat). NOTE: For inputs Ch1N and Ch1P the defibrillation
protection is not present to facilitate Respiration demodulation when the EMG Unit is
configured as ECG Unit, refer to Shimmer3 ECG Unit for details.
Connections: Input Ch1N, Input Ch1P, Input Ch2N, Input Ch2P, Reference (Ref).
oAll Hospital-Grade 1mm Touchproof IEC/EN 60601-1 DIN42-802 jacks.
Calculated specification; exact value subject to environmental and component variation. ADS1292R is
optimized for power with a differential input signal of approx. 300 mV when gain = 6.
Specifications from ADS1292R datasheet; exact value subject to environmental and component variation.