Technical Information; Theory Of Operation; Electro-Magnetic Compatibility Tables - Noraxon Ultium EMG System User Manual

Ultium EMG Hardware User Manual

12 Technical Information

12.1 Theory of Operation

The Ultium wireless system is based on a pre-certified transceiver module. This radio module operates
in the 2.4 GHz bands with an output power level of < 100 mW and is based on a proprietary frequency
hopping protocol.
Part 810 Ultium-EMG Sensor
Each EMG transmitter module (Ultium-EMG Sensor part # 810) incorporates one transceiver module
together with an analog front end and supporting circuitry. The #810 EMG Sensor is powered by one
150mAh battery; each is identified by a unique serial number.
The #810 EMG Sensor has 5 patient contact points (applied parts). Two points are standard snap
receptacles for attachment to disposable EKG style electrodes. The snap wires are removable. An
additional 3 patient contact points are metal disks on the bottom of the #810 EMG Sensor enclosure.
The disks are intended to be in contact with bare skin. Double-sided tape secures the sensor to the
patient.
The opposite end of the #810 EMG Sensor has 4 contact pads for recharging its battery and
communication. To recharge the battery, the #810 EMG Sensor is placed inside a charging station. The
device cannot be applied to the patient/subject and charged at the same time.
Part 883 Ultium-EMG Sensor Docking Station
The Ultium-EMG Sensor Docking Station (part #883) is configured to hold up to nine (9) #810 EMG
Sensors. All battery-charging controls are inside the sensor modules. The docking station merely
supplies a 5VDC source of power through a set of spring-loaded pins. The spring-loaded pins make
contact with the charging pads of the #810 EMG Sensor. The 5VDC supply is a medical grade external
power supply by Globtek (model GTM41060)
Part 880 Ultium Receiver
The Ultium Receiver (part #880) consists of a main motherboard and a radio transceiver module. The
Ultium Receiver has no applied parts no applied parts.
no applied parts no applied parts
The Ultium Receiver interfaces to a PC and is powered via a USB port.
The transceiver in the #880 Ultium Receiver can communicate with up to sixteen (16) #810 EMG
Sensors.

12.2 Electro-Magnetic Compatibility Tables

Guidance and manufacturer's declaration – electromagnetic emissions
The Ultium System is intended for use in electromagnetic environment specified below. The customer or the user of the
Ultium System should assure that it is used in such an environment.
Emissions Test
(Rev J)
Compliance Electromagnetic environment - guidance
38