MA300 System Specifications
Each MA300 EMG system includes preamplifier electrodes for each channel, suitable for surface EMG recordings (preamplifiers for disposable and fine-wire electrodes are also available). Each system includes an output signal cable suitable for almost all data collection connections (BNC options are available). A full color manual is included with each system that contains specifications, tutorial, user instructions, as well as all necessary connection and interface information.
Compare the features offered by our EMG systems to "biofeedback" systems from other manufacturers and you will find that the the MA300 range of systems are unequaled in any gait, motion and research environment. If you record EMG data from human subjects then please note that all MA300 systems have received US FDA 510(k) clearance (Sec. 890.1375) for use as a diagnostic electromyograph for medical purposes. Unlike competing EMG systems with "biofeedback" approvals, there are no FDA restrictions on connecting an MA300 to human subjects.
System |
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| Dedicated EMG channels | 6, 8, 10 or 16 |
| Low pass filter (anti-alias): | 350, 500, 750, 1000, 1250, 1500, 1750 and 2000 Hz. (MA300-18, 22 & 28 only) |
| EMG signal output mode: | Raw Signal (±5 Volts low impedance source) |
| EMG Bandwidth: | (-3dB) DC to 2,000Hz, distortion less than 1% (MA300-XII and XVI are DC to 1000Hz) |
| EMG channel sample rate | 5,000 samples per second per channel. |
| Calibrated signal gains: | 10 settings - 500uV pk-pk (×10,000) to 25 mV pk-pk (×200) |
| Signal to Noise ratio: | 50dB typical. |
| Cross talk (adjacent channels): | 50dB typical. |
| Additional Inputs | 4 channels, ±2.5 Volts input, DC to 120 Hz. (MA300-XII, 18, 22, and 28 only). |
| Indicator Lights: | Power OK, CRC error, No Signal, Individual event switch |
| Output Connector: | 25-pin male D-Sub (BNC cable available on request) |
| Interconnecting cable: | 18 meters of 2.66mm RG174 coaxial cable |
EMG Backpack Characteristics |
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| Input Impedance: | 5K ohm, at the 6 pin Harwin input connector |
| Input max: | 40 millivolts RMS. |
| Output Impedance: | 100 ohms, 10% ±5 Volts max at 10 ma |
| Over Voltage Protection: | ±10Volts Zener clamped |
Dedicated Event Channels (MA300-18, 22 and 28 only) |
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| Number of input switches: | Eight, using miniature pressure sensitive switches |
| Output level: | Two analog channels each encoding four switch closures. |
| Encoding Method: | Binary uniquely identifying each switch closure. |
Auxiliary Event Support |
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| Number of input switches: | Four, using miniature pressure sensitive switches or FSRs |
| Output level: | 0 to 5V DC. |
| Encoding Method: | On/Off voltage level. |
Research Inputs (MA300-XII, 18, 22 and 28 only) |
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| Number of research input: | Four |
| Research signal Bandwidth: | (-3dB) DC to 120Hz (distortion less than 1%) |
| Maximum input level: | 2.6V pk-pk. |
| Signal to Noise ratio: | 40dB typical. |
| Cross talk (adjacent channels): | 40 dB typical. |
| DC Power available | +5V at 10mA |
Interface Unit Power Characteristics |
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| Connector: | 3 pin IEC622 style |
| Line Voltage: | 100-240 Volts AC auto-selected (50/60 Hz) |
| Line Voltage Tolerance: | +13% and -10% |
| Line Frequency: | 50Hz or 60Hz |
| Consumption: | 50 Watts (maximum) |
Overall System Dimensions |
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| Subject Backpack: | 1lb, 4.25" Wide, 5.25" Long, 1.75" Deep. |
| Desktop Unit: | 8lbs, 12" High, 2.5" Wide, 12" Deep. |
Environmental Specifications |
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| CLASS I Equipment energized from an external power source. | |
| TYPE B protection against electric shock. | |
| IP RATING 32 - Ordinary enclosed equipment, no protection against ingress of water. | |
| Equipment not suitable for use in the presence of a FLAMMABLE ANAESTHETIC MIXTURE WITH AIR OR WITH OXYGEN OR WITH NITROUS OXIDE. | |