BMA-200 AC/DC low-noise, portable, battery operated, single-channel amplifier

High-performance portable bioamplifier

BMA-200
Product Category: Amplifiers
Part No.: 08-03000

The BMA-200 is a portable, battery operated amplifier for EEG, ECG, EMG, and other extracellular applications. The BMA-200 features a wide gain range, sharp cutoff bandpass filters, an AC calibrator, and a built-in audio amplifier and speaker for monitoring the signal. Stimulus delivery to the electrodes is accomplished by a front-panel switch, or via an external logic signal. True DC response is switch-selectable, with a variable DC offset control. Low-power circuitry contributes to long operating time between charges, or the unit can be operated with the included AC adapter. It features stable DC operation and includes adjustable DC offset.

A standard input cable is included which is compatible with a wide range of electrode lead-wires. Active head-stages are also available for microelectrode applications..

  • Input type and impedance: Differential instrumentation amp, > 109 ohms
  • Wideband noise, RTI: <7uV P-P 
  • Common Mode Rejection: >95dB
  • Gain range: 10X - 50,000X, 12-positions 
  • Coupling: AC or DC, switchable
  • Input connector: Amphenol 703-91T-3478-009 7-pin 
  • Input offset adjustment ranges: +2mV, +20mV, +200mV, jumper selectable
  • Voltages at input jack for external devices: +7.2V, 20mA max current
  • AC calibrator: 1mV P-P square wave, approx. 10Hz
  • Low-pass filter: 100Hz - 50kHz, 6-positions
  • High-pass filter: DC - 300Hz, 6-positions
  • Filter type, slope: Butterworth, flattest response, -12dB/octave
  • Stim/record input: TTL negative logic, or switch closure
  • Stimulus inputs (rear panel): 2mm (0.080”) pin jacks
  • Audio amplifier: 200mW, built-in mylar speaker
  • Audio output connector: 3.5mm stereo mini-phone jack
  • Output connector (rear panel): BNC jack
  • Operating time between charging: approx. 24 hours
  • Power adapter/charger: 24VDC 
  • Dimensions: 6W x 1.75H x 7D inches, 15 x 4.5 x 18 cm

Note 1: Not to be used for human life support applications.

  • For all extracellular recording applications
  • Battery or AC operation
  • Low noise, wide gain range
  • Built in audio amp and speaker
  • True DC response with offset
  • Rugged laboratory or field amplifier
  • Stimulus passing to electrodes
  • Isolation head-stage (ISO-Z) and high-impedance head-stage (HS-1) are available

Accessories

Alligator clip electrode leads, set of 3

Alligator clip electrode leads, set of 3

Part No. 10-02065

Color-coded, solid copper miniature alligator clip leads. 39" (1m) long, terminated with 1.5mm Touch-Proof plug. Application: animal ECG recording.

BMA-200 Filter Mod

Part No. 08-03120

Custom modification to BMA-200 bandpass filter, price per setting/ change

BMA-200-CH(12V)

Part No. 08-03119

Battery charger for BMA-200, 12V input

Replacement battery charger for BMA-200

BMA-200-CHG

Part No. 08-03111

Replacement battery charger for BMA-200, universal input

BMA-200/BAT

BMA-200/BAT

Part No. 08-03110

Replacement NiMH battery packs for BMA-200, pack of 2

Connector for BMA-200, BMA-400, BMA-931, CT-1000.

BMA-931/CON 7-pin amplifier input plug, each

Part No. 10-02040

Unwired input connector for BMA-200, BMA-400, BMA-931, CT-1000. Use this plug for making custom input cables.

BNC patch cable, 20' long

BNC-20

Part No. 10-10012

BNC-BNC patch cable, 20' long

BNC patch cable, 3' long

BNC-3

Part No. 10-10010

BNC-BNC patch cable, 3' long

BNC patch cable, 6' long

BNC-6

Part No. 10-10011

BNC-BNC patch cable, 6' long

D-482 ECG, EMG electrode

D-482 ECG, EMG electrode

Part No. 10-02066

Disposable pre-gelled ECG, EMG electrode, 1" (2.5cm) dia, pack of 150

E-422 Snap-type electrode leads, set of 3

E-422 Snap-type electrode leads, set of 3

Part No. 10-02063

Color-coded standard snap-type leads for disposable ECG-type electrodes. 39" (1m) long, terminated with 1.5mm Touch-Proof plug. Set of 3. Does not include electrodes.

High-impedance head stage for BMA-931, BMA-200, BMA-400, 2mm Pin-jacks input.

HS-1 Head Stage

Part No. 10-02030

High-impedance head stage for BMA-931, BMA-200, BMA-400, 2mm Pin-jacks input.

Input cable for all CWE amplifiers, including BMA-200, BMA-400, BMA-931, and proAmp-8.

ICA-400 Input Cable

Part No. 09-03112

Standard input cable for all CWE amplifiers, including BMA-200, BMA-400, BMA-931, and proAmp-8.  Inputs (+, -, COM) are 1.5mm Touch-Proof sockets, which accept any of the following electrode leads.
Dimensions: 10' (3m) long

ISO-Z Isolated Head Stage

ISO-Z Isolated Head Stage

Part No. 10-02020

Isolated Head Stage for BMA-931, BMA-200, BMA-400, 1.5mm DIN safety-socket jacks; includes set of 3 snap leads, 1m.

NEE-3 Needle electrode leads, set of 3

NEE-3 Needle electrode leads, set of 3

Part No. 10-02064

Small diameter stainless steel electrode leads. 39" (1m) long, terminated with 1.5mm Touch-Proof plug. Application: animal ECG or EMG recording.

Adapter, 2mm pin jack to 1.5mm DIN safety-socket plug, 5"

PIN-DIN Adapter wire, set of 3

Part No. 10-02051

Adapter, 2mm pin jack to 1.5mm DIN safety-socket plug, 5" (13cm) long (allows use of pin plugs with ICA-400 cable and ISO-Z head-stage, set of 3.  Use for adapting pin-plug terminated leads to 1.5mm Touch-Proof sockets. 

PIN-PLUGS, set of 3

PIN-PLUGS, set of 3

Part No. 10-02050

Unwired pin plugs, 0.080" (2mm) dia., color-coded set of three. Use for wiring custom electrode leads.