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EXT-02B – Extracellular Amplifier

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2 Channel Extracelluar Amplifier

  • Save money with this simpler version of the EXT-02B
  • Record any extracellular signal (single units, EEG, ECG, etc.)
  • Easy upgrade to max. 8 channels
  • For 16 channels look at the EXT-16DX
  • For more filter and gain options look at the EXT-02F
  • Combine with our miniature headstages for in vivo recording

About EXT

In extracellular recording usually very small potentials in the µV range are measured. This requires high amplification and often also filtering.

npi’s range of extracellular amplifiers meet these requirements. They are available as desktop instruments, in a 19” rackmount cabinet or as module for the EPMS modular system. All npi extracellular amplifiers have high pass and low pass filter and gain up to 10000. They allow DC measurements and AC recordings in which offsets are cancelled automatically. Audio monitors and electrode resistance meters are available as well. The use of external power supplies and high quality electronics ensure low-noise recording of small signals.

Models include:

  • analog displays for potential
  • variable gain up to 10k
  • offset and capacity compensation
  • tunable highpass/lowpass filters

Most systems are equipped with a small headstage with high impedance differential inputs to suppress noise and other distortions.

Features

  • Two recording channels with stimulus control, differential INPUTS
  • One power supply for up to four EXT-02 B amplifiers, one REL-08 B and one AUD-08 B system
  • Two different OUTPUTS:
    • DC with GAIN x10 and OFFSET control, range ± 1 V
    • AC with GAIN x10 to x10k, HIGHPASS and LOWPASS filtered
  • HIGHPASS filter (AC): 0.1, 1, 10, 30, 100, 300 Hz
  • LOWPASS filter (AC): 500, 1k, 3k, 5k, 10k, 20k Hz
  • NOTCH filter (AC and DC): 50 Hz or 60 Hz, activated by switch
  • MONITORS (telegraphs) for filters and gain
  • External STIMULUS input with 2 mm banana jacks, STIMULUS CONTROL with switch or TTL signal
  • Data bus connection to AUD-08 B and REL-08 B

Available headstages:

  • Standard headstage with one, two or four channels
  • Standard headstage with direct stimulation through the same electrode
  • Miniature headstage with one, two, four, six or eight channels (via breakout box)
  • Miniature headstage with direct stimulation via separate electrode or switchable
  • Tetrode miniature headstage with four channels

Use the AUD-08B for audio monitoring and the REL-08B for the measurement of the electrode resistance.

Ordering

Part No. Description
EXB-EXT-02B EXT-02B Two Channel Low-cost Extracellular Amplifier (master version)
EXB-EXT-02BS EXT-02B Two Channel Low-cost Extracellular Amplifier (slave version)
EXB-HS Standard Headstage for EXT-2B Amplifier
EXB-AUDIS-08B AUD-08B Audio Monitor System for EXT-02B
EXB-RES-08B REL-08B Electrode Resistance Meter for EXT-02B
EXT-MINI Miniature headstage for EXT-series amplifier. Many different configurations available for in-vivo or in-vitro use, housing and cable options.

Please contact us for further information and prices.

 

 

Technical Data

Input (headstage) >10-12 W, range ±1 V
Differential Input CMR >90 dB at 1 kHz (tested with 0 W input resistance)
Input Capacitance 30 pF
OFFSET compensation set by potentiometer, range: ±1 V
HIGHPASS Filter single pole, attenuation: -6 dB / octave,
|corner frequencies (Hz): 0.1, 1, 10, 30, 100, 300
LOWPASS Filter single pole, attenuation: -6 dB/octave,
corner frequencies (Hz): 500, 1k, 3k, 5k, 10k, 20k
GAIN rotary-switch 10-100-1k-10k
Output range: ±10 V into 1 kW / ±1 V into 50 W
Power Supply 18V, AC, min. 1.5 A
Dimensions 305 x 180 x 105 mm³ (W x D x H)
Headstage
Input (headstage) >1012 W, range ±1 V
Headstage Size 70 x 26 x 26 mm3
Holding Bar length: 150 mm; diameter: 8 mm

Downloads

Manuals EXT-02B manual
Brochures EXT-Series

About EXT

About EXT

In extracellular recording usually very small potentials in the µV range are measured. This requires high amplification and often also filtering.

npi’s range of extracellular amplifiers meet these requirements. They are available as desktop instruments, in a 19” rackmount cabinet or as module for the EPMS modular system. All npi extracellular amplifiers have high pass and low pass filter and gain up to 10000. They allow DC measurements and AC recordings in which offsets are cancelled automatically. Audio monitors and electrode resistance meters are available as well. The use of external power supplies and high quality electronics ensure low-noise recording of small signals.

Models include:

  • analog displays for potential
  • variable gain up to 10k
  • offset and capacity compensation
  • tunable highpass/lowpass filters

Most systems are equipped with a small headstage with high impedance differential inputs to suppress noise and other distortions.

Features

Features

  • Two recording channels with stimulus control, differential INPUTS
  • One power supply for up to four EXT-02 B amplifiers, one REL-08 B and one AUD-08 B system
  • Two different OUTPUTS:
    • DC with GAIN x10 and OFFSET control, range ± 1 V
    • AC with GAIN x10 to x10k, HIGHPASS and LOWPASS filtered
  • HIGHPASS filter (AC): 0.1, 1, 10, 30, 100, 300 Hz
  • LOWPASS filter (AC): 500, 1k, 3k, 5k, 10k, 20k Hz
  • NOTCH filter (AC and DC): 50 Hz or 60 Hz, activated by switch
  • MONITORS (telegraphs) for filters and gain
  • External STIMULUS input with 2 mm banana jacks, STIMULUS CONTROL with switch or TTL signal
  • Data bus connection to AUD-08 B and REL-08 B

Available headstages:

  • Standard headstage with one, two or four channels
  • Standard headstage with direct stimulation through the same electrode
  • Miniature headstage with one, two, four, six or eight channels (via breakout box)
  • Miniature headstage with direct stimulation via separate electrode or switchable
  • Tetrode miniature headstage with four channels

Use the AUD-08B for audio monitoring and the REL-08B for the measurement of the electrode resistance.

Ordering

Ordering

Part No. Description
EXB-EXT-02B EXT-02B Two Channel Low-cost Extracellular Amplifier (master version)
EXB-EXT-02BS EXT-02B Two Channel Low-cost Extracellular Amplifier (slave version)
EXB-HS Standard Headstage for EXT-2B Amplifier
EXB-AUDIS-08B AUD-08B Audio Monitor System for EXT-02B
EXB-RES-08B REL-08B Electrode Resistance Meter for EXT-02B
EXT-MINI Miniature headstage for EXT-series amplifier. Many different configurations available for in-vivo or in-vitro use, housing and cable options.

Please contact us for further information and prices.

 

 

Technical Data

Technical Data

Input (headstage) >10-12 W, range ±1 V
Differential Input CMR >90 dB at 1 kHz (tested with 0 W input resistance)
Input Capacitance 30 pF
OFFSET compensation set by potentiometer, range: ±1 V
HIGHPASS Filter single pole, attenuation: -6 dB / octave,
|corner frequencies (Hz): 0.1, 1, 10, 30, 100, 300
LOWPASS Filter single pole, attenuation: -6 dB/octave,
corner frequencies (Hz): 500, 1k, 3k, 5k, 10k, 20k
GAIN rotary-switch 10-100-1k-10k
Output range: ±10 V into 1 kW / ±1 V into 50 W
Power Supply 18V, AC, min. 1.5 A
Dimensions 305 x 180 x 105 mm³ (W x D x H)
Headstage
Input (headstage) >1012 W, range ±1 V
Headstage Size 70 x 26 x 26 mm3
Holding Bar length: 150 mm; diameter: 8 mm

Downloads

Downloads

Manuals EXT-02B manual
Brochures EXT-Series