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EXT-16DX – Extracellular Amplifier

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16 Channel Extracellular Amplifier

  • Miniature headstages for in vivo recording
  • Easy setting of amplification and filters
  • choose one channel as common reference signal

Features

  • Extracellular recordings with up to 16 channels
  • Up to 16 gain stages, 16 high pass and 16 low pass filter corner frequencies; set by rotary switch
  • Customized configuration for all channels (set by factory)
  • Digital display of selected channel, gain, high pass and low pass filter corner frequency
  • Remote operation with digital I/O card or manual operation with switches and push button
  • Brightness of displays adjustable for simultaneous fluorescence measurements
  • Referenced or single ended recording mode (set by switch)
  • External npi power supply or rechargeable batteries for extra-low-noise operation
  • Extracellular signals available at BNC connectors or at SCSI/SubD connector for direct linking to data acquisition card

With R/I-T1DX

  • Electrode resistance test separately for each electrode
  • Current injection (up to ±1 µA, bipolar) for each electrode

Headstages

We build miniature headstages for the EXT-16DX amplifier in different configurations. The user can select from different cables, connectors, additional features (acceleration sensor, LEDs, etc.).

Here are some examples:

 

Standard EXT-16 headstage with DIL connector and R/I option:

Headstage for pigeons with special connector and 16g acceleration sensor:

Headstage with 16 relays for individual stimulation/recording:

16 channel headstage with Omnetics connector and additional stimulation lines:

Headstage with special geometry:

Please contact us for further information and prices.

Technical Data

Input >1012 Ω, range ±2 V
Differential Input CMR >70 dB at 1 kHz (tested with 0 Ω input resistance)
Input Capacitance 10 pF
CHANNEL Monitor -8V…+7V; +13V in single ended mode
HIGHPASS Filter single pole, attenuation: -6 dB / octave, corner frequencies (Hz): DC, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100, 300, 500, 800, 1k, 3k; selected by rotary switch
HIGHPASS Monitor -8V…+7V
LOWPASS Filter single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 20, 50, 100, 200, 300, 500, 700, 1k, 1,3k, 2k, 3k, 5k, 8k, 10k, 13k, 20k; selected by rotary switch
LOWPASS Monitor -8V…+7V

GAIN:
10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k; selected by rotary switch

GAIN Monitor:
+1V…+10V

Output:
range: ±10 V into 1 kW / ±1 V into 50 W

External power supply:
115/230 Volt AC, 60/50 Hz, fuse 1.6/0.8 A, slow

Dimensions:
19” rackmount cabinet
19” (483 mm), 10” (250 mm), 3.5” (88 mm)

Headstage Size without housing, approx. 40 mm x 18 mm, with holding bar

Ordering

Part No. Description
EXB-16DX 16 channel extracellular amplifier (requires headstage and power supply)
EXB-16DX-8 8 channel extracellular amplifier (requires headstage and power supply)
EXB-16DX-4 4 channel extracellular amplifier (requires headstage and power supply)
EXB-16B 16 channel amplifier/filter (no headstage, just BNC inputs and outputs, requires power supply)
EXT-PWR-03D External power supply for EXT-16DX, EXT-16B or R/I-T1DX (can drive one EXT-16DX and one R/I-T1DX simultaneously)
R/I-T1DX Electrode Resistance Test and Current Injection system for EXT-16DX

Downloads

Manuals EXT-16DX manual
Brochure EXT-16DX RI-T1DX

ABOUT

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

  • Extracellular recordings with up to 16 channels
  • Up to 16 gain stages, 16 high pass and 16 low pass filter corner frequencies; set by rotary switch
  • Customized configuration for all channels (set by factory)
  • Digital display of selected channel, gain, high pass and low pass filter corner frequency
  • Remote operation with digital I/O card or manual operation with switches and push button
  • Brightness of displays adjustable for simultaneous fluorescence measurements
  • Referenced or single ended recording mode (set by switch)
  • External npi power supply or rechargeable batteries for extra-low-noise operation
  • Extracellular signals available at BNC connectors or at SCSI/SubD connector for direct linking to data acquisition card

With R/I-T1DX

  • Electrode resistance test separately for each electrode
  • Current injection (up to ±1 µA, bipolar) for each electrode

Headstages

Headstages

We build miniature headstages for the EXT-16DX amplifier in different configurations. The user can select from different cables, connectors, additional features (acceleration sensor, LEDs, etc.).

Here are some examples:

 

Standard EXT-16 headstage with DIL connector and R/I option:

Headstage for pigeons with special connector and 16g acceleration sensor:

Headstage with 16 relays for individual stimulation/recording:

16 channel headstage with Omnetics connector and additional stimulation lines:

Headstage with special geometry:

Please contact us for further information and prices.

Technical Data

Technical Data

Input >1012 Ω, range ±2 V
Differential Input CMR >70 dB at 1 kHz (tested with 0 Ω input resistance)
Input Capacitance 10 pF
CHANNEL Monitor -8V…+7V; +13V in single ended mode
HIGHPASS Filter single pole, attenuation: -6 dB / octave, corner frequencies (Hz): DC, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100, 300, 500, 800, 1k, 3k; selected by rotary switch
HIGHPASS Monitor -8V…+7V
LOWPASS Filter single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 20, 50, 100, 200, 300, 500, 700, 1k, 1,3k, 2k, 3k, 5k, 8k, 10k, 13k, 20k; selected by rotary switch
LOWPASS Monitor -8V…+7V

GAIN:
10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k; selected by rotary switch

GAIN Monitor:
+1V…+10V

Output:
range: ±10 V into 1 kW / ±1 V into 50 W

External power supply:
115/230 Volt AC, 60/50 Hz, fuse 1.6/0.8 A, slow

Dimensions:
19” rackmount cabinet
19” (483 mm), 10” (250 mm), 3.5” (88 mm)

Headstage Size without housing, approx. 40 mm x 18 mm, with holding bar

Ordering

Ordering

Part No. Description
EXB-16DX 16 channel extracellular amplifier (requires headstage and power supply)
EXB-16DX-8 8 channel extracellular amplifier (requires headstage and power supply)
EXB-16DX-4 4 channel extracellular amplifier (requires headstage and power supply)
EXB-16B 16 channel amplifier/filter (no headstage, just BNC inputs and outputs, requires power supply)
EXT-PWR-03D External power supply for EXT-16DX, EXT-16B or R/I-T1DX (can drive one EXT-16DX and one R/I-T1DX simultaneously)
R/I-T1DX Electrode Resistance Test and Current Injection system for EXT-16DX

Downloads

Downloads

Manuals EXT-16DX manual
Brochure EXT-16DX RI-T1DX