EXT-02F – Extracellular Amplifier

Npi's EXT-02FDual/Single Channel Extracellular Amplifier with differential inputs that provide high input resistance through BNC connectors or optionally with headstages.

Overview
Specifications
Links

Advantages of the EXT-02F

Capture any extracellular signal (single units, EEG, ECG, etc.) utilizing adaptable filter configurations.
The integrated audio monitor facilitates cell identification.
Record from freely moving subjects using npi’s mini headstages.
An alternative option is the EXT-02B, which features a switchable headstage (for recording/stimulation).
It is also offered as a module compatible with the EPMS-07 system.

Dual/Single Channel Amplifier

The EXT-02F is equipped with two differential inputs that provide high input resistance through BNC connectors or optionally with headstages. The output voltage signal can be accessed in either AC or DC mode with adjustable gain (up to 10k) and is filterable. The system is encased in a desktop metal housing with an external power supply.

Two LEDs indicate when the amplifier is nearing its linear range limit, and an analog balance monitor simplifies offset control. Additionally, an audio monitor enables acoustic oversight of the recorded signal. The EXT-02F is also available in a one-channel configuration.

The amplifier is appropriate for single unit recordings as well as EEG and ECG data collection.

Features

Two differential inputs
Headstage option available
AC or DC operational modes
Gain capability up to 10k
Lowpass and highpass filtering options
Available in one or two channel configurations

Specifications of the EXT-02F

HEADSTAGES (optional):

Operating voltage ±12 V; Size (approx.): 65x25x25mm
holding bar diameter 9 mm, length 150 mm
Electrode connector: BNC with driven shield
Ground connector: 2.4 mm connector or headstage enclosure
Reference connector: gold-plated SMB, grounded shield
Input resistance: >1012 Ω
Differential input: cmr >90 dB at 1 kHz (tested with 0 Ω input resistance).

AC/DC OUTPUT: filtered and amplified, impedance 50 Ω

DIFFERENTIAL INPUT:

BNC / SMB connector with headstage or BNC connectors
CMR >90 dB
GND position for each INPUT
INPUT RESISTANCE (without headstage):
10E+6 Ω , range ±1 V (lower input resistance on request)

LOW PASS FILTER: 30, 100, 500, 700, 900, 1.3k, 1.5k, 1.7k, 3k, 10k, 20k Hz

HIGH PASS FILTER: OFF, 3, 30, 100, 300, 400, 500, 600, 800, 1k, 3k, 10k Hz

AUDIO MONITOR:

PITCH or NOISE, DC or AC
NOISE mode with THRESHOLD
channel selected by switch
connector external speaker / line

GAIN: 10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k

OFFSET COMPENSATION: Potentiometer with 2 ranges: ±0.1 V or ±1 V

MONITORS:

Impedance: 250 Ohms
GAIN: BNC connector, 1 V per step, +1 V….+7 V
FILTER: BNC connector, 1 V per step, -8 V….+7 V
COMMAND: BNC connector, sensitivity: x10

ANALOG BALANCE MONITOR: ca. ±30 mV

EXTERNAL POWER SUPPLY: AC output; 12-18V, 1 A

DIMENSIONS: 245 x 200 x 90 mm

Ordering Information

EXT-02F-2 Extracellular amplifier with two channels, without headstages
EXT-02F-1 Extracellular amplifier with one channel, without headstage
EXT-HS Differential headstage for extracellular amplifier
PPH-0P-BNC Electrode holder BNC, without port
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.

You can also visit site of the manufacturer.