EXT-02F

The EXT-02F has two differential inputs with high input resistance via banana jacks, BNC connectors or optionally with headstages. The output voltage signal is available either AC, filtered with variable gain (up to 10k) or DC with an amplification factor of ten. The system is housed in a desktop metal case with an external power supply.
Two LEDs indicate whether the amplifier is running out of its linear range and an analog balance monitor makes the control of offsets easy. Furthermore, an audio monitor allows acoustic control of the recorded signal. The EXT-02F is also available as one-channel version.

The amplifier is suitable for single unit recording as well as for EEG and ECG recordings.

Specifications

HEADSTAGES (optional)
Operating voltage ±12 V; Size (approx.): 65 × 25 × 25 mm
holding bar diameter 8 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).

DIFFERENTIAL INPUT:
BNC / SMB connector with headstage
or  4 mm banana jacks
or  BNC connectors
CMR >70 dB
AC / 0 / DC switch for each input

INPUT RESISTANCE (without headstage):
>10E+12 Ω, range ±1 V (lower input resistance on request)

DC OUTPUT ×10 mV:
impedance 50 Ω

AC OUTPUT:
filtered and amplified impedance 50 Ω

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

LOW PASS FILTER:
1, 10, 30, 100, 300, 1k Hz

HIGH PASS FILTER:
0.1, 0.3, 1, 3, 10, 30 Hz

OFFSET COMPENSATION:
10 turn potentiometer
2 ranges: ±0.1 V or ±1 V

ANALOG BALANCE MONITOR:
ca. ±30 mV

AUDIO MONITOR:
PITCH or NOISE, DC or AC
channel selected by switch
connector external speaker / line

EXTERNAL POWER SUPPLY:
AC output; 14V, 0.5 A

DIMENSIONS:
245mm × 200mm × 90mm

Options and additional accessories (at additional costs)

EXT-02F amplifier, two channels, without headstages

EXT-02F-1 amplifier, single channel, without headstage

EXT-HS  differential headstage for extracellular amplifier

EXT-02F-1

EXT-HS