Model 1800 amplifier – A-M Systems

The A-M Systems Model 1800 amplifier is a 2-channel AC differential amplifier with preamplifier (headstage), designed for extracellular recording and stimulation applications with high-impedance microelectrodes.

Neuroprobe Amplifier A‑M Systems Model 1800

Description of the A-M Systems Model 1800 amplifier

Ideal for recording single-cell action potentials (spikes), EEG, EMG, EKG, ERG and evoked potentials in research and teaching laboratories.

Features of the A-M Systems Model 1800 amplifier

2 independent channels, including headstages
Fixed gain ×100, ×1,000, ×10,000
Low noise: ~1.0 µV peak-to-peak (10 Hz-10 kHz)
Common mode rejection > 80 dB (up to 110 dB depending on source)
Effective notch filter (> 25 dB at 50 Hz / > 30 dB at 60 Hz)
High input impedance > 100,000 MΩ
Low bias current ± 3 pA typical, max ± 20 pA
High-pass filters: 0.1, 1, 10, 100, 300 Hz
Low-pass filters: 500, 1 k, 5 k, 10 k, 20 k Hz
Modes: Record, Stimulate, Impedance check (in situ)
Current measurement during stimulation via internal 1 kΩ resistor
Sampling heads included with 1.5 m rigid cables
Power supply: 110 V/60 Hz or 220 V/50 Hz
Standard 3-year warranty

Technical characteristics of the A-M Systems Model 1800 amplifier

Caractéristique	Valeur
Channels	2 differential amplifiers with headstages
Gain	×100, ×1 000, ×10 000
Noise	1.0 µV p-p typical (10 Hz-10 kHz)
Common mode rejection	> 80 dB (up to 110 dB at 60 Hz)
Notch filter	> 25 dB at 50 Hz, > 30 dB at 60 Hz
Input impedance	> 100,000 MΩ
Polarisation current	± 3 pA typical, ± 20 pA max
High-pass filters	0.1 / 1 / 10 / 100 / 300 Hz
Low-pass filters	500 Hz / 1 k / 5 k / 10 k / 20 k Hz
Mode selection	Record / Stimulate / Impedance Check
Internal resistance (Stim/Impede.)	1 kΩ (current/stimulation)
Headstage	0.535″ Ø × 4″, rod 4.7 mm, cable 1.5 m
Power supply	110 V / 60 Hz or 220 V / 50 Hz
Dimensions (W×H×D)	43.2 × 12.1 × 28.6 cm
Consumption	< 5 W
Accessories included	2 headstages, cables, rack mount, manual
Guarantee	3 years