Model 1700 amplifier – A-M Systems

The A-M Systems Model 1700 amplifier is a four-channel AC differential amplifier designed for high-fidelity extracellular recording. It offers high gain, low input impedance, excellent common-mode rejection and effective attenuation of mains interference. It is particularly suitable for recording evoked potentials, EEG, EMG, EKG and ERG signals, as well as amplifying nerve signals from low-impedance electrodes.

Features of the Model 1700 Amplifier – A-M Systems

4 independent channels in a single enclosure
Standard gain ×100, ×1000, ×10,000 (customisable)
Low noise : ~1.0 µV peak-to-peak (10 Hz-10 kHz)
High common-mode rejection (> 70 dB at 60 Hz; typ. > 80 dB)
Effective notch filter (> 110 dB at 50/60 Hz)
High input impedance (> 10¹² Ω ‖ 50 pF)
Very low bias current (~3 pA typical, max 20 pA).
Screen-driven cable to reduce capacitance
Adjustable high-pass and low-pass filters (Butterworth 2ᵉ order)
Stim/Record modes via DB9 connector
110 V/60 Hz or 220 V/50 Hz power supply (factory setting)

Technical characteristics of the Model 1700 Amplifier – A-M Systems

Caractéristique	Valeur
Channels	4 independent amplifiers
Gain	×100, ×1,000, ×10,000 (standard, can be modified)
Noise	1.0 µV peak-to-peak (10 Hz-10 kHz)
Common mode rejection	> 70 dB at 60 Hz (typ. > 80 dB)
Notch filter	> 110 dB at 50/60 Hz
Input impedance	> 10¹² Ω ‖ 50 pF
Polarisation current	3 pA typical, 20 pA max
High-pass filters	0.1, 1, 10, 100, 300 Hz
Low-pass filters	500 Hz, 1 kHz, 5 kHz, 10 kHz, 20 kHz
Crosstalk	90 dB at 1 kHz
Output	± 11 V, 5 mA, Output resistance > 5 Ω
Scanning rate	Rise speed 2 V/µs
Low impedance (electrodes)	< 1.5 MΩ
Connectors	DB9 input/stimulus/relay
Dimensions (H×D×W)	12.1 × 28.6 × 43.2 cm
Weight	≈ 8.6 kg (19 lb)
Accessories included	4 x 0.9 m input cables, rack mounting kit, manual
Guarantee	3 years