PLUGSYS Electroencephalogram (EEG) Amplifier Module (EEGA)
Used to amplify EEG signals in the PLUGSYS system
This Electroencephalogram (EEG) Amplifier Module (EEGA) is used to amplify EEG signals. A floating input circuit is used to avoid hum and grounding problems. The filters are for EEG signals up to 70 Hz. The analog EEG signal is available at a BNC connector on the front panel and also internally on the PLUGSYS system bus. Both outputs can be used for recording on a chart recorder or for data acquisition. A square-wave signal generator with amplitudes of 50 µV and 100 µV is incorporated for calibration.
| Specifications | 73-1770 |
|---|---|
| Calibration | Square-wave signal generator with amplitudes of 50 |
| Commond Mode Rejection | 106 dB |
| Connector | DIN 41612, 96-pin VG |
| Display | Bar graph 0.75 V/LED |
| Filter Indication | By green LEDs on front panel |
| Gain Trimmer in Position x0.5 | Switch x1 x10 x100
In Position x0.5 100 to 500 1000 to 5000 10000 to 50000 |
| Gain Trimmer in Position x1 | Switch x1 x10 x100
In Position x1 200 to 1000 2000 to 10000 20000 to 100000 |
| Gain Trimmer in Position x2 | Switch x1 x10 x100
In Position x2 400 to 2000 4000 to 20000 40000 to 200000 |
| High-Pass Filter | (LOW CUT OFF) 10 Hz, 5 Hz, 2.5 Hz, 1 Hz |
| Input | Floating differential input, isolated barrier internally clamped to 300 V, with protection against static discharges and 10 kHz input filter for HF suppression |
| Input Connector | 5-pin binder socket with screw lock; pin connection corresponds to those of standard 3-pin EEG input cable |
| Input Impedance | 1010Ω |
| Low-Pass Filter | (HIGH CUT OFF) 70 Hz, 40 Hz, 20 Hz, 10 Hz |
| Output | BNC connector on front panel (±10 V) output voltage also available on PLUGSYS bus |
| PLUGSYS Width* | 2 slot units |
| Power Supply | 5 V/600 mA, through connector from PLUGSYS bus system |
| Quick Start | For rapid discharge of coupling capacitors by pressing QUICK START key |
| Recorder Output | Internal output is connected to bus system via jumpers; EEG signal is connected to recorder via Recorder Output Module (ROM). |
| Recorder Output 2 | Also possible to connect recorder directly to BNC connector “EEG OUT” at front panel |