The GPI Bed is the primary connection between the amplifiers and the computer. Analog signals from other devices may also be interfaced with your computer via the GPI Bed through the 3.5mm phono jack. The GPI Bed comes complete with a GPI Connection Cable and a DC power supply.

SPÉCIFICATIONS

Number of Input Channels: 16 Number of Analog Output Channels: 1 Maximum Channels Displayed: 8 Maximum Input Voltage: ±10V A/D Resolution: 12bit, (16bit option) Input Accuracy: 0.0764% of FSR Input Impedance: 100GW Input Coupling: DC External Trigger: ±10V @ 5mA Maximum Sample Rate: 1000samples/sec/channel Minimum Sample Rate: 100sec/sample Filters: 50/60Hz notch (software) Gain Ranges: 0.5 through 100 Baseline Adjustment: Auto-scaling in software Physical Size: Amplifiers: 0.660"x5.5"x3.5" GPI Bed: 11.5"x6.25"x1.875" Weight: Bio Amp: 0.48lbs Basic Amp: 0.40lbs GPI Bed: 1.84lb Digital Filters: Available through software Dimensions: 11.5”x6.25”x1.875” Weight: 1.84lbs

COMPUTER REQUIREMENTS

32MB of RAM 20MB of Hard Disk Space Pentium Class Microsoft® Windows 95/98/98SE, XP or 2000 CD-ROM Drive PCI, PCMCIA or USB Port

MODEL 70702 - BIOPOTENTIAL AMPLIFIER
The Biopotential Amplifier is used to input physiological signals, such as ECG, EMG, EEG and GSR. It also provides gain for physiological signals as well as subject isolation for subject safety. It has built-in calibration values of +/- 4mV. Eliminating the need for several types of amplifiers, this amplifier uses a software program to configure the filtering for various types of signals.
Biopotential Amplifier Specifications
Signal Range: ±10V Input Coupling: Selectable AC/DC Isolation: 1500VRMS, ±2000VDC Calibration Signals: ±4mV Isolation Leakage Current: 2mARMS Max Fixed Gain: 2400 Variable Gain: Available through software Filters: Second order low pass (40db/decade rolloff) Filter Cutoffs: ECG: 45Hz EEG: 100Hz EMG: 2700Hz Action Potential: 5700Hz

MODEL 70706 BASIC AMPLIFIER
The Basic Amplifier is used to input DC signals from transducers and sensors.
Basic Amplifier Specifications
Signal Range: ±10V Input Coupling: DC Isolation: None Calibration Signals: None Fixed Gain: 14 Variable Gain: Available through software Supplied Power: ±10V at 25mA Filters: Second order low pass (40db/decade rolloff) Cutoff: 45Hz

MODEL 70712 OXYGEN AMPLIFIER
The Oxygen Amplifer is used to measure dissolved oxygen content generation/utilization experiments. This Oxygen Amplifier is primarily used in Life Science experiments studying pond water health.
Oxygen Amplifier Specifications
Electrode Reference Voltage: -0.8VDC Gain Settings: 250K, 500K, 1.0M, 2.0M Filtering: 8Hz, 2nd order Low pass, 40dB/decade rolloff Output Voltage Range: ±10VDC Setting Time: 90% in 10 sec, steady state in 30 sec.

CAT. NO.	DESCRIPTION
70701	General Purpose Interface (GPI) Bed
70701CBL	GPI connection cable
70702	Biopotential amplifier
70706	Basic amplifier
70712	Oxygen amplifier