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OPERATING INSTRUCTIONS AND
SYSTEM DESCRIPTION FOR THE
DPA-2FL
LOW-NOISE DIFFERENTIAL
AMPLIFIER / FILTER MODULE
FOR EPMS SYSTEMS
VERSION 1.1
npi 2010
npi electronic GmbH, Hauptstrasse 96, D-71732 Tamm, Germany
Phone +49 (0)7141-9730230; Fax: +49 (0)7141-9730240
support@npielectronic.com; http://www.npielectronic.com
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Related Manuals for NPI DPA-2FL
Summary of Contents for NPI DPA-2FL
- Page 1 OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR THE DPA-2FL LOW-NOISE DIFFERENTIAL AMPLIFIER / FILTER MODULE FOR EPMS SYSTEMS VERSION 1.1 npi 2010 npi electronic GmbH, Hauptstrasse 96, D-71732 Tamm, Germany Phone +49 (0)7141-9730230; Fax: +49 (0)7141-9730240 support@npielectronic.com; http://www.npielectronic.com...
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Page 2: Table Of Contents
2.1. Components of the EPMS-07 Housing ............... 4 2.2. General System Description / Operation..............4 2.3. System Grounding ....................... 5 2.4. Technical Data......................5 3. DPA-2FL Differential Amplifier / Filter Module ............6 3.1. DPA-2FL Components ....................6 3.2. System Description...................... 6 3.3. Signal Flow Diagram....................6 3.4. -
Page 3: Safety Regulations
General safety regulations for operating electrical devices should be followed. AC MAINS CONNECTION: While working with the npi systems, always adhere to the appropriate safety measures for handling electronic devices. Before using any device please read manuals and instructions carefully. -
Page 4: Epms-07 Modular Plug-In System
2.2. General System Description / Operation The npi – EPMS-07 is a modular system for processing of bioelectrical signals in electrophysiology (see Figure 1). The system is housed in a 19” rackmount cabinet (3U) containing a power supply and has room for up to 7 plug-in units. The plug-in units are connected to power by a bus at the rear panel. -
Page 5: System Grounding
DPA-2FL User Manual ___________________________________________________________________________ 2.3. System Grounding The 19" cabinet is grounded by the power cable through the ground pin of the mains connector (= protective earth). In order to avoid ground loops the internal ground is isolated from the protective earth. The internal ground is used on the BNC connectors or GROUND plugs of the modules that are inserted into the EPMS-07 housing. -
Page 6: Dpa-2Fl Differential Amplifier / Filter Module
The DPA-2FL differential amplifier/filter is a plug-in unit for the npi EPMS-07 modular system. The DPA-2FL is designed to amplify and filter very small bio-electrical signals. The input voltage range is ±12 V, the inputs are protected up to 15 V. All inputs and the output are BNC connectors. -
Page 7: Description Of The Front Panel And Operation
3.4. Description of the Front Panel and Operation Figure 2: DPA-2FL front panel view In the following description of the front panel elements each element has a number that is related to that in Figure 2. The number is followed by the name (in uppercase letters) written on the front panel and the type of the element (in lowercase letters). - Page 8 DPA-2FL User Manual ___________________________________________________________________________ OFFSET unit The OFFSET unit consists of (1) OFFSET RANGE switch, (2) OFFSET potentiometer and (3) ZERO ADJ. trim-pot. (1) OFFSET RANGE switch Toggle switch for selecting the OFFSET range, x0.1 or x1. (2) OFFSET potentiometer Potentiometer for compensating a DC OFFSET.
- Page 9 DPA-2FL User Manual ___________________________________________________________________________ (6) NOTCH filter switch (option) Switch for enabling (ON) or disabling (OFF) the optional NOTCH filter. (7) OUT connector BNC connector providing the conditioned signal. (8, 9) – IN, + IN connector BNC connectors for connecting the input signal. The inputs can be used in single ended or differential configuration.
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Page 10: Literature
DPA-2FL User Manual ___________________________________________________________________________ 4. Literature Barmashenko, G., Eysel, U. T., & Mittmann, T. (2003). Changes in intracellular calcium transients and LTP in the surround of visual cortex lesions in rats. Brain Res. 990, 120- 128. Boulton, A. A., Baker, G. B. & Vanderwolf, C. H. (eds.) (1990). Neurophysiological Techniques, Basic Methods and Concepts. -
Page 11: Technical Data
DPA-2FL User Manual ___________________________________________________________________________ 5. Technical Data DPA-2FL Input range: ±12 V; protected up to 15 V Input impedance: 1 M, related to ground Input capacitance: 30 pF Noise: <5 µV rms @ full bandwidth (8 kHz) and gain 10k OFFSET compensation: set by potentiometer, range x0.1 or x1, set by toggle switch...
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