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Summary of Contents for NPI EXT-16DX
- Page 1 OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR THE EXT-16DX EXTRACELLULAR AMPLIFIER VERSION 1.3 npi 2013 npi electronic GmbH, Bauhofring 16, 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
EXT-16DX User Manual _______________________________________________________________________________________________________________ Table of Contents 1. Safety Regulations......................3 2. EXT-16DX ........................4 2.1. System Description...................... 4 2.2. Signal Flow Diagram....................4 2.3. Description of the Front Panel..................5 2.4. Description of the Rear Panel..................7 2.5. Headstages ........................9 Headstage Assembly Elements.................. -
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: Ext-16Dx
They are also linked to a SubD connector for connecting the optional R/I-T1DX for electrode resistance measurement and current injection. The EXT-16DX can be operated manually by the controls at the front panel or remotely by a digital I/O board (option) An external power supply (PWR-03DX) guarantees low noise operation. -
Page 5: Description Of The Front Panel
2.3. Description of the Front Panel Figure 2: EXT-16DX 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 6 EXT-16DX User Manual _______________________________________________________________________________________________________________ (5) GAIN display Display showing the value of the selected amplification of the recorded signal. Possible factors: 10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k. (6) LOWPASS display Display showing the value of the selected corner frequency for the lowpass filter. Possible...
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Page 7: Description Of The Rear Panel
(5) AUX connector (optional) Customized auxiliary connector. (6) POWER SUPPLY connector Connector for npi power supply PWR-03DX. Note: This power supply is must be used with one npi EXT-16DX system only. (7) CHASSIS connector Connector for grounding the cabinet. (8) GROUND connector Connector providing system ground. - Page 8 EXT-16DX User Manual _______________________________________________________________________________________________________________ MONITORING UNIT The monitoring unit shows the selected channel, gain or corner frequency as a DC voltage. (9) CHANNEL monitor connector BNC connector providing the monitor signal for the selected channel for reference (range: -8V…+7V) , e.g. channel 0 is monitored by –8 V or channel 9 is monitored by +1V.
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Page 9: Headstages
EXT-16DX (blue connector) Important: The cables must be connected so that the white labels fit! The recording headstage is attached to the EXT-16DX amplifier (HEADSTAGE CON 1 connector, blue). The stimulation headstage is connected to the R/I-T1DX (HEADSTAGE CON 2 connector, green). - Page 10 EXT-16DX User Manual _______________________________________________________________________________________________________________ Figure 6: headstage assembly with NeuroNexus electrode Figure 7: side view of the headstage assembly with cables connected Important: The cables must be connected so that the white labels fit! Figure 8 shows a schematic of the top view of the headstage assembly with the connector for the test array or the NeuroNexus electrode, respectively.
- Page 11 EXT-16DX User Manual _______________________________________________________________________________________________________________ The NeuroNexus electrode has only 8 pairs of connectors for 16 recording/stimulation sites and is plugged into the headstage as shown in Figure 9. The 9 pair next to the cable connector (GND) is left open since the electrode has no sites for grounding.
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Page 12: Literature
EXT-16DX User Manual _______________________________________________________________________________________________________________ 3. Literature o 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. o Boulton, A. A., Baker, G. B. & Vanderwolf, C. H. (eds.) (1990). Neurophysiological Techniques, Basic Methods and Concepts. -
Page 13: Technical Data
EXT-16DX User Manual _______________________________________________________________________________________________________________ 4. Technical Data , range ±2 V Input: >10 CMR >70 dB at 1 kHz (tested with 0 input resistance) Differential Input: Input Capacitance: 10 pF CHANNEL Monitor: -8V…+7V; +13V in single ended mode HIGHPASS Filter: single pole, attenuation: -6 dB / octave, corner frequencies (Hz): DC, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100, 300, 500, 800, 1k, 3k;...
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