OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR
Contents
1. M 5 3 DI OINX Ditferentiator Integrator Module e Erie 6 Dod DBEOINA COMM POMC ratu natu nae nen Etapa pie 6 3025 DIAOINX System DescriDIOfl la 6 3 4 Description of the Front Panel and 7 AVA 9 ENC CHIC EBENE TT 9 a2 Functional Data seeds ieu 10 version 1 3 page 2 DI 01INX User Manual 1 Safety Regulations VERY IMPORTANT Instruments and components supplied by npi electronic are NOT intended for clinical use or medical purposes e g for diagnosis or treatment of humans or for any other life supporting system npi electronic disclaims any warranties for such purpose Equipment supplied by npi electronic must be operated only by selected trained and adequately instructed personnel For details please consult the GENERAL TERMS OF DELIVERY AND CONDITIONS OF BUSINESS of npi electronic D 71732 Tamm Germany 1 2 3 4 5 GENERAL This system is designed for use in scientific laboratories and must be operated by trained staff only 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 read2. D Electronic Instruments for the Life Sciences nga e ade OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR THE DI OINX INTEGRATOR AND DIFFERENTIATOR MODULE FOR EPMS SYSTEMS DI OINX DIFFERENTIATOR INTEGRATOR vert SENE OFFSET openanon OFFSET D s e Gt 9 FILTER 10 Hz RESET CONSTANT ui i LUPUT OFF VERSION 1 3 npi 2014 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 DI 01INX User Manual Table of Contents Sale IR OU ALLONS NE 3 2 EPNDS 07 Modular PI s In Sy SECUIT se aco vu Seta c iun 4 2 1 General System Description a a 4 2 2 lal ONS DIE ae welt ico uae greed Gc calla OU 4 2 9 EPMSSE 07 EIOUSIBE UO bu a adici tu oda acit 4 24 PAR O ious n uio M Om RA LIPPE 4 2 55 SY STE ITE COUN md de 5 uL MILII ML PN mee nr 5 TEMS E O a A A E 5 2 05 echnical Dataa E a eee nae 5 M 5 laus rM
3. manuals and instructions carefully The device is to be operated only at 115 230 Volt 60 50 Hz AC Please check for appropriate line voltage before connecting any system to mains Always use a three wire line cord and a mains power plug with a protection contact connected to ground protective earth Before opening the cabinet unplug the instrument Unplug the instrument when replacing the fuse or changing line voltage Replace fuse only with an appropriate specified type STATIC ELECTRICITY Electronic equipment is sensitive to static discharges Some devices such as sensor inputs are equipped with very sensitive FET amplifiers which can be damaged by electrostatic charge and must therefore be handled with care Electrostatic discharge can be avoided by touching a grounded metal surface when changing or adjusting sensors Always turn power off when adding or removing modules connecting or disconnecting sensors headstages or other components from the instrument or 19 cabinet TEMPERATURE DRIFT WARM UP TIME All analog electronic systems are sensitive to temperature changes Therefore all electronic instruments containing analog circuits should be used only in a warmed up condition 1 e after internal temperature has reached steady state values In most cases a warm up period of 20 30 minutes is sufficient HANDLING Please protect the device from moisture heat radiation and corrosive chemicals version 1 3 page 3 DI 01INX U
4. which apply to both the Differentiator and the Integrator The selected time constant can be fine tuned between 1 and 100 with a potentiometer In differentiator mode a variable damp factor can be activated in order to avoid instability DC offsets can be eliminated using the corresponding trim pots Additionally a reset switch and a reset input TTL are implemented for resetting the DI 01NX if necessary ory n WU s Figure 4 Examples of input and output traces in Differentiator and Integrator mode Differentiator input signals output signals Integrator input signals version 1 3 page 6 3 4 0 DI O1NX User Manual Description of the Front Panel and Operation C DI 01NX DIFFERENTIATOR INTEGRATOR OFFSET MODE OF OFFSET OPERATION K FACTOR 10 ms DIFFERENTIATOR 1 ms TIME CONSTANT Figure 5 DI 0I NX front panel view version 1 3 page 7 DI OINX User Manual In the following description of the front panel elements each element has a number that is related to that in Figure 5 The number is followed by the name in uppercase letters written on the front panel and the type of the element in lowercase letters Then a short description of the element is given 1 MODE OF OPERATION switch Switch for setting the operation mode of the differentiator or 2 integrator 2 INTEGRATOR OFFSET trim pot INTEGRATOR OFFSET Trim p
5. FERENTIATOR potentiometer 160 90 230 lt rj EF 300 125 4 500 1104 lt 1 000 100 10 000 K FACTOR Potentiometer for damping the differential function in the case of instability see also chapter 4 Not functional in Integration mode 11 DIFFERENTIATOR OFFSET trim pot DIFFERENTIATOR OFFSET 4 Technical Data 4 1 Electrical Data Input impedance Output impedance Reset INPUT INPUT voltage range Output voltage range FILTER 10 Hz OFFSET Time constants Damp coefficient diff mode version 1 3 Trim pot for correction of DC OFFSETS in differentiator mode 1 MO 50 10 kQ TTL active high 5V 10 V integrator mode d dt Uin max 10 V us differentiator mode 10V low pass Bessel 2 pole 12 dB octave corner frequency trim pots range 1 V Range 1 ms 10 ms 100 ms 1 s set by rotary switch 1 100 of range set by potentiometer K 100 10000 page 9 DI 01INX User Manual 4 2 Functional Data Differentiator mode PAS 10000 dt Frequency response ue with GK 100 10000 1 pT K With as the time constant set at the front panel i e the longer the time constant 15 set the larger the output signal gets Damping High K values mean low damping lim F p pT Low K values mean high damping lim F p 0 Integrator mode 0 1 Frequency re
6. able of driving up to 3 EPMS E housings Each housing is connected by a 6 pole cable from the one of the three connectors on the front panel of the PWR 03D to the rear panel of the respective EPMS E housing see Figure 1 Figure 3 A POWER LED indicates that the PWR 03D is powered on see Figure 1 Power switch voltage selector and fuse are located at the rear panel see Figure 2 Note Although the chassis of the PWR 03D is connected to protective earth it doesn t provide protective earth to the EPMS E housing version 1 3 page 4 DI OINX User Manual PWR D3D DAAN Figure 1 PWR 03D front panel view Figure 2 PWR 03D rear panel view Note This power supply is intended to be used with npi EPMS E systems only 2 5 System Grounding EPMS 07 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 The internal ground and mains ground protective earth can be connected by a wire using the ground plugs on the rear panel of the instrument It is not possible to predict whether measurements will be less or more noisy with the internal ground and mains ground connected We recommend that you try both arrangements to determine the be
7. ot for correction of DC OFFSETs in integrator mode Time constant unit The time constant unit consist of 3 Time constant potentiometer and 4 Time constant switch 3 TIME CONSTANT potentiometer Potentiometer for selecting the time constant in of the range set by switch 4 4 TIME CONSTANT switch Switch for selecting a time constant range for the input signal on Note The time constant has to be selected according to the input signal Otherwise the output signal might go into saturation If this should happen re adjust the time constant and reset the DI 01NX module using the RESET unit 6 9 5 OUTPUT connector BNC connector providing the processed signal OUTPUT RESET unit The RESET unit consists of 6 TTL connector and 9 RESET push button 6 TTL connector If required the DI O1NX can be reset by a TTL signal connected to this input 9 RESET push button If required the DI O1NX can be reset manually pressing this button RESET is to be activated when the output is in saturation see 2 It can also be used to set a defined starting point in integration mode version 1 3 page 8 7 INPUT connector INPUT 8 FILTER switch FILTER IO Hz OFF DI OINX User Manual BNC connector for the input of the signal to be processed Switch for filtering very slow signals in differentiator mode The corner frequency of the two pole Bessel filter is 10 Hz 10 K FACTOR DIF
8. ser Manual 2 EPMS 07 Modular Plug In System 2 1 General System Description Operation The npi EPMS 07 is a modular system for processing of bioelectrical signals in electrophysiology The system is housed in a 19 rackmount cabinet 3U has room for up to 7 plug in units The plug in units are connected to power by a bus at the rear panel The plug in units must be kept in position by four screws M 2 5 x 10 The screws are important not only for mechanical stability but also for proper electrical connection to the system housing Free area must be protected with covers 2 2 EPMS 07 Housing The following items are shipped with the EPMS 07 housing V 5 07 cabinet with built in power supply Mains cord V Fuse2A 1 A slow Front covers In order to avoid induction of electromagnetic noise the power supply unit the power switch and the fuse are located at the rear of the housing 2 3 5 07 Housing The following items are shipped with the EPMS E 07 housing EPMS E 07 cabinet External Power supply PWR 03D Power cord PWR 03D to EPMS E 07 Mains chord Fuse 1 6 A 0 8 A slow Front covers LI 5 The EPMS E 07 housing 1s designed for low noise operation especially for extracellular and multi channel amplifiers with plugged in filters It operates with an external power supply to minimize distortions of the signals caused by the power supply 2 4 PWR 03D The external power supply PWR 03D is cap
9. sponse pT With T as the time constant set at the front panel 1 e the longer the time constant is set the smaller the output signal gets Damping Damping does not apply in Integrator mode version 1 3 page 10
10. st configuration T 5 07 d The 19 cabinet is connected to the CHASSIS connector at the rear panel It can be connected to the SYSTEM GROUND GND on the rear panel of the instrument see Figure 3 Without this connection the EPMS chassis and the chassis of all modules plugged in is free floating Note The EPMS E 07 chassis is not connected to protective earth Rp v Important Always adhere to the appropriate safety measures Figure 3 Rear panel connectors of the EPMS E 07 2 6 Technical Data 19 rackmount cabinet for up to 7 plug in units Dimensions 133 4 mm 3U high 1U 1 3 4 44 45 mm 302 mm deep EPMS 07 Power supply 115 230 Volts AC 60 50 Hz fuse 2 1 A slow 45 60 W EPMS E 07 External power supply for EPMS E 115 230 Volts AC 60 50 Hz fuse 1 6 0 8 A slow Dimensions of External power supply W x D x H 225 mm x 210 mm x 85 mm version 1 3 page 5 DI 01INX User Manual 3 DI 01NX Differentiator Integrator Module 3 1 01 Components The following items are shipped with the DI 0I NX system X Differentiator Integrator module for the EPMS 07 system V User manual 3 2 DIH 01NX System Description The DI OINX unit was designed for differentiating or integrating time dependent signals low pass two pole Bessel filter is implemented in order to allow distortion free differentiation of very slow signals Four time constants are available
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