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DPA-2FL User Manual 

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version 1.1 

 

 

page 3 

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)  GENERAL: This system is designed for use in scientific laboratories and must be 

operated only by trained staff. General safety regulations for operating electrical devices 
should be followed. 

 
2)  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. 
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. 

 
3)  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.

 

 
4)  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 (i.e. after internal temperature has 
reached steady-state values). In most cases a warm-up period of 20-30 minutes is 
sufficient. 

 
5)  HANDLING: Please protect the device from moisture, heat, radiation and corrosive 

chemicals. 

 

Содержание DPA-2FL

Страница 1: ...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 ...

Страница 2: ...ntents 1 Safety Regulations 3 2 EPMS 07 Modular Plug In System 4 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 Description of the Front Panel and Operation 7 4 Literature 10 5 Technical Data...

Страница 3: ... 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 specifie...

Страница 4: ...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 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 In ord...

Страница 5: ...nal 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 th...

Страница 6: ...ical signals The input voltage range is 12 V the inputs are protected up to 15 V All inputs and the output are BNC connectors The input impedance is 1 M Using the differential input configuration common mode signals and noise are removed allowing recordings of signals with very small amplitudes An optional NOTCH filter removes 50 Hz 60 Hz noise DC offsets can be compensated either by the using the...

Страница 7: ...ge 7 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 Then a short description of the element is given ...

Страница 8: ... Compensation procedure Set the input switches to OFF to ground the inputs and set the HIGH PASS FILTER to 100 Hz Set the GAIN range switch to 10 and adjust the baseline to zero using the ZERO ADJ trim pot Switch the GAIN factor switch to all positions and readjust to zero if necessary Note The overall OFFSET compensation is the product of the reading of both controls range switch and potentiomete...

Страница 9: ...n In differential configuration the signal which is connected to IN is subtracted from the signal that is connected to IN Note If only one input is used single ended configuration the other should be grounded to avoid coupling of noise see also 10 and 11 10 11 input switches ON OFF toggle switches for grounding the BNC connectors 8 and 9 In OFF position the inputs are grounded 12 HIGH PASS FILTER ...

Страница 10: ...ater maze performance exploratory activity inhibitory avoidance and hippocampal plasticity in aged superior and inferior learners Eur J Neurosci 16 2175 2185 Kettenmann H Grantyn R eds 1992 Practical Electrophysiological Methods Wiley Liss New York Lalley P M A K Moschovakis and U Windhorst 1999 Electrical Activity of Individual Neurons In Situ Extra and Intracellular Recording in U Windhorst and ...

Страница 11: ... set by potentiometer range x0 1 or x1 set by toggle switch HIGH PASS FILTER single pole attenuation 6 dB octave corner frequencies Hz DC 0 1 1 100 300 600 LOW PASS FILTER single pole attenuation 6 dB octave corner frequencies Hz 50 100 1k 3k 5k 8 NOTCH FILTER 50 Hz or 60 Hz GAIN rotary switch 10 100 1k 2 5k 5k 10k Output range 12 V into 1 k 1 V into 50 Size front panel 12 HP 60 6 mm x 3U 128 5 mm...

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