Warner Instruments DP-304A User Manual
DP-304A, Rev. 091615
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Warner Instruments
1125 Dixwell Avenue, Hamden, CT 06514
(800) 599-4203 / (203) 776-0664
(203) 776-1278 - fax
DP-304A, Rev. 091615
Table of Contents
INTRODUCTION .......................................................................................................................... 3
NOMENCLA TURE ........................................................................................................................ 4
Text conventions ....................................................................................................................... 4
CONTROL DESCRIPTION ........................................................................................................... 5
Front panel ................................................................................................................................ 5
Offset Control ........................................................................................................................ 5
High-pass filter ...................................................................................................................... 5
Low-pass Bessel filter ........................................................................................................... 5
Gain Control .......................................................................................................................... 5
Power .................................................................................................................................... 6
Rear Panel ................................................................................................................................ 6
SETUP AND TEST ........................................................................................................................ 7
Setup ......................................................................................................................................... 7
Test ........................................................................................................................................... 7
OPERA TION ................................................................................................................................. 7
AC mode ................................................................................................................................... 7
DC mode ................................................................................................................................... 8
Input Connections ..................................................................................................................... 8
Output Connection .................................................................................................................... 8
APPENDIX .................................................................................................................................... 9
Specifications ............................................................................................................................ 9
Warranty ................................................................................................................................... 9
Service ...................................................................................................................................... 9
Certifications ........................................................................................................................... 10
DP-304A, Rev. 091615
The DP-304A is designed for amplifying signals such as EEG, EKG and extracellular action
potentials. With gain selections of x10, x100, x1000 and x10,000, μV level signals are
sufficiently amplified for computer signal analysis. The input impedance is typically 10
12
Ω and
the input leakage is typically 1 pA.
The unit features high pass and low pass filters, plus a DC operation mode. An input-offset
control nulls potentials present at the input, which can be seen at the output in DC mode.
Each channel features a test mode that applies 1 mV pulses to the input to check operation of
the entire system.
The DP-304A is powered by AC line power and contains no batteries. The line voltage
selector switch on rear panel is used to set the proper line voltage, 110 or 220 VAC at 50 or 60
Hz.
Principal features of the DP-304A include:
9 Low noise
9 Gains to x10,000
9 Bandwidth to 50KHz
9 Excellent common mode rejection
9 Internal 2-pole low-pass Bessel filter
9 Internal 2-pole high-pass filter
9 Compact design
THIS EQUIPMENT IS NOT DESIGNED NOR INTENDED
FOR USE ON HUMAN SUBJECTS
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