Differential Amplifier with Active Headstage (DP-311)

Differential Amplifier with Active Headstage (DP-311)

The DP-311 AC/DC Differential Amplifier is highly suited for EEG, EKG and extracellular recording using glass or metal microelectrodes.

  • Excellent common mode rejection: 120 dB at 60 Hz
  • Small active headstage which can be mounted in micromanipulators
  • Suitable for use with high impedance glass or metal microelectrodes

Item# Description U.S. List Price Quantity
64-1422 DP-311 Differential Amplifier
64-1423 3110 Replacement Headstage for DP-311 Differential Amplifier
64-1323 PJ2-5 2 mm Jack, Uninsulated, pkg. of 5
460-7013 (BNC-6) BNC to BNC cable, 6 feet (Pomona)
460-7032 (BNC-2) BNC to BNC cable, 2 feet (Pomona)
64-0455 (PV-830) Power Line Conditioner
1000 VA, 120 VAC 60HZ
64-0456 (PV-830CE) Power Line Conditioner 1000 VA, 220 VAC 50/60HZ
64-1011 E Series Straight Body Electrode Holder; Wire with 2 mm Pin, 1.0 mm Glass ID
64-1012 E Series Straight Body Electrode Holder; Wire with 2 mm Pin, 1.2 mm Glass ID
64-1013 E Series Straight Body Electrode Holder; Wire with 2 mm Pin, 1.5 mm Glass ID
64-1014 E Series Straight Body Electrode Holder; Wire with 2 mm Pin, 2.0 mm Glass ID
64-1015 E Series Straight Body Electrode Holder; Wire with 2 mm Pin and Port, 1.0 mm Glass ID
64-1016 E Series Straight Body Electrode Holder; Wire with 2 mm Pin and Port, 1.2 mm Glass ID
64-1017 E Series Straight Body Electrode Holder; Wire with 2 mm Pin and Port, 1.5 mm Glass ID
64-1018 E Series Straight Body Electrode Holder; Wire with 2 mm Pin and Port, 2.0 mm Glass ID
64-0999 E Series Straight Body Electrode Holder; Wire with 2 mm Jack, 1.0 mm Glass ID
64-1000 E Series Straight Body Electrode Holder; Wire with 2 mm Jack, 1.2 mm Glass ID
64-1001 E Series Straight Body Electrode Holder; Wire with 2 mm Jack, 1.5 mm Glass ID
64-1002 E Series Straight Body Electrode Holder; Wire with 2 mm Jack, 2.0 mm Glass ID
64-1003 E Series Straight Body Electrode Holder; Wire with 2 mm Jack and Port, 1.0 mm Glass ID
64-1004 E Series Straight Body Electrode Holder; Wire with 2 mm Jack and Port, 1.2 mm Glass ID
64-1005 E Series Straight Body Electrode Holder; Wire with 2 mm Jack and Port, 1.5 mm Glass ID
64-1006 E Series Straight Body Electrode Holder; Wire with 2 mm Jack and Port, 2.0 mm Glass ID
64-1007 E Series Straight Body Electrode Holder; Wire w/ 2 mm Jack and Vent (for use with Warner Oocyte Clamp OC-725), 1.0 mm Glass ID
64-1008 E Series Straight Body Electrode Holder; Wire w/ 2 mm Jack and Vent (for use with Warner Oocyte Clamp OC-725), 1.2 mm Glass ID
64-1009 E Series Straight Body Electrode Holder; Wire w/ 2 mm Jack and Vent (for use with Warner Oocyte Clamp OC-725), 1.5 mm Glass ID
99-0146 (ESW-F17V) E Series Electrode Holder, straight style, fits 1.7 mm capillary, Ag wire
64-1010 E Series Straight Body Electrode Holder; Wire w/ 2 mm Jack and Vent (for use with Warner Oocyte Clamp OC-725), 2.0 mm Glass ID
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The DP-311 AC/DC Differential Amplifier is highly suited for EEG, EKG and extracellular recording using glass or metal microelectrodes. Features include high input impedance, high common mode rejection [120 dB @ 60 Hz], low noise, high gain, high DC tolerance, bandwidth filtering and an active headstage.

High Input Z, High CMR

High common mode rejection is very important in minimizing electrical interference. The high input resistance of the DP-311 Series (1012 typical) ensures that the instrument's high CMR will not be degraded by differences in source impedance at the input. This is important in extracellular recording, where the difference in resistance of the recording and indifferent electrode is often large.

High DC Tolerance

Extracellular action potentials are typically measured in microvolts but are usually accompanied by much larger DC electrode voltages. The DP-311 is designed to amplify these microvolt level events with as much as ±2 Volts DC at the input.

High Gain, Low Noise & Bandwidth Limiting DP-311 Headstage for DP-311

With gain selections at x10, x100, x1000 and x10,000, even microvolt signals are sufficiently amplified for computer and recorder inputs. Noise is very low, typically 8 µV p-p at 1 Hz to 10 kHz bandwidth. Reducing the bandwidth with the low pass and high pass filters further lowers noise.

Calibration Signal

An internal Cal signal provides a convenient check of amplifier gain and operation.

(DP-311 Headstage included)

Specifications
Voltage Gain, AC & DC x10, x100, x1,000 & x10,000
Input Resistance 1012 Ω typical
Leakage Current 1.0 pA typical
Common Mode Rejection 120 dB min
(1,000,000 :1) at 60 Hz
Noise, Input Shorted 8 µV p-p,
1 Hz to 10 kHz typical
Low Frequency Filter Settings (high pass) DC, 0.1, 1.0, 10 & 300 Hz
High Frequency Filter Settings (low pass) 0.1, 0.3, 1.0, 3.0, 10 & 50 kHz
Offset Control Range ±600 mV min at output,
any gain set
Calibration Signal 1 mV p-p at 100 Hz
Max. Common Mode Signal ±2 V
Output Voltage Swing ±10 V (±5 Volts in gain of 10)
Output Resistance 50 Ω
Input Connectors 2 mm male pins,
0.5" (12.7 mm) spacing
Output Connector BNC
Power Requirements 90 to 270 VAC, 50/60 Hz, 10 VA
Physical Size, H x W x D 5.1 x 21.25 x 18 cm
Shipping Weight 2.3 kg
Warranty Two years, parts and labor
  1. Loss of Astrocytic Domain Organization in the Epileptic Brain
    Loss of Astrocytic Domain Organization in the Epileptic Brain
    J Neurosci. 2008 Mar 26;28(13):3264-76
DOCUMENT DESCRIPTION
DP311 user manual_2016_May_17.pdfDP-311 User's Manual