The DP-304A is a four channel AC/DC differential amplifier highly suited for EEG, EKG and extracellular recording.
High common mode rejection is very important in minimizing electrical interference. The high input resistance of the DP-304A (1012 ohm 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.
Extracellular action potentials are typically measured in microvolts but are usually accompanied by much larger DC electrode voltages. The DP-304A is designed to amplify these microvolt level events with as much as ± 2 VDC at the input.
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.
The internal Cal signal provides a convenient check of amplifier gain and operation.
The DP-304A is shipped with rack mount hardware and is line powered.
The DP-304A includes IC-2S input cables (2 per channel) which are not terminated at the outboard end.
The DP-304AIC includes IC-4M input cables (2 per channel) having a 2 mm pin and alligator clip at the outboard end.
The amplifier is fully compatible with the HEKA data acquisition system.
|Voltage Gain, AC/DC||x10, x100, x1,000, x10,000|
|Input Resistance||1012Ω 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|
|Low Frequency Filter Settings (high pass)||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 setting|
|Calibration Signal||1 mV p-p at 10 Hz|
|Max. Common Mode Signal||±2 V|
|Output Voltage Swing||±10 V, ±5 V at x10 gain|
|Output Resistance||50 Ω|
|Input and Output Connectors||BNC|
|Power Requirements||92 - 250 VAC, 50/60 Hz, 20 VA|
|Physical Size||9.0 x 42.5 x 19.0 cm
(H x W x D)
|Shipping Weight||4.55 kg|
|Warranty||One year on electrical components|
|Order No.||Model No.||Product Description||USA Price||Order|
|64-2360||DP-304A||Differential Amplifier, four channel, with IC-2S cables||Login||Login|
|64-2361||DP-304AIC||Differential Amplifier, four channel, with IC-4M cables||Login||Login|
|64-2325||IX-408||8 Channel data recorder with Labscribe software||Login||Login|
|64-2431||IX-416||16 channel data recorder with Labscribe software||Login||Login|
|460-7032||BNC-2||BNC to BNC cable, 2 feet (Pomona)||Login||Login|
|460-7013||BNC-6||BNC to BNC cable, 6 feet (Pomona)||Login||Login|
|64-0046||IC-2S||Replacement standard input cable set, 2 pack||Login||Login|
|64-0047||IC-4M||Replacement input cable set with 2 mm pin and alligator clip on outboard end, BNC on inboard end, 2 pack||Login||Login|