2018 TDT Product Catalog
Tucker-Davis Technologies (TDT) provides products for basic and applied research in the neurophysiology, hearing, and speech sciences as well as for general data acquisition applications. We offer a complete line of modular DSP-based data acquisition and stimulus generation systems.
Tucker-Davis Technologies (TDT) provides products for basic and applied research in the neurophysiology, hearing, and speech sciences as well as for general data acquisition applications. We offer a complete line of modular DSP-based data acquisition and stimulus generation systems.
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Low Impedance Headstages<br />
<strong>TDT</strong>’s low impedance headstages are designed for evoked potentials,<br />
EMG, and EEG recordings using needle electrodes, surface electrodes<br />
and electrode caps. Headstages connect directly to the Medusa<br />
preamplifiers via a standard 25-pin connector.<br />
Medusa PreAmps<br />
PreAmps feature <strong>TDT</strong>’s unique preamplifier design in a smaller, lower-count package.<br />
Signals are digitized at up to ~25 kHz on the preamplifier and sent over a fiber optic link to<br />
a DSP device such as the RZ2 or RZ6-A-P1 (pg 32) base station, where they are filtered and<br />
processed in real-time. A standard DB25 input connects the preamp directly to any of <strong>TDT</strong>’s<br />
headstage designs (pgs 42-45).<br />
Preamplifiers are available with either PCM or Sigma-Delta A/Ds. Typical applications use<br />
PCM A/Ds to acquire bioelectric signals with minimal delay. Choose Sigma-Delta A/Ds<br />
to record near high frequency electric or magnetic noise sources (e.g. eye-coils, wireless<br />
motion detectors, or touch screens).<br />
Part Numbers:<br />
RA4PA 4 Channels<br />
RA16PA 16 Channels<br />
Technical Specifications:<br />
S/N (typical):<br />
3 μVrms bandwidth 300 - 3000 Hz<br />
6 μVrms bandwidth 30 -7500 Hz<br />
A/D sampling rate: ~ 6, 12, or 25 kHz<br />
Input impedance:<br />
10 5 Ohms<br />
Frequency response: 3 dB 2.2 Hz - 7.5 kHz<br />
Battery:<br />
four hours to charge<br />
Battery life between charges: 20 - 30 hrs<br />
RA4PA and RA16PA:<br />
A/D:<br />
Maximum voltage in:<br />
Lowpass filter:<br />
4 or 16 channels, 16-bit PCM<br />
+/- 4 mV<br />
7.5 kHz (3 dB corner, 1st order,<br />
6 dB per octave)<br />
Four-Channel Headstage<br />
The four-channel low impedance headstage provides standard 1.5 mm touch-proof<br />
safety connectors for easy direct connection to electrodes. A built-in impedance<br />
tester can be used to test each channel and the reference with respect to ground.<br />
Part Number:<br />
RA4LI<br />
52
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