Multi-Channel Digital Recorder

DT-200 (2 Ch) Programmable DAT Recorder

  • Record and playback two channels of scientific analog data on one Digital Audio Tape for up to four hours.
  • Switchable four low pass filters of Bessel, Butterworth, and Chebyshev types for each channel.
  • Switchable four gains of x1, x10, x50, x100 for each channel.
  • ID mark input / output channel and mark edit function.
  • Extra digital voice record and playback channel.
  • Very reliable and low noise signal channel characteristic

The DT-200 employs advanced DAT (Digital Audio Tape) technology and sophisticated instrumentation functions. Without question, the DT-200 DIGITAL TAPE RECORDER will greatly improve the stability, bandwidth, noise level and edit functions when compared to VCR PCM’s and FM tape recorders.

The DT-200 DIGITAL TAPE RECORDER is designed for scientific analog data recording and playback. It is a modified digital tape recorder with modern instrumentation control circuits. The DT-200 can record two channels of analog data from DC to 24kHz in 16-bit linear resolution digital format up to two hours, or DC to 14.5kHz in 12-bit nonlinear digital format up to four hours.

Two well calibrated switchable gain channels with selectable filters provide true scientific instrument feature. The very low noise channel characteristic provides reliable data recording.

Each channel has two push button switches to select four different gains and four different filters. During recording, different gains can be selected to maximize signal/noise ratio. Different filters can also be selected to response different signal waveform and different applications. During playback, different filter functions are selected to get no ringing pulses, sharp cut passband width signal, or between the above two features.

There is an additional digital voice channel for extra voice recording. An independent A/D and D/A conversion and an innovative digital circuitry are used for this voice channel. The voice channel, which is completely independent of two analog data channels, gives users another useful feature.

The DAT Sub-Code information is another feature superior to PCM video tape. Subcode information such as Start IDs, Skip IDs, program numbers, and absolute time data, can be used to search the location of data quickly and displays time during playback. There are Start ID input and output BNC connectors for manual mark input/output. An automatic Start ID writing mode can be chosen to mark every input signal automatically.

Specifications:

Sample frequency 48 KHz, 44.1 KHz, 32KHz
Number of channels Programmable 2 channels.
Frequency response Standard: DC-24 kHz. Long-play mode: DC-14.5 kHz
Quantization Standard: 16-bit linear. Long-play mode: 12-bit nonlinear
Signal to noise ratio More than 90 dB
Total noise level Less than 1mV RMS
Dynamic range Standard: More than 90 dB & Long-play mode: more than 90 dB
Distortion Less than 0.01%(1 kHz)
Channel separation Greater than 85 dB
Filters Selectable Bessel, Butterworth and Chebyshev 6-pole low-pass and digital filters for each channel.
Gain Programmable x1, x10, x50, x100 (or customer specified) for each channel recording.
Tape Digital Audio Tape (DAT).
Recording head Rotary header
Recording time Standard: 120 minutes. Long play Mode: 240 minutes with 120-minute tape.
Analog input / output Two BNC connectors for +/-10V signal input range, 100k Ohm input impedance. Two BNC connectors for +/-10V signal output range, 200 Ohm output impedance.
Digital copy in / out Phono jack, 0.5Vp-p input level, 75 Ohm impedance and optical jack for input. Optical jack: wavelength 660 nm for output.
Start ID mark input/output BNC connectors, positive TTL input/output.
Voice channe Independent 8-bit quantization , 50-3kHz frequency response.
Remote control Infrared remote control system
Power consumption 120 V, 60 Hz, or 220 V, 50 Hz, 45 W