D-2/8 - Mobile mini DAT recorder
Smallest 8 channel DAT recorder of world for record and playback form analog signals up to 16 kHz per channel in 2 channel mode.

• Record and reproduce of 8 analog data channels, voice, date, time and digital signals.
• Extremely small and ruggedized design and therefore multiple application areas
• Usable in each position and therefore especially suitable for extreme mobile applications
• Very resistant against shock and vibrations
• Extremely adaptable to various measuring requests due to switchable number of channels and signal bandwidth
• Robust remote control box with bargraph display
• Computer interface for on- and off-line Data analysis (OPT.)
• Telemetry connection for computer interface for on-line data analysis during mobile use (OPTION)
• Event-driven record commands
• Record commands by Remote Control
• Automatic test number recording
• Fast search run in both directions
• Power supply DC 10 ... 32 V, battery (OPTION), mains 220 V AC (OPTION)

A telemetry output, connected to our RF telemetry TS/TE 2.5, transmits the data to a computer. Concurrently, high redundancy recording of raw data takes place within the DAT. With the aid of our REMUS Software all or single channels can be selected and/or presented. The computer freed from the ''Data Logging" task can now be utilized for analysis and presentation.

The ''Record Commands" can be controlled remotely. The "Record Procedure" is started and terminated with the +5 V and 0 V levels respectively.

Sometimes, especially during long term measurements, continuous recording would be impractical. In this case the ''Event-Driven" record control is a powerful tool. Supporting this feature is one "Event Channel". Once an ."Event Channel" is activated, a ''Record Procedure'' of approximately 1 minute is started. This procedure includes the recording of the active event, time and test number.

The D-2/8 DAT can convert data from analog to digital and feed them into computer directly without recording. For this operation the "Tape Bypass" function is used. Just as in recording mode the analog data are filtered and digitized. The data are transferred directly to the computer instead to tape. This is independent upon the tape runs and records data or stays without recording. In this mode the DAT recorder is used as PCM encoder for telemetry transmission.

Another feature is the pulse input DIG In/Out. With that feature any pulses with any sampling relationship from 0 to 20 kHz can be recorded and reproduced. This input is very suitable for PCM signals transmitted via RF telemetry. Data from PCM encoders, input pulses from sensors for revolution or speed, or the recording of simple events are just a few. Optionally an event multiplexer for 16 events is available.

These are some examples of the flexible use of our Data Recorder D-2/8. For more information contact our sales office.

References: (D-2/16, D-2/8 and D-2/4)

Aprilia motorcycle Italy

Benetton Formula 1 England

CNES France
MIR Space Sation

Daewoo Corp. Korea

Ferrari Formula 1 Italy

Fiat Italy

Renault Sport France

SAGEM France

Samsung Heavy Industry
Korea

Hyundai Korea

Military test departments

Railway Germany

VW Brazil

and many more .... .

Applikation pictures

Missile
(D-2/16)

Missile
(D-2/4)

MIR
Space Station
(D-2/8 Spec.)

CNES France

Technical data:

• 8 analog channels; input and output are connected via BNC connectors
• Measuring range +/-5 V with overload indication for each channel
• Resolution 12 Bit, simultaneous sampling of all channels
• Input impedance 100 KOhm, SNR 72 dB
• Over voltage protection +40 V
• Total sampling rate 96 kHz, distributed to selected number of channels ( see table )
• 8-pole lowpass Butterworth filter for input and output, avoiding Aliasing effects and smoothing the output signals; damping in locking area 48 dB/Octave
• Analog output impedance 2 Ohme, max. 10 mA, +/-5V
• Programmable for 2 - 4 - 8  channel mode
• Signal bandwidth max. in 2 channel mode 0 ... 16 kHz (-3dB)
• Serial Interface, suitable for direct transmission even over long cables or for RF- or IR-transmission
• PC Interface plug-in board for all IBM comp. PCs (Option)
• Digital pulse input (TTL), that means pulses from 0 ... 20 kHz can be recorded and reproduced.
• Date and time recording (year- month - day - hour - minute - second)
• Tape length counter for absolute time, programming time, remaining record time.
• Automatic or manual setting of test number
• Fast search run in both directions searching the test number
• Remote control unit with bargraph display, Voice channel and overload indication (option)
• Voice channel with external microphone and built-in loudspeaker, signal bandwidth 60 ... 2800 Hz.
• Recording time 3 hours with a DT180 cassette
• Storing capacity approximate, 2.4 Giga Byte with a DT180 cassette Reproducible accuracy between record and replay at 0 Hz +0,1 %
• Phase error between channels at same frequency <1°.
• Error correction system Double Encoded Reed Solomon Code.
• Bit error rate better 10-10
• Recording format Helical Scan R-DAT
• Illuminated display with following indications: date/time - program i.e. test number - tape length counter for absolute time - program time - remaining record time - indications for functions like record -forward - reverse - tape loaded etc.
• Additional indications like battery level - error condensing water
• Functional buttons on tape deck: FORWARD - REVERSE - PLAY - RECORD -STOP - PAUSE - HOLD
• Remote controllable with TTL-level for START/REC - STOP or/and event controllable with 1 event for blocs of 1 min
• Power supply DC 10 ... 32 V, battery (Option) or mains 220 V +/-10 % AC (Option) 110V AC (Option)
• Power requirement approximate 10 Watt
• Environmental conditions:
  Operating temperature range -5 C° to + 45 °C
  Storage temperature range -20 °C to + 60 °C
  Relative humidity 20 ... 80 % non condensing
  Vibration 5g Mil. Standard 810 C, Curve C
  Shock 10g in all directions
  Size 160 x 90 x 90 mm without shock absorber
  Weight 1.5 kg without shock absorber

Table:

Analogue bandwidth
kHz -3 dB

Scanning rate
kHz

Channel Mux

2
Ch.

4
Ch.

8
Ch.

2
Ch.

4
Ch.

8
Ch.

max. 3 hours

16
kHz

8
kHz

4
kHz

48
kHz

24
kHz

12
kHz