Ampex DCRSI-75 Brochure

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The DCRsi 75 recorder is a one-inch, transverse scan, rotary digital recorder capable of recording data at any user data rate from 0 to 75 Mbits/sec.

Our continuing field experience with hundreds of applications for DCRsi recorders has resulted in the incorporation of additional product enhancements which further increase the power and flexibility of the DCRsi 75 system.

The DCRsi 75 recorder is fully format and interface compatible with all models in the DCRsi product family.

DCRsi 75

Digital Cartridge Recording System

Variable Data Rate

The DCRsi 75 recorder is equipped with a fully integrated internal memory buffer which provides total isolation between the user interface and the instantaneous timing demands of the tape transport. Via this front-end buffer, the DCRsi recorder will unconditionally follow the user’s data clock — any data rate from zero up to 75 Mbits/sec can be recorded or played back either continuously, in bursts, or while fluctuating at any slew rate. Instant-on record capability provides for event capture without time lag associated with tape speed lock-up. No operator adjustments are required as the data rate changes.The DCRsi recorder is the only high data rate, high capacity recorder which completely emulates a solid state FIFO memory. The system is a slave to user interface equipment, thus simplifying the task facing the data and control interface designer.

The Transport

The DCRsi 75 recorder utilizes a field-proven transverse-scanning tape transport design, featuring mechanical simplicity, compact size and a short, co-planar tape path — which all adds up to a rugged and reliable unit. The front loading/unloading of the tape cartridge is done instantly, simply and reliably because there are no elevators or other complex mechanisms used to transport the cartridge.The compact transverse scanner assembly contains six azimuth record/reproduce heads. The scanner assembly is self contained and is easily replaceable in the field with a typical head life exceeding 3,000 head-to-tape hours

Hardware Configurations

The DCRsi 75 recorder is available in single module record only or record/reproduce configurations with built-in error correction encoding system and power supplies.

Data Addressing

Data, as recorded on the DCRsi cartridge, is organized into discrete blocks, each assigned a unique address number and time stamp as it arrives at the recorder interface.

Low Life Cycle Costs

Extremely low life cycle costs result from the extremely low head wear (over 3,000 hours of head-to-tape contact), hands-off operation and tremendous tape cost savings when compared to longitudinal HDDR recorders.

The Cartridge

The rugged 50 GByte-capacity DCRsi tape cartridge is made of fiber reinforced polycarbonate.The 2.5 pound cartridge is flame retardant, UV resistant, non-toxic, with high impact strength. Tape durability is conservatively rated at more than 200 passes.

Applications

The DCRsi recorder family is the most versatile high speed data collection and replay equipment available. DCRsi recorders can be found wherever high performance recording is required, even in less than ideal environments, including the following applications - ASW, flight testing, remote sensing and test range instrumentation. The DCRsi 75 recorder sets the new high performance standard for interface versatility, ease of use, maintainability, size, weight, power and performance.

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Data Rate

8-Bit Parallel Interface 0 to 9.4 MBytes/sec Without restriction Auxillary Interface 0 - 155 K Bits/sec (@ the data rate of the parallel interface)

I/O Buffer 18 MByte (user accessible) Cartridge Type 1" cartridge (Ampex 5000, 5001 or 5003)

Size 10.5"W x 6.5"D x 1.65"H Weight 2.5 lbs. Capacity 50 GBytes

Addressable Block Size 4356 bytes High Speed Data Interface Byte-wide, ECL differential Control & Status Interface RS 232 or RS 422 Error Rate Better than 1 in 109using Ampex 5001 tape Error Correction System Type Reed-Solomon (85, 81) interleaved to a depth of 3,618 Tape Transport

Type Rotary transverse Tape speed 3.7 ips (average) Shuttle speed 88 ips

Internal Time Code

Resolution ± 1 msec. Accuracy ± 10 PPM

Size

Single module record only and record/reproduce configurations 13.5"W x 23"D x 7"H

Optional AC input power modules

115 VAC, 3 phase, 400 Hz 13"W x 6"D x 3"H 115 VAC, 1 phase, 50-400 Hz 13"W x 6"D x 3"H

Weight

Record only <60 lbs. (without tape cartridge) Record/reproduce <65 lbs. (without tape cartridge) Optional AC input power modules

115 VAC, 3 phase, 400 Hz 10 lbs. maximum 115 VAC, 1 phase, 50-400 Hz 10 lbs. maximum

Power

Record/Reproduce module 450 watts typical (28 VDC input w/heaters off)

Temperature

Non-operating -54° to 70° without tape Operating Per Mil-E-5400R, Class 1, Figure 3, Curve A, except lower limit -30° and upper

limit 45°C

Cooling

Convection and radiation cooling with heaters for operation below 0°C Built in cooling fans

Vibration

Non-operating Per Mil-Std-810C, Method 514-2, Category b.1, Procedure 1, Fig. 514.2-2 Curve H Operating Sinusoidal; Mil-Std-810C, Curve H modified below 110 Hz, random; 13.5 grms

Shock

Non-operating (both modules) Per Mil-Std-810C, Method 516.2-2, procedure 1

Humidity

Non-operaitng 10% to 90% non-condensing Operating 20% to 80% non-condensing

Altitude

Non-operating to 70,000 feet Operating to 40,000 feet

DCRsi™75 Specifications - ruggedized, single module configuration

Specifications subject to change without notice or obligation.

500 Broadway, Redwood City, California 94063-3199 Telephone: 1-800-752-7590 Fax: 650-367-3850 Web: http://www.ampexdata.com Email: sales@ampexdata.com