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The DCRsi 120 recorder is a one-inch, transverse scan, rotary digital
recorder capable of recording data at any user data rate from 0 to 120
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 120 recorder.
The DCRsi 120 recorder is fully format and interface compatible with
all models in the DCRsi product family.
DCRsi 120
Digital Cartridge Recording System
Variable Data Rate
The DCRsi 120 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 120 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 120 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 120 recorder is available in a two-module ruggedized configuration and a single-unit rack mount configuration.
Furthermore the two module configuration is available with a pressurized or non-pressurized tape transport module.
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 120 recorder sets the new high performance standard for interface versatility, ease of use, maintainability, size,
weight, power and performance.
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60.5
Data Rate
8-Bit Parallel Interface 0 to 15 MBytes/sec Without restriction
20 Mbytes/sec Maximum burst rate
Auxillary Interface 0 - 248 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 5.9 ips (average)
Shuttle speed 88 ips
Internal Time Code
Resolution ± 1 msec.
Accuracy ± 10 PPM
Size
Tape transport module 14.7"W x 10.8"D x 6.9"H
Rec/Rep electronics module 15.3"W x 12.5"D x 7.7"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
Tape transport module 32.5 lbs. (without tape cartridge)
Rec/Rep electronics module 31 lbs.
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 <375 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
Tape transport module Convection and radiation cooling with heaters for operation below 0°C
Rec/Rep electronics module Built in cooling fans
Vibration
Non-operating (both modules) Per Mil-Std-810C, Method 514-2, Category b.1, Procedure 1, Fig. 514.2-2 Curve H
Operating (transport) Sinusoidal; Mil-Std-810C, Curve H modified below 110 Hz, random; 13.5 grms
Operating (electronics) Sinusoidal, Mil-Std-180C, 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 50,000 feet w/pressurized tape transport module
to 40,000 feet w/ non-pressurized tape transport module
DCRsi™120 Specifications - ruggedized, two module version
Specifications subject to change
without notice or obligation.
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1
60.5
Data Rate
8-Bit Parallel Interface 0 to 15 MBytes/sec Without restriction
20 Mbytes/sec Maximum burst rate
Auxillary Interface 0 - 248 K Bits/sec (@ the byte-wide data rate of the high speed data 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 5.9 ips (average)
Shuttle speed 88 ips
Internal Time Code
Resolution ± 1 msec.
Accuracy ± 10 PPM
Size 19.0"W x 17.0"D x 12.25"H (3.25" front protrusion for cartridge and cover)
Weight <80 lbs. (without tape cartridge)
Power <375 watts typical
90-240 VAC 50/60 Hz, singlephase
Mounting Standard 19" rack, 24" deep
Slide mounting kit (optional)
Temperature
Non-operating -20°C to 55°C without tape
Operating 0°C to 40°C
Cooling Built in cooling fans
Vibration
Non-operating Per Mil-Std-810C, Method 514-2, Category (g), Procedure X, Fig. 514.2-7
Curve AW, 1.5G, 5 to 200 Hz
Shock
Non-operating Per Mil-Std-810C, Method 516.2, Procedure V
Humidity
Non-operaitng 20% to 90% non-condensing
Operating 20% to 80% non-condensing
Altitude
Operating to 15,000 feet
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
Litho in U.S.A. 05/01 DCRsi-120/PC
DCRsi is a registered trademark of Ampex Corporation
©1996-2001 Ampex Corporation
Ampex Data Systems is a subsidiary of Ampex Corporation
Specifications subject to change without notice or obligation
DCRsi™120 Specifications - rack mount version
™
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