IBM 4690 manual Tape Drive Specications, Physical Specications, Power Requirements

Chapter 4. Tape Drive Speci®cations

TR-4 1/4-inch tape cartridge technology offers fast, efficient, high capacity storage in a compact, easy-to-remove hard-shell package. This mass-storage technology evolved from the original reel-to-reel 1/2-inch tape storage medium. Storage capacities increased from 60 MB on 9 tracks (QIC-24, 1982) to the 4 GB capacity achievable with the tape cartridge.

This section includes the following speci®cations and requirements:

vPhysical speci®cations

vPower requirements

vDrive performance

vEnvironmental requirements

vTape cartridge speci®cations and capacities

vRegulatory compliance

Physical Speci®cations

The physical speci®cations1 are of both the EIDE and SCSI tape drives are listed in the following tables.

Physical Speci®cations

Type Drive	Internal Drive	External Drive
Height	25 mm (1.0 in.)	51 mm (2.0 in.)
Width	102 mm (4.0 in.)	155 mm (6.1 in.)
Length	163 mm (6.4 in.)	234 mm (9.2 in.)
Weight	0.5 kg (1.0 lb.)	1.4 kg (3.0 lb.)

Power Requirements

The following table lists the power speci®cations by voltage level for the tape drive. The power speci®cations are measured at the tape-drive power connector and are nominal values.

Power Speci®cations

Voltage	+12 V dc	+5 V dc
Voltage tolerance	+ or −10%	+ or −5%
Operational current	2.0 amps	1.0 amps
Standby current	0.2 amps	0.6 amps
Peak	2.2 amps max	Ð
Power Sequence	None	None
Ripple (peak to peak)	Ü100 mV	Ü100 mV
Power user (nominal)	< 15 watts (excluding surge)	< 15 watts (excluding surge)

1.Product-description data represents IBM's design objectives and is provided for comparative purposes; actual results might vary, based on a variety of factors. This product data does not constitute a warranty. Data is subject to change without notice.

© Copyright IBM Corp. 1998 19