IBM 4690 - Manual (Page 33)

Chapter 4. Tape Drive Specifications
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 specifications and requirements:
v Physical specifications
v Power requirements
v Drive performance
v Environmental requirements
v Tape cartridge specifications and capacities
v Regulatory compliance
Physical Specifications
The physical specifications 1 are of both the EIDE and SCSI tape drives are listed in
the following tables.
Physical Specifications
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 specifications by voltage level for the tape
drive. The power specifications are measured at the tape-drive power connector
and are nominal values.
Power Specifications
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 —
Power Sequence None None
Ripple (peak to peak) ⇐100 mV ⇐100 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