9-Track Tape Drive: HP 88781A by Comco.

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HP 88781A 9-Track Tape Drive

48VDC Vertical 9-Track for Telcos

HP 88781A Streaming 9-Track Tape Drive

The HP 88781A is a vertically mounted, 1/2-inch reel-to-reel tape drive. Designed for performance and simplicity, the 88781A features the latest in storage technologies:

Extended Warranty for Tape Drives

Our Extended Service eliminates hourly repair bills and puts you at the front of the line for tape drive repair. We repair many brands and formats of tape drives:

HP 88780/7980- based 9-track tape drives, including Tandem 5170, Tandem 5175, IBM 9348, Sun, Scitex, Sequent, AT&T, NCR;

18-track, 36-track, 128-track, 256-track and 384-track SCSI by Xcerta, Fujitsu, Tandem, IBM, Sequent, Qualstar, Overland Data, JVC, MP Tapes, VDS. (Formats: 3480, 3490, 3490e, 3590, 3590e, 3590h.)

Don't wait till trouble finds you. Call 800-432-8638/563-355-1212 today.

Compact, ergonomic design
Simplified control panel
Versatile handling of all standard-sized reels (6 to 10 1/2 inches)
125 ips nominal tape speed for maximum streaming performance
Supports both 1600 cpi Phase Encoded (PE) and 6250 cpi Group-Coded Recording (GCR)
1-Mbyte cache buffer for fast transfers during start-stop applications
Easy-to-use diagnostics
Custom operating features, selected by the operator from the control panel
Low power consumption

Designed for Shallow Racks

Designed for use in telephone companies, the HP 88781A accommodates the "shallow-rack" requirements unique to this industry.

The HP 88781A is fitted with a 48VDC power supply for use in telephone switching centers. The 88781A complies with applicable Bellcore standards to make this the ultimate in reliable data collection equipment.

Available variations of the 88781: 88781a, 88781aa.

Specifications

Formatted Data Capacity: (2400 ft. tape)	200-700 Mbytes (typ. 6250 cpi) 140 Mbytes (typ. 6250 cpi) 40 Mbytes (typ. 1600 cpi)
Tape Speed
Transfer Rate To/From Tape (max):	769 Kbytes/s (6250 GCR); 208 Kbytes/s (1600 PE)
Read/Write:	123 ips (GCR) 130 ips (PE)
Rewind:	320 ips avg., 450 ips max. 90 sec. to rewind 2400 ft.
Density
Standard:	6250 cpi GCR 1600 cpi PE
Maximum Physical Block Size On Tape*
6250 GCR:	256 Kbytes
1600 PE:	64 Kbytes
*block size may be limited by host operating system.
Power Requirements
DC Input Voltage:	48-60V DC
Power Consumption:	250 W max. 20 W standby 170 W idle
Physical
Height:	609 mm. (24 in.)
Width:	Front panel: 482.6 mm. (19 in.)
Depth:	Overall: 313.35 mm. (12.34 in.); Within Rack: 225.35 mm. (8.87 in.) Rotation Distance: 304.8 mm. (12 in.)
Weight:	37 kg. (81 lbs.)
Reliability
Hard Error Rate:
GCR	Read: 1 in 10^11 at 90% statistical confidence Write: 1 in 10^10
PE	Read: 1 in 10^10 at 90% statistical confidence Write: 1 in 10E9
Functional Characteristics
Internal Buffer Size:	512 Kbytes
Operating Mode:	Streaming
Interfaces:	SCSI (single-ended & differential); Pertec-compatible
Environmental Conditions
Operating Temperature:	15° to 32° C, non-condensing (range limited by media)
Rate Of Change:	20° C/hr.
Relative Humidity:	Operating: 20 to 80% at <25° C max. wet bulb temp. Storage or shipment: 90% at 40° C
Altitude:	Operating: 3000 m. (10,000 ft) Non-operating: 15,300 m. (50,000 ft)
Vibration
Operating, Random:	5-500 Hz. approx. 0.25 G RMS
Non-operating, Random:	5-500 Hz. approx. 2 G RMS
Non-operating, Swept Sine:	5-500-5 Hz., 0.5 G RMS (0-peak)
Audible Noise
Read/write Operations: (A-weighted sound power)	6.6 Bels A
Tape-loading Operation: (A-weighted sound power)	7.2 Bels A
* Faliure rates are derived from a large data base of test samples. The actual faliure rate will vary from unit to unit. Not responsible for typographical errors. ** GCRXC is a Hewlett Packard data compression protocol implemented almost exclusively in non-PC HP computer systems.