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- SEAGATE TECHNOLOGY, INC.
- Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
- ┌──────────────────────────────────┬─────────────────────────────────┐
- │ United States +1 408 438-8771 │ United Kingdom +44 628 478011 │
- ├──────────────────────────────────┼─────────────────────────────────┤
- │ Germany +49 89 140-9331 │ Singapore +65 227-2217 │
- └──────────────────────────────────┴─────────────────────────────────┘
- (C)opyright 1991
-
-
-
- ST-1480A AT Interface
-
- J5 Drive ID Select and │ │ J6 (located on side
- Configuration Select Header│ │ near rear)
- ──────────────────────┬────┘ └──────────┬─────────
- │ o o1
- 40-pin I/O Cable Connector │ +5v ---o o
- ╒═══════════════════1╕ o o o o o1 ══════
- J4│::::::::::∙:::::::: │ /─────────\ o o o o o │ │
- ═╧══════════╤════════2╧═│ 0 0 0 0 │═E═D═C═B═A═ Remote LED│┘ └│Reserved
- (pin 20 missing for └─5─G─G─12┘ (see below) Connection│ │Jumper
- keying purposes) DC Power │Position
-
-
- J5
- JUMPER | FUNCTION:
- A REFSIG: This location provides a port for external connection
- of the synchronized spindle reference signal (pin-1) and ground
- (pin-2). It is also available on J4 pin-28 if the factory jumper is
- installed. The drive will self-determine if it is a master of slave
- for spindle synchronization.
-
- B HOST SLV/ACT: When this shunt is installed, -SLAVE PRESENT is
- applied to J4 pin-39 for systems that require this signal from the
- Slave drive. If jumper "B" is installed, then jumper "E" must not be
- installed.
-
- C MASTER: When this shunt is installed, the drive is configured
- as the Master. When not installed, the drive is a Slave.
-
- D SLAVE PRESENT: When installed, this shunt indicates to the
- Master drive that a Slave is present. This shunt must be installed on
- the Master drive in a two-drive system.
-
- E ACTIVE: When this shunt is installed, DASP- is made present on
- J4 pin-39. If "E" is installed, then "B" must not be installed.
-
-
- ST - 1480A
-
- UNFORMATTED CAPACITY (MB) ________________492
- FORMATTED CAPACITY (xx SECTORS) (MB) _____426
- AVERAGE SECTORS PER TRACK ________________62 (rounded down)
- ACTUATOR TYPE ____________________________VOICE COIL
- TRACKS ___________________________________13,302
- CYLINDERS ________________________________1474
- HEADS ____________________________________9
- DISCS ____________________________________5
- MEDIA TYPE _______________________________THIN FILM
- RECORDING METHOD _________________________ARLL 1,7 (ZBR)
- INTERNAL TRANSFER RATE (mbits/sec) _______17 to 25
- SPINDLE SPEED (RPM) ______________________4,412
- INTERFACE ________________________________AT
- TPI (TRACKS PER INCH) ____________________1760
- BPI (BITS PER INCH) ______________________
- AVERAGE ACCESS (ms) ______________________14
- SINGLE TRACK SEEK (ms) ___________________2.5
- MTBF (power-on hours) ____________________150,000
- POWER REQUIREMENTS: +12V START-UP (amps) _2.5
- +12V TYPICAL (amps) __0.7
- +5V TYPICAL (amps) ___0.7
- TYPICAL (watts) ______8
- MAXIMUM (watts) ______15
- BUFFERED STEP PULSE RATE (micro sec) _____
- WRITE PRECOMP (cyl) ______________________N/A
- REDUCED WRITE CURRENT (cyl) ______________N/A
- LANDING ZONE (cyl)________________________AUTO PARK
- IBM AT DRIVE TYPE ________________________*
-
- Possible translation: 895 cyl, 15 heads, 62 sectors = 426,163,200
-
- * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO
- SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
- AVAILABLE. (see below)
-
- PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
- ZBR = Zone Bit Recording = Variable sectors per track
-
- !WARNING! - Already low-level formatted at the factory.
-
- Since a User-definable or Custom translation geometry may
- be used, it is imperative that the values be written down
- and kept with your permanent records for retrieval in the
- event of CMOS battery failure.
-
- Seagate reserves the right to change, without notice, product
- offerings or specifications. (4/12/91)