User manual MAXTOR ST318452FC VOLUME 1

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah X15 36LP FC Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336752FC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST318452FC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah X15 36LP FC Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336752FC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST318452FC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . © 2001 Seagate Technology LLC. All rights reserved October 2001 Publication number: 100139874, Rev. [. . . ] This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor command. See paragraph 6. 2. 1, "Conducted noise immunity. " Specified voltage tolerance includes ripple, noise, and transient response. Operating condition is defined as random 8 block reads at 290 I/Os per second. Current and power specified at nominal voltages. Decreasing +5 volt supply by 5% increases 5 volt current by 3. 2%. Decreasing +12 volt supply by 5% increases 12 volt current by 2. 1%. During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track. [3] [4] [5] [6] [7] General DC power requirement notes. Minimum current loading for each supply voltage is not less than 1. 7% of the maximum operating current shown. The +5V and +12V supplies should employ separate ground returns. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device. Parameters, other than spindle start, are measured after a 10-minute warm up. No terminator power. 22 6. 2. 1 Conducted noise immunity Cheetah X15 36LP FC Product Manual, Rev. B Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. +5V 0 to 100 kHz 100 kHz to 10 MHz 150mV 100mV +12V 150mV 100mV 6. 2. 2 Power sequencing The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down. 6. 2. 3 Current profiles The +12V and +5V current profiles for the ST336752FC and ST318452FC models are shown below in figures 3, 4, 5, and 6. T0 T1 T2 T3 Power is applied to the drive. Spindle begins to accelerate under current limiting after performing internal diagnostics. Spindle is up to speed and the Head-Arm restraint is unlocked. Note: All times and currents are typical. See Table 2 for maximum current requirements. +12 Volt Current during spindle start -- Typical Amperes AC Envelope 2. 5 DC average of waveform 2. 0 A 1. 5 1. 0 0. 5 0. 0 T0 T1 T2 T3 0. 0 2 4 6 8 Seconds 10 12 14 16 Figure 3. Typical ST336752FC drive +12V current profile Cheetah X15 36LP FC Product Manual, Rev. B 23 +5 Volt Current during spindle start -- Typical Amperes Nominal (average) DC curve 1. 0 A 0. 5 AC Envelope 0. 0 T0 T1 T2 T3 0. 0 4 8 12 16 Seconds 20 24 28 32 Figure 4. Typical ST336752FC drive +5V current profile +12 Volt Current during spindle start -- Typical Amperes AC Envelope 2. 5 DC average of waveform 2. 0 A 1. 5 1. 0 0. 5 0. 0 T0 T1 T2 T3 0. 0 2 4 6 8 Seconds 10 12 14 16 Figure 5. Typical ST318452FC drive +12V current profile 24 Cheetah X15 36LP FC Product Manual, Rev. B +5 Volt Current during spindle start -- Typical Amperes Nominal (average) DC curve 1. 0 A 0. 5 AC Envelope 0. 0 T0 T1 T2 T3 0. 0 4 8 12 16 Seconds 20 24 28 32 Figure 6. Typical ST318452FC drive +5V current profile Cheetah X15 36LP FC Product Manual, Rev. [. . . ] B Customer Service (CSO) Warranty Service Seagate offers worldwide customer support for Seagate drives. Seagate direct OEM, Distribution and System Integrator customers should contact their Seagate service center representative for warranty information. Other customers should contact their place of purchase. Authorized Service Centers If you live outside the US, you can contact an Authorized Service Center for service. USA/Canada/Latin America Support Services Presales Support Call Center Disc: Tape: Toll-free 1-877-271-3285 1-800-626-6637 Direct dial +405-936-1210 +1-714-641-2500 FAX +1-405-936-1683 +1-714-641-2410 Technical Support (SeaFONE) 1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; Tape and Server Appliance: +1-405-936-1683 SeaFAX SeaTDD 1-800-SEAGATE +1-405-936-1687 Toll-free 1-800-468-3472 -- 1-800-636-6349 1-800-624-9857 Direct dial +1-405-936-1456 +1-405-936-1456 +1-905-660-4936 +1-905-812-8099 FAX / Internet +1-405-936-1462 +1-405-936-1464 +1-905-660-4951 www. memofix. com +1-905-812-7807 www. adtech1. com +55-21-507-6672 e-mail: sgt_cso@gbl. com. br Warranty Service Call Center USA Mexico and Latin America Canada Memofix1 Adtech* Brazil MA Centro de Serviços* -- +55-21-509-7267 European Support Services For European customer support, dial the toll-free number for your specific country for presales support, technical support and warranty service. If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 A. M. [. . . ]