
Q M   5 2 5 5 0     A T   B I G F O O T    QUANTUM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/SLIMLINE        Cylinders        | 4969|     |
Capacity form/unform  2577/      MB        Heads           4|   16|     |
Seek time   / track  15.5/ 3.5 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB ADAP./SEGMEN Landing Zone
Data transfer rate    6.000 MB/S int       Bytes/Sector      512
                     16.600 MB/S ext PIO4
Recording method     PRML 16/17                     operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C           55    |    -40 75
Power: sleep          1.0 W     Humidity     %         5 85    |      5 95
       standby        1.0 W     Altitude    km    -0.198  3.048| -0.198 12.192
       idle           4.0 W     Shock        g        10       |     70
       seek           6.5 W     Rotation   RPM      3600
       read/write     5.0 W     Acoustic   dBA        34
       spin-up            W     ECC        Bit   160BIT REED SOLO.,ON THE FLY
                                MTBF         h     300000
                                Warranty Month        36
Lift/Lock/Park     YES          Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
QUANTUM  QM51275/52550AT BIGFOOT  INSTALLATION GUIDE 6/96


  ---------------------------------------------+
                                   JP1+-+-+-+  |XX
                                      +-+-+-+  |XX
                                      SP DS CS |XX
                                               |XX















**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
QUANTUM  QM 51275AT/52550AT BIGFOOT  JUMPER SETTING

 Jumper Setting
 ==============

 The QM51275AT/QM52550AT has three drive mode jumper options:
 DS (Drive Select), SP (Slave Present) and CS (Cable Select).


 Drive Select/Cable Select/Slave Present
 ---------------------------------------
 +---+---+---+-----------------------------------------------------+
 |CS |DS |SP |                   Description                       |
 +---+---+---+-----------------------------------------------------+
 | 0 | 0 | 0 |Drive configured as a slave.                         |
 |   |   |   |Compatible with drives using the PDIAG- line to      |
 |   |   |   |handle Master/slave communications.                  |
 +---+---+---+-----------------------------------------------------+
 | 0 | 0 | 1 |Slave Drive                                          |
 |   |   |   |Uses the SP jumper to determine whether a Slave is   |
 |   |   |   |present, without checking PDIAG- or DASP-.           |
 +---+---+---+-----------------------------------------------------+
 | 0 | 1 | 0 |Master Drive                                         |
 |   |   |   |Uses DASP- to check for the presense of a Slave.     |
 +---+---+---+-----------------------------------------------------+
 | 0 | 1 | 1 |Master Drive                                         |
 |   |   |   |Uses the SP jumper to determine whether a Slave is   |
 |   |   |   |present, without checking PDIAG- or DASP-.           |
 +---+---+---+-----------------------------------------------------+
 | 1 | X | X |Slave or Master Drive, depending on the state of the |
 |   |   |   |Cable Select signal (pin 28) at the IDE-bus interface|
 |   |   |   |connector.                                           |
 |   |   |   |                                                     |
 |   |   |   |If the signal state is set to 0 (grounded), then the |
 |   |   |   |drive is configured as if DS were 1, described above.|
 |   |   |   |If the Cable Select signal is set to 1 (high), then  |
 |   |   |   |the drive is configured as if DS were 0, described   |
 |   |   |   |above.                                               |
 +---+---+---+-----------------------------------------------------+

 NOTE
 In the table below, a 0 indicates that the jumper is removed, a 1
 indicates that the jumper is installed, and an X indicates that the
 jumper setting does not matter.


 Master Drive
 ------------
 The Master of a two drive configuration or as the only drive
 (if the slave drive uses DASP).
 DS CLOSED
 SP OPEN
 CS OPEN


 Drive Select
 ------------
 The DS jumper is used to identify the drive as a Master drive in a
 single or dual drive configuration.


 Master in a two drive system
 ----------------------------
 If the Slave drive does not use DASP
 DS CLOSED
 SP CLOSED (Slave present)
 CS OPEN


 Slave Drive
 -----------
 A Slave drive in a two drive configuration:
 DS OPEN
 SP OPEN
 CD OPEN

 Slave Present
 -------------
 The SP jumper is only used when the second drive in a two drive
 configuration does not support DASP. DASP (Drive active/drive 1
 present) is a CAM (Common Access Method) defined signal that
 indicates the presence of a second drive, DASP is used during power
 on initialization and after a reset. Prior to this definition,
 products were introduced which did not utilize this method to detect
 the presence of a second drive. The SP jumper is only used on the
 Master drive, with the DS jumper, when the second drive does not
 support DASP.


 Cable Select
 ------------
 The CS (Cable Select) jumper is only used in systems that support
 this feature. Cable Select allows for each IDE disk drive to be
 jumped the same and the position on the cable determines the ID.
 This requires special cable and both drives on the interface would
 have to support this feature.


