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- Micropolis 1350 Series Disk Drives
- SPECIFICATIONS
-
- Model Number
- Unformatted Capacity: 1353 1353A 1354 1354A 1355
-
- Total Mbytes 85.3 106.6 127.9 149.3 170.6
- Disk Platters 3 3 4 4 5
- Read/Write Heads 4 5 6 7 8
- Cylinders ------------------ 1024 -----------------
- Bytes per track ---------------- 20,832 -----------------
-
- Formatted Capacity
-
- Total Mbytes 75.4 94.2 113.1 131.9 150.8
- Bytes per Sector ------------------- 512 -----------------
- Sectors per Track -------------------- 36 -----------------
-
- PC Drive Types
-
- If you are using third-party installation software or an on-board
- BIOS on the controller, follow the instructions included with the
- software or controller. Otherwise, examine the entries in your
- drive table and find the type that most resembles the head and
- cylinder parameters of the drive without exceeding these
- parameters.
-
- Performance Specifications
-
- Seek Time (including settling time) Track-to-Track 5 msec
- Average 23 msec
- Maximum 50 msec
- Average Rotational Latency 8.33 msec
- Rotational Speed 3600 rpm +/- 0.5%
- Data Transfer Rate 10 Mbits/sec
- MTBF 150,000 hours
- Positioner Fully balanced rotary voice coil
- Parking Automatic park and lock
-
- General Functional Specifications
-
- Interface ESDI
- Sectoring (see W1 description below) Hard or Soft
- Write Precompensation Start Cylinder 1024*
- Reduced Write Current Start Cylinder 1024*
- Landing Zone 1024
- Mounting Plane Any orientation
-
- * These are effectively turned off by specifying a non-existent
- cylinder. Some systems accomplish this by using a value of "-1"
-
- Power Requirements
-
- +12V +/-5% 2.0A avg
- (4.25A max during start-up)
- +5V +/-5% 2.0A avg
- Power dissipation, typical 32 Watts
-
- Drive Addressing and Interface Termination
- NOT
- J1 J2 USED
- ___ __________________ ____________ ___ ___
- | | |1| | |1| | | | | |
- | |_| |___| |_| |_| |
- | D D D |
- | TERMINATOR A A A W W W W W |
- | 3 2 1 5 4 3 2 1 |
- | |
- | |
- | (COMPONENT SIDE) |
-
- RN1 Interface Terminator
- The Interface Terminator factory installed at RN1 provides proper
- termination for the interface lines. When daisy-chaining multiple
- drives, leave the terminator installed only in the last physical
- drive on the daisy chain cable; remove the terminator from each
- of the other drives. In most PC/AT installations, the C: drive
- is actually at the end of the cable and should retain the
- terminator.
-
- DA1, DA2, DA3 Drive Select Jumpers
- The Drive Address jumpers are identified as DA1, DA2, and DA3.
- Address selection is binary, as shown in the table below. The
- ESDI controller's documentation will specify the drive address
- to use.
-
- Drive Select Jumpers
- Address DA3 DA2 DA1
- ------- --- --- ---
- 1 out out in
- 2 out in out
- 3 out in in
- 4 in out out
- 5 in out in
- 6 in in out
- 7 in in in
-
- "Drive Address 0" (no jumper at DA1, DA2 or DA3) is a "deselect"
- (i.e., no drive selected). For many multiple drive installations,
- each drive must have a unique address. An exception is that for
- every drive in a PC/AT installation, verify that the only Drive
- Address jumper is at DA2; move the jumper if necessary (the
- special twisted interface cable that is generally used takes care
- of assigning a unique address to each drive). PC/AT controllers
- can typically support a maximum of two drives.
-
- W5 Select the Spindle Control Option
- W5 selects the spindle control option. If W5 is installed, the
- drive waits for a Start Spindle command (after power is applied)
- to start the spindle motor. If W5 is not installed (the factory
- default configuration), the drive automatically starts the
- spindle motor at power-on. W5 is not installed for PC/AT
- installations.
-
- W1 Selects the Sectoring Mode.
- If W1 is installed, the drive operates in the soft-sectored mode.
- If W1 is not installed (the factory default configuration), the
- drive operates in the hard-sector mode. W1 is not installed for
- most PC/AT applications.
-
- W2, W3, W4 Sector Size Option
- The number of bytes per sector may be specified using the Set
- Bytes Per Sector command or by selecting a default sector
- configuration with jumpers W2, W3, and W4 as follows:
-
- Jumpers Sectors Bytes/Sector
- W4 W3 W2 Per Track Formatted Unformatted
- --- --- --- --------- --------- -----------
- out out out 35 512 595
- -------------------------------------------------------------
- | * out out in 36 512 578 |
- -------------------------------------------------------------
- out in out 19 1024 1096
- out in in 9 2048 2314
- in out out 5 4096 4166
- in out in 32 512 651
- in in out 64 256 325
- in in in 1 20,832 20,832
-
- * This is the default (factory installed) configuration and is
- recommended for PC/AT applications
-