NEC MFM D3142 42MB Код
Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 642| | |
Capacity form/unform 44/ MB Heads 8| | |
Seek time / track 25.0/ ms Sector/track 17| | |
Controller MFM / ST506 Precompensation 128
Cache/Buffer KB Landing Zone 664
Data transfer rate 0.625 MB/S int Bytes/Sector 512
0.625 MB/S ext
Recording method MFM operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C |
Power: sleep W Humidity % |
standby W Altitude km |
idle W Shock g |
seek W Rotation RPM
read/write W Acoustic dBA
spin-up W ECC Bit
MTBF h 30000
Warranty Month
Lift/Lock/Park NO Certificates
**********************************************************************
L A Y O U T
**********************************************************************
NEC MFM DISKS
+---------------------------------------------------------+
| |XX
| |XXJ2
| |XX
| |XX
| Terminator +-------+ |x J4
| Resistor | SW1 | |
| ON/OFF Switch-------+ |XX
| |XX
| |XXJ1
| |XX
| Drive Address-------+ |XX
| Switch | SW2 | |XX
| +-------+ |XX
| |XX
| |
| |XXPower
| |XXJ3
+---------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
NEC MFM DISKS
Jumper Settings
===============
D512X, D5146 etc.
-----------------
+-----------------+
| x . . . . . . . | ON
| . x x x x x x x | OFF
DS-1-2-3-4-------R-+
+-+-+-+ +------------- Radial Bit, Always set to OFF
|
+-------- Drive Select (set only one bit to ON)
Terminator Res.
+-----------------+
| x x x x x x x x |ON
| . . . . . . . . |OFF Terminator ON, means active
+-----------------+
D3126, D3142, D3146H, D51X6H etc.
---------------------------------
SW2
+---------+
| x . . . | ON
| . x x x | OFF
DS-1-2-3-4-+
+-+-+-+
|
+-------- Drive Select (set only one bit to ON)
SW1 Terminator Res.
+-----------------+
| . x x x x x x x |ON
| x . . . . . . . |OFF Terminator ON, means active
+-R---------------+
+------------------ Radial Bit, always set to OFF!
Only the last drive on the cable must be terminated.
J1 Connector for control signal interface
J2 Connector for data signal interface
J4 Frame Ground
**********************************************************************
F E A T U R E S
**********************************************************************
NEC MFM DISKS
Installation Procedure
----------------------
Set the correct setup type and perform a low level format, in the
most cases can the media defect list be entered in this step. If you
cannot find a correct Setup Type (esp. for D3142) use either a lower
cylinder count or special disk installation programms like DISK
MANAGER from ONTRACK or SPEEDSTOR from STORAGE DIMENSIONS.
Run under DOS FDISK and DOS FORMAT, the drive becomes bootable with
the command: FORMAT C:/s.