16 Mar
1999
16 Mar
'99
2:06 p.m.
O.K. I found that. There's still the conflict of wether it is RLL or MFM,
though. I guess I'll try it with the RLL controller that I have...
--
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
-----Original Message-----
From: Don Maslin <donm(a)cts.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Tuesday, March 16, 1999 3:44 PM
Subject: Re: MiniScribe 3438 --- HELLLP!!!!
On Tue, 16 Mar 1999, Jason Willgruber wrote:
> Does anyone on this vast earth know the jumper settings for a
MiniScribe
3438 hard
drive???
______O/_________
O\
This should answer your questions.
- don
************************************************************
Miniscribe Disk Drive Specifications
For
Model: 3438
************************************************************
FORM FACTOR 5.25 inch HH
INTERFACE ST412/ST506
DATA ENCODING METHOD 2,7 RLL
DATA TRANSFER RATE (Mbit/Sec) 7.5
DISK DRIVE CHARACTERISTICS
HEADS 4
CYLINDERS 615
SECTORS/TRACK (512 Byte Sectors) 26
WRITE PRECOMPENSATION CYLINDER 128
REDUCED WRITE CURRENT CYLINDER 615
MINIMUM STEP PULSE RATE (micro-Seconds) 2
UNFORMATTED BYTES/TRACK 15,625
RADIAL TRACK DENSITY (TPI) 588
ROTATIONAL SPEED (RPM) 3,600
UNFORMATTED CAPACITY (Millions of Bytes) 38.4
FORMATTED CAPACITY (Millions of Bytes) 32.7
FORMATTED CAPACITY (MB = 1,048,576 Bytes) 31.2
ACCESS TIMES (mSec)*
SINGLE TRACK 15
ONE-THIRD STROKE** 85
MAXIMUM 190
*(BASED ON A 2 MICRO-SECOND STEP RATE)
*(INCLUDES SETTLING)
**(APPROXIMATION OF AVERAGE)
POWER REQUIREMENTS
DISSIPATION (Watts)
TYPICAL 14.5
MAXIMUM 17.4
CURRENT (Amps)
+5 V DC (+ or - 5%) 0.5
+12 V DC (+ or - 5%) 1.0
MAXIMUM STARTUP CURRENT 3.5
PHYSICAL DIMENSIONS
HEIGHT (in) 1.625
WIDTH (in) 5.75
DEPTH (in) 8
WEIGHT (lbs) 2.2
OPERATIVE ENVIRONMENTAL LIMITS
MINIMUM TEMPERATURE (Centigrade) 4
MAXIMUM TEMPERATURE (Centigrade) 50
THERMAL GRADIENT (Degrees C/Hour) 10
RELIABILITY
MTBF (Hours) 20,000
MTTR (Minutes) 30
COMPONENT DESIGN LIFE (Years) 5
**************************************************
3212 3412 3425/3438
------ ------ -----------
PIN 1 PIN 1 PIN 1
ON/OFF CLOSED / NU 1 CLOSED / NU 1 ON / NU
OFF CLOSED / TEST 2 CLOSED / TEST 2 ON / TEST
OFF CLOSED / TEST 3 CLOSED / TEST 3 ON / TEST
OFF CLOSED / TEST 4 CLOSED / TEST 4 ON / TEST
ON OPEN / DS 4 5 OPEN / DS 4 5 OFF / DS 4
ON OPEN / DS 3 6 OPEN / DS 3 6 OFF / DS 3
ON OPEN / DS 2 7 OPEN / DS 2 * 7 OFF / DS 2
OFF CLOSED / DS 1 8 CLOSED / DS 1 * 8 ON / DS 1
SHUNT SHUNT SWITCH
* NOTE: If twisted cable or second drive,7 & 8 are switched;7 on-8 off.