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Содержание System 2200

Страница 1: ...WANG 2200 Model 2280 2280N Disk Diive User Manual...

Страница 2: ...0 Model 2280 2280N Disk Drive User Manual Copyright Wang Laboratories inc 1 979 700 521 6C WANG WANG LABORATORIES INC ONE INDUSTRIAL AVENUE LOWELL MA 01851 TEL 617 459 5000 TWX710 343 S769 TELEX 94 74...

Страница 3: ...d herein Warning This equipment generates uses and can radiate radio fre quency energy and if not installed and used in accordance with the instructions manual may cause interference to radio communic...

Страница 4: ...ang BASIC 2 Disk Reference Manual Chapter 1 discusses the concept of information storage and retrieval on the disk including an overview of the disk hardware and the principles of disk operation Chapt...

Страница 5: ...ing and Inspection Installation Model 2280 2280N Operating Procedures Power On Procedure Controls and Indicators Loading and Unloading the Removable Disk Platter Disk Cartridge Removal Loading a New D...

Страница 6: ...ck Numbering on the Upper and Lower Surface 6 1 6 Sector Numbering on a Model 2280 1 2280N 1 Disk Surface 7 2 1 Model 2280 2280N Series System Configuration 10 2 2 Model 2280 2280N Dual System Configu...

Страница 7: ......

Страница 8: ...2280N 2 and the 2280 3 2280N 3 with total storage capacities of approximately 26 8 53 6 and 80 4 megabytes respectively To speed processing and provide extensive error correction the disk units are c...

Страница 9: ...f the disk unit they cannot be removed suid are therefore called the fixed disk platters The shaft itself is coupled to a drive motor which spins the disk platters at a constant speed of 3600 rpm Info...

Страница 10: ...N 2 1 Removable 3 Fixed 2280 3 or 2280N 3 1 Removable 5 Fixed Removable Disk Platter Lower Surface Fixed Disk Platter Lower Surface Fixed Disk Platter Lower Surface Fixed Disk Platter Lower Surface Fi...

Страница 11: ...nd correction By off loading responsibility for the above tasks from the CPU to the DPU overall system performcince has been significantly improved For example the COPY function without the DPU requir...

Страница 12: ...sed in sequential order Even in sequential processing operations however the disk is usually as fast or faster than most other external storage devices 1 4 THE DISK PLATTER The storage medium of all d...

Страница 13: ...s is of course needed to enable the system to uniquely identify and access each sector The ECC is used by the system to monitor the integrity of data stored in the sector and to correct certain types...

Страница 14: ...ed The access arm must then move the read write head to the appropriate track and access the appropriate sector There are therefore two distinct physical operations which must be carried out in order...

Страница 15: ...respectively to Each 2280 2280N unit or pair of units is connected to a DPU which is in turn connected to a standard 2200 disk controller The controller can be set to address 10 20 or 30 The tables b...

Страница 16: ...drive connector cables into the DPU After attaching the cables secure them with lock clips or screws at the DPU connection 3 A subsequent 2280N disk drive cables to the first drive and to the DPU 4 P...

Страница 17: ...uration 2280 2280N Figure 2 2 Model 2280 2280N Dual System Configuration Note If a Model 2280 disk drive is already installed in the system it can be field upgraded to a dual drive system by the purch...

Страница 18: ...linking while the disk is accelerating and remains constantly illuminated when the unit is up to speed and the heads are loaded after about 60 seconds 6 The disk is now ready to be used or formatted N...

Страница 19: ...accidental over writing WRITE PROTECT FIXED Switch This switch when depressed disables writing to the fixed disk platters Figure 2 3 The Model 2280 2280N Control Panel 2 4 LOADING AND UNLOADING THE RE...

Страница 20: ...sk Cartridge Step 3 Step 4 With a slight upward pressure cartridge out of the receiver on the cartridge handle pull the Turn the dust cover over and set the disk cartridge into it The arrow on the car...

Страница 21: ...aded in its place See Figure 2 8 Step 6 Close the access door NOTE The disk cartridge must be in the same environment as the 2280 2280N Disk Drive two hours prior to its installation in the drive COVE...

Страница 22: ...e be sure that the head opening is toward the rear of the unit CAUTION Do not apply downward pressure on the cartridge while loading refer to Figure 2 9 The cartridge will not seat properly and damage...

Страница 23: ...Figure 2 8 Loading the Disk Cartridge Figure 2 9 The Wrong Way to Load the Disk Cartridge Figure 2 10 Closing the Access Door 16...

Страница 24: ...atting processes are then performed automatically by the disk processing unit When all sectors on the platter are formatted the platter is ready for storage of programs and data With each Model 2280 2...

Страница 25: ...e F0RMAT DISK statement is available in 2200VP BASIC 2 Release 1 9 2200MVP BASIC 2 Release 1 7 and subsequent releases Examples of valid syntax 10 FORMAT DISK T 310 20 SFORMAT DISK T Dll 30 FORMAT DIS...

Страница 26: ...S PER SURFACE 52 608 LOWEST LEGAL ADDRESS 000 HIGHEST LEGAL ADDRESS 52 607 PERFORMANCE Rotation Speed All configurations 3600 rpm Seek Time position head to track Track to Track 6 00 ms Average 30 00...

Страница 27: ...k controller board in DPU 8 ft 2 5 m cable to power source Operating Environment Temperature o o o o 60 to 80 F 15 to 26 C Relative Humidity 40 to 60 noncondensing Heat Output 1050 Btu hr standing 215...

Страница 28: ...distorted or otherwise damaged covers so that they will provide maximum protection to the platter d Keep food beverages tobacco and smoking accessories off the disk unit and away from the disk platte...

Страница 29: ...el on the top surface of the cartridge for positive identification of information contained on the cartridge Use the following labeling precautions a Use only good quality adhesive labels Inferior lab...

Страница 30: ...at provides protection against catastrophic damage The cabinet or storeroom should be insulated o to prevent the internal temperature from rising above 150 F o 66 C in case of fire 7 Storage Environme...

Страница 31: ...ts Preventive Maintenance Semi annually the equipment is inspected for worn parts lubricated cleaned and updated with engineering changes if any Preventive maintenance minimizes downtime repairs befor...

Страница 32: ...ntroller 2 4 6 8 9 17 20 Disk Cartridge Handling and Storage of 17 Disk Processing Unit DPU 1 2 4 6 8 9 11 17 18 20 Dust Cover 13 15 Loading H 12 15 16 Multiplexing Random Access 5 Read Write Head 2 7...

Страница 33: ...R Technical Accuracy Does the system work the way the manual says it does Readability Is the manual easy to read and understand Clarity Are the instructions easy to follow Examples Were they helpful r...

Страница 34: ...ILED IN THE UNITED STATES BUSINESS REPLY CARD FIRST CLASS PERMIT NO 16 NO CHELSMFORD MA POSTAGE WILL BE PAID BY ADDRESSEE WANG LABORATORIES INC Supplies Division c o Order Entry Dept M S 551 51 IMiddl...

Страница 35: ...WANG ONE INDUSTRIAL AVENUE LOWELL MASSACHUSETTS 01851 TEL 617 459 5000 TWX 710 343 6769 TELEX 94 7421 Printed in U S A 700 521 6C 7 83 2IVI...

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