Page 1: ...n oiIN 48 2E I I i 1 f i I i R iil lllCS JI L i iiVl TM81 FLEH IBIJEJli i i PRODUCT SPEfi l1ijN USER S MANUAL...
Page 2: ...n approval of Tandon Corporation This document is intended to provide the user with detailed information adequate for the efficient installation operation and service of the equipment involved However...
Page 3: ...8 1E TM848 2E THINLINE FLEXIBLE DISK DRIVE 48 TRACKS PER INCH PRODUCT SPECIFICATION AND USER S MANUAL anaiiii CORPORATION 20320 PRAIRIE STREET CHATSWORTH CALIFORNIA 91311 COPYRIGHT 1983 TANDON CORPORA...
Page 4: ...and Operational Specifications 2 1 Reliability Specifications 2 1 Environmental Specifications 2 1 OPERATION 3 1 3 2 3 3 3 4 3 5 3 6 Introduction Unpacking The Drive Preinstallation Checkout Mounting...
Page 5: ...ectrical Interface Characteristics Control and Data Timing Requirements LSI Circuit Board Assembly Non LSI Circuit Board Assembly Recording Media Diskette Care and Handling TABLES Title Electrical and...
Page 6: ...a description of the major features physical and functional speci fications mounting and power requirements the interface and typical timing characteris tics of the TM848 1E and TM848 2E drives 1 2 P...
Page 7: ...is provided for the insertion of a diskette The diskette s jacket is accurately positioned by plastic guide rails Its location is ensured by the back stop and disk ejector Closing the diskette lever a...
Page 8: ...n error message flashes on the front panel L E D in the following sequence 3 flashes then 4 No index pulse with lever closed 1 3 Opening and closing the diskette lever is required to repeat a test tha...
Page 9: ...FIGURE 1 1 OISI DRIVE...
Page 10: ...1 contains the physical dimensions of the drive 2 2 ELECTRICAL AND OPERATIONAL SPECIFICATIONS The electrical and operational specifications are located in Table 2 1 2 3 RELIABILITY SPECIFICATIONS The...
Page 11: ...19 0 MM 1 60 8 550 40 6MM I I 217 2 MM I j O II OO MM NOTES 1 DIMENSIONS ARE GIVEN IN INCHES METRIC EQUIVALENTS ARE IN PARENTHESES 2 TOLERANCE ON ALL DIMENSIONS IS 020 INCH 3 WEIGHT IS APPROXIMATELY 5...
Page 12: ...Start Time Seek Time Track to Track Head Settling Time Average Track Access Time including head settling time Data Transfer Rate 6 3 x 10 passes per track 48 TPI both drives 77 tracks per drive 154 t...
Page 13: ...Stepper Motor Electronics Power Dissipation Shipment 6 536 FRPI 6 816 FRPI 0 8 megabyte per disk 1 6 megabytes per disk 24 volts 10 percent at 700 milliamperes typical For surge current requirements...
Page 14: ...250 FIGURE 2 2 24 VOLT D C CURRENT CONFIGURATION 1 Configured for stepper motor disabled until motor comes up to speed 1 8 amps typical surge r STEPPER MOTOR ENABLED 2 5 2 0 1 5 1 0 0 5 C U R R E N T...
Page 15: ...Time To Repair One in 10 12 bits One in 10 6 seeks 10 000 power on hours 30 minutes TABLE 2 3 ENVIRONMENTAL SPECIFICATIONS Temperature Operating media dependent Nonoperating Relative Humidity Operati...
Page 16: ...sure that the connectors are firmly seated 3 3 MOUNTING THE DRIVE The drive has been designed so it may be mounted in any plane i e upright horizontal or vertical When mounted horizontally the Logic c...
Page 17: ...mum length of ten feet and have a 26 to 28 gauge conductor compatible with the connector to be used It is recommended that the interface cable have a characteristic impedance of 100 ohms 3 2 All inter...
Page 18: ...ough 4 provide a means of daisy chaining a maximum of four drives to a con troller Only one can be true low at a time An undefined operation might result if two or more drives are assigned the same ad...
Page 19: ...iting all ones be equal to twice the nominal data rate 0 1 percent Host controllers may implement write precom pensation circuits that recognize worst case 3 4 patterns and adjust the Write Data wave...
Page 20: ...from Track o This signal is false high when the selected drive s Read Write head is not on Track O 3 5 WRITE PROTECT The Write Protect signal is provided to indi cate to the user that a write protecte...
Page 21: ...has gone from a Ready to a Not Ready condition while deselected This line is reset on the true to false transition of Drive Select if the drive has gone to a Ready condition Vout False 2 4 volts mini...
Page 22: ...J SJ DIRECTION SELECT STEP TRUE READY I I WRITE GATE I WRITE DATA I 1 VALID READ DATA J SIGNAL t SEE NOTE 90 MILLISECONDS MAXIMUM NOTE 150 MILLISECONDS MINIMUM DELAY MUST BE INTRODUCED AFTER DRIVE SEL...
Page 23: ...ve at a 3 8 time Drive Select is implemented by shorting one of the four connections using a shorting plug The drive comes equipped from the fac tory with DS1 installed All outputs are gated with driv...
Page 24: ...3 M4 M1 M3 M4 Motor Control Signal Low True MOL X Motor Control Signal High True MOH X Motor Control Select MC1 MC4 X Ready R X True Ready TR X Lever Lock Solenoid DL X In Use Lever Lock Option D X In...
Page 25: ...e second turn off delay is in effect regardless of which M3 M4 con figuration is implemented M4 MOTOR CONTROL Enables five second motor off delay timer Motor Control only with MC1 M4 options Motor Con...
Page 26: ...via Jl 4 X X Motor Control selected via Jl 6 X X Motor Control selected via Jl 8 X X Motor Control selected via Jl 24 U6 o ONL U7 n00 MOH n 00 OOHL OOOM OOOL 00 M4 00M3 00 M I o PS ro LqJ PS 480000S4...
Page 27: ...OO 0 D52 I BOO 0 D5 I 00 R 00 D 00 53 00 52 0051 00 DC 00 25 00 TR 00 MC4 00 MC3 00 MC2 00 MCI 00 IC 00 XC oWP o ONP OMOH o OMOl MIOO UI3 M300 M400 DlOO DM 00 HlOO Oll o ONl UIO FIGURE 3 4 NON LSI CIR...
Page 28: ...signal to the controller indicating that a double sided diskette is installed index hole two is present This option is factory installed LEVER LOCK OPTIONS D DL LL NL The lever lock solenoid an optio...
Page 29: ...tic mode 1 Make a note of which jurnpers are installed for normal operating condi tions see Table 3 3 2 Remove the DL Ml M3 and M4 jumpers 3 Install the DM jumper and supply power to the drive 4 Using...
Page 30: ...4 Seek to Track 76 and turn on spindle motor This test seeks the carriage to Track 76 and turns on the spindle motor This test may be used to check index to data burst and azimuth X X 5 Seek to Track...
Page 31: ...ensor X X l2 C Monitor the status of the lever position switch This test is used to check the lever position switch The front panel L E D flashes on and off with the opening and closing of the diskett...
Page 32: ...data and can result in damage to the Read Write heads Figure 3 5 contains an illustration of the physical configuration of the diskette The 7 BB inch diskette is oxide coated flexible mylar It is encl...
Page 33: ...DISKETTE AND TO YOUR DRiVE iNSERT DISKETTE CAREFULLY UNTIL THE BACKSTOP IS ENCOUNTERED RETURN THE DISKETTE TO ITS JACKET WHEN NOT iN USE KEEP THE DISKETTE AWAY FROM MAG NETIC FIELDS DISKETTES SHOULD...
Page 34: ...andon CORPORATE OFFICES 20320 PRAIRIE STREET CHATSWORTH CA 91311 TELEPHONE NO 213 993 6644 TELEX NO 194794 TWX NO 910 494 1721 PIN 179049 001A T5007A 5 83 PRINTED IN U S A...
