Ampex Data Systems ATM 300 User's Manual
Contents
1. Rack Mounting Ampex ships the ATM as a desk top unit However the unit can be mounted into a standard 19 inch 284 mm rack using the hardware provided To mount the unit into a rack install the two brackets on either side of the unit using the four machine screws provided Then mount the completed assembly to the rack rails Data Connections The ATM unit provides fiber optic connectors on the front panel and HOTLink connectors on the rear panel Figure 2 shows the cable connections See Table 1 for cable specifications Ampex 1308903 02 ATM 300 Series Multiple ATM 300S M Connections FRONT PANEL REAR PANEL RECEIVER SERIAL IN FIBER OPTIC HOTLINK DEVICE INTERFACE DIS 160i TRANSMITTER SERIAL OUT ATM 300 SERIES NOTE SEE TABLE 1 FOR CABLE AND CONNECTOR SPECIFICATIONS Figure 2 Single OC 3 Connection 1 5 Multiple ATM 300S M Connections To synchronize data transfers to and from the multiple tape drives connect a user supplied SyncStart signal to multiple ATM 300S M units The SyncStart signal synchronizes the data transfers to the tape drives during record and from the tape drives during playback Figure 3 shows a record playback configuration across multiple tape drives with synchronized OC 3 interfaces The SyncStart signal is a level sensitive transistor to transistor logic TTL signal A high high TTL level or no connection signal enables data to and from the tape drive A low low level TTL2. ETC ENABLE A O DISABLE Figure 3 Multiple OC 3 Connection Ampex 1308903 02 ATM 300 Series Switches and Indicators 1 6 Switches and Indicators Table 2 describes the front and rear panel switches and indicators Table 2 Switches and Indicators Panel Name Description Front DATA FLOW Determines how the ATM unit responds to a missing switch or invalid OC 3 input CONTINUOUS Continues record and playback operations at 155 52 Mbits sec as determined by an internal crystal oscillator This provides a valid OC 3 output during playback regardless of the OC 3 input status GATED Pauses record and playback operations until valid OC 3 input is restored The ATM unit resumes normal operation after the OC 3 input is restored TRANSMITTER EMPTY Indicates data rate from the tape drive is too slow yellow This is to be expected whenever the tape drive is not indicator supplying data FULL Indicates data rate from the tape drive is too fast This red indicator is an abnormal condition and most likely indicates that the tape drive is not using its write input to regulate its playback rate internal playback clock should be disabled OK green Indicates correct data rate from the tape drive indicator RECEIVER OK Indicates ATM unit receiving valid OC 3 optical green indicator signal input POWER green Indicates ATM unit is powered up indicator POWER switch ON Power
3. oscilloscope waveform monitor etc to a high frequency output use the appropriate termination resistor at the input of the instrument unless the instrument is terminated internally When inserting or removing printed wiring assemblies PWAs cable connectors or fuses always turn off power to the affected portion of the equipment After removing power allow sufficient time for the power supplies to bleed down before reinserting PWAs To avoid damage to PWA components from static electricity use standard static safe handling procedures such as wearing a grounded wrist strap and working on grounded conductive surfaces vi This equipment generates uses and can radiate radio frequency energy If not installed and used in accordance with the instruction manual it may cause interference to radio communications This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of FCC rules which are designed to provide reasonable protection against such interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the users will be required to correct the interference at their own expense This system was tested using the shielded interconnect cables provided with the unit Failure to use the cables provided may result in radio interference outside acceptable limit ATM 300 Series Co
4. AMPEX AIM 300 Series Tape Recorder Interface Installation and Operation DID NOTICE The contents of this technical manual have been checked and are believed to be accurate However no responsibility is assumed for any inaccuracies in the information provided herein Ampex Corporation reserves the right to make changes without notice to improve reliability function or design TRADEMARKS DIS is a registered trademark of Ampex Corporation Prepared by Technical Publications Ampex Corporation 500 Broadway Redwood City CA 94063 3199 Copyright 1998 by Ampex Corporation All rights reserved Part No 1308903 02 Issued March 1998 Technical Information Customer Support Ampex provides extensive customer support for its products These services are outlined below When requesting services please supply the following information most of which can be found on the identification name plate located on the system s rear panel to help expedite your request e Model e Serial Number e Catalog part number e Dateof purchase e Name and address of your organization Field Service For service quotations and scheduling call the Ampex Customer Service Center at 800 DST SRVC 800 378 7782 or 719 596 2000 Parts and Accessories Within the United States call 800 227 8402 for information and quotations on replacement parts lists of spares and accessories to use with your system Outside the United States call 719 570 3
5. DST 719 570 3378 in Colorado Springs Colorado USA or fax 719 570 3289 Technical Support If you require information or technical assistance that is not available in your local area contact the Ampex Customer Service Department for assistance Ampex Corporation Customer Service 600 Wooten Road Colorado Springs CO 80915 3597 Telephone 800 DS T SRVC 800 378 7782 or 719 570 3378 Fax 719 570 3289 International Telephone 719 570 3378 E mail address dstsrvc ampex com USA or dstsupp 0 ampexgb co uk UK Website http www ampex com Training Services Ampex offers technical maintenance training on this and other data storage products on a scheduled basis For further information regarding training call 800 227 8402 719 570 3714 719 570 3329 FAX Safety and First Aid Suggestions No matter how well electrical equipment is designed you can be exposed to dangerous electrical shock when protective covers are removed for service or other activities Therefore you should consistently observe all safety regulations be sure that you thoroughly understand the dangers related to electrical hazards and have some knowledge of first aid required for electrical injuries In addition follow these general safety practices cm ey ter Lf eg E n 72 OORT LS KN P mu l E n d cd o 3 Do not touch or adjust unprotected circuit controls or dress TM Pa leads with the power on Always avoid placing parts of the bo
6. Start signal low until all tape drives are ready to deliver data and the unit accepting data is ready Set the common SyncStart signal high to begin providing data to the units accepting data 1 8 Self Test To perform the self test 1 Loop the fiber optic and HOTLink cables as shown in Figure 4 FRONT PANEL REAR PANEL RECEIVER HOTLINK LOOP TRANSMITTER FIBER OPTIC LOOP ATM 300 Figure 4 Self Test 6 Ampex 1308903 02 ATM 300 Series Self Test 2 Place the POWER switch to the ON position The following indicators should be on POWER RECEIVER OK TRANSMITTER OK 3 Place the TEST LOOP switch to the TEST position 4 Press the RESET button The ERROR indicator should go off and remain off indicating unit is operating properly If necessary check cable connections Otherwise call your local Ampex regional office Ampex 1308903 02 7 C TM Ampex Corporation 500 Broadway Redwood City CA 94063 3199 Part Number 1308903 02
7. dy in series between ground and circuit points To avoid burns do not touch heavily loaded or overheated components without taking precautions Remember that some semiconductor cases and solid state circuits carry high voltages Do not assume there is no danger of electrical shock when power is off Charged capacitors can retain high voltages for a long time after power is turned off You should discharge capacitors through a suitable resistor before touching any circuit points Don t take chances Be fully trained Only qualified personnel should operate and maintain Ampex equipment Muscular spasm or unconsciousness can prevent a victim from freeing himself from the electrical power If someone appears to have received an electrical shock turn power off before attempting first aid DANGER Do not touch electrical shock victims or their clothing before disconnecting power You can also become a shock victim Good Practices If you cannot turn off power immediately very carefully loop a length of dry nonconducting material such as rope insulating material or clothing around the victim and pull him free of the power Avoid touching the victim or victim s clothing until free of power Immediately start the appropriate first aid procedures When testing or servicing the equipment described in this manual keep in mind the following standard good practices When connecting any instrument
8. figuration Table 1 lists the ATM 300 specifications Table 1 Specifications Parameter Specification Data Interfaces Fiber Optic ATM Asynchronous Transfer Mode OC 3 Optical Carrier and SONET formats Electrical Serial Cypress HOTLink Data Transfer Rate OC 3 19 44 MB sec 155 52 Mbits sec HOTLink 0 32 MB sec 0 256 Mbits sec Optical Wavelength 1300 nm Optical Connectors Duplex SC Ampex 1308903 02 1 Unpacking and Inspection ATM 300 Series 1 2 13 1 4 Table 1 Specifications Continued Parameter Specification Optical Data Cables 62 5 125 um multimode fiber ATM 300 and ATM 300M 8 3 125 um singlemode fiber ATM 300S Electrical Data Cables Ampex provides the following accessory cable kits Ampex Part No Size 1308564 01 120 in 305 cm standard 1308565 01 180 in 457 cm 1308566 01 300 in 762 cm 1308567 01 600 in 1524 cm SyncStart Connector BNC Power Requirements 100 240 Vac 47 63 Hz single phase 150 watt maximum Dimensions 19 480 mm rack mountable 17 0 W x 1 875 H x 8 0 D 432 mm x 48 mm x 203 mm Unpacking and Inspection Perform the following inspection upon receipt of the unit 1 Unpack and check the unit for shipping damage If equipment is damaged notify the carrier immediately 2 Check equipment received against the packing list to ensure that the shipment is complete If any shortages exist promptly contact the sales representative
9. ntents Contents Ampex 1308903 02 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 Introduction otn hi er e tp ette etri ee ele dani eon ee aided DES PHONE ARR ER Unpacking and Inspection eese enne nennen Rack Mounting oie deep ot tent Hed Data Connections c a etr delete EP ius eae EPOR et Multiple ATM 300S M Connections essere Switches and Indicators essor aria FER eerte veftes Operation Self Test vii ATM 300 Series Introduction 1 0 Introduction This manual describes how to install and operate the Ampex ATM 300 Series Tape Recorder Interface 11 Description Ampex provides three models of the ATM 300 Series Tape Recorder Interface e ATM 300 Multimode fiber physical layer interface e ATM 300S Singlemode fiber physical layer interface with SyncStart e ATM 300M Multimode fiber physical layer interface with SyncStart These three units convert OC 3 Optical Carrier data to HOTLink serial data for recording to an Ampex DIS tape drive During playback the units convert HOTLink serial data from the DIS tape drive to OC 3 optical data at a continuous 19 44 megabytes MB per second Figure 1 shows a typical single unit configuration IN RECORD ASYCHRONOUS z DIS 160i 162i VE OR TRANSFER TAPE DRI MODE ATM OUT peas SERIES HOTLINK DIS 260i 262i 860i 862i _ SWITCH ACL PLAY FIBER OPTIC DEVICE Figure 1 Typical Con
10. or ground disables data to and from the tape drive Tie all SyncStart inputs to a common control signal to synchronize data transfers across multiple tape drives The ATM unit internally debounces the SyncStart signal so that the low to high transition enables data to flow immediately For high to low transitions the unit debounces the signal for approximately 3 ms before it disables the data flow Therefore if you use a toggle switch or relay to provide a contact closure to ground as the SyncStart input then the first disconnect from ground will enable data flow If the switch or relay is noisy and produces bounces back to ground the data flow will remain enabled Only a 3 ms or greater low level signal will disable the data flow Typically switch or relay contacts open with much less noise than when they are closed Ampex 1308903 02 3 Multiple ATM 300S M Connections ATM 300 Series FIBER OPTIC DEVICE FIBER OPTIC DEVICE FIBER OPTIC DEVICE FRONT PANEL REAR PANEL RECEIVER OUT HOTLINK INTERFACE TRANSMITTER IN SYNCSTART ATM 300S M FRONT PANEL REAR PANEL RECEIVER OUT HOTLINK INTERFACE TRANSMITTER IN SYNCSTART ATM 300S M FRONT PANEL REAR PANEL RECEIVER OUT HOTLINK INTERFACE TRANSMITTER IN SYNCSTART ATM 300S M O SERIAL IN DIS 160i SERIAL OUT SERIAL IN DIS 160i SERIAL OUT SERIAL IN DIS 160i SERIAL OUT SYNCSTART SIGNAL TOGGLE SWITCH RELAY
11. s up the ATM unit OFF Powers down the ATM unit Rear TEST LOOP TEST Self test operation switch NORMAL Normal operation ERROR red Indicates during normal operation that a valid indicator HOTLink input is missing RESET button Resets the ATM unit during normal operation For setting internal playback clock options see DIS Tape Drive or ACL Installation and Operation manual Ampex 1308903 02 Operation ATM 300 Series 1 7 Operation To operate the ATM units 1 For initial installations perform the self test procedure in paragraph 1 8 2 Verify the TEST LOOP switch on the rear panel is in the NORMAL position 3 Place the POWER switch to the ON position The POWER indicator should light 4 Verify the ERROR indicator rear panel is off 5 Verify the tape drive is setup for External Playback Clock see DIS Tape Drive or ACL Installation and Operation manual 6 Set the DATA FLOW switch to CONTINUOUS or GATED as required see Table 2 7 Perform record or playback operations For synchronized data transfers in multiple OC 3 interfaces see paragraph 1 5 control the SyncStart signal as follows a For record operations hold the common SyncStart signal low until all tape drives are ready to accept data and the desired input data is available Set the common SyncStart signal high to begin delivering data from the ATM units to their respective tape drives b For playback operations hold the common Sync
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