HP 27140A, Hardware Reference Manual

Page 1: ...with Modem Control Hewlett Packard Company Roseville Networks Division 8000 Foothills Boulevard Roseville California 95678 Hardware Reference Manual Fli HEWLETT a PACKARD Card Assembly 27140 60001 Update 1 October 1988 Manual Part Number 27140 90007 E0688 Printed in U S A June 1988 ...

Page 2: ...ein or for incidental or consequential damages in connection with the furnishing performance or use of this material Hewlett Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett Packard This document contains proprietary information which is protected by copyright All rights are reserved No part of this document may be photocopi...

Page 3: ...rinting unless it appears as a prior update the edition does not change when an update is incorporated A software code may be printed before the date this indicates the version level of the software product at the time the manual or update was issued Many product updates and fIXes do not require manual changes and con versely manual corrections may be done without accompanying product changes Ther...

Page 4: ...s used in the manual to indicate circuit common connected to a grounded chassis The warning sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in injury Do not proceed beyond a warning sign until the in dicated conditions are fully understood and met The caution sign denotes a hazard It calls attention to an oper...

Page 5: ... ofmaterial In sulators can easily build up charges in excess of20 000 volts A person working at a bench or walking across a floor can build up a charge of many thousands ofvolts The amount of static voltage developed depends on the rate ofgeneration ofthe charge and the capacitance ofthe body holding the charge Ifthe discharge happens to go throUgh a semiconduc tor device and the transient curren...

Page 6: ... to EIA specifications RS 232 C or ccrrrrecommendations V 24 and V 28 These protocols are designed specificallyfor use with modems to transmit data over telephone networks worldwide CCITI V 24 is the signal naming and specification recommendation and CCITI V 28 is concerned with the electrical characteristics of those signals To ensure proper installation and operation use this manual along with t...

Page 7: ...r Use with Terminals 1 5 Suggested Cable for Modem Installations 1 5 RS 232 C Junction Panel 1 5 Documentation Required for Installation 1 6 Product Identification 1 6 Support Strategy 1 7 Cable Repair 1 7 User Responsibility 1 7 System Console 1 7 Buffer Capacity 1 8 2 Installation I Configuration Site Preparation 2 1 Unpacking and Examining the PCA 2 2 Storage 2 2 Checking Power Requirements 2 2...

Page 8: ...3 3 Functional Blocks 3 4 Memory Interface Controller 3 4 Clock Driver 3 5 Microprocessor 3 5 Z SO to SCC Command Interface 3 5 EPROM 3 5 RAM 3 5 Serial Communications Controllers 3 6 Line Drivers and Receivers 3 6 4 Troubleshooting Description ofSelfTest 4 1 Results 4 1 In Case ofFailure 0 4 2 Troubleshooting 4 2 5 Component Parts Component Parts 5 1 Ordering Information 5 2 6 Reference Other Ref...

Page 9: ...y setting for the information transmission rate is 9600 baud The MUX is also programmable to process rates from 50 to 19200 baud See Chapter 2 Installation and Configuration for the information needed to use the six communications ports This multiplexer provides for Input and Output 110 through multiple modems from remote locations via telephone lines This product has the appropriate control lines...

Page 10: ...grammable character size 5 6 7 or 8 data bits Parity overrun framing error check detects transmission faults Yumware based selftest helps assure card integrity Programmable device XON XOFF handshaking to pace MUX output data transmission On board buffering with DMA capability to send receive data for multiple ports in a single transfer Channels Six channels full duplex Buffering On card buffering ...

Page 11: ... answer mode Modem connection timer Lost receiver ready timer No activity timer Host control ofevery card output modem line Communications Mode Asynchronous bit serial Break Detection Break conditions are recognized by the card and cause interrupts to the host The MUX can also generate break conditions as they are needed A break is a space condition for two consecutive character times Optional Han...

Page 12: ...be maintained between 5 and 95 The PCA includes one EPROM Erasable Programmable Read Only Memory chip The EPROM contains the on board self test and download monitor programs Selftest is described in Chapter 4 Troubleshooting The download monitor directs the downloading of control codes for board operation and insures that they are correct and stored properly The EPROM also provides enough on board...

Page 13: ...Kit for 92211R Cabinet pIn 5001 5280 Test Hood The following cables are designed to connect the MUX RS 232 C Junc tion Panel to your terminals HP 13242M 5 metres HP 13242N 5 metres HP 13242Y 5 metres HP922190 3 8 metres The HP 922190 cable 5 metres long is designed to connect the MUX to a modem The RS 232 C Junction Panel 28659 60005 is a six port junction box which provides serial asynchronous in...

Page 14: ...ied by a part number 27140 60001 and a date code consisting of a letter and four digits A 2450 printed below the part number This information is printed on a label affIXed to the card The label also has two other alphameric fields Both are production sequence numbers and will not affect you However your CE may need to refer to them occcasionally so it is a good idea to record all ofthis informatio...

Page 15: ...s designed with an extremely compact cable connector Because of the tolerances for the cable connector it is impossible to repair or modify the board connector end of the PCA to Panel cable Any failure of the cable at the board connector end requires replacement of the cable assembly The junction panel end of the cable was fabricated using a conventional connector Tables in Chapter 6 Reference lis...

Page 16: ...baud rates for the HP 27140A Table 1 1 ButTer Capacity Baud Rate Limits Port Baud Rate 1 2 3 4 0 19200 19200 19200 9600 1 4800 19200 19200 9600 2 4800 19200 2400 9600 3 4800 unused 2400 9600 4 4800 unused 2400 9600 5 4800 unused 2400 9600 Slower rates may be used All of these speeds assume full duplex operation and near 100 utiliza tion of channel capacity Operation at higher speeds than noted may...

Page 17: ...ts ofthe HP 27140A are susceptibl to destruction or degradation by electrostatic discharge See the safety considerations in the front ofthis manaul To handle this card use only the edges and ex tractor levers to avoid damage to components There is no site preparation required for this product other than proper installation ofthe host computer Using the MUX will require that several cables be attac...

Page 18: ...quirements from the host computer You must verify that the computer can accommodate this additional power load Refer to Table 2 1 for the power requirements of the MUX Table 2 1 Power Requirements for the UP 27140A Power Voltage Mean level 2alevel 5 6 90W 12 06W 12 1 01W 1 90W 12 1 62W I SOW Mean power required can be thought of as the nominal power require ment of the card For the purposes of cal...

Page 19: ... the card in place Hold the card firmly by the extractor levers and gently push it into the track like guides ofthe slot Once the card touches the back plane connectors you ll notice the resistance press itfirmly into the backplane As the card reaches its limit of travel the free ends ofthe ex tractor levers will start to fold down against the card Press on them until the card is fully seated in t...

Page 20: ...lately two inches 5 em from the connection will help you identify it Press this connection fumly onto the PCA mounted con nector with the cable exiting the connector on the bottom Press the grom met fumly into the slot on the cable grounding bus below the card cage If yoUr computer is equipped with a retaining spring below the grounding bus ensure the grommet is fully seated in the spring These st...

Page 21: ...Figure 2 1 HP 27140A Option 019 Figure 2 2 HP 27140A Option SSO Installation I Configuration 2 5 ...

Page 22: ...Cable con nectors should be secured in place with screws ifthey are provided For customers fabricating their own cables Chapter 6 contains tables with the pin assignment specifications When making these cables remember that the ports are each wired to emulate DCE As stated in Chapter 1 General Information the MUX is fully program mable To configure port 0 for baud rates other than 9600 and to prog...

Page 23: ...r sub assembly part numbers A Channel Input Output CIO PCA fits into a CIO backplane gets its power from the backplane and receives data from the host computer and peripheral devices The multiplexer PCAconverts signals and data from the CIO backplane protocol to the RS 232 C protocol used by peripherals Conversely the MUX also converts data from up to six RS 232 C peripherals to the CIO protocol T...

Page 24: ...ng Ifyou in tend to make your own cables for a non Hewlett Packard peripheral see Chapter 6 and please read the next two paragraphs carefully Each port has the signal lines to support both Data Communication Equipment DCE such as modems and Data Terminal Equipment DTE such as terminals The data lines are arranged to accept data directly from DTE This feature makes the computer appear to be a data ...

Page 25: ...kplane The backplane interface as sembles data headed to the computer into the format used on the CIO backplane Data from the computer are decoded and routed to whatever controller or data storage locations are dictated by the computer The midplane circuits manipulate data which come into the RAM from either the backplane or the frontplane By following programs in the EPROM and the RAM the Z SO mi...

Page 26: ...cation control and handshaking with the CIO back plane It is accessed by the Z SO microprocessor as an I O device for con trol signals The BIC also holds the CIO backplane open while the Memory Interface Controller MIC makes a DMA transfer of data to or from the RAM on the PCA Duririg a DMA transfer the CIO backplane reads and or writes a packet of six bytes to or from the BIC data register The MI...

Page 27: ...th the programs in the EPROM the Z SO can control port 0 and check programs loaded into the RAM In some computer systems port 0 is where the system control console will be attached The Z SO is able to control ports 1 to 5 only after the computer loads an additional frontplane control program into the RAM This additional program comes with your computer operating system The microprocessor also arra...

Page 28: ... lines A Counter Timer Parallel 110 controller associated with the scescontrols the SR and DM modem con trol signals ofthe RS 132 ports The Z SO controls and monitors the SCC via the Z SO to SCC command interface The line drivers and receivers convert signals being sent at one voltage level to another Since peripherals require signals at higher voltages and different polarities than the computer t...

Page 29: ...s the on board circuitry ofthe EPROM itself the RAM operation of the Z SO microprocessor and resident DMA and timer chip operation The test hood allows further testing of the Z SO Serial Communications Controller SCC circuits the line drivers and receivers See Options and Additional Equipment in Chapter 1 for test hood part number The normal method ofreceiving the results of the selftest is throug...

Page 30: ...neer and give him the results ofthe selftest This will enable him to resolve any problem more quickly Since the MUX is the hub of a network of devices including the host com puter it may appear to malfunction when another device has actually failed When you are faced with such a failure the troubleshooting tree in FIgUre 4 1 will help isolate the problem When checking the device protocol settings ...

Page 31: ...el Ifthe trouble moves to the new port terminal then the problem was on the computer to junc tion panel side of the circuit At this point having eliminated the others the junction panel is the only remaining suspect component Ifyou must contact HP resources please begin with you HP Sales and Support Office A list ofthese offices is included at the end of this manual Ifthe solution is beyond their ...

Page 32: ...ting Run Online Diagnostic Press Q cntrl key Check all device potocol settings XON XOFF Baud Rate Block Mode In Break etc Tests MUX Card Tests MUX Card Reset Terminal Test Terminal Yes Figure 4 1 Troubleshooting Tree for the UP 27140A Replace Terminal ...

Page 33: ...0A PCA Figure 7 4 shows the locations of the PCA components Table 5 1 is the listing of all component parts for the MUX in reference designation order The following information is provided in the table 1 Reference designation of the part 2 The Hewlett Packard part number 3 Part number check digit CD 4 Total quantity OTY 5 Description of the part 6 A five digit manufacturer s code number of a typic...

Page 34: ...ual To order a part listed in the component parts table quote the Hewlett Packard part number with the check digit and indicate the quantity required The check digit will insure accurate and timely processing of your order To order a part that is not listed in the table specify the following infor mation 1 Identification ofthe product containing the part 2 Description and function of the part 3 Qu...

Page 35: ...CITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C24 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C25 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C26 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C27 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C28 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C29 0160 4810 8 CAPACITOR FXD ...

Page 36: ...C02X7R103KI00C C74 0160 6500 7 CAPACITOR FXD 0IUF 10 100VDC CER 02802 CAC02X7RI03KI00C C75 0160 6500 7 CAPACITOR FXD 01UF 10 100VDC CER 02802 CAC02X7R103K100C C76 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C77 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C78 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC CER 28480 0160 4810 C79 0160 4810 8 CAPACITOR FXD 330PF 5 100VDC C...

Page 37: ...S U75 1820 3825 4 1 IC COUNTER TIMER PARALLEL I O 28480 1820 3825 U78 1818 3059 1 IC NMOS 65536 64K DYN RAM 150 NS 3 S 28480 1818 3059 U83 1820 3331 7 IC SERIAL COMMUNICATIONS CONTROLLER 07653 Z8530PS U85 1820 3331 7 IC SERIAL COMMUNICATIONS CONTROLLER 07653 Z8530PS U87 1810 0122 7 NETWORK RES 14 DIP 3 3K OHM X 13 73138 899 1 R3 3K U88 1818 3059 1 IC NMOS 65536 64K DYN RAM 150 NS 3 S 28480 1818 30...

Page 38: ...Products Co Newark New Jersey 07114 22525 Dupont Connector Systems Camp HilI Pennsylvania 17011 24546 Corning Electronics Santa Clara California 95050 27014 National Semiconductor Corp Santa Clara California 95052 28480 Hewlett Packard Co Corporate Hq Palo Alto California 94304 52111 Airco Welding Products Union New Jersey 07083 56289 Sprague Electric Co North Adams Massachusetts 01247 73138 Beckm...

Page 39: ...ion beyond the scope ofthis manual Carr Joseph J Z80 Users Manual Reston Virginia Reston Publish ing Company 1980 CCITT Recommendation V 24 1972 CCITI Recommendation V 28 1972 EIA Standard RS 232 C August 1969 McGilton Henry and Morgan Rache Introducingthe Unix System New York McGraw Hill Book Company 1983 McNamara John E TechnicalAspects ofData Communication second edition Bedford Massachussetts ...

Page 40: ...or desirable for your application Conditioning may be applied only to leased circuits The terminal which is used by the computer operator to control the run ning ofthe computer Duplex transmission is the simultaneous bi directional transmission of data between two points It is frequently called Pull Duplex Electrical Industry Association An association ofelectrical manufac turers who have agreed t...

Page 41: ...ferred in one direction only and no provision is made for transmission in the other direction See also Duplex A voltage limiter made by pairing two zener diodes The resulting restric tion to voltage is bi polar and varies according to design The CCITT recommended standard defming the signals and their charac teristics for use in transmissions on international switched telephone net works The CCITT...

Page 42: ...3 White 48 TRO 4 Brown 47 RRO 4 White 54 SRO 5 Gray 53 lCO 5 White 49 SGO 6 Blue 56 RDI 6 Red 55 SDI 7 Orange 16 CSI 7 Red 17 RSI 8 Green 58 DMI 8 Red 37 TR1 9 Brown 57 RR1 9 Red 59 SRI 10 Gray 18 lei 10 Red 38 SGI 11 Blue 39 RD2 11 Black 60 SD2 12 Orange 42 CS2 12 Black 21 RS2 13 Green 41 DM2 13 Black 61 TR2 14 Brown 40 RR2 14 Black 19 SR2 15 Gray 20 IC2 15 Black 62 SG2 6 4 Reference ...

Page 43: ... 35 TR3 19 Brown 14 RR3 19 Yellow 32 SR3 20 Gray 11 IC3 20 Yellow 34 SG3 21 Blue 05 RD4 21 Purple 26 SD4 22 Orange 44 CS4 22 Purple 23 RS4 23 Green 43 DM4 23 Purple 01 TR4 24 Brown 04 RR4 24 Purple 45 SR4 25 Gray 24 IC4 25 Purple 22 SG4 26 Blue 10 RD5 26 Pink 31 SD5 27 Orange 28 CS5 27 Pink 07 RS5 28 Green 29 DMS 28 Pink 30 TR5 29 Brown 09 RRS 29 Pink 27 SRS 30 Gray 06 IC5 30 Pink 08 SG6 Reference...

Page 44: ...s manual are identified as seen from the computerendofthe circuit Each of the six channels of the multiplexer controls and monitors seven modem control lines Various designations for the two data lines the sig nal ground and these control lines are correlated in Table 6 1 Table 6 3 lists the pin assignments for the RS 232 C cable ports on the junction panel All six ports are wired the same way int...

Page 45: ...ems to the multiplexer are ordered separately through your Hewlett Packard Sales and Support Office Table 6 4 Special Cables for Connection to Terminals HP13242M HP13242N HP13242Y HP92219G Sm 25 pin male to 25 pin male all conductors wired end to end Sm 25 pin male to 25 pin male 11 19 switched other conductors wired end to end Sm 25 pin male to 25 pin male conductors 1 3 7 wired end to end 3 8m 2...

Page 46: ...Table 6 5 Suggested Cable for Modem Installations HP92219Q 5 m 25 pin male to 25 pin male conductors wired as follows Computer End Data Set End Pin Number Pin Number 1 1 3 3 2 4 8 6 20 7 7 8 4 9 22 20 6 22 5 13 13 ...

Page 47: ...t 2 Microprocessor Circuit Sheet 3 Memory Interface Circuit Sheet 4 Serial Communications Controller Sheet 5 Frontplane Interface Circuit Figure 7 2 Locator diagram for 62 pin connector Figure 7 3 Locator diagram for 25 pin connector on RS 232 C panel Figure 7 4 Locator diagram for components of PCA 2714O 60001 Diagrams 7 1 ...

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Page 51: ...1 U95 till Uti III I tlU 1 IU III un lilt I un 1 111 1 IIC1 I uua I UI 11 ll1n It 111 1 1 1 11 lut lin 1 11 17 1 It 11It 17 1 til UtI 1 11 1111 J 11 J 11 j I IIIIUI I IUII u 11 U97 IIII I u 11ft 1111 lin n l ___ 1 II 1 1 1I1 j 111 1 nu Tn U II 1ICI ClIl II 1 11 II 1111 In II It It II U t llll It I u 1 PCU LII II II n PI IIII U n IIIJI 11 r iiHi I II II C II III II n II II 11 11 In I n 1 111 n It U...

Page 52: ...IU U r l1 rr1t 1tJ I 1 I ffi III I I 4UU III n U93 I 7 3321 C 2c 2 If_ 1t ___ C 2 5 U ___ nnillt C 2 4 If_ unull C23 If 1c t l4 III luuuuj 11 I t a II II 11 f t J Hi f la 4 r 1 net r ue J2 U204 tm 3322 r 1 ICt r _1 tC J2 II r t t III p I II U205 1111 3322 H t j III r t T If LT f p I II II 441 56 l tJ t5 U9FY C I 3 _1 cc C I 6 H _1 IIU C Ic 5 1 1f_ _1unUll ____ C I __4 _1 f_ I n lIl l nll t I I lr ...

Page 53: ...8 0 17 060 039 018 061 040 019 062 041 020 042 021 Figure 7 2 Locator Diagram for 62 pin Connector on RS 232 C Panel See Table 6 3 for further information regarding the pin assignment of the 62 pin connector GND 1 0 14 RD 2 0 TD 3 0 15 0 16 0 RR 4 0 0 17 RR 5 0 0 18 TR 6 0 SG 0 19 0 20 DM 0 RS 8 0 0 2 1 IC 9 0 0 22 CS 10 0 23 SR 0 11 0 24 12 0 0 0 25 13 0 Figure 7 3 Port Pin Assignments Diagrams 7...

Page 54: ...b 10 iU38 I U42 IU48 1 II I IY1L J TI CBD IUS8 If l ao lUG8 OL L3 QiJ IU78 I 88 L3 ill I J 98 I lus7 1L 108 lU97 1U95 1U9 1093 1U92 IU91 IUZ08 IU207 IU206 IU205 IU2 IU203 IU202 IU201 J2 Figure 7 4 Component Location Diagram 7 14 Diagrams ...

Page 55: ...es 1 1 Counter Timer Parallel I O 3 6 D Data Communications Equipment 3 2 data lines 3 2 Data Terminal Equipment 3 2 data transfer 3 3 DCE 3 2 DTE 3 2 E earth 6 6 electrical safety ground 6 6 EPROM 1 7 3 5 F field replaceable unit 1 5 1 7 frontplane circuits 3 3 FRU 1 5 1 7 G GO N0 GO 4 1 grommet 2 4 H handshaking 3 3 I identification ofthe PCA 1 6 indicator ring 3 2 information transmission rate ...

Page 56: ...mponent 5 1 Parts replaceable 5 1 peripherals 1 1 power available 2 2 preventive maintenance 1 7 protocol settings 4 2 R RAM 3 5 Replaceable parts 5 1 RFI door 4 1 RFI grounding clip 2 4 ring indicator 3 2 RS 232 C Junction Pane 1 5 3 1 S SCC 3 6 selftest 1 7 EPROM controlled 4 2 self test 4 1 GO NO GO 4 1 send sign 3 2 Serial Communications Controllers 3 6 settings protoco 4 2 signal send 3 2 sub...

Page 57: ...T telephone company 1 1 terminals 4 2 test hood 4 1 total power supplied 2 2 transorbs 3 2 Z Z SO microprocessor 3 3 3 5 Z SO to SCC Command Interface 3 5 Index 3 ...

Page 58: ...e margin indicates new or changed text material The change bar is not used for typographical or editorial changes that do not affect the content of the text TO UPDATE YOUR MANUAL identify the latest update if any already contained in your manual by referring to the printing history page Incorporate only the updates from this packet not already included in your manual Following the instructions on ...

Page 59: ...UPDATE 1 U 2 TECHNICAL MANUAL UPDATE 27140 90007 Note that indicates a changed page DESCRIPTION A Replace the following pages with pages supplied Title ii 3 4 1 7 1 8 ...

Page 60: ...wers under Comments below and use additional pages if necessary Is this manual technically accurate Yes Are the concepts and wording easy to understand Yes Is the format of the manual convenient in size arrangement and readability Yes Comments This form requires no postage ifmailed in the U S For locations outside the U S your local company repre sentative will ensure that your comments are forwar...

Page 61: ...6 Roseville California Postage will be paid by addressee Publications Manager Hewlett Packard Company Roseville Networks Division 8000 Foothills Boulevard Roseville California 95678 6598 IIIIII No Postage Necessary If Mailed in the United States Fold Fold ...

Page 62: ...Manual Part Number 27140 90007 Printed in U S A June 1988 Edition 1 E0688 FJ HEWLETT a e PACKARD ...