Racal-Vadic 4850PA User Manual Download

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Summary of Contents for 4850PA

Page 1: ...A Racal Vadic Modem Model 4850PA User s Guide Second Edition First Printing June 26 1986 Publication No 18 008 224...

Page 2: ...DEFECTIVE PARI S UPON THE TERMS ABOVE DESCRIBED OR AT RACAL VADIC S OPTION REFUND OF THE PURCHASE PRICE RACAL VADIC SHALL NOT BE LIABLE FOR CONTINGENT OR CONSEQUENTIAL DAMAGES TO PEBSONS OR PROPERTY...

Page 3: ..._ _ _ Please address comments about this manual to Racal Vadic Corporate Communications 1525 McCarthy Boulevard Milpitas CA 95035 C 1986 by Racal Vadic iii...

Page 4: ...Line 2 3 Connection to a Leased Line 2 4 OPBRATIOR MODES OF OPERATION 3 l GENERAL MODEM USE 3 2 Data Link Parameters 3 2 Dial 3 2 Connect 3 2 Data Transfer 3 3 MANUAL OPERATION 3 3 Summary of the Key...

Page 5: ...S l WHAT TO DO WHEN THE MOOEM WON T RESPOND 5 2 Check the Installation 5 2 Check Communications Software Settings 5 2 TFS I S 5 3 Idle Mode Self Test 5 3 Analog Loopback 5 4 Analog Loopback Self Test...

Page 6: ...s S 3 Analog Loopback Test 5 4 Analog Loopback EIA Signa1s 5 S Diagram of the ALB Se1f Test 5 6 ALB Self Test EIA Signa1s S 6 Diagram of the End to End Self Test S 7 End to End Self Test EIA 9igna1s 5...

Page 7: ...ntinue use until the problem has been corrected l 3 Where such action is reasonably required in the operation of its business the telephone company may make changes in its communication facilities equ...

Page 8: ...e to radio or television reception whioh can be determined by turning the equipment on and off try to oorrect the interference by one or more of the following measures o reorient the receiving antenna...

Page 9: ...bps fall back mode o Automatic answer and originate modes o Manual originate and answer modes o Small size modem fits under a standard desk telephones o 23 functions from 12 keys on the front panel o...

Page 10: ...es o Number storage for up to 15 phone numbers of 60 digits each from front panel only o Dialing from the front panel keypad o One button redial o Tandem dialing in all dialing modes o Automatic selec...

Page 11: ...m and allows you to set up without problems IRSPBC J AND DIVEIft ORY lBB IIlDBII Racal Vadic packs four items into the modem box Make sure you have all components o modem o manual o power adapter o te...

Page 12: ...train on the cables 2 To connect to a computer terminal that has no 801 dialing port link the modem to the computer terminal with a standard RS 232 C cable 25 pins in each connector with straight thro...

Page 13: ...led Ram SBRVICB OPlI JS CoImection to a Permissive Phone Line The 4850PA modem is shipped from Racal Vadic ready for connection to a permissive phone line Simply plug the modem into the telephone wall...

Page 14: ...odem CcDDectlOil o a Leased Line You can lease private phone lines directly from the phone company connect the modem to the leased line with the phone cable provided with the modem Adapt the 4850PA to...

Page 15: ...e transmission level S Find strap W3 Set the plastic jumper so that it connects both posts together This changes the line connection 6 Find the site for strap A Solder a jumper wire across the two hol...

Page 16: ......

Page 17: ...n data mode HOLC SOLC Dialing Mode This mode occurs whenever the DTE interacts with the modem using the HOLe SOLe command set RS 366 Dialing Mode This mode occurs whenever Call Request is present on t...

Page 18: ...econd step is to call a remote system There are four ways to place this call First you could manually originate that is you can connect a telephone directly to the modem and dial manually then connect...

Page 19: ...BRATIOR S ry of the Keyboard Redial l When in idle mode this key causes the 4850PA to redial the last number auto dialed When in numeric mode this key enters the number 1 Dial 2 In idle mode this key...

Page 20: ...he dialing string In all other modes this key resets all modem functions though it does not affect the options and numbers stored in nonvolatile memory Data 6 From idle mode this key takes the modem o...

Page 21: ...dle mode this key allows a telephone number to be stored in a sPecified address This key enters the number 9 in numeric mode Option O In idle mode this key allows the modem configuration to be changed...

Page 22: ...the top of the display is one row of labels representing the interface signals When an asterisk apPears below a label the signal represented by that label is present in the cable RS 232 C Interface S...

Page 23: ...ted a ring or ringback signal Modem has detected answer tone Modem is connected to the telephone line Modem failed to connect Modem requests a telephone number to be entered either to dial or to be st...

Page 24: ...NUMBER 3 Press i 1 1 1 ENTER to store the number LCD indicates IDLE The number 555 1212 is now stored in address 3 Dial a Stored Humber 1 Press DIAL LCD indicates ADDRESS 2 Press 2 ENTER to dial the...

Page 25: ...the display will be as listed below DIALING RINGING ANS TONE FALLBACK ONLINE Olal Bnteced Raber 1 Press LCD indicates ADDRESS 2 Press ENTER LCD indicates NUMBER 3 Press 1 LCD indicates 5551212 as the...

Page 26: ...til the last digit is displayed 5551212 The LCD then displays call progress as it occurs below Successful call DIALING RINGING ANS TONE ON LINE or Failed call FAILED IDLE After the call has been succe...

Page 27: ...e 2 LCD indicates OPTION 4 If no more options are to be changed press ENTER The LCD will indicate IDLE If any of the programmable options are changed to a nonstandard setting option 1 the Standard Opt...

Page 28: ...displaying the diagnostic indicators approximately two seconds after ON LINE is issued llanual Answer Operation 1 Establish voice communciation with the operator of the remote modem 2 Press the ANSWER...

Page 29: ...ble with HIGH LEVEL DATA LINK CONTROL HOLe and IBM s Synchronous Data Link Control SOLe The protocol uses a nontransparent ASCII or EBCDIC code set to implement ROLC or IBM SOLC in 3270 format The 485...

Page 30: ...mmand set for the Bisync dialer includes the ability to configure the 4850PA s programmable options See Appendix E for more detail RS 366 Dialing 1 To initiate the RS 366 dialing sequence the dialing...

Page 31: ...dialing port will not raise Digit Present The modem continues to wait until answer tone is detected 6 Once answer tone is detected the 4850PA brings up Distant Station Connected and stops the Abandon...

Page 32: ...c indicators are selected the diagnostic indicators show the condition of the RS 366 signals To identify which signal the modem is displaying indicates an RS 366 signal indicates an RS 232 C signal I...

Page 33: ...9 Reserved 1 r 10 Failed Call Timer 60 seconds 1 11 Reserved 1 12 Reserved 1 13 Speed Select 4800 bps 3 14 Busy Out with DTR LOW Disabled 1 15 NRZI Enabled 1 16 Satellite Option Disabled 1 17 Clear T...

Page 34: ...Permissive W2 A Line Connection Switched Network W3 Leased Line W3 Bypass the Off Switched Network A Hook Relay Leased Line A Multiline Enabled B Indication Disabled B Protective Ground Tied C to Sig...

Page 35: ...OJHeader t B Strap B Position B A Position W1 if CIr W3 0 Q I 1Mftt fffM ii 1 I Dm I S W D IJ r it I I _ L I I a iB I e ova JI I 0a I 1 I li I I W5 Pigue 1 Location of Straps Options 4 3 Preliminary...

Page 36: ...ption controls the DSR signal to the EIA interface When Computer System Interface is selected DSR will pulse low for four seconds when the modem returns on hook All other times DSR remains HIGH to all...

Page 37: ...s the dial tone detection circuitry and causes the modem to delay five seconds before dialing to allow access to telephone lines with nonstandard dial tones This option functions in all dial modes 1 D...

Page 38: ...eed key 1 2400 bps 2 Not used 3 4800 bps 14 Busy Out with DTR LOW When enabled this option causes the modem to present a busy condition to the telephone network whenever DTR Pin 20 is LOW a 4 second e...

Page 39: ...ised This delay ensures that the remote receiver is ready to accept data I 50 ms 2 150 rns 18 Loc 1 Copy When enabled this option causes the modem to reflect back to the DTE all data being transmitted...

Page 40: ...option selects whether the modem will provide the transmit clock on pin 15 of the EIA internal or if the DTE will provide the transmit clock on EIA pin 24 external 1 Internal 2 External 22 Force DTR...

Page 41: ...6 Issue ACR on Local Modem 8usy This option is only accessible from the front panel When this option is enabled CR will be issued if a call is attempted while the local modem is off hook 1 Enabled 2 D...

Page 42: ...e changed with a 28 digit b8tch option string with the batch dialing string no option settings may be left out Even those option numbers which are not used must be filled in the batch option string St...

Page 43: ...a trouble shooting procedure and explanations of all the tests UOUBLB smorIRG There are many parts to a data communications link especially when you consider the number of signals in the RS 232 C and...

Page 44: ...ck the manual that came with your equipment 3 Make sure that the modem and computer or terminal are plugged into the power source The LCD will display RIDLER when the modem has power Check 0 _unlcatlo...

Page 45: ...Ue Mode Self lest The 4850PA runs this self test continuously whenever it is in idle mode the display indicates nIDLE The modem conducts the self test automatically The test ends when the modem leaves...

Page 46: ...tween the 4850PA and the computer Basically the idea is to send characters through the modem and compare them to what was received During this test the modem remains isolated from the phone line To th...

Page 47: ...e This puts the modem into analog loopback where signals sent to the modem from the computer terminal are looPed back In this state the modem display shows ALB 3 Type a block of capital Us or any char...

Page 48: ...rn scrambled MARK instead of data input from the DTE to verify the operation of the modem If a failure is detected in the internal test pattern the modem displays ST ERROR on the LCD Before entering t...

Page 49: ...ation of both modems in one direction only one modem sends the other receives and the phone line between them To thoroughly test both modems conduct this test twice once transmitting from the local mo...

Page 50: ...te modem to receive the self test pattern Remote 1 o TXO AXO HS CTS OSA OTA AI CXA SELFTEST Failed Test If the test patterns do not compare at the remote modem that modem displays the error message 2...

Page 51: ...carries RS 366 signals between an 801 dialing port and the modem The computer terminal and dialer also share some signals through the Y cable The Y cable connects to the dialing port and the computer...

Page 52: ...R 2 13 Data Line Occupied DLO 22 14 Present Next Digit PND 5 15 Serial Transmit Clock SCT 15 16 Distant Station Connected OSC 13 17 Serial Receive Clock SCR 17 18 Binary Digit 1 NS1 14 19 Binary Digit...

Page 53: ...S 232 1B NB1 P3 19 NB2 AS 366 1 PG 20 OTA 2 TXD 21 ACA 1 PG 1 3 AXD I 22 AI I 2 DPR 4 ATS I 23 NB4 3 ACR 5 CTS f 24 SCTE U 4 CRO 6 DSR l 25 CRO 5 PNO 7 SG 6 PW1 8 CXR 7 SG 9 V I 13 DSC 10 V 14 NB1 15...

Page 54: ...CB 6 OSR CC 7 SG AB 8 CXR ccO 9 V P 10 v P 15 SCT DB 17 SCR DO 20 DTR CD 22 RI CE 24 SCTE DA Frame Ground Transmit Data Receive Data Request To Send Clear To Send Data Set Ready Signal Ground CF Carr...

Page 55: ...428 438 or 458 468 475 data jacks permissive connection only Items a and b above are the permissive connections defined in Part 68 of the FCC Rules and transmit level is fixed at 10 0 dBm 1 0 dB Progr...

Page 56: ...ving all MARK Switched Network OFF by ON by 43 dBm Hysteresis Leased Line 48 dBm 38 dBm 33 dBm 2 dB minimum carrier Detect Delay CXR will be raised 52 ma 3 ms after energy is detected CXR will drop 8...

Page 57: ...y 5 to 90 without condensation Pll SICAL CBARACDRISTICS Height Width Length Weight 3 8 cm 1 5 in 15 3 cm 6 0 in 26 7 em 10 5 in 1 86 kg 4 1b 2 5 oz P01iBR RBQOIRBMBN IS 117 volts ac 10 57 to 63 hertz...

Page 58: ...jumper across W3 No jumper across A Dynamic Range Transmit Level 10 to 43 dBm o to 12 dBm Wl set to position B Remove jumper W2 Programmable Transmit Level Bypass the Off Hook Relay Leased line connec...

Page 59: ...NLINE VALID Pigue C l Saple Dial Bxcbange APPIRDIX C CDiU WBk fBIIIIIIAI tmDBM I M IR BDLC SDLC IKJDB MBSSAGB fOBIIA S Commands and call progress messages used in the HOLC SOLC dialer are coded in non...

Page 60: ...E FF 13 D phone i CRl CR2 7E 7E Call Progress Messages Dialing 7E 7E 7E 7E FF 13 D CR1 CR2 7E 7E Ringing 7E 7E 7E 7E FF 13 R CRl CR2 7E 78 Answer Tone 7E 7E 7E 7E FF 13 A CRl CR2 7E 7E On Line 7E 7E 7...

Page 61: ...DC S 0 T d t 0 11 0 i1 5 ENQ NAK t 5 E U I I U I 10 1 1 0 I 6 lACK ISYN 6 I F i V I t I I I I v I I 0 i1 jl 1 I 7 ISEL lETS I 7 i G I w I g W i 1 10 o iO g Iss CANl I I H I X h I I I i I iO 0 I 1 I 9...

Page 62: ...I I b I k is 1 B K S 2 I I 0011 J ETX 11C I c II C L T J t j 0100 d mju i 0 M U 4 i I 0101 5 PT Nt I e n jv I E N V 5 0110 6 E1 8 I I f o jw F 0 W 6 I 0111 7 I ESC Ear j jg p Ix I c p X 1 I I 1000 8...

Page 63: ...the same call progress or protocol message as long as it keeps receiving INVALID from the host There is no counter or timer limit 6 Once the modem sends the nDIALING message to the computer terminal...

Page 64: ......

Page 65: ...ACK1 EDT 4850PA 22 Pigure 0 1 Suple Dial Bxcbange APPIBDIX D CDiPU dk l BBIIIlIAL ImDBII DflBRACrICB IH BISDIC II OB IIBSSAGB IOBIIA IS Commands and call progress messages used in the Bisync dialer a...

Page 66: ...inging SYN SYN SYN SYN STX R ETB CRel6 PAD nswer Tone sm SYN 8YN SYN STX A E rB CRCl6 PAD n Line SYN SYN SYN SYN STX L BTB CRel6 PAD usy SYN SYN SYN SYN STX B ETB CRel6 PAD ailed Call 8YN SYN SYN SYN...

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