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Radio Shack Modem 4P, Руководство по эксплуатации

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Содержание Modem 4P

Страница 1: ...Custom Maiw aaurfld in USA By RADIO SHAClC A DivlMm ol TANDY CORPORATION ...

Страница 2: ...Modem 4P Operation Manual ...

Страница 3: ...m 4P Ope cetlon Manual S 1903 Tandy Corporation Fort Worth Texas 76102 USA All Right Reserved RftprorliintirKi nr urb without fwpmas written permission from Tandy Corporation Of any portion ol this manual is prohibited While reasonable etforta have been taker in the preparation of this manual to assure ns accuracy Tandy Cwpcailon asfuriMK no habafty iseurting From any errors or omia ior B fn this ...

Страница 4: ...4P 3 Installing the Modem 4P 3 Connecting the Telephone to the Modem 4P 4 3 Programming the Modem 4P 9 4 Troubleshooting and Maintenance 17 Specifications 19 Appendix A How Quickly Does Your Modem Dial 21 Appendix B Modem 4P Programming Commands 23 Appendix C Technical Information 29 ...

Страница 5: ......

Страница 6: ...dem flP is fully controllod by Iho RS 232C port and aerial data ia passed from the computer to the modem Commands are used to program the Modem 4P via the keyboard You can program the Modem for Manual Originate or Manual Answer modes which means that if you are contacting a remote computer in Manual Originate mode you will manually dial the telephone number and when you are in Manual Answer mode y...

Страница 7: ...Um Modem 4P has these features Easy installation Fully programmable from the keyboard Auto Dial and Auto Answer capability This manual will Give a description of the Modem 4P Snow you how to program the Modern 4P iV ...

Страница 8: ... Output Channel Modular to Tefephone Outlet Jack Connect one end of a iiiudulai tyutt cable to this Jack Connect the other end of the modular type cable to the connector labeled TO WALL Connect the other end to a modular telephone outlet Modem to Tetepbone Jack Connect the modular cable from the telephone to the Jack labeled TO PHONE Note The TO WALL and TO PHONE Jacks are interchangeable ...

Страница 9: ...jHunifc Figure 1 Modem 4P ...

Страница 10: ...2 Setting Up the Modem 4P Figure 2 Installing the Modem 4P ...

Страница 11: ...onnect the RS 232C cable to the Model 4P s RS 232 output channel C onnecting the Telephone to the Modem 4P The way you connect your Modem 4P depends on how your telephone is connected to the wall The following figures illustrate these connections It your telephone has the older style four prong connection use an adapter 279 360 to connect tt to your modem II your telephone is wired directly to the...

Страница 12: ...Figure 3 Modular Connector ...

Страница 13: ...Figure 4 Wall Connector ...

Страница 14: ...ack Catalog Number 43 270 271 a hardware modification to the Modem 4R or both If you use a Multi Line Adapter only the HOLD Button on an extension phone cart interfere with communication To avoid this problem have a qualified Radio Shack Service Technician modify The Modem 4R For information about other Adapters which may be used contact your Radio Shack store ...

Страница 15: ......

Страница 16: ...ply by using the Programming Commands thai let you communicate with the Modem The following criteria must be met before computer to computer communication can occur Both computers must have ihe same communications protocol x Baud Rate 0 300 x Word Length x Parity x Number of Stop Bits See your Computer owners manual to find out how to set communication protocol One Modem must be in the ORIGinate M...

Страница 17: ... such as Videotex You can also send or receive data trom another computer while you re not at your Computer keyboard Just write a BASIC or macnine language program and use the cumnands described in this manual See Appendix B to program your Modem to dial a number or answer the phone unattended By programming your Modem to download daily receipts to another computer at 12 00 midnight foe example yo...

Страница 18: ...ent contantt 4f omfsm memory to dm computer Toggles the rVanualAjioma ic sw cn Switcties tr B modem totte Originate made P Inserts j llireB seuurid pause in dialing sequence Q Puts modem into LOCal Tesl Mode R Rotary dialing def aufl value S Stow Rotary or Tone dialing 10 pps default value T Tend dig ing 0 d gits per second I X Executes current program dials phone number in memory goes into Sell T...

Страница 19: ... more thorough explanation of these commands refer to Appendix B Tn sftfl thfi current modem setting use the List Command by typing The ecr n shows M0DE TYPE O F CD Y TEST N NUMB RATERS EXlT 14 Upon power up the modem will be set in the Manual Originate mode Forced Carrier Dated ON no specified telephone number slow dialingi speed and communications exit HHPD Each setting can be changed ind ivi du...

Страница 20: ...r Mode When you are calling another computer you will need to place the Modem in the Originate setting It the MODE option is A and the TYPE option is 0 the Modem 4P will Auto Dial the number you have saved in its memory See NUMB When you will be receiving a call you use the Answer option A It the MODE option is A and the TYPE oplion is A the Modern will wait tor the telephone to ring then answer t...

Страница 21: ...in Type CD to tell the Modem to suppry the computer wHh an asserted Carrier Detect ONLY when the Modem is in communications over the telephone lines F CD N will display when the List command is used Type if to tell the modem lo supply the computer with an asserted Carrier Detect even though you are NOT in communications over the telephone lines TEST N This lets you turn the Self Test Mode ON or OF...

Страница 22: ... Ihe telephone number you can also specify whether you are using a Tone telephone T or a Rotary telephone R and any pauses during dialing P For example the sequence DT9P1 234567 tells the modem thai you are using a Tone telephone to dial 9 pause 2 seconds and then dial the number 1234567 RATE 5 You can select either Fast or Slow dialing The modem will auto dial a telephone number tf previously ent...

Страница 23: ... illustrates a program that would place the Modem in Auto Originate mode Ateo Forced Carrier Detect io Oft The Modem is to Dial the following number using Tone at Fast Speed then Dial 9 pause for three seconds and then dial the rest of the number To reiterate to execute the commands you programmed press 16 ...

Страница 24: ...ion is clean and noise free No one is talking on me telephone tine The phone and all extensions are on the hook The baud rate of the terminals is equal to 300 H you still can t tocate the source of your problem run the LOCal test Enrol Messages Your Modem has received a character which isn t in proper order or which it doesn t understand 17 ...

Страница 25: ...Notes ...

Страница 26: ...ity Baud Rate Operating Temperature Electrical Requirements A Answer Mark 1270 Hz Space 1070 Hz B Originate Mark 2225 Hz Space 2025 Hz A Answer Mark 2225 Hz Space 2025 Hz B Originate Mark 1270 Hz Space 1070 Hz 13dBm 1 dB 40dBm 0 300 55 F 65 F 03 C 29 C 5 VDC a ma 12VDC g ma 12 VDC a1 ma 19 ...

Страница 27: ...Notes ...

Страница 28: ...n the Automatic Originate Mode The information following shows the speeds at which you can control dialing S Slow In Slow speed the Modern will Pulse dial at 10 pulses per second and will Tone dial at 5 characters per second Either Pulse or Tone dial is significantly faster than you could dial a telephone manually The Slow dialing speeds are shown in Table 2 Dialing Using Slow Speed Pulse Bi ak Ti...

Страница 29: ... 10 characters per second The following table illustrates the capacities of Fast dialing The Fast dialinq speeds are shown in Table 3 Dialing Using Fast Speed Pulse Break Time Make Time Inlra Digit Time 31 5mSEC 18 5 mSEC 390 0 mSEC lone Tone On Time Tone Off Time 50 0 mSEC 50 9 mSEC Table 3 22 ...

Страница 30: ...nitial power up you will need to precede any command with an If used while the modem is wailing for a telephone call waiting for the phone to ring the terminates Ihe Answer mode and will not be echoed but the TYPE option will be toggled to Manual This ensures that the Modsm is not accidentally tnlri In go back In the WAIT FOR CALL mode If the command is used white the Modem is dialing in Autoj Ori...

Страница 31: ... ASCII character may be substituted following the For example to change the Abort code from OTDD to 33HDHJ after doing a List command you would type The Modem will watch for transmitter activity for two seconds after the Abort code is sent If there is no activity during that two second period the computer will abort any On Line activity in progress If there is keyboard activity within that two sec...

Страница 32: ... up to 25 digits of data at one time Only those codes listed will be saved or used The following codes are valid Dialing instructions 0 9 Telephone number P P inserts a three second pause in the dialing sequence This command is especially useful when you re dialing from a business system that requires an outside access code For longer pauses use more than one P There is no limit as to tho number o...

Страница 33: ...881234 usNig Tone signalling The dashes and parentheses are ignored by the modern when dialing bul are available Tor your use to make tne sequence easier to read The IMS code is simply an editing feature If you are typing a number and make an error press fflKSP to delete the last character typed If you press JUtSrD immediately after selecting the D command a mark will appear indicating an error co...

Страница 34: ...ling speed to 10 characters per second G Toggle Forced Carrier Defect The G command turns the Forced Carrier Delect ON and OFF It is defaulted to turn ON When ON the Modem will present a false carrier command to the computer If the G command is issued from a power on condition Carrier Detect will turn OFF it will stay off unless a true carrier is asserted to the modem due to On Line statue lb choc...

Страница 35: ...sing the Q command the Modem will not go On Line if an X command is sent Instead the internal circuits will be adjusted to allow the Modem to talk to itself Always use the List command to check the status of the Self Test mode S Slow Rotary or Tone Dialing Use this command to program the Modem to Ftotary or Tone dial al 10 pulses per second X Execute current program Send an X to immediately execut...

Страница 36: ...irJi is sent over the telephone line and not the false carrier that may bo generated by the modem card If this carrier is removed for longer than 300 mSeconos 3 seconds Monitor Mode is exited If the carrier interruption is less than 300 mSeconds the loss of carrier is ignored Manual Abort Entry If you send a fCTHTllTi 14 HFX nr another character that was programmed with the J ey and do not send an...

Страница 37: ...ing the phone line the Modem will issue a special code through the RS 232 connection An ACK 06 HEX is sent just after the modem has finished dialing the telephone number In applications where the Modem is used as a directory dialer not as a communications interlace this code can flag special software The software can then take the Modem On Hook ao that you may communicate with the dialed number us...

Страница 38: ...Lir te Mucfc This sequence is NAK line feed carriage return 15 OA OD HEX This sequence is valid in all operating modes Auto Originate witn Mo Number To Dial Detect If you have failed to program at least one valid character into the Dialer memory the Modem will abort the On Llne mode two seconds after the X command is issued If there is a character or Space programmed into the dialer memory by acci...

Страница 39: ...dialed the Modem will hang up after not legating a irue carrier The Manual Originate mode is useful when receiving computer fites such as programs from a remote computer using communications software 2 At power up to change parameters to Auto Dial 30 that the telephone number 1234567 will automatically be dialed press D for the Ust command Then type the following MD1234567X 3 With the system fulry...

Страница 40: ...ne number as indicated in 4 above type to turn Oft WAITING FOR RINU OX 6 After disconnect from 5 go the Manual Answer by typing MAX 7 After disconnect from 6 goto Manual Originate by typing OX 8 After disconnect from 7 go to Auto Answer by typing MAX 33 ...

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