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E. Hewlett-Packard Protocols

154001UA

E-1

E. Hewlett-Packard Protocol

E. Hewlett-Packard Protocol

E. Hewlett-Packard Protocol

E. Hewlett-Packard Protocol

E. Hewlett-Packard Protocol

In the ENQ/ACK protocol, the host sends block of asynchronous data followed

by an ASCII ENQ character. Transmission of the next block is withheld until

the receiving end sends back the ASCII ACK signal. This signifies that the

receiving end has processed the data block and is ready to receive another. The

multiplexer is programmed during this option to issue ACKs itself, eliminating

the delay required for each ACK to separately propagate through the remote

connection. Up to five blocks can be acknowledged by the multiplexer at any

time. Simultaneously at the remote end, the multiplexer is watching for ACKs

and converting then to internal control codes to send to the local end. The

result is a 5 block window, allowing ENQ-blocks and ACKs to be overlapped,

making transmission more efficient. Both ends of the connection must be

configured HPENQ for this to work.

Figure E-1 gives a sequence chart of the protocol assistance.

ENQ/ACK

ENQ/ACK

ENQ/ACK

ENQ/ACK

ENQ/ACK
PROTOCOL

PROTOCOL

PROTOCOL

PROTOCOL

PROTOCOL

Figure E-1. HPENQ Protocol Assistance

2031E-1

Local

3028

Remote

3028

Terminal

HPENQ

(DB1)

(DB2)

(DB5)

ENQ 1

ENQ 2

ENQ 5

ACK

1 (1

)

ACK

2 (1

)

ACK

(1)

(5)

(DB1)

(DB2)

ENQ 1 (7)

ACK

1

ENQ 2 (7)

(3)

ACK'

(6)

(4)

(3)

ENQ' (2)

0

1

2

5

Unconfirmed

ACKs

ENQ'

ETC.

ENQ'

Remote

Buffered

Ti

Terminal

Processing

Time
( Ti)

1)
2)
3)
4)
5)
6)
7)

Parity of ACK according to local system option.
ENQ' DCX con trol code representing ASCII ENQ.
HP X-OFF state entered.
HP X-ON state entered.
5 Unconfirmed ACK's, therefore no response to CPU's ACK.
ACK' DCX control code representing ASCII ACK.
Parity of ENQ according o remote system option.

NOTE:

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Содержание 3028 Turbo

Страница 1: ...154001UA Part 07M3028 A STATISTICAL MULTIPLEXER 3028 Turbo CTS 2031TURBO INSTALLATION AND OPERATIONS MANUAL B AnISO 9001 CertifiedCompany Copyright 2000 Patton Electronics Co All Rights Reserved May 31 2000 ...

Страница 2: ...Doc 154001UA Part 07M3028 A STATISTICAL MULTIPLEXER 3028 Turbo CTS 2031TURBO INSTALLATION AND OPERATIONS MANUAL B AnISO 9001 CertifiedCompany Copyright 2000 Patton Electronics Co All Rights Reserved ...

Страница 3: ...ton or authorized by Patton in writing All warranty and non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authoriza tion number on the outside of the shipping container This number may be ob tained from Patton Electronics Technical Services at Tel 301 975 1007 email support patton com or Web http www patton com NOTE Pac...

Страница 4: ...in a commercial installation However there is no guarantee that interference will not occur in a particular installation If the Patton MSDs do cause interference to radio or television reception which can be determined by disconnecting the cables the user is encouraged to try to correct the interference by one or more of the following measures moving the computing equipment away from the receiver ...

Страница 5: ...Panel Operation 2 3 Terminal Operation 2 5 Modes of Operation 2 5 StandbyMode Logoff 2 6 MonitorMode 2 6 MemoryCapability 2 10 CommandMode 2 10 Resetting The Multiplexer 2 75 Appendices A MultiplexerCommandModeSummary A 1 B Technical Specifications B 1 C ASCII Character Codes C 1 D Multiplexer Parity Options D 1 E Hewlett PackardProtocol E 1 F Tandem T Pause and Wang Flow Control Methods F 1 G Flo...

Страница 6: ...king facilities through a DCX 825 871 The SDLC HDLC protocol is a standard feature that supports the bit oriented synchronous protocols 1 1 1 1 1 Introduction and Setup Introduction and Setup Introduction and Setup Introduction and Setup Introduction and Setup OVERVIEW OVERVIEW OVERVIEW OVERVIEW OVERVIEW Figure 1 1 Multiplexer Product Application Examples Figure 1 1 Multiplexer Product Application...

Страница 7: ... things as break propagation EIA signal propagation and autobaud speeds The control messages are transparent to the user In addition any of the EIA interface outputs can be forced high or low through the user interface Multiplexer configuration and operation monitoring is accomplished in a variety of ways An ASCII asynchronous terminal can be attached to the supervisory port on the back panel or t...

Страница 8: ...ed for supervisor functions such as configuring channel parameters or monitoring status and statistics A shielded Male to Female straight through cable is supplied to connect the multiplexer Composite Port to an external modem This term refers to the use of the 3028 Turbo CTS 2031 Turbo multiplexer in direct communications with another 3028 Turbo CTS 2031 Turbo multiplexer This application involve...

Страница 9: ... used at the factory For the United States the switch is set to 115V Plug the female end of the power cable into the receptacle on the rear panel and connect the other end to the power source The unit is operational when the POWER LED lights 5 After the 3028 Turbo CTS 2031 Turbo has been attached to the proper power source it performs a series of tests to insure the integrity of the system compone...

Страница 10: ...to the indicated chap ters Table 1 1 Supervisory Port Defaults Table 1 1 Supervisory Port Defaults Table 1 1 Supervisory Port Defaults Table 1 1 Supervisory Port Defaults Table 1 1 Supervisory Port Defaults COMMAND PARAMETER DEFAULT SETTING SUPERVISORY PARAMETERS SPEED 9600 DATA BITS 8 STOP BITS 1 PARITY NONE SPACE RV FL CTL NONE Reverse Flow Control MUL MUL MUL MUL MULTIPLEXER TIPLEXER TIPLEXER T...

Страница 11: ...XC 17 RTS 4 CTS 5 DCD 8 DTR 20 and XTXC 24 The composite link is synchronous full duplex and point to point Front panel configuration allows the 3028 Turbo CTS 2031 Turbo to provide clocking on the XTXC signal lead as well as take clocking from the RXC and TXC signal leads If DCD becomes inactive the 3028 Turbo CTS 2031 Turbo assumes the link is down RTS will be provided by the 3028 Turbo CTS 2031...

Страница 12: ... 20 5 22 8 6 2 3 7 Multiplexer Multiplexer DTE DTE Pin to Pin Cable Pin Pin to Pin Cable Pin Standard Terminal Host Connection Tail Circuit Application DRS BO RTS DTR CTS RI DCD DSR TXD RXD GND Host CTS RI DCD DSR DRS BO RTS DTR RXD TXD GND 23 25 4 20 5 22 8 6 2 3 7 5 22 8 6 23 25 4 20 3 2 7 23 25 4 20 5 22 8 6 2 3 7 Multiplexer Multiplexer Tail Circuit Modem DCE DTE Pin to Pin Cable Crossover Cab...

Страница 13: ...SUPERVISORY Y Y Y Y ALARM SIGNALS ALARM SIGNALS ALARM SIGNALS ALARM SIGNALS ALARM SIGNALS The 3028 Turbo CTS 2031 Turbo provides a Crypto Reset signal as an RS 232 C signal indication on the Composite port The positive signal for Crypto Reset is provided on pin 11 The negative signal is provided on pin 12 The Crypto reset pulse is 150ms in duration and occurs every 4 8 12 or 16 seconds as selected...

Страница 14: ...trol 2 25 Channel reverse Flow Control 2 27 Channel Flow Control Translation 2 29 Channel EIA Propagation 2 30 Channel Break Propagation 2 32 Channel Echoplex 2 33 Channel Flyback Buffering 2 35 Channel CTS RTS Control 2 36 Channel Messages Enabled 2 38 Channel Supervisor Enabled 2 40 Channel Inactivity Disconnect 2 42 Channel Disconnect Character 2 43 Link Parameters 2 46 Link Clock Source 2 46 L...

Страница 15: ...terminal connected via the DCX network to an enabled supervisor channel When the multiplexer is being used in Point to Point applications there are three additional operating methods 1 The remote front panel interface 2 A terminal connected to a remote supervisory port 3 A terminal connected to a remote asynchronous channel port enabled for the supervisory function Any of the terminals in Figure 2...

Страница 16: ... the front panel that can be used to configure the multiplexer Figure 2 2 These push buttons are NEXT LAST SELECT MON CLR Monitor Clear Figure 2 2 Multiplexer Front Panel Figure 2 2 Multiplexer Front Panel Figure 2 2 Multiplexer Front Panel Figure 2 2 Multiplexer Front Panel Figure 2 2 Multiplexer Front Panel The functions of these push buttons are summarized in Table 21 Note Note Note Note Note U...

Страница 17: ...ters MONITOR mode If this push button is pressed while in MONITOR mode the LCD will display This display will remain until the NEXT push button is pressed to enter COMMAND mode or the MON CLR push The multiplexer has four LED displays on the front panel Their functions are described in Table 2 2 Table 2 1 Front Panel Push Button Descriptions Table 2 1 Front Panel Push Button Descriptions Table 2 1...

Страница 18: ...s used to correct mistakes during entry before pressing the RETURN key Number Keys The number keys are used to select options from the menu screens TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL OPERA OPERA OPERA OPERA OPERATION TION TION TION TION Front Panel There are three modes of operation STANDBY MODE This mode displays the message SYSTEM READY and the system clock MONITOR MODE This mode allow...

Страница 19: ...lled REV nnn nn After this the events that have occurred are displayed The message queue holds 16 messages and after they are displayed they cannot be recalled The messages can be displayed on either the terminal or LCD whichever enters MONITOR mode first If more than 16 messages occur only the latest 16 are kept to be displayed Front Panel Access MONITOR mode is entered by pressing the MON CLR pu...

Страница 20: ...multiplexer uses a 24 hour clock for time displays and does not have the date maintained as part of the time stamp Queued messages are deleted when the system clock goes from 23 59 59 to 00 00 00 To enter STANDBY mode PRESS MON CLR To enter COMMAND mode PRESS NEXT Terminal Access To enter MONITOR mode from the terminal main menu TYPE 22 PRESS RETURN The terminal indicates that MONITOR mode is ente...

Страница 21: ...ion as to the type of failure detected The format of the informa tion is as follows 20312 55 SYSTEM ERROR n Where n is one of the following M EPROM checksum failed U41 U42 A memory A000 AFFF failed RAM U40 B memory B000 BFFF failed RAM U40 C memory C000 CFFF failed RAM U39 D memory D000 DFFF failed RAM U39 E memory E000 EFFF failed RAM U38 F memory F000 FFFF failed RAM U38 1 Port 1 or Supervisory ...

Страница 22: ...cates that the channel has been put in a loopback condition where the data sent to the channel both inward and outward is looped back LINK FAILED This event indicates that a link interface is no longer receving acknowledgements to its transmissions This is generated only when a link that has been operational fails A failure is declared after approximately 10 seconds of noncommunication and retries...

Страница 23: ...ff power on sequence but are cleared upon system restart Peak channel and link usage statistics Systemtime Any flow control or reverse flow control XOFF states Any channel loopbacks Link loopbacks Detected autobaud speeds Propagated EIA signals Monitor messages COMMAND MODE COMMAND MODE COMMAND MODE COMMAND MODE COMMAND MODE Command mode allows the operator to configure the multiplexer for operati...

Страница 24: ...CT DESIRED FUNCTION If the Main Menu does not appear check to make sure the SUPERVISOR ENABLED parameter is set to YES refer to Channel Supervisor Enabled paragraph If the supervisor is currently in use the message SUPERVISOR BUSY is returned Figure 2 6 Command Mode Main Menu Figure 2 6 Command Mode Main Menu Figure 2 6 Command Mode Main Menu Figure 2 6 Command Mode Main Menu Figure 2 6 Command Mo...

Страница 25: ...RS Figure 2 8 Number Sign Position Example Figure 2 8 Number Sign Position Example Figure 2 8 Number Sign Position Example Figure 2 8 Number Sign Position Example Figure 2 8 Number Sign Position Example Figure 2 9 Command Mode Display Figure 2 9 Command Mode Display Figure 2 9 Command Mode Display Figure 2 9 Command Mode Display Figure 2 9 Command Mode Display Note When a parameter is selected to ...

Страница 26: ...notes column Table 2 4 Commands Parameters and Options 1 of 2 Table 2 4 Commands Parameters and Options 1 of 2 Table 2 4 Commands Parameters and Options 1 of 2 Table 2 4 Commands Parameters and Options 1 of 2 Table 2 4 Commands Parameters and Options 1 of 2 COMMAND PARAMETER OPTIONS NOTES CHNL PARAMETERS SPEED 9600 19 200 DOWNL AUTOB 50 75 110 134 150 300 600 1200 1800 2000 2400 3600 4800 7200 TYP...

Страница 27: ...nnnn is the number of occurences LINK STATISTICS FR RECD nnn CURR FR RECD nnn PEAK FR NAKD nnn CURR FR NAKD nnn PEAK FR RSNT nnn CURR FR RSNT nnn PEAK TX UTIL nn CURR TX UTIL nn PEAK RX UTIL nn CURR RX UTIL nn PEAK nn is the percentage of utilization nnn is the number of occurences CHANNEL STATUS DRS xxx BO xxx DTR xxx RTS xxx CTS xxx RI xxx DCD xxx DSR xxx LLB xxx RLB xxx FC xxx RFC xxx ACTIVITY ...

Страница 28: ...HANNEL PARAMETER display PRESS SELECT The LCD Displays 20312 58 SELECT CHANNEL 1 2 3 4 5 6 7 8 PRESS NEXT or LAST to select a channel PRESS SELECT The asterisk before the channel number indicates the channel which is accessed The LCD will now display 20312 61 CHNL PARAMETERS Where is CHNL n SPEED CHNL n TYPE CHNL n DATA BITS CHNL n STOP BITS CHNL n PARITY CHNL n FL CTL CHNL n RV FL CTL CHNL n FL C...

Страница 29: ...transition on DTR is required to trigger the multiplexer to look for the AUTOBAUD character Note that this will be DSR OFF to ON if a standard crossover cable is used on a modem tail circuit If the speed is detected the following display appears on an attached terminal if available Channel Speed Channel Speed Channel Speed Channel Speed Channel Speed Terminal Access To select the CHANNEL PARAMETER...

Страница 30: ...immediately after the AUTOBAUD SPEED DETECTED message TYPE P capital PRESS RETURN The multiplexer will set the parity based on the P and RETURN characters received Note All channels can be set to the 19 200 speed option as long as the maximum aggregate input does not exceed 76 800bps Exceeding the 76 800bps input may cause data loss Enabling certain channel parameters can affect the aggregate inpu...

Страница 31: ... PARAM ETERS CHNL TYPE display Update the channel type PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Access From the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 1 from the CHANNEL PARAMETERS menu PRESS RETURN The terminal displays 20312 9 ENTER 1 18 CR TO CHANGE CR TO RETAIN OLD SETTING 1 2 3 4 5 6 7 8 9 10 11 12 19200 9600 7200 4800 36...

Страница 32: ...S NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n TYPE displays on the second line PRESS SELECT the LCD displays 20312 63 CHNL n TYPE Where is ASYNC HPENQ SDLC HDLC PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel type and retur...

Страница 33: ...ion the Main Menu is returned 20312 10 ENTER 1 3 CR TO CHANGE CR TO RETAIN OLD SETTING CHANNEL n TYPE CURRENTLY ASYNC 1 2 ASYNC HPENQ 3 SDLC HDLC Channel Data Bits Channel Data Bits Channel Data Bits Channel Data Bits Channel Data Bits The DATA BITS parameter establishes the number of data bits excluding any parity between the start and stop bits of the character Front Panel Access From the COMMAN...

Страница 34: ...to go to another parameter Terminal Access To access the DATA BITS parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 3 from the CHANNEL PARAMETERS menu PRESS RETURN The terminal displays TYPE n n the data bit option number PRESS RETURN The multiplexer updates the channel data bits and returns the CHANNEL PARAMETERS menu If the RETURN key is pressed without ...

Страница 35: ...s From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n STOP BITS displays on the second line PRESS SELECT the LCD displays 20312 65 CHNL n STOP BITS Where is 1 1 5 2 PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer up...

Страница 36: ...hether or not a parity bit in addition to the data bits is checked on incoming characters and appended on outgoing characters If you do not want the multiplexer to be sensitive to parity the NONE ODD NONE EVEN NONE MARK or NONE SPACE option should be chosen The NONE portion of the selection disables parity checking insertion The ODD EVEN MARK or SPACE portion of the selections refers to the parity...

Страница 37: ...S SELECT the LCD displays 20312 66 CHNL n PARITY Where is NONE ODD NONE EVEN ODD EVEN NONE MARK NONE SPACE PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel parity and returns the CHNL PARAMETERS CHNL FL CTL display Update the channel flow control PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter TerminalAccess To access the ...

Страница 38: ...resume transmission Others respond to changes in the RS 232 C leads most commonly CTS Options supported provide these and other possibilities including any user specified character as either the XOFF turning the data transmission off or the XON turning the data transmission on signal The USER option allows entry of arbitrary XON and XOFF characters After selection of the USER option the current se...

Страница 39: ... LCD displays 20312 67 CHNL n FL CTL Where is NONE DC3 DC1 DC2 DC1 DC4 DC2 USER WANG TANDEM CTS CTS DSR DSR PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel flow control and returns the CHNL PARAMETERS CHNL RV FL CTL display Update the channel Reverse Flow Control PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Ac...

Страница 40: ...s similar to flow control except that it goes in the other direction i e from the terminal or host to the multiplexer When a terminal raises a reverse flow control signal the remote end is notified via an internal control message so that flow control can be invoked there to prevent excessive buildup of data within the multiplexer The USER option can be used to set arbitrary reverse flow control XO...

Страница 41: ...FL CTL TR display Update the channel Flow Control Translation PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Access To access the REVERSE FLOW CONTROL parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 7 from the CHANNEL PARAMETERS menu PRESS RETURN The terminal displays 20312 15 ENTER 1 8 CR TO CHANGE CR TO RETAIN OLD SETTIN...

Страница 42: ...plays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n FL CTL TR displays on the second line PRESS SELECT the LCD displays 20312 69 CHNL n FL CTL TR Where is NO YES PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel flow control translation and returns the CHNL PARAMETERS CH...

Страница 43: ...PAGATION parameter controls whether or not the RS 232 C control lead inputs are propagated end to end If disabled transitions on the RS 232 C control signals are not propagated to the remote end Appendix J provides information on the EIA Signal Exceptions Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or...

Страница 44: ...LAST to go to another parameter Terminal Access To access the EIA PROPAGATION parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 9 from the CHANNEL PARAMETERS menu PRESS RETURN The terminal displays TYPE n n the EIA propagation option number PRESS RETURN The multiplexer updates the EIA propagation and returns the CHANNEL PARAMETERS menu If the RETURN key is ...

Страница 45: ...ge is received or 2 016 seconds elapse Both ends local and remote must be programmed the same for proper operation of this parameter Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n BRK PROP displays on the second line PRESS SE...

Страница 46: ...her or not the multiplexer should echo back to the attached peripherals all printable characters received If selected all input except control characters are echoed back to the terminal The purpose of this parameter is to shorten the response time for half duplex terminals All characters are Echoplexed except a flow control XOFF Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST u...

Страница 47: ... is NO YES PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel Echoplex and returns the CHNL PARAM ETERS CHNL FLYBACK display Update the channel Flyback PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Access To access the ECHOPLEX parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN T...

Страница 48: ...ing The FLYBACK BUFFERING parameter causes detection and regeneration at the remote end of any delay encountered after reception of characters which cause print heads to flyback to the beginning of a line If selected the delay is regenerated after the ASCII characters Carriage Return Line Feed Form Feed Horizontal Tab and Vertical Tab Front Panel Access From the COMMAND MODE display PRESS NEXT or ...

Страница 49: ... PRESS RETURN The multiplexer updates the channel flyback buffering and returns the CHAN NEL PARAMETERS menu If the RETURN key is pressed without entering a flyback buffering option the Main Menu is returned Channel CTS RTS Control Channel CTS RTS Control Channel CTS RTS Control Channel CTS RTS Control Channel CTS RTS Control The CTS RTS CONTROL parameter allows selection of whether or not the CTS...

Страница 50: ...SELECT the LCD displays 20312 74 CHNL n CTS RTS Where is NO YES PRESS NEXT or LAST until the desired option displays PRESS SELECT The multiplexer updates the channel CTS RTS and returns the CHNL PARAM ETERS CHNL MSGS ENAB display Update the channel Message Enabled PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Access To access the CTS RTS CONTROL parameter from the...

Страница 51: ...rom the multiplexer such as DATA LOST LINK DOWN or AUTOBAUD SPEED DETECTED Such messages are usually disabled on the channel port at the host or at a non ASCII terminal Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n MSGS ENAB...

Страница 52: ...LED parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 14 from the CHANNEL PARAMETERS menu PRESS RETURN The terminal displays TYPE n n the messages enabled option number PRESS RETURN The multiplexer updates the channel messages enabled and returns the CHAN NEL PARAMETERS menu If the RETURN key is pressed without entering a messages enabled option the Main Me...

Страница 53: ...S NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n SPVR ENAB displays on the second line PRESS SELECT the LCD displays 20312 76 CHNL n SPVR ENAB Where is NO YES PRESS NEXT or LAST until the desired option displays PRESS SELECT If the YES option is selected the current supervisor logon character is dis played A new character may be entered using the number keys i...

Страница 54: ...the current supervisor logon character is dis played A new character may be entered using the number keys in decimal from Appendix C Press the RETURN key to update the multiplexer The multiplexer updates the channel supervisor enabled and returns the CHANNEL PARAMETERS menu If the RETURN key is pressed without entering a supervisor enabled option the Main Menu is returned 20312 23 ENTER 1 2 CR TO ...

Страница 55: ...nel Access From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n INAC DISC displays on the second line PRESS SELECT the LCD displays 20312 77 CHNL n INAC DISC Where is NO YES PRESS NEXT or LAST until the desired option displays PRESS SELECT The multip...

Страница 56: ... INACTIVITY DISCONNECT CURRENTLY NO 1 2 YES NO The DISCONNECT CHARACTER parameter is only relevant in DCX net working applications Upon receipt of the disconnect character a message is generated to the DCX to either make or tear down a DCX 850 User Switching Option USO connection This character is normally CTRL T but you may specify any other character by selecting the USER option Front Panel Acce...

Страница 57: ...w character can be entered using the number keys in decimal from Appendix C Press the RETURN key to update the multiplexer The multiplexer updates the channel disconnect character and returns the CHNL PARAMETERS CHNL SPEED display Update the channel Speed PRESS MON CLR to exit or PRESS NEXT or LAST to go to another parameter Terminal Access To access the DISCONNECT CHARACTER parameter from the Mai...

Страница 58: ... in decimal from Appendix C Press the RETURN key to update the multiplexer The multiplexer updates the channel disconnect character and returns the CHANNEL PARAMETERS menu If the RETURN key is pressed without entering a disconnect character option the Main Menu is returned 20312 25 ENTER 1 3 CR TO CHANGE CR TO RETAIN OLD SETTING CHANNEL n DISCONNECT CHARACTER CURRENTLY CTL T 1 2 USER CTL T 3 NONE ...

Страница 59: ...ck on Pin 24 internal clock With synchronous modems the exter nal clock is normally used When external is chosen the clock rate parameter has no affect on link transmission However the clock rate should still be set so that the link statistics are computed correctly Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until LINK PARAMETERS displays on the second line PRESS SELECT Th...

Страница 60: ...he LINK PARAM ETERS menu If the RETURN key is pressed without entering a clock source option the Main Menu is returned 20312 28 ENTER 1 3 CR TO CHANGE CR TO RETAIN OLD SETTING LINK CLOCK SOURCE CURRENTLY INTERN 1 2 EXTERNAL INTERNAL The CLOCK RATE parameter selects the data rate of the link port It is used when the internal clock is selected and for link statistics The CLOCK RATE parameter should ...

Страница 61: ...lays PRESS SELECT key The multiplexer updates the link clock rate and returns the LINK PARAM ETERS LINK CLK SOURCE display Update the link Clock Source or PRESS MON CLR to exit Terminal Access To access the CLOCK RATE parameter from the Main Menu TYPE 2 PRESS RETURN The terminal displays TYPE 2 from the LINK PARAMETERS menu PRESS RETURN 20312 26 ENTER 1 2 CR TO SELECT PARAMETER OR CR TO QUIT LINK ...

Страница 62: ...pervisory Commands and Options COMMAND DEFAULT OPTIONS SPEED 9600 50 75 110 134 150 300 600 1200 1800 2000 2400 3600 4800 7200 9600 or AUTOB DATA BITS 8 8 or 7 STOP BITS 2 1 1 5 2 PARITY NONE ODD NONE ODD NONE EVEN ODD EVEN NONE MARK NONE SPACE RV FL CTL Reverse Flow Control NONE DC3 DC1 DC2 DC1 DC4 DC2 or NONE NOTE These are the only supported supervisory parameters and options Front Panel Access...

Страница 63: ...upervisory Port and returns the next Supervisory Port parameter display Terminal Access To access the SUPERVISORY PORT parameter from the Main Menu TYPE 3 PRESS RETURN The terminal displays TYPE n n supervisory parameter number PRESS RETURN TYPE n n supervisory option number PRESS RETURN The multiplexer updates the Supervisory Port and returns the SUPERVISORY PORT PARAMETERS menu If the RETURN key...

Страница 64: ...s From the COMMAND MODE display PRESS NEXT or LAST until COPY PARAMETERS displays on the second line PRESS SELECT The LCD displays 20312 84 COPY FROM CHNL 1 2 3 4 5 6 7 8 PRESS NEXT or LAST to choose the channel to copy FROM PRESS SELECT The LCD displays 20312 85 COPY TO CHNL 1 2 3 4 5 6 7 8 PRESS NEXT or LAST to choose the channel to copy TO PRESS SELECT The LCD displays 20312 86 COPY PARAMETERS ...

Страница 65: ...ed for each of the ports Each channel is assigned a minimum buffer space to prevent lockout The statistics recorded include CURRENT BUFFER UTILIZATION This percentage indicates the amount of buffer usage currently for this channel PEAK BUFFER UTILIZATION This percentage indicates the channel buffer usage when all channels together were at the highest total utilization since the last statistics res...

Страница 66: ...uffer Utilization EXC nnnn FC nnnn Channel Exceptions Flow Control RV FC nnnn Reverse Flow Control PRESS NEXT or LAST to scroll through statistics PRESS MON CLR to exit To update the channel statistics display PRESS SELECT To display the channel status in real time continuous update PRESS HOLD SELECT PRESS MON CLR Release the keys The display is continuously updated each second providing the abili...

Страница 67: ...to exit 20312 32 CHANNEL STATISTICS CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 TOTAL CURRENT BUFFER UTIL 02 02 02 02 02 02 02 02 16 PEAK BUFFER UTIL 02 02 02 02 02 02 02 02 16 CHANNEL EXCEPTIONS 0000 0000 0000 0000 0000 0000 0000 0000 00000 FLOW CONTROLS 0000 0000 0000 0000 0000 0000 0000 0000 00000 REV FLOW CONTROLS 0000 0000 0000 0000 0000 0000 0000 0000 00000 ENTER CR TO EXIT ...

Страница 68: ...otal link band width used in the receive direction in the most recent second PEAK RECEIVE LINK UTILIZATION This is the highest percentage of total link bandwidth used in the receive direction for any one second interval since the last reset CURRENT FRAMES RECEIVED This is the number of frames received in the last second PEAK FRAMES RECEIVED This is the highest number of frames received in a second...

Страница 69: ...UTIL nn PEAK Peak Transmit Link Utilization RX UTIL nn CURR Current Receive Link Utilization RX UTIL nn PEAK Peak Receive Link Utilization PRESS NEXT or LAST to scroll through the statistics PRESS MON CLR to exit To update the link statistics display PRESS SELECT To display the channel status in real time continuous update PRESS SELECT MON CLR simultaneously Release the push buttons The display is...

Страница 70: ... STATISTICS CURRENT TRANSMIT LINK UTILIZATION 00 PEAK TRANSMIT LINK UTILIZATION 00 CURRENT RECEIVE LINK UTILIZATION 00 PEAK RECEIVE LINK UTILIZATION 00 CURRENT FRAMES RECEIVED PER SECOND 000 PEAK FRAMES RECEIVED PER SECOND 000 CURRENT ERRORED FRAMES RECD PER SEC 000 PEAK ERRORED FRAMES RECD PER SECOND 000 CURRENT RESENT FRAMES PER SECOND 000 PEAK RESENT FRAMES PER SECOND 000 ENTER CR TO EXIT ...

Страница 71: ... is cleared A CHANNEL RESET System Reset or power failure will clear a channel loopback state To determine the loopback status use the CHANNEL STATUS command 20312 34 2 3 2 3 A LOCAL CHANNEL LOOPBACK LOCAL LINK LOOPBACK 2 3 2 3 B REMOTE CHANNEL LOOPBACK Figure 2 10 Loopback Points from 3028 Figure 2 10 Loopback Points from 3028 Figure 2 10 Loopback Points from 3028 Figure 2 10 Loopback Points from...

Страница 72: ...access LOCAL CHANNEL LOOPBACK from the Main Menu TYPE 7 PRESS RETURN TYPE n n the channel to be looped cleared PRESS RETURN When a channel loopback is activated the terminal displays When a channel loopback is cleared the terminal displays The multiplexer performs the local channel loopback A message with the time the loopback occurred is stored in the MONITOR MODE queue to be displayed when the m...

Страница 73: ...STATUS command Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until REM CHNL LOOPBK displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT The multiplexer sets or clears the remote channel loopback on the designated channel and returns to the COMMAND MODE display A message with the time the loopback occurred is stored in the MONITOR...

Страница 74: ...d acts as a toggle switch The first time it is selected the local link loopback is activated The second time it is selected the local link loopback is cleared During a link loopback state the link down LED on the front panel will flash to indicate the existence of the loopback state A LINK RESET System Reset or power failure will also clear a local link loopback state Front Panel Access From the C...

Страница 75: ...ESS NEXT or LAST until CHNL RESET displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number or ALL CHANNELS PRESS SELECT The multiplexer resets the designated channel s and returns to the COM MAND MODE display A message with the time the channel reset occurred is stored in the MONITOR MODE queue to be displayed when the mode is entered Terminal Access To reset a SINGLE...

Страница 76: ... this command is used for test purposes on an established link Front Panel Access From the COMMAND MODE display PRESS NEXT or LAST until LINK RESET displays on the second line PRESS SELECT The multiplexer resets the link and returns to the COMMAND MODE display A message with the time Link Reset occurred is stored in the MONITOR MODE queue to be displayed when the mode is entered Terminal Access To...

Страница 77: ...returns to the Main Menu The CHANNEL VALIDATE command initiates a test of the data path end to end for the selected channel A test word is sent to the remote end of a connec tion and looped back If the initiating channel receives the looped back test word the test is passed If the test word is not received back at the initiating channel within five seconds the test is failed Front Panel Access Fro...

Страница 78: ...ed the LCD displays 20312 91 CHNL n VALIDATE TEST FAILED PRESS MON CLR to exit Terminal Access To access CHANNEL VALIDATE from the Main Menu TYPE 14 PRESS RETURN TYPE n n the channel number to be tested PRESS RETURN If the test passed the terminal displays If the test failed the terminal displays PRESS RETURN to exit 20312 40 VALIDATE TEST PASSED CR TO EXIT 20312 41 VALIDATE TEST FAILED CR TO EXIT...

Страница 79: ... until CHNL STATUS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT The LCD displays 20312 92 CHNL STATUS Where is DRS xxx BO xxx Data Rate Secondary Select Busy Out DTR xxx RTS xxx Data Terminal Ready Ready To Send CTS xxx RI xxx Clear To Send Ring Indicator DCD xxx DSR xxx Data Carrier Detect Data Set Ready LLB xxx RLB xxx Local Loopback Remote ...

Страница 80: ...ore the option that can be changed Only the EIA outputs CTS RI DCD and DSR can be changed The change is from ON to OFF similar to a toggle switch To change a display PRESS SELECT The display will have an symbol before the xxx indicating the change was forced by the operator The CHANNEL PARAMETER CTS_RTS ENABLED is overridden when the CTS signal is forced using this command To update the next param...

Страница 81: ...OUTPUT SIGNAL OR CR TO EXIT Remote Signon Remote Signon Remote Signon Remote Signon Remote Signon The REMOTE SIGNON command is used in a point to point application with a 3028 Turbo CTS 2031 Turbo multiplexer at each end It allows access to the supervisory functions at the remote end Any command that is available on the local supervisory facility can be accessed except Remote Signon Link Reset and...

Страница 82: ...e supervisor facility Only one terminal can be logged on as supervisor at a time To access REMOTE SIGNON from the Main Menu TYPE 16 PRESS RETURN The terminal displays the system menu from the remote 3028 Turbo CTS 2031 Turbo multiplexer or a prompt for the password to be entered if one is pro grammed Enter the password PRESS RETURN The menu appears and you are logged on and may continue to change ...

Страница 83: ...til REMOTE SIGNOFF displays on the second line 20312 97 command mode remote signoff PRESS SELECT The multiplexer logs off the remote multiplexer and returns to local operation 20312 98 command mode remote signedoff A message is stored in MONITOR mode indicating the signoff and the time Terminal Access To access REMOTE SIGNOFF from the Main Menu TYPE 17 PRESS RETURN The multiplexer logs off the rem...

Страница 84: ...ss SET SYSTEM PASSWORD from the Main Menu TYPE 18 PRESS RETURN The terminal displays Enter the fixed password If the incorrect entry is made the prompt is repeated two more times for the correct entry If the correct entry is made the screen displays TYPE password password the selected password PRESS RETURN To delete a password completely enter a CARRIAGE RETURN for the new password entry The termi...

Страница 85: ...s the second line PRESS SELECT Note The multiplexer uses a 24 hour clock Entries using this command should reflect this The system time is reset to 00 00 00after a power failure The SET SYSTEM BANNER command allows you to program the top line on the Main Menu The system accepts up to 60 characters and prints them each time the Main Menu is displayed To access SET SYSTEM BANNER from the Main Menu T...

Страница 86: ...ted the prompt is returned Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Front Panel Front Panel Front Panel Front Panel Front Panel The DISABLE ENABLE FRONT PANEL command disables or enables the push buttons on the front panel of the multiplexer This function is only avail able from an attached terminal This command acts as a toggle switch the first time it is selecte...

Страница 87: ...splayed The monitor mode queue will store the 16 most recent local and remote events to display Front Panel Access From the COMMAND MODE display PRESS MON CLR The LCD displays 20312 52 MONITOR MODE REV 938 14 0 This display appears until an event occurs REV nnn nn indicates the PROM level on the multiplexer board When you first enter MONITOR MODE after the PROM level display events that have been ...

Страница 88: ...SETTING THE RESETTING THE RESETTING THE RESETTING THE MUL MUL MUL MUL MULTIPLEXER TIPLEXER TIPLEXER TIPLEXER TIPLEXER Coldstart To reset the multiplexer 1 Ensure that the front panel is in MONITOR mode 2 Press Hold the SELECT push button while pressing the NEXT push button The system is reset and the front panel displays 20312 51 SYSTEM READY 00 00 00 Warmstart To reset the multiplexer without ret...

Страница 89: ... line and the parameter is displayed on the second line Use the NEXT or LAST push button to scroll through the parameters Use the SELECT push button to access the parameter options The parameter is dis played on the first line and the options are displayed on the second line The NEXT and LAST push buttons will scroll through the options The SELECT push button will update the multiplexer The MON CL...

Страница 90: ...3028 Turbo Statistical Multiplexer 154001UA A 2 ...

Страница 91: ... 50 AUTOB Data Bits 1 1 5 2 8 7 6 5 NONE ODD NONE EVEN ODD EVEN NONE MARK NONE SPACE NONE DC3 DC1 DC2 DC1 DC4 DC2 USER WANG RTS RTS DTR DTR Rev Flow Ctl Select Channel Copy From Channel Copy To Terminal Select Channel orAll Statistics Displayed Statistics Displayed Select Channel Monitor Mode Display Channel Looped Select Channel Monitor Mode Display Channel Looped Monitor Mode Display Link Looped...

Страница 92: ... condensing DIMENSIONS Height 1 75 in 4 44cm Width 17 00 in 43 18cm Depth 12 00 in 18 93cm WEIGHT 4 5 lb 2 1 kg INTERFACE STANDARDS RS 232 C V 24 LINK PROTOCOL STANDARDS Modified HDLC X 25 Level 2 ERROR CONTROL 16 bit cyclical redundancy check BUFFER CAPACITY 16 384 bytes LINK TIMING Internal from 1 2 Kbps to 19 2 Kbps External to 64Kbps Multiplexer Technical Specifications B 1 Approvals B 1 B T B...

Страница 93: ... 010 1100 2C 054 45 010 1101 2D 055 46 010 1110 2E 056 47 010 1111 2F 057 48 011 0000 30 060 0 49 011 0001 31 061 1 50 011 0010 32 062 2 51 011 0011 33 063 3 52 011 0100 34 064 4 53 011 0101 35 065 5 54 011 0110 36 066 6 55 011 0111 37 067 7 56 011 1000 38 070 8 57 011 1001 39 071 9 58 011 1010 3A 072 59 011 1011 3B 073 60 011 1100 3C 074 61 011 1101 3D 075 62 011 1110 3E 076 63 011 1111 3F 077 De...

Страница 94: ...e only ASCII mes sages are supported the parity bit is assumed to be bit eight The parity is inserted by the software but is subject to the data bits parameter in that if the data bits are not set to eight the eighth bit is not sent by the hardware ODD and EVEN parity settings make the multiplexer sensitive to parity Parity is checked on incoming characters stripped for transmission and then recal...

Страница 95: ...or ACKs and converting then to internal control codes to send to the local end The result is a 5 block window allowing ENQ blocks and ACKs to be overlapped making transmission more efficient Both ends of the connection must be configured HPENQ for this to work Figure E 1 gives a sequence chart of the protocol assistance ENQ ACK ENQ ACK ENQ ACK ENQ ACK ENQ ACK PROTOCOL PROTOCOL PROTOCOL PROTOCOL PR...

Страница 96: ... end is thus set to a Reverse Flow Control RFC option of DTR DTR no special crossover or tandem option is required At the host end the Tandem computer looks for a rising Pin 12 to signal T Pause XOFF and a falling Pin 12 to mean Ready XON At this end there is a need for both a special Tandem crossover cable and a Tandem option for the Flow Control FC parameter to do the following Invert the DTR si...

Страница 97: ... are propagated separately by the 2031 Turbo multiplexer as flow control characters to the host end The CRT issues an XOFF of FA hexadecimal and an XON of F8 while the printer uses an XOFF of FB and an XON of F9 To support this mechanism the WANG option must be selected for the Reverse Flow Control option at the terminal end at the host end select the WANG option for Flow Control NONE for Reverse ...

Страница 98: ...he terminal will stop and start transmission from the multiplexer to the terminal using the specified in band reverse flow control XOFF XON characters Upon receiving a reverse flow control XOFF character from the terminal the multiplexer will immediately suspend transmission to the terminal and send the in band reverse flow control character to the host end The host end multi plexer will convert t...

Страница 99: ...L END A NONE 1 Transparent data transmission including DC1 DC2 DC3 and DC4 1 Transparent data transmission including DC1 DC2 DC3 and DC4 1 Transparent data DC2 DC3 and DC4 RTS RTS DTR DTR 1 Transparent data transmission including DC1 DC2 DC3 and DC4 1 Transparent data transmission including DC1 DC2 DC3 and DC4 2 End B CTS and DSR follow End A DTR if local CTS then End A RTS must be on 1 Transparen...

Страница 100: ... strapping aids A nonscale drawing showing the relative location of each wire strap and each miniature switch A nonscale drawing of each miniature switch showing the standard and mandatory setting for each switch segment Tables summarizing the strapping the standard setting and the paragraph reference for each strap function The features set at the factory are implemented through miniature switche...

Страница 101: ...B go to Port 8 JP9 selects the TX Clock Source for the Composite Port Select 9A for clock source from Pin 15 TxC select 9B for clock source from Pin 24 ETxC Factory default is 9A F1 and F2 provide over current protection for the 2031 Turbo When the Power Selector switch is set for 115V replace blown fuses with 0 16ASB 250V When the Power Selector switch is set for 230V replace blown fuses with 0 0...

Страница 102: ... Used For Factory Test Only Flow Control Data Loss Watchdog Timer TX Clock Source Pin 15 Pin 24 Not Connected Chassis Signal Gnd Enable Disable NEXT LAST SEL MON CLR JP16 JP15 IEC Power Connector Power Selector Krypto Reset Period JP15 ON ON OFF OFF JP16 ON OFF ON OFF Time Delay 4 sec 8 sec 12 sec 16 sec Port 2 Port 1 115 Fuse Holders JP8 8B 8A JP7 7B 7A Enable Disable JP6 6B 6A JP5 5B 5A Enable D...

Страница 103: ...I 25 This appendix defines the requirements for enhancing the capability of the 3028 Turbo CTS 2031 Turbo Multiplexer to provide support for bit oriented synchro nous protocols SDLC HDLC on some or all of the channels INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION The SDLC HDLC protocol permits multiplexing of bit oriented synchronous data from selected channels on a demand basis...

Страница 104: ... any data input from the channel which is not a flag character is discarded SDLC HDLC is code transparent and the only unique bit stream is the flag field The logic will not allow the 01111110 pattern to be transmitted in other parts of the frame The transmitter watches the transmit data stream and automatically inserts a 0 after any successive five 1 s The receiver searches the receive data strea...

Страница 105: ...R GND DCD TXC RXC DTR RI DRS BO TXD RXD RTS CTS DSR GND DCD TXC RXC DTR RI DRS BO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 TXD RXD RTS CTS DSR GND LSD TXC RXC XRXC DTR SQ RI ETXC BUSY TXD RXD RTS CTS DSR GND LSD TXC RXC DTR RI ETXC 3028 DCE DTE Depends on clock source SDLC Tail Circuit Application Standard S...

Страница 106: ...ne important feature added with SDLC HDLC is that any SDLC HDLC channel is given preference over any asynchronous channels when contending for link bandwidth SDLC HDLC channels are further prioritized from low to high by channel number Channel 1 has a higher priority than Channel 2 etc Note SDLC HDLC channels may not be used to access supervisory functions The3028supervisoryfunctionsareavailablefr...

Страница 107: ...NNEL n FLOW CONTROL Set the channel flow control to NONE or CTS CTS n the channel 1 through 8 to be accessed Channel Parameters Channel Parameters Channel Parameters Channel Parameters Channel Parameters This option is used to change or examine any of the nine SDLC HDLC program mable channel parameters at any of eight channel ports FrontPanelAccess From the COMMAND MODE CHANNEL PARAMETER display P...

Страница 108: ...D and all of the other parameters to their default settings as shown in Table I 1 Table I 1 SDLC HDLC Channel Parameters COMMAND PARAMETER DEFAULT SETTING CHNL PARAMETERS TYPE SDLC HDLC ASYNC or HPENQ CLK SRC INT EXT or INT EXT ENCODING NRZ or NRZI SPEED IDLE CHAR MARK or FLAG EIA PROP EIA Propigation NO or YES CTS RTS YES or NO MAX BLOCK 256 512 1K 2K 4K or 128 FLOW CTL NONE or CTS CTS After sele...

Страница 109: ...ke an ASYNC channel SDLC HDLC PRESS NEXT The LCD will display 20312 63 CHNL n TYPE Where is ASYNC HPENQ SDLC HDLC PRESS NEXT or LAST until the SDLC HDLC option displays PRESS SELECT The next time the SDLC HDLC channel is accessed through the front panel or terminal COMMAND MODE and CHNL PARAMETERS the system automati cally skips to the SDLC HDLC options The LCD will display 2031I 16 CHNL PARAMETER...

Страница 110: ...CS SET CLEAR LOCAL CHANNEL LOOPBACK SET CLEAR REMOTE CHANNEL LOOPBACK LOCAL LINK LOOPBACK RESET A SINGLE CHANNEL RESET ALL CHANNELS RESET LINK 13 14 15 16 17 18 19 20 21 22 23 RESET STATISTICS CHANNEL VALIDATE CHANNEL STATUS REMOTE SIGNON REMOTE SIGNOFF SET SYSTEM PASSWORD SET SYSTEM BANNER SET SYSTEM TIME DISABLE ENABLE FRONT PANEL ENTER MONITOR MODE LOGOFF ENTER 1 23 CR TO SELECT DESIRED FUNCTIO...

Страница 111: ...TS 8 STOP BITS 1 PARITY NONE SPACE FLOW CTL XOFF XON DC3 DC1 REV FL CTL NONE FL CTL TR NO EIA PROP NO BREAK NO ECHO NO FLYBK NO CTS RTS NO MSGS ENAB NO SUPERV ENAB NO INACT DISC NO DISC CHAR CTL T CHANNEL n PARAMETERS 20312 10 ENTER 1 3 CR TO CHANGE CR TO RETAIN OLD SETTING CHANNEL n TYPE CURRENTLY ASYNC 1 2 ASYNC HPENQ 3 SDLC HDLC 2031I 4 CHANNEL n PARAMETERS 1 TYPE SDLC HDLC 6 EIA PROP NO 2 CLOC...

Страница 112: ...PRESS SELECT PRESS NEXT or LAST until CHNL n TYPE displays on the second line PRESS SELECT The LCD displays 20312 63 CHNL n TYPE Where is ASYNC HPENQ SDLC HDLC PRESS NEXT or LAST until SDLC HDLC appears on the second line PRESS SELECT At this time if desired it is possible to configure the channel to an ASYNC or HPENQ channel ALL parameter settings will be reset to the default settings for the sel...

Страница 113: ...lect the internal INTERN clock the 3028 Turbo CTS 2031 Turbo multiplexer furnishes both transmit and receive clocks on Pins 15 and 17 If you select external EXTERN clock the 3028 Turbo CTS 2031 Turbo multiplexer will accept external transmit clock on Pin 24 and receive clock on Pin 18 If internal external INT EXT clock is selected the 3028 Turbo CTS 2031 Turbo multiplexer will furnish receive cloc...

Страница 114: ... INTERN EXTERN INT EXT PRESS NEXT or LAST until SDLC HDLC appears on the second line PRESS SELECT TerminalAccess To access the CLOCK SOURCE parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 2 fromtheCHANNELPARAMETERSMenu PRESS RETURN The terminal displays 2031I 5 CHANNEL n CLOCK SOURCE CURRENTLY INTERN 1 INTERN 2 EXTERN 3 INT EXT ENTER 1 3 CR TO CHANGE CR T...

Страница 115: ...r MUST be selected as it is used internally to derive the clock FrontPanelAccess From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n ENCODING displays on the second line PRESS SELECT The LCD displays 2031I 18 CHNL n ENCODING Where is NRZ NRZI PRESS ...

Страница 116: ...ven in the Performance Guidelines section If you select external clock the speed is ignored The speed option selected must be the same at both ends of a channel connection this will not be checked by the multiplexer but is necessary for proper operation FrontPanelAccess From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAS...

Страница 117: ...eter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 4 from the CHANNEL PARAMETERS Menu PRESS RETURN The terminal displays 2031I 7 CHANNEL n SPEED CURRENTLY 9600 1 9600 3 4800 5 2400 2 7200 4 3600 6 1200 ENTER 1 6 CR TO CHANGE CR TO RETAIN OLD SETTING ...

Страница 118: ...METERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n IDLE CHAR displays on the second line PRESS SELECT The LCD displays 2031I 20 CHNL n IDLE CHAR Where is FLAG MARK PRESS NEXT or LAST until desired option appears on the second line PRESS SELECT TerminalAccess To access the IDLE CHAR parameter from the Main Menu ...

Страница 119: ...ced high or low on or off This could be used for example to hold DSR high An explanation of this may be found in the CHAN NEL STATUS section FrontPanelAccess From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n EIA PROP displays on the second line PR...

Страница 120: ...that the user configure both 3028 Turbo CTS 2031 Turbo multiplexers for CTS RTS This configuration allows the multiplexer to simulate a modem and will allow the 3028 Turbo CTS 2031 Turbo multiplexer to drop the CTS if the composite link goes down and to follow the state of RTS when the link comes back up The CTS RTS configuration will also allow flow control to function properly if enabled If the ...

Страница 121: ...TS RTS displays on the second line PRESS SELECT The LCD displays 2031I 21 CHNL n CTS RTS Where is YES NO PRESS NEXT or LAST until desired option appears on the second line PRESS SELECT TerminalAccess To access the CTS RTS parameter from the Main Menu TYPE 1 PRESS RETURN TYPE n n channel number PRESS RETURN TYPE 7 fromtheCHANNELPARAMETERSMenu PRESS RETURN The terminal displays 2031I 10 CHANNEL n CT...

Страница 122: ...Choosing a value larger than the actual maximum block size may cause delays leading to time outs FrontPanelAccess From the COMMANDMODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n MAX BLOCK displays on the second line PRESS SELECT The LCD displays 2031I 22 CHNL n ...

Страница 123: ...o there are only two choices for this parameter none or CTS CTS FrontPanelAccess From the COMMAND MODE display PRESS NEXT or LAST until CHNL PARAMETERS displays on the second line PRESS SELECT PRESS NEXT or LAST to choose a channel number PRESS SELECT PRESS NEXT or LAST until CHNL n FLOW CTL displays on the second line PRESS SELECT The LCD displays 2031I 23 CHNL n FLOW CTL Where is NONE CTS CTS PR...

Страница 124: ...CURRENT BUFFER UTILIZATION This percentage amounts to current buffer usage for this channel PEAK BUFFER UTILIZATION This percentage indicates the channel s buffer usage when all channels together were at the highest total utiliza tion since the last statistics reset CHANNEL EXCEPTIONS This is a count of the number of exceptions which have occurred since the last statistics reset or since the chann...

Страница 125: ...RESS SELECT TerminalAccess To access the CHANNEL STATISTICS parameter from the Main Menu TYPE 5 PRESS RETURN The terminal displays 2031I 13 CHANNEL STATISTICS CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 TOTAL CURRENT BUFFER UTIL 02 02 02 02 02 02 02 02 16 PEAK BUFFER UTIL 02 02 02 02 02 02 02 02 16 CHANNEL EXCEPTIONS 0000 0000 0000 0000 0000 0000 0000 0000 00000 FLOW CONTROLS 0000 0000 0000 0000 0000 0000 000...

Страница 126: ...r SDLC HDLC channels Cyclic Redundancy Cyclic Redundancy Cyclic Redundancy Cyclic Redundancy Cyclic Redundancy Check Check Check Check Check The CRC CCITT polynomial X16 X12 X5 1 is used for generating the frame check sequence characters in each frame Frame Abort Frame Abort Frame Abort Frame Abort Frame Abort The multiplexer recognizes the occurrence of 7 consecutive 1 bits within an incoming SDL...

Страница 127: ...e start of the next frame on that channel before the current frame has terminated in which case a BAD CRC will be generated into the outgoing frame Transmission Underrun Transmission Underrun Transmission Underrun Transmission Underrun Transmission Underrun When transmitting on an SDLC HDLC channel if the multiplexer or the link cannot supply data fast enough to maintain the line rate on the chann...

Страница 128: ...on Table J 1 lists the priority associated with EIA parameters Table J 1 EIA Parameter Priorities For example suppose a channel is configured for CTS RTS and CTS CTS flow control The CTS output signal to that channel would always be the same as the RTS input signal regardless of the flow control state Another example suppose a channel is configured for EIA propagation and CTS CTS flow control The ...

Страница 129: ...et but only if proper ventilation is provided To rack mount the 3028 Turbo CTS 2031 Turbo units you need the rack mount kit which is provided in the shipping container The air temperature in the cabinet must not exceed 45ºC and the case temperature of the 3028 Turbo CTS 2031 Turbo must not exceed 50ºC Since the reliability of the product depends on the temperature the rise on the air temperature w...

Страница 130: ...ultiplexers angebrachten Stecker Typ RS 232 mit der Bezeichnung COMPOSITE und das andere Ende mit dem Eingangs Port des Modems falls notwendig entsprechende Informationen sind im Modem Handbuch zu finden Vergleiche Abb L 1 1 Zum Anschluss des DTE Geräts am Multiplexer sind die RS 232 Stecker Port 1 bis Port 8 zu benutzen Der Anschluss erfolgt mit einem abegeschirmten Kabel vomKundengestellt 2 Das ...

Страница 131: ...nfiguration an die vom Installations oder Benienungspersonal ensprechend den ortlichen Betriebsanforderungen geändert werden kann Im Falle einer erfolglosen Selbst Prüfung ist die Anzeige SYSTEM ERROR Um geringfügige Storeinflusse auszuschliessen versucht man einen mehrmaligen Ein Ausschalte Zyklus der Anlage zu unternehmen kann die Anlage infolge fortgesetzter Schwierigkeiten nicht in Betriebszus...

Страница 132: ...el Messages Enabled 2 38 CHANNEL PARAMETERS 2 15 CHANNEL RESET 2 58 2 62 Channel Reverse Flow Control 2 27 CHANNEL SPEED 2 16 I 14 CHANNEL STATISTICS 2 52 2 54 CHANNEL STATUS 2 58 I 24 CHANNEL STATUS command 2 66 Channel Stop Bits 2 22 Channel Supervisor Enabled 2 40 Channel Type 2 19 Channel Validate 2 64 Clear a local link loopback 2 61 CLOCK RATE parameter 2 47 CLOCK SOURCE parameter 2 46 I 12 ...

Страница 133: ...rse flow control G 1 INACTIVITY DISCONNECT parameter 2 42 INT EXT I 11 INTERFACE STANDARDS B 1 INTERN I 11 Internal clock 2 46 L LED displays 2 4 Link Clock Rate 2 47 Link Clock Source 2 46 LINK DOWN 2 23 2 38 Link down LED 2 61 Link Parameters 2 46 2 46 2 47 2 49 LINK PROTOCOL STANDARDS B 1 LINK RESET 2 61 2 63 Link Statistics 2 55 LINK STATISTICS command 2 55 LINK TIMING B 1 Local Channel Loopba...

Страница 134: ...SDLC HDLC Frame Format I 2 SDLC HDLC protocol I 1 SET SYSTEM BANNER command 2 72 SET SYSTEM PASSWORD command 2 70 SET SYSTEM TIME command 2 72 Signal Ground to Chassis Ground H 2 SNA I 1 SPACE 2 23 SPEED parameter 2 16 Standard setting H 1 Statistics I 22 Statistics Reset 2 64 STOP BITS parameter 2 22 Storage B 1 Strap options H 1 Strapping features H 1 SUPERVISOR BUSY 2 11 SUPERVISOR ENABLED 2 11...

Страница 135: ...B 7622 Rickenbacker Drive Gaithersburg MD 20879 Sales 301 975 1000 Support 301 975 1007 Web Address www patton com ...

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