Zenith Data Systems Z-39 Technical Training Manual Download Page 49

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Summary of Contents for Z-39

Page 1: ...T 1f1 H tems Technical Training Z 39 VIDEO DISPLAY TERMINAL TT 27 585 169...

Page 2: ...lay Un1t 1 7 Conneotions 1 11 Interfacing 1 14 DTE and DCE Devices 1 14 SELF CHECK TESTS 1 15 POWER ON INDICATOB 1 15 Chapter 2 General Infor ation 2 1 Theory of Operation 2 1 Vertical Oscillator 2 2...

Page 3: ...SUPPLY REMOYAL _ 3 VIDEO CIRCUIT BOARD BEMOVAL 4 4 CATHODE RAY TUBE REMOYAL 4 5 Cbapter 5 Service In tructiQn 5 1 Introduction 5 1 Satety Servicing Guidelines 5 1 WARNINGS 5 1 CAUTIONS 5 2 Cleaning P...

Page 4: ...alphabetic Control For at leys 3 3 Keys 3 _ Special Purpose leys 3 5 eypad leys 3 7 Cabinet Top Removal 4 1 Cbassis Base Re oval 4 2 Terminal Logic Board Removal 4 3 Pover Supply Re oval 4 4 Video Ci...

Page 5: ...al Connector DCE 1 15 Self Cbeck Tests 1 15 3 1 Setup Functions 3 8 5 1 5 2 5 3 5 4 5 5 General Troublesbooting 5 1 Terminal Logic Board Troublesbootlng 5 9 Video Circuit Board Troublesbooting 5 11 Tr...

Page 6: ...n modes Zenith ANSI Lear Siegler ADM3A and Hazeltine 1500 Programmable character attributes and scrolling regions Advanced keyboard features automatic key repeat N key rollover status indicators user...

Page 7: ...ORMATION Provides information on cleaning inspection testing and troubleshooting to the circuit board level PARTS LIST Provides exploded views with part numbers board component views and reference des...

Page 8: ...ter High impedance input zero to 1000 volts zero to one megohm Heath Hodel SH 2215 Variable power supply Zero to 120 VAC 3 amperes Oscilloscope probe Low capacitance adjustable from 15 pF to 50 pF 4 n...

Page 9: ...proximate Normal 128 characters 95 ASCII upper and lowercase numerics punctuation and 33 graphic characters Alternate 128 characters 95 ASCII superscript foreign characters scientific notation and 33...

Page 10: ...e on off beep tone 1 kHz for 200 ms EDITING AND ERASING FUNCTIONS Editing Erasing TERMINAL COMMUNICATIONS Type Baud Rates Hode Code Format Word Length Stop Bits Sync Parity Insert or delete character...

Page 11: ...its one parity bit Hardware handshaking only Parity same as main port setting Temperature 32 to 105 degrees Fahrenheit O O degrees Celsius Humidity 10 90S relative non condensing Temperature O to 150...

Page 12: ...screws are accessible 2 Remove the four 6 32 x 5 8 screws at points A a C and D then remove the base chassis 3 Remove the 6 32 x 5 8 screw securing the power supply protectivE shield from the undersid...

Page 13: ...fer to Figure 1 2 Keyboard Cable Connects the keyboard td t e video display Keyboard The keyboard consists of 91 keys four visual indicators and is available in several different languages Refer to Ap...

Page 14: ...oard must be enabled to operate OFF LINE Lights when the terminal is off line from the host computer CAPS LOCK Lights when the CAPS LOCK function is on NOTE All LED indicators illuminate red except fo...

Page 15: ...of the video display Rotate the video display on the cha sis base and tilt the CRT screen to the desired viewing angle as follows 1 Grasp both sides of the CRT and swivel it right or left to the desir...

Page 16: ...er plug the RS 232 cable into the DTE connector and the other end into the computer s DCE connector refer to the computer hardware manual for the proper connector When connecting the terminal to a mod...

Page 17: ...a computer system It may be directly connected or connected through telephone lines via a modem to any computer The following discussion covers the necessary information for proper interface with a co...

Page 18: ...a Se t Rea d y Signal Ground Carrier Detect Data Terminal Ready HOTE indicates pins tied to line 20 SELF CHECK TESTS As soon as you turn on the terminal a series of internal self check tests are perf...

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Page 20: ...agram description of the terminal s major assemblies Refer to Figure 2 1 the overall block diagram US ILI EL xPAIo S IO soon OR u LI r D OC P H OR 0 OCK l CDI K P OC RO 1 115 BYT S UA1 C UCH D K YBOU...

Page 21: ...ontal frequency with the incoming pulse The PHASE control is used to center the video information on the CRT screen The oscillator signal is fed to an inverter stage which amplifies the signal The amp...

Page 22: ...signals due to multiple key closures The port 2 bits CO LSB through C3 MSB of U1 control the scan lines of the 1 of 16 decoder U2 The port 2 bits drive U2 with the selected scan line being driven low...

Page 23: ...read the following paragraphs Power Up and Reset Circuit To set the terminal back to its original operating mode after being changed by software escape sequences U433 must be reset A reset can be init...

Page 24: ...orts The terminal has two RS 232 compatible ports one is configured asDTE Data Terminal Equipment and the other is configured as DCE Data Computing Equipment The DTE port is normally used to connect t...

Page 25: ...consists of U433 a 2 line to 1 line output multiplexer U431 a quadruple line driver U442 and a quadruple ltne receiver U429 Pin 4 of multiplexer U431 is connected to a latched 1 0 pin on U433 When thi...

Page 26: ...multiplexed data bus and low order address lines Since the memory and peripheral devices in this terminal do not have on chip address latching U433 circuitry must demultiplex the address and data lin...

Page 27: ...ort 2 U433 pins 21 to 28 is used only for the higher order address byte when U433 accesses external memory The combination of ports 0 and 2 form the total 16 bit address bus Port 3 Port 3 1s used as a...

Page 28: ...y data bus The attribute data is a four bit wide nibble DO D3 applicable to the four possible attributes After placing the att ibute data 1n the display memory U433 then writes the character data out...

Page 29: ...a flow through this buffer is controlled by the buffered read signal from U433 Buffers U446 and U441 form eight single direction bus drivers four in the direction for a CPU read from the attribute dis...

Page 30: ...g operations for the terminal It consists of an inverter U411A that is biased by resistors R411 and R412 for linear operation Crystal Y401 provides positive feedback so the inverter generates a 14 784...

Page 31: ...tion the 7 392 MHz clock rate for the processor 14 784 divided by 2 is ideal for the processor s serial port baud rate generation CHARACTER GENERATION The main control for the character generator and...

Page 32: ...s the blink effect until the blink line returns to the low state allowing the video information to pass through The blink line continues to toggle in this manner as long as the blink at ribute is set...

Page 33: ...nal that creates the load action of the shift register If any of the control signals the blink attribute or vertical or horizontal retrace are active through the ohiin of OR gat s the load pin of the...

Page 34: ...the emitter of Q301 to help produce a linear sweep The shaped 60 Hz oscillator Signal is applied to differential amplifier Q303 where the base is the inverting input and the emitter the non inverting...

Page 35: ...rovides left to right linearity Inductor LX101 sets the horizontal scan width The value of CX117 determines the parabolic waveform on the pseudo B which controls the center to edge linearity The netwo...

Page 36: ...09 and C124 rectify and filter the 20 volts DC from the primary of TX102 Diode CR111 capacitor C122 and resistor R132 rectify and filter the 50 VDC from the secondary of TX102 Resistor RX130 is a curr...

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Page 38: ...how the terminal operates The overall block diagram Figure 3 1 3hows the ltajor component relationships A more detailed description is provided in Chapter 2 of this manual KEYBOARD TERMINAL LOGIC BOAR...

Page 39: ...ppear in uppercase If the status line on the video display 1s enabled a CAPS LOCK message will be displayed whenever the function is activated There is also an indicator above the riumerical keypad wh...

Page 40: ...ic Keys G GJIiii U G r t J 0 J r 8 1 21 LiJ 0 r NOTE The following paragraphs describe the most common function for each key However software may direct any key to cause some other function to take pl...

Page 41: ...ns that tell you how to use them will appear with the software programs F1 F9 Special function keys may be used by software or they may be user defined RESET BREAK This key may be used by software in...

Page 42: ...er to the left or sometimes in software duplicates the back space key A non displayable character is transmitted NO SCROLL Pressing the NO SCROLL key displays the next line of data Pressing the NO SCR...

Page 43: ...omputer that the entry has been completed The 5 key has a raised dot to indicate the home position of the calculator keypad fhe four keys 3 7 and 9 are used for special insertion and deletion applicat...

Page 44: ...not communicate with the host computer until you exit the setup mode You can also program many of the setup procedures by using software escape sequences Refer to Appendix B for more information The...

Page 45: ...ter the setup mode press the SET UP key The bottom line will indicate the setup menu A display Menu Selection To select any of the several different setup menu presentations setup mentl A through setu...

Page 46: ...u are not in the setup mode press the SET UP key and then the T key The bottom line of the screen will display the current tab settings 1234 678901 3456789012145678901234567890123456789012345678901234...

Page 47: ...set the same as the rate being used for the DeE port t The number of data bits and stop bits are not programmable at the terminal Refer to Specifications for further information ro set the baud rate t...

Page 48: ...you are in the setup mode If you are not in the setup mode press the SET UP key and then the C key The bottom line of the screen will display setup menu C Port In the noraal mode the terminal will use...

Page 49: ...eyboard Monitor The monitor mode displays the control character codes as graphic characters in reverse video When you use the monitor mode the WRAP at end of line should be enabled The terminal will n...

Page 50: ...DE if the terminal is in the character insert mode and PRINTER ON if the terminal is in the process of a print operation The clock will always be displayed unless the terminal Status Line is turned of...

Page 51: ...Shft The Keypad Shft function determines whether the normal unshifted keypad produces numeric or cursor control characters Keypad Shift Off The numeric characters on the keypad are transmitted by pre...

Page 52: ...ssed individually You can turn the Key Click function on or off by pressing the 4 key on the keyboard Your selection will become effective immediately Setup Menu F To enter setup menu F press the F ke...

Page 53: ...ons are available These are USA Danish Frenoh German Italian Norwegian Spanish Swedish and UK United Kingdom Refer to Appendix A for more information In most instances you will use the normal oharaote...

Page 54: ...sts check the ROM and RAM filling the screen with all characters from the character set A short beep tone will sound when the tests are successful The tests automatically repeat until a failure is det...

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Page 56: ...e disassembly of the terminal CABINET TOP REMOVAL To remove the cabinet top refer to figure while performing the following steps 1 Remove the two 6 32 x 5 8 screws from the top rear corners of the cab...

Page 57: ...des through the cabinet Exercise care when removing the cabinet from the chassis base so as not to damage the switch 2 Disconnect the video display cable plug from P404 on the terminal logic board the...

Page 58: ...gure 4 3 Terminal Board Removal To remove the power supply for servicing refer to Figure 4 4 while performing the following steps WARNING The power supply generates lethal DC voltages Verify that the...

Page 59: ...he high voltage anode lead of the CRT using a jumper lead connected between the chassis and a screwdriver or personnel shock and or injury may result 1 Remove the cabinet top as previously described 2...

Page 60: ...onents must be removed as an assembly for servicing 9 Carefully remove the video circuit board CRT socket board and contrast control from the video display cabinet To reinstall the video circuit board...

Page 61: ...8 hex head screw the 18 flat washer and the CRT ground clip from the upper left CRT mounting bracket 8 Remove the 8 32 x 3 8 hex head screw and the 18 flat washer from the upper right CRT mounting br...

Page 62: ...connect the terminal to an isolation transformer or shock and or injury may result Discharge the high voltage anode lead of the CRT using a jumper lead connected between the chassis and a screwdrive F...

Page 63: ...are electrostatic sensitive devices These devices can be damaged by static electricity When removing an IC from its protective foam packing do not lay the IC down or let go of it until after the IC i...

Page 64: ...ts Before proceeding with troubleshooting check the adjustments affecting terminal performance Often a minor adjustment is all that is needed to restore circuits to normal operation In the event the a...

Page 65: ...damaged by too much brightness and burn the screen 8 Adjust the BRITE adjust on the video circuit board until the display is at a comfortable brightness level 9 Adjust the CONT control on the video c...

Page 66: ...te the deflection yoke until the display edges are vertical and horizontal then tighten the clamp screw 3 Adjust the centering rings on the deflection yoke to the position that best centers the displa...

Page 67: ...broken burnt or arced over components Check all circuit boards for darkened areas as evidence of component overheating WAR NI G 1ftI e s wit 0 h mod e power sup ply f ail s the f use F 1 0 n the power...

Page 68: ...Terminal logic board 3 Video circuit board 1 Contrast control turned down 2 Video circuit board Loose power cord or keyboard cable 1 On line under host computer control 2 Keyboard locked 3 Keyboard ca...

Page 69: ...not come in contact with the load resistors after power is applied The resistors will become hot and could cause severe burns 1 Connect a 120 ohm dummy load resistor rated at 2 watts between pins 3 an...

Page 70: ...46 U447 Keyboard U409 U41 1 U41 2 U414 NVRAM Checksum U413 U414 U418 Terminal Logic Board Waveforms The following waveforms were taken with the terminal off line and the screen filled with E s Refer t...

Page 71: ...HORIZONTAL RETRACE VERTICAL SCALE 2 VOLTS IDIV HORIZONTAL SCALE 20u SEC DIV Horizontal Sync Waveform Vertical Sync Waveform I VERTICAL RETRACE VERTICAL SCALE 2 VOLTS DIV HORIZONTAL 5m SEC DIV 10...

Page 72: ...Terminal logic board 2 Q301 Q302 Q303 No vertical sync 1 Terminal logic board 2 C302 CRX301 C301 R301 Horizontal off frequency Poor horizontal linearity or foldover Narrow raster Characters on screen...

Page 73: ...CIILLICTOII 0102 IW D 1t 10 lC D Figure 5 10 I I I I I I I I i s Q 3 IV OIV 0 SIC OIV Figure 5 1 f IAIE oao I IILTIIOIW a C D CC lCTOR 0 07 2V CIV lOti C DIV i I _ 0 _ CO lCTOII o o IO CI 0 alC D 12...

Page 74: ...Q302 8 78v 8 62V 6 99V Q303 7 72V 7 3V O 32V Q304 0 0 31V 9 0V Q306 9 44V 9 0V 0 Q307 10 24V 10 64V 0 Q308 6 0V 6 84V 17 1SV Q401 O 03V 0 6 SV Q402 6 5V 7 2V SO OV NOTE leference for measurements vid...

Page 75: ...a proble with the keyboard asseably substitute a known good keyboard If the problem persists refer to Figure 5 13 and oheok the 12 volts DC froa the ter inal 10gio board I KAXD 1 I W 4 KTXD 2 Keys Ter...

Page 76: ...572 01 114 00984 012 08572 012 08624 114 01108 046 10296 02 A 12669 014 11601 114 01011 01 100 00729 03E A 08337 A 13287 149 00464 114 01431 01 080 02377 014 11600 054 01046 093 02140 080 02449 149 00...

Page 77: ...02 HE 181 5193 A 12383 093 02079 096 0 0894 012 08631 194 01211 166 00269 02 012 08694 112 02247 012 08623 2 Nut 6 32 x 0 250 Sw it c h slid e Screw 4 40 x 0 375 Nut with washer 4 4Ox 0 250 DESCRIPTIO...

Page 78: ...305 ZDS PART NO 22 7742 0 22 77 3 30 Not u ed Not u ed 22 7773 22 7742 07 22 7615 08 22 7859 07 22 7773 Not used Not I i ed Not u ed Not used 22 7615 08 Not u ed Not u ed Not used 22 7615 08 22 7811 N...

Page 79: ...70 uF C317 22 7860 10 220 uF C401 22 7862 06 22 uF CII02 22 7860 05 10 uF C403 22 7749 34 82 pF C404 Not used C405 Not used C406 Not used CII07 Not used C408 22 37118 1000 pF CX 116 22 7798 03 018 uF...

Page 80: ...312 Not used CR313 Not used CR314 Not used CR31S Not used CR316 Not u led CR317 Not used CR318 Not u ed CR319 Not used CR320 Not used CR321 Not used CR322 103 254 01 CRX301 103 219 28A 19V Zener CR401...

Page 81: ...1106 Not used Rl07 63 10235 72 1 kohm Bl08 63 10184 18 82 kohm R109 Not used R1 0 Not used Rl11 63 10235 80 2 2 kohm 1112 63 10235 72 1 kohm R113 Not used R114 63 10938 52 30 kohm R115 Not used R116 6...

Page 82: ...used 63 7799 Not used 63 10184 18 Not used 63 1799 Jumper 63 9228 15 63 10184 30 Not used 63 7855 63 1736 Not used 63 10235 96 63 10236 04 63 10236 27 63 10183 40 Not used 63 10236 10 63 10235 91 63...

Page 83: ...63 10235 68 680 ohm R330 Not used R331 63 10235 10 2 7 ohm R401 Not u ed R402 63 10836 70 820 ohm R403 63 10235 72 1 kohm R404 63 10235 72 1 kohm R405 Not used R406 63 10183 40 47 ohm R407 63 7763 33...

Page 84: ...53 10559 12 3 3 ohm RX129 63 10559 48 100 ohm RX130 63 10559 32 22 ohm RX134 Jumper RX323 63 10559 12 3 3 ohm RX333 63 10559 12 3 3 ohm Tran ror ers TX101 95 3136 03 Horizontal dr iver TX102 95 3575...

Page 85: ...1 56 HE 21 769 HE 21 715 HE 21 769 HE 21 1I47 HE 21 769 HE 21 769 HE 25 915 HE 25 915 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 769 HE 2...

Page 86: ...21 769 HE 21 769 HE 21 769 HE 21 769 HE 21 56 Not u ed HE 25 918 HE 25 918 HE 25 942 HE 25 915 HE 404 635 HE 56 56 HE 235 229 HE 23S 229 HE 23S 229 HE 23S 229 HE 23S 229 HE 235 229 HE 235 229 HE 235...

Page 87: ...75 U413 HE 443 983 74S175 U414 HE 443 915 74S86 U1I15 HE 443 892 74LS166 U416 HE 444 248 Character ROM U417 HE 443 875 74LS32 U418 HE 443 875 74LS32 U419 HE 443 1068 8276 U421 HE 443 780 74LS08 U422 H...

Page 88: ...31 12 HE 6 102 12 HE 6 102 12 HE 6 472 12 HE 6 102 12 HE 6 561 12 HE 6 561 12 HE 6 102 12 HE 6 102 12 HE 6 472 12 HE 6 472 12 HE 6 102 12 HE 6 102 12 HE 6 102 12 HE 6 102 12 HE 6 103 12 HE 6 472 12 HE...

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Page 90: ...ho Z 3 T r mii al Alher e dii f l eiICe i f ijul U t 1fi o t i c an T i I II d l S t J he e qu i if 1ei t ASC I I char a et I c cloe iiI i lf r the 1 01 i lr rld Amel lca n chal ct er s et s al 9o sUF...

Page 91: ...T I f I U I I 0 I I 7 1 0 1 _ __ __ _ _ t l 1 5 10 I G IJ il IIoo 4 lle I 1 I I n r Tr T tr 1 1 1 1 1 Tr Ir I 1 ll i L J r J L J 1 FiSUt c 6 DANISHI c T 2 8 I J r I 212 1 0 _t DECIMAL OCTAL HEX NORWE...

Page 92: ...r j FISC I I Cot e DECIMAL OCTAL I HEX FRENCH AMERICAN coce CODE ICODE CHARACTER CHARACTER 35 043 23 64 100 40 a 91 133 I 58 0 92 134 5C 93 I 135 I 50 123 I 173 I I 78 e 124 I I 174 I 7C U 125 I 175...

Page 93: ...4 Ger man L ilrl al se Ke lbc ard ASCI I Cm E DECIMAL OCTAL i HEX GERMAN AMERICAN i CODE CODE I CODE CHARACTER CHARACTER 60 074 3C 62 076 3E 0 64 100 40 91 133 58 A I 92 134 5C 0 I I 135 5D 0 136 5E...

Page 94: ...1 r l l 1 1 1 1 0 c J III fo M I l 1 l I l r j I j AI 1 c 8 t If j t 0 Li r I I a 2 J J I_ i o I I FISC I I CO E DECIMAL OCTAL HEX ITALIAN AMERICAN CODE CODE CODE CHARACTER CHARACTER I 35 043 Z3 e I I...

Page 95: ...1 __ Ie I 5 C e J C i I I I I I I I 1 l J j 1 T __ _ _ L _ _ t I J Z l c l 01 e I I _ 1 i I 1 j T T I I r i j _ _1 1 _ _ _ _ I 1 ASCII cooe OECIMAL OCTAL HEX SPANISH AMERICAN COOE cooe CODE CHARACTER...

Page 96: ...l l T t J I C _ __ J 1 1 7 L s T 1 1 7I 17v r 7 r 17rr 1 t 1 _ l k L r 1 1 1 1 TT j J 1 Z 1 II 1 t l J I I I i I DECIMAL OCTAL HEX SWEDISH i CODE CODE CODE CHARACTER I I 91 133 58 A 0 92 134 5C 93 13...

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Page 98: ...f line 14 016 E SO CTRL N Shift out 15 017 F SI CTRL O Shift in 16 020 10 OLE CTRL P Data line escape 17 021 11 DC1 CTRL O Device control 1 tums transmitter on XON 18 022 12 DC2 CTRL R Device control...

Page 99: ...53 065 35 5 5 Number 5 54 066 36 6 6 NumberS 55 067 37 7 7 Number 7 56 070 38 8 8 Number 8 57 071 39 9 9 Number 9 58 072 3A Colon 59 073 3B Semicolon 60 074 3C Less than 61 075 30 Equal sign 62 076 3E...

Page 100: ...64 d d Letterd 101 145 65 e e Lettere 102 146 66 f f Letterf 103 147 67 9 9 Letterg 104 150 68 h h Letterh 105 151 69 Letteri 106 1S2 6A j j Letter j 107 153 68 k k Letterk 108 154 6C I I Letter I 109...

Page 101: ...711C 7 ESC ESC 0 ESC w ESC Ow ESC 4h ESCl4 8 8 8 ESC x ESC Ox 8 9IDC 9 ESCN ESC y ESCOy ESC IP ESC I ESC 01 ESC m ESC Om ESC n ESC On ENTER ENTER RETURN ESC M ESC OM RETURN Character is lower case L S...

Page 102: ...Key Codes Cursor Key Zenith ANSI Mode ANSI Mode Cursor MODE Cursor Key Reset ey Mode Set Up t ESCA ESC 1A ESCOA Down ESCB ESC 1B ESCOe Right ESCC ESC 1C ESCOC Left ESCD ESC 1O ESCOD HOME ESCH ESC 1 1H...

Page 103: ...6 E SO G1 Shift Out Selects the G1 character set as desig nated by SCS contrOl sequence 15 017 F SI GO Shift In Selects the GO character set as designated by SCS contrOl sequence 24 030 18 CAN X Cance...

Page 104: ...not move beyond the right margin Cursor backward lett Moves the cursor lett one character position without vertical displacement The cursor will not move beyond the left margin Reverse index Moves th...

Page 105: ...splay to and including the cursor position Erase to end of display Erases all information from and in cluding the cursor position to the end of the display Erase line Erases the entire line including...

Page 106: ...9600 M 19200 ESCxPn ZSM Set mode s Sets the following modes where Pn 1 Enable 25th line 2 Disable key clicl 3 Enter hold screen mode 4 Block cursor 5 Cursor off 6 Keypad shifted 7 Enter altemate keyp...

Page 107: ...te character font alt Underline undr Half intensity half Blinking blink Reverse video rev The video attributes are set as follows alt undr half blink rev Where attributes is the ASCII character formed...

Page 108: ...the keyboard after being dis abled by escape sequence ESC Wrap around at end of line Upon receiving the 81st Charac ter on a line the cursor is moved to the next line and the 81 st character is the fi...

Page 109: ...hru reset Resets the printer pass through function Print cursor line Prints a complete line wherever the cursor Is currently positioned ANSI Mode Code Information NOTE The terminal transmits the follo...

Page 110: ...r defined GO character set by the SCS control seQuence 24 030 18 CAN X Cancel Cancels the current escape sequence 27 033 1B ESC Escape Introduces a control sequence Summary of ANSI Escape Sequences A...

Page 111: ...TATE Control Representation CRM Reset Editing Boundary EBM Reset Erasure ERM Set FormatEff orAction FEAM Reset Format Eff or Transfer FETM Reset Guarded Area Transfer GATM NA Horizontal Editing HEM NA...

Page 112: ...CII column character H or ESC PnA ESC PnB ESC PnC ESC PnD ESCD ESC ASCII line character ASCII column characterf CUU CUD CUF CUB IND Direct cursor addressing and the 25th line must be enabled to move t...

Page 113: ...orm ESC PI PcR where I line and c column The positions are expressed in decimal ESC s PSCP Save cursor position The present cursor position is saved until the escape sequence ESC u is given ESC u PRCP...

Page 114: ...Inserts one or more blank lines depending on the value of Pn The cursor is moved to the beginning of the new blank line Delete line Deletes one or more lines of characters depend ing on the value of P...

Page 115: ...modes where Pn 1 Enable 25th line 2 Oisable key click 3 Enter hold screen mode 4 Block cursor 5 Cursor off 6 Keypad shifted 7 Enter altemate keypad mode 8 Auto LF on CR 9 Auto CR on LF One or more mod...

Page 116: ...O Character set GO is set on terminal power up To select GO when in character set G1 type the CTRL character fo SI and then the ESC sequence where Pn A United Kingdom set B United States USACII C Dani...

Page 117: ...erates an XON pressing the NO SCROLL key generates anXOFF Enter Exit select graphic rendition mode Enters and exits the ANSI graphic mode to display any of the 33 special sym bols accessed by the 26 l...

Page 118: ...SCOn ESCOI ESCOM Exit altemate keypad mode Exits the altemate keypad mode set by escape sequence ESC 7h and retums to transmit normal character codes Select protective field Pn 0 No fields protected 2...

Page 119: ...he printer the same data displayed on screen as it is sent from the host computer Auto print reset Resets printer output function Print screen set Prints the contents of the screen on the printer The...

Page 120: ...key F6 corresponds to DEC key F1 Function key F7 corresponds to DEC key F2 Function key Fa corresponds to DEC key F3 ANSI Escape Sequences Defined NOTES 1 In the ANSI mode the Terminal only recognize...

Page 121: ...ht side of the screen 13 015 D CR Carriage return Moves the cursor to the first character posi tion in the current line Nothing happens if the cursor is al ready at the first position 14 016 E SO Enab...

Page 122: ...s on the last line of a scrolling region the cursor will remain there and all data within the scrolling region will move up one line Cata on the top line of the scrolling region will be lost as it is...

Page 123: ...0 If the cursor was at the 35th column of the same row the Terminal would reply 35 099 0 35 0 0 0 3 0 96 0 Code ENQ Enable Keyboard The keyboard is enabled after entry has been inhi bited by a disable...

Page 124: ...r Moves the cursor to the first position of the first line Code DC2 Delete Line Deletes the current line The current line is defined as the line which the cursor is located on The cursor does not move...

Page 125: ...llows Code EM Insert Line All text on the current line and following is moved down one line to allow the insertion of a new line of data If text existed on the 24th line or the bottom line of the defi...

Page 126: ...the following formula Time to respond to XOFF Example buffer length XOFF point worst case receive speed transmit speed bits per character parity bits stop bit start bit receive speed The terminal is...

Page 127: ...place of a NUL character the time between characters at baud rates will be reduced Another way to transmit XOFFIXON is by using CTRl and S keys for XOFF and CTRl and a keys for XON The terminal coordi...

Page 128: ...5 2 Explanation of Function Number 1 a All characters except those listed below including ESC sequences 1 b Same as 1 a but with protective fields enabled 2 a Erase in display 2 b Same as 2 a but with...

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