Keithley Model 750 Instruction Manual Download Page 1

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Summary of Contents for Model 750

Page 1: ...INSTRUCTION MANUAL Model 750 Printer...

Page 2: ...ity at our Munich Germany office is available for our customers throughout Europe Service in the United Kingdom can be handled at our office in Reading Addition ally Keithley representatives in most c...

Page 4: ...TE THE PRINTER 3 l 3 4 INTERFACING THROUGH I O A 3 2 3 5 INTERFACING THROUGH I O 6 3 5 4 ACCESSORIES 4 l 4 l PRINTER INPUT INTERFACES 4 l 4 2 MODEL 7503 PRINTER CLOCK 4 l 4 3 MODEL 7504 SEQUENCE COUNT...

Page 5: ...6 5 17 Assembly of Connector Board 6 6 18 Controls and Modifications to Model 7503 A 2 19 Diagram of Time Set For Model 7503 A 3 20 Diagram of Model 750 7503 Operation A 4 21 Component Layout of PC 37...

Page 6: ...INSTRUCTION MANUAL Model 750 Printer SPECIFICATIONS low to high transition CONTROL OUTPUT Printer in Cycle PIG End of Print Data Hold Manual Print Print Twice iv AA...

Page 7: ...tory wired interfaces are plug to plug cb atible so that installation is very simple to perform All data is properly encoded and formatted for printout of data decimal point range and units of measure...

Page 8: ...l 750 Printer PAPER CUTTING BAR JZOI J202 POWER INDICATOR DS301 POWER S3OIA PAPER FEED S3OlB RUN S301C MANUAL PRINT S301 PRINT INTERVAL s103 106 LINE VOLTS SIOI FUSE FIOI POWER P105 C FIGURE I Front a...

Page 9: ...in Figure I C Line Power Connections An accessory line cord is furnished with the Model 750 The 3 wire 8 foot 244 cm line cord mates with the rear panel receptacle p Ol An extra line cord can be order...

Page 10: ...SIDE CAUTION TURN OFF POWER TO THE MODEL 750 AND MEASURING INSTRUMENT BEFORE INSTALLING OR REMOVING PLUG IN CARD IF I O B IS NOT USED MAKE CERTAIN THE COVER PLATE IS INSTALLED TO PREVENT THE POSSIBILI...

Page 11: ...in Figure 4 Be certain the tray is aligned so that the metal tab is in the front 4 Lift and fold out the top two layers of paper This provides a leader for load ing the tape in the print mechanism 5...

Page 12: ...SLIDE PANEL TO THE LEFT SO THAT TAB CLEARS PULL HANDLE FIGURE 3 How to Open the Front Panel to Access the Mechanism ROLL PAPER PAPER EXITS MECHANISM REAR PANEL FRONT PANEL FAN FOLD PAPER PAPER TRAY SI...

Page 13: ...and into printer mechanism as shown in Figure 5 6 Depress PAPER FEED pushbutton until printer begins to pull paper through mech ansim 7 As the paper appears at the top of printer guide the paper under...

Page 14: ...and from under hammer e Separate the new ribbon spools and lay them on a flat surface with their finger side down f Refer to Figure 6 and ensure that the new ribbon is properly threaded on the spools...

Page 15: ...either of two sources I Internal print interval 2 External Source When the switch is released the printer can be activated only by MANUAL PRINT d How to Activate the Printer Manually The MANUAL PRINT...

Page 16: ...provides a 50 pin Card edge connector for I O A This connector may be used with Model 7501 or Model 7502 Plug In Cards Special interfacing situations where non Keithley instruments are used may requi...

Page 17: ...illiamperes See Figure 7 for timing considerations 3 RED Pin 44 This input requires a Logic 0 to cause the Model 750 to print in red This feature may be used to indicate an overload condition on the d...

Page 18: ...INES SEC I I 375ms I I I_ 325ms I I DATA HOLD I I I EOP FIGURE 7 Timing For External Print Command MAXIMUM PRINT RATE 2 5 LINES SEC II EXT PRINT 400ms w I PIG DATA I 350ms 1 I 25ms FIGURE 8 Timing For...

Page 19: ...01 cards b Input Signals at l O 6 See Table 3 4 I INHIBIT Pin 4 This input requires a Logic 0 to inhibit printing of data columns 15 through 18 Sinking current for Logic 0 is 2 6 milliamperes CONTINUO...

Page 20: ...3 MANUAL PRINT Pin 14 This output provides a Logic 0 to Logic I transition when MANUAL PRINT pushbutton is depressed This output has a loading factor of 8 TTL inputs 4 15V Pin 1 This output provides...

Page 21: ...nds on the setting of the PIC switch SlO2 The timing for this output is shown in Figure 8 TABLE 3 5 Characters on Keithlev Custom Printer Drum Code I Column Number 8 4 2 l j 18 17 16 15 14 13 12 11 IO...

Page 22: ...CTION 3 INSTRUCTION MANUAL Model 750 Printer ROL FAI AF D ER PAPER CAUTION LINE VOLTAGE IS A SHOCK HAZARD WHEN TOP COVER IS REMOVED FIGURE 10 Top View of Chassis Showing Roll and Fanfold Paper Install...

Page 23: ...diqits 1 7501 616 6162 I Model 616 Digital Electrometer 3 l 2 digits Model 6162 Isolated Outout Control I 7502 I General purpose I I 4 2 MODEL 7503 PRINTER CLOCK This accessory plug in is a real time...

Page 24: ...SECTION 4 INSTRUCTION MANUAL Model 750 Printer FIGURE 11 Model 7503 Clock FIGURE 12 Model 7504 Sequence Counter 4 2...

Page 25: ...IC logic will enable the 15 counter after passing through the ribbon shift logic If red print is enabled the PIC will be delayed by 25 milliseconds while the ribbon shift changes the ribbon color befo...

Page 26: ...R l I COLUMN N INPUT DATA HAMMER DRIVER TIMING MOTOR PRINTING J OFF HEAD RESET L I HAMMER 4 COLUMN STROBE PRINT ENABLE 13 15 4 COUNTER PIG END OF PRINT END OF PRINT i I I I 1 I t I 4EOP 1 COLUMNS I PR...

Page 27: ...chanism 4 Hold the pack so that the leader is pointing away from the printer and slide the tray into the tape drawer When properly installed tray should be just behind the front panel the front end of...

Page 28: ...om shafts 4 Remove old ribbon from feed guides and from under hammer 5 Separate the new ribbon spools and lay them on a flat surface with their finger side down 6 Refer to Figure 6 and ensure that the...

Page 29: ...el 3 Disconnect the card edge connector J203 from the Mother Board PC 378 4 Loosen and remove four Phillips Head screws located on the base of the roll paper holder as shown in Figure I4 i t D TempoiI...

Page 30: ...as shown in Figure 16 There should be enough slack in all interconnecting cables to allow the connections to remain intact 6 To completely remove the Mother board detach all connectors from the board...

Page 31: ...INSTRUCTION MANUAL Model750 Printer SECTION 6 FIGURE 15 Assembly of Chassis J106 Q J 04 ioJ J103 FIGURE 16 Mother Board Assembly AA 6 5...

Page 32: ...by authorized factory repair facilities I Set the Line Voltage switch to the appropriate position 2 Check the fuse for proper rating 3 Set the Model 750 to STANDBY mode 4 Partially remove the Mother...

Page 33: ...r Timing Pulse 375ms interval shaper circuit faulty Test Point G STANDBY 18ms high Ims low Ul13 faulty timing pulse train pulse shaper circuit faulty Test Poing H DEPRESS PRINT Above Pulse Train for U...

Page 34: ...integrity of the chassis to earth ground connection only a Keithley part number CO 7 line cord should be used for replacement If a different line cord is used ensure that the wiring polarity is the s...

Page 35: ...ption d Circuit Designation if applicable e Keithley Part Number 7 3 SCHEMATICS a No 27226E Logic and Power Supply 378 Describes the printer controls logic and power supply b No 27227E Multiplex Drive...

Page 36: ...6 lo4 0 01 nF 16v CerD CENLB 16 104 0 01 uF 16v CerD CENLB u1 16 lo4 0 01 pF l6v CerD CENLB u1 16 lo4 0 01 uF 6v CerD 0 01 pF 6v CerD 0 01 pF 6v CerD 0 01 pF I V CerD CENLB 16 104 CENLB u1 16 lo4 CENL...

Page 37: ...104 DIODES Logic Power Supply C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C 238 O OlM C...

Page 38: ...anism __ 4 pin MOLEX 2139 4 cs 287 4 I 2 pin MOLEX 2139 2 CS 275 I Not Used __ Not Used __ Part of 378 _ TRANSISTORS Schematic 27226E Logic Power Supply 378 Circuit Mfr Mfr Keithley Desig Description...

Page 39: ...Comp A B A B A B A B A B A B A B A B IRC IRC A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B Not Used 3 Ykn IO 0 25W Comp 18 2kn IO 0 25W Comp A...

Page 40: ...5 47 7 VF T450 CB 472 IO CB 472 IO CB 472 10 CB 103 10 CB 472 10 CB l51 10 CB lO3 IO CB 472 10 CB 472 10 CB 472 10 FR IO l 5n RS 5 l5Ofi CB 33l 10 CB 33l 10 R 76 4 7K R 76 4 7K 76 821 1 R 76 22K R 76...

Page 41: ...t 14 pin DIP TEXAS Dual It Input NAND gate I4 pin D IP TEXAS Positive NAND Gates Quad 2 Input I4 pin DIP TEXAS Hex Buffer Driver I4 pin DIP TEXAS Hex Inverters I4 pin DIPS TEXAS Positive NAND Gates Qu...

Page 42: ...S SN75452BP TTL 8 pin DIP TEXAS SN75452BP TTL 8 pin DIP TEXAS SN75452BP TTL 8 pin DIP TEXAS SN75452BP MOT MOT MOT MOT MOT MOT MOT MOT MOT TEXAS TEXAS TEXAS SIG SIG SIG TEXAS TEXAS TEXAS TEXAS TEXAS MC...

Page 43: ...Kl6 103 C 238 OlM 808000Z5R0102K C 64 ool 808000Z5R0102K C 64 001 808000Z5R0102K C 64 OOIM 808000Z5R0102K C 64 oolh 808000Z5R0102K C 64 001 8131050651334 C 237 33M TSDl20106A C 204 IOM UKl6 103 C 238...

Page 44: ...0K CB l53 10 R 76 150K R511 R512 R513 R514 R5l5 CB 153 10 R 76 150K CB 106 10 R 76 IOM CB 103 10 R 76 IOK CB 103 10 R 76 IOK CB 103 10 R 76 IOK R516 R517 R518 R519 R52 0 CB 103 10 R 76 IOK CB 472 10 R...

Page 45: ...Quad Z Input OR Gate TTL 14 pin DIP NAT Bistable Latches 16 pin DIP TEXAS Bistable Latches 16 pin DIP TEXAS Bistable Latches 16 pin DIP TEXAS Bistable Latches 16 pin DIP TEXAS Positive NAND Gates TEX...

Page 46: ...ONNECTORS Circuit Mfr Mfr Keithley Desig Description Code Desig Part No J601 Not Used __ _ _ J602 Receptacle 50 pins Mates with CS 271 AMP 205211 1 cs 269 601 Card edge part of PC 385 __ P602 Not Used...

Page 47: ...TS Circuit Mfr Mfr Keithley Desig Description Code Desig Part No 60 I Positive NAND Gates Quad 2 Input l4 pin DIP TEXAS SN7400N IC 38 602 Decade Counters I4 Pin DIP TEXAS SN7490N IC 37 U603 Decade Cou...

Page 48: ...Erie Technological Products Inc Erie PA 16512 Fairchild Camera Instrument Corp Mountain View CA 94043 ABREV FUSE GE KEMET KI MOLEX MON MOT NAT OHM RCA s c SEIKO SIG TEXAS facturers NAME AND ADDRESS Bu...

Page 49: ...0 f D kl 0 N 1...

Page 50: ...7 1 j i j i I i t I i III IL 1 c I I Ilr l I I...

Page 51: ......

Page 52: ...rough W504 and W505 through W508 Clock Control Feature The Model 7503 can be set to enable the Print Command on the Model 750 at specific intervals When the Control Min Switch S503 is set to I the pri...

Page 53: ...INSTRUCTION MANUAL Model 750 Printer FIGURE 18 Controls and Modifications to Model 7503 A 2 AA...

Page 54: ...the print out is approximately I hour before the actual time 3 Depress and release MANUAL PRINT to obtain a printout of the time If the time print out runs past the actual time to be set continue to...

Page 55: ...aph a 5 Depress RUN NOTE The Model 750 will print the time HH MM and data up to 50 channels if the Model 750 is used in a 50 channel Datalogger system every IO minutes The Model 750 printer motor is t...

Page 56: ...INSTRUCTION MANUAL Model 750 Printer FIGURE 21 Component Layout of PC 374 AA A 5...

Page 57: ...IBIT EOP PIG I I I TIME SET BCD COLUMNS I 2 4 v v t i 8 CONTROL MIN 1 t I I SWITCH 1 ILVUI I Iv CONT CONT CONTROL r i I I T SINGLE 4 TIME PRINT MULTI c TIME C PRINT ALLOW STDBY INHIBIT MOTOR OFF FIGUR...

Page 58: ...rint Block and the time will be printed with every print cycle The EOP signal will re set the Multi Time Print Block after the Manual Print or Clock Set pushbuttons are re leased When in the 2 minute...

Page 59: ...on rear panel See Figure 23 TABLE A 3 Pin Identification For J502 Pin 1 FUNCT i 11 Pin 1 FUNCT I 2 2 65 9 IO 11 1 I4 I5 16 17 18 19 20 21 22 23 24 25 N C N C INHIBIT 2 N C 12 2 12 4 12 8 N C N C PIG...

Page 60: ...is at a a logic low time changes will not be passed on to the Printer Only after the F F is reset and set again will the time be printed This input is not compatible with standard TTL outputs lnstant...

Page 61: ...ctor J503 for connection to a seven segment LED display not furnished The connector is a l6 pin DIP receptacle The mating connector is a 16 pin DIP plug See Figure 18 Vhis part is manufactured by Circ...

Page 62: ...NOTE Each time a print command occurs the Model 7504 counter circuit advances by one count When the counter circuit total equals the preset total as set by the rotary switches the Model 750 is placed...

Page 63: ...INSTRUCTION MANUAL Model 750 Printer ROTARY SWITCHES FIGURE 24 Model 7504 Controls and Connectors B 2 AA...

Page 64: ...INSTRUCTION MANUAL Model 750 Prinler FIGURE 25 Diagram of Model 750 7504 Operation...

Page 65: ...FF 1 RESET COUNT COUNT COUNT COUNT COUNT COUNT COUNT COUNT 1 1 IO IO 100 100 1000 1000 t TENS SWITCH COMPARATOK HUNDREDS SWITCH COMPARATOR I THOUSANDS COMPARATOR SWITCH I BCD COUNT I REMOTE STANDBY FI...

Page 66: ...ter for new cycle 9 TTL loads COM Pin II 22 43 5V 100 mA Pin 36 Circuit Operation See Figure 26 Printer in Cycle PIG are applied to the first of 4 binary counters Count I The out put of Count I is app...

Page 67: ...INSTRUCTION MANUAL Model 750 Printer FIGURE 27 Component Layout of Model 7504 PC 385...

Page 68: ...tercon nect Cables Model 7021 2 or 7O2l IO This connector is useful for Scanner Printer data logging applications The connector is designated as P702 Printer Interface Signals When Installed at I O A...

Page 69: ...INSTRUCTION MANUAL Model 750 Printer MODEL 7021 2 FIGURE 28 Model 7502 General Purpose Printer Input Interface c 2 AA...

Page 70: ...PRINTER Interface Signals For I O 6 Pin F rnrtinn 11 1 Frtnrtinn Pin 1 15 16 17 18 19 l3 DP l3 DP 20 INHIBIT INHIBIT 21 DELAY ALLOW DELAY ALLOW 22 REMOTE STANDBY REMOTE STANDBY 23 EOP EOP 24 16 2 16...

Page 71: ...II 4 Identification of Scanner Unit ID 8 II 8 Identification of Scanner Unit N C N C REMOTE CLOCK PIG x2 Output to scanner REMOTE CLOCK PRCHDO COM Enables PRCHAD Lines PRCHAD I 12 l PResent CHannel A...

Page 72: ...ntrol panel Top Cover Bottom Cover assembly Cover less tilt bail Foot Molding Rubber Foot Left Side extrusion Left Side Dress Panel Handle Hardware for handle Screw phillips 6 32 x 318 Kep nut 6 32 Ri...

Page 73: ...H 18 LEFT SIDE 26687C 6 32 x l 4 SCREW TOP COVER 26686c 6 32 x 5 16 SC EW 9 CONTROL PANEL OVERLAY 26672A RIGHT SIDE 26683 KNOB 2576 FOOT MOLDING FRONT DOOR BOTTOM 243228 750 168 COVER ALSO FE 6 267068...

Page 74: ...an appropriate Keithley rack mounting kit The Model 750 chassis is designated as style 0 with a nominal 7 height TABLE E l Summary of Rack Mounting Configurations Pictorial View Configuration vi Pane...

Page 75: ...ndle 5 Next loosen but do not remove the three IO 32 Phillips head screws holding the side dress panels near the front of the instrument 6 Slide the side dress panel left side toward the rear of the i...

Page 76: ...ndard IV inch rack The consists of two angle brackets a blank Model 1011 can be used to mount instruments panel and other miscellaneous hardware of II or 14 depth arts tern lo 22 23 24 25 26 27 28 29...

Page 77: ...oward the rear of the instrument to re move 5 Attach an angle bracket Item 22 to the left side of the instrument Use three 8 32 Phillips screws Item 27 in place of the original hardware For 14 long in...

Page 78: ...The Model 1012 Rack Mounting Kit can be used to mount instruments of II inch 279 mm or 14 inch 356 mm depth The user should decide the position of the instrument to be rack mounted The Assembly Instru...

Page 79: ...ews Item 29 5 Reinstall the side plate on instrument A using original screws 6 Remove 3 screws Item 8 on instrument B remove the side plate and install the mounting plate Item 23 behind the corner pla...

Page 80: ...of II inch 279 mm or I4 inch 356 mm depth The user should decide the position of the instrument to be rack mounted The Assembly Instructions refer to instruments positioned as shown in Figure 33 and...

Page 81: ...unting instruments having the same depth one screw Item 32 one spacer Item 281 and one kep nut Item 36 are required to secure the two instruments together When mounting instruments of different depth...

Page 82: ...INSTRUCTION MANUAL Model 750 Printer L 0 0 0 BLANK PANEL FIGURE 33 Model 1014 Rack Mounting Kit AA E 9...

Page 83: ...user should decide the position of the instrument to be rack mounted The Assembly Instructions refer to instruments positioned as shown in Figure 34 and identified as instrument A and B tern IO 22 23...

Page 84: ...s Item 8 on instrument B remove the side pla te Item 21 5 Fasten 3 spindles Item 33 to side plate Item 21 using three 8 32 x 3 8 Phillips flat head screws Item 30 6 Reinstall the side plate on instrum...

Page 85: ...INSTRUCTION MANUAL Model 750 Printer L 0 0 0 BLANK PANEL 0 FIGURE 34 Model 1015 Rack Mounting Kit...

Page 86: ...of 11 inch 279 mm or I4 inch 356 mm depth The user should decide the position of the instrument to be rack mounted The Assembly instructions refer to instruments positioned as shown in Figure 35 and...

Page 87: ...nd C using original screws 7 Position the instruments A and B so that the mounting plate engages the spindle 8 When mounting instruments having the same depth one screw Item 30 one spacer Item 26 and...

Page 88: ...INSTRUCTION MANUAL Model 750 Printer FIGURE 35 Model IOlb Rack Mounting Kit AA E 15...

Page 89: ...INSTRUCTION MANUAL Model 750 Printer End of Appendix E This page has been intentionally left blank 16 AA...

Page 90: ...TION MANUAL Model 750 Printer DS30l APPENDIX F COMPONENT LAYOUTS TABLE 7 l Components Located on PC 380 Circuit Designations DS30l J3Ol J302 4301 R301 R302 S3Ol J302 J3Ol F IGURE 36 mponent Layout K 3...

Page 91: ...D 4 RI32 PI05 RI33 106 B 5 RI34 QIOI IK 5 RI35 Q102 6 RI36 g2 L 5 R137 L 4 RI38 Q105 L 5 RI39 QlO6 G 6 RI40 Q107 F 7 RI41 QlO8 A 7 RI42 elsewhere on the chassis Circuit Location Desia Desig Code A 6...

Page 92: ...a z I 0 LL Lu P v m a...

Page 93: ...7 c...

Page 94: ...7 I I I I N x y m 4 c I N I NJ I t In Lc r m...

Page 95: ......

Page 96: ...iL L g r 1 1 I...

Page 97: ...e signal source El List the positions of c controls and switches on both front and rear panels of the instrument El 4 Describe input signal source levels frequencies etc El List and describe all cable...

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