Home

Keithley -

Contents

1. 225 52 22 one 5 f EE s 30 8 4 82208 SON ER 573 68 C3 22 200 zoin soin zan In zors o 4 L 90 2 5 2 44 5 o 600 0 lt o D 5 108 0 j L3 1 30 8 8 66 77 FIRM n 7 ARY VEM d E EIL CAU 133 SCHEM 8 O PART lA 85 Ai iS 192 5 Ral MEL 737771 Z Pees Sf tas zz wane Cus sas 83 wA 5 3 275 ADDED RF 25 EI E E 1 4 23 i 76 299 84 36 42 RF S2 zem DF 722 2487 49 aes 43 7 24 0237 1 LIDI 44 75 RE 34 CK DS OS 1623 123 1444 25 27 2 34 10 1 O 237 LR 1322221 Jeor E3 5D 7 0408 1 5 517 1710081 ___ jeo9 jecrsss 7807 Ds ___ 184 CS 22 298 dus 1 5 _
2. Scanning Examples Front Panel Clock Operation Detailed Front Panel Controls Description Detailed Rear Panel Description a Front Panel Programs E NE ai Program Digital A E IO d RO ER EENE Program 1 Data Format au acr odd dU d aea CR OR CR arg Program 2 Relay Settle era ra cd ERR FRE TE Program 3 Set IEEE Primary Program 4 Save Relay Set Up du 555 Program 5 Recall Relay Set UD RE ERRARE RAO RO EUR P Program 6 Pole Configuration Matrix Mode eT eee m Program 7 Sot Alarm Time Program 8 Diagnostic Self Test Program 90 Stand Alone aad Program ob aao Program 92 SlaVe Program 93 AUS RU A E S REA CER GARA AUR REATO RO dE a s Program 94 Clear cian ieee OR m RR Rr cR ut Program 99 8 ui NE saus CHER E QUERER IER E REPE CERE MERE SECTION 3 IEEE BUS OPERATION introdu
3. 8 3 21 14 H o m 306 v 011552 SALON 304 1 39vd 336 9 S21LVW3H2S 335 310N 6S04 21A QHv2 79401130 HLIM 31V SHOL23NNO2 3S3H1 aes oe AS INOZ a 39vd 335 9 D 6 3NOZ 2 39vd 335 OP 8 2 39 4 335 GH 3NOZ z 39 4 335 v 3NOZ af 1 9 335 1 ______ l LA r C r 2 39wd 336 3NOZ 2 33 5 63 S3LYW ee 0 9 V 3NOZ et ty wita 1 8 Eau sage ES jO J P s __ T L1 141 1 T eS ee H 9 3NOZ ie 2 35vd 3356 65 1 99 5 p Se BY U pp L ES Rs A 161 ZZ Su xa 24 208 2 pep be deel 3NOZ o Od 0806 Op Oc OZ OI x 08 0 09 G
4. 3 8 Hierarchy of Command Execution 4 4 4 39 SRO Commands and Conditions 3 10 Digital 1 0 Port Contact Pin 5 1 Fuse Replacement BAG 9126 Ra n 5 2 Fuse Replacement 5mm Size Y a ed pa ea qu qp eae esa Voltage Selection RN SY oS MARG ER RE AG ERE UA RR NUR 5 4 Recommended Test 55 Power Supply Checks sa R Edd eed P Rx sma 5 6 Digital Circuitry CHECKS ____________________________ 5 7 Display Board Checks a d does ets 5 8 Interconnect Board bd ade 5 9 Model 706 Static Sensitive 6 1 Model 706 Recommended Spare Parts 161 6 2 Index of Model 706 Schematics and Component 63 Display Board Parts List ______________ _______________ 64 Mother Board Parts List
5. RO TR 6 5 Diditall O Board Parts List ioo oec RR OC 66 interconnect Board Parts sex does kk CR ES RACE habe copies OC GO e OP ar Ke 6 7 Model 706 Mechanical Paris 2 co bi see Ex ew ines steel eens Figure 1 1 706 SECTION 1 GENERAL INFORMATION 1 1 INTRODUCTION The Model 706 is an IEEE 488 bus compatible scanner that can accommodate ten plug in scanner cards With ten scan ner cards installed up to 100 2 pole channels can be on the same IEEE address Using four additional Model 706s in a daisy chain configuration up to 500 2 pole channels can be on the same IEEE address The Model 706 scanner adheres to standard EEE 488 interface bus protocol This enables the Model 706 to be incorporated into any measurement that uses programmed control through the IEEE 488 bus The front panel controls are clearly marked and easy to use These controls serve several functions such as opening a selected channel closing the channel scanning between a selectable first and last channel selecting scan rate and mode There are 15 internal programs that are accessible from the front panel The programs can select primary ad dress settling time store a relay set up recall the stored relay set up control the digital 1 0 port switch from International to American date format start or stop a scan sequence select 1 2 or 4 pole measu
6. on U105 pin 37 U120 pin 21 U120 pins 2 9 Required Condition 5V 5 4 75V to U105 pin 2 4V 20 3 2V to 4 8V MPU HALT line U105 pin 6 4V 20 3 2V to 4 8V MPU NMI line U105 pin 40 Turn 706 off then RESET line pin 40 remains LO 1MHz Squarewave 100usec negative going pulses variable intervals to 4V 2ms Pulses Voltages referenced to digital common 5V digital supply for about 1 second after power on then goes HI Also check for system clock on U103 U120 U102 and U118 pin 11 line Display and NVRAM data Table 5 7 Display Board Checks Activate front panel PROGRAM 8 J P1010 pins 9 and 14 U203 pin 1 U203 pin 8 5 25V Step Item Component Required Condition 5V 5 4 75V to Check to see that all LEDs are functional Check that all annunciators are functional If LO check per Table 5 5 Update Data Clock 5 7 5 5 6 Interconnect Board Checks Check the interconnect board per Table 5 8 5 6 BATTERY CHARGE The battery backed up functions Time Date Interval etc are powered by BT101 and its associated circuitry when the Model 706 is turned off The retention time of the battery backed up functions and data is typically one month with the unit turned off To fully charge the battery it takes approx imately two weeks 8 hours a day
7. END LINE prefix ENTER 718 A END Obtains data string LINE 60 DISP A END LINE 70 END END LINE When the RUN key is pressed the alarm time is set for 2 15 pm The alarm time is also displayed on the 85 CRT Displays data string End of program NOTE When the format of the programmed time is not the full six digits hh mm ss the Model 706 trun cates the time to what is programmed If in this example the last two zeroes were left out the time would be programmed for 14 minutes 15 seconds AM The colons between the hours minutes and seconds are optional 18 Reset R Programming Example Enter the following statements The letter is the command that 5 wwe 706 to reset conditions The reset conditions are all channels open and display the specified first channel R1 thru R75 clears the corresponding buffer location into the HP 85 to reset the 706 When the END LINE key is pressed the second time the Aodel 706 goes to the reset condition REMOTE 718 END LINE OUTPUT 718 RX END LINE NOTE The first channel was set to 5 in a previous ex ample When the END LINE key is pressed the second time the Model 706 should display the following 19 Set Time The letter is the command to program the 706 to Transmits alarm time with programs the Model set the time The format is as follows Shh mm ss
8. END LINE When END LINE is pressed the second time the Model 706 opens channel 7 To display 7 and verify it is open type the following statement into the HP 85 OUTPUT 718 B7X END LINE NOTE The number of channels for a particular con figuration is determined by the number of poles and Model 706 units daisy chained together 15 1 O Port O The letter is the port command controls the status of the eight output bits on the display I O port on the rear panel of the Model 706 The format for the 1 port command is as follows Onnn where Port Command 0 to 377 Converting the octal base of to correspond to base 2 eight outputs for the digital 1 outputs is as follows 3 23 nnn nnnnnnnn if 0 the bit is low octal binary if 1 the bit is high Example 077 00111111 Octal Binary The 1 0 port command consists of the ASCII character followed by the decimal number that sets the control bits Upon power up or after a DCL or SDC command the eight output lines are set low Table 3 10 lists all digital port conact pin assignments Figure 3 5 shows the contact pin locations The maximum current drawn from the digial I O port is 350mA This includes the relay card and the output The current limiting resistor is 680 13579 11 13 15 17 19 EVEN NUMBERED PINS ARE ON OTHER SIDE OF BOARD Figure 3 5 Digital 1 O Port Pin Assignment Table 3 10 Di
9. NOTE In the inspect mode the relays are not closed they are just examined Program 93 is a convenient feature that allows the user to ex amine the closed channels of a relay set up If Program 93 is not used and the user needs to the relay set up the user must go through all the programmed channels or cross points With Program 93 activated the user can display the closed channels or crosspoints of the set up To activate and then deactivate Program 93 use the following procedure 1 Press PRGM 9 3 This step activates the inspect mode The inspect mode can be activated regardless except slave mode of what mode the Model 706 was in Note on the Model 706 display that the middle decimal point is blinking This signifies that the inspect mode has been ac tivated The following is displayed for approximately 0 5 seconds and then reverts to previous display In 5 x Inspect 2 Press PRGM 9 3 While the inspect mode is activated pressing PRGM 9 3 takes the Model 706 out of the in spect mode The following is displayed for approximately 0 5 seconds and then reverts to the previous display out Get out Program 93 acts as a toggle When the Model 706 is not in the inspect mode pressing PRGM 9 3 activates the inspect mode While the Model 706 is in the inspect mode pressing PRGM 9 3 takes the Model 706 out of the inspect mode Using Program 4 and 5 in conjunction with Program 93 a
10. 190 191 195 196 200 126 130 131 135 136 140 141 145 146 150 The alarm time is now set to 2 45 The alarm pulse will appear at the ALARM SERIAL IN connector everyday at 2 45 until it is reprogrammed power is shut off or front panel Program 99 is activated To verify that the alarm time was set to 2 45 pm by the preceding example press PRGM 7 This action selects Pro gram 7 and displays the previously stored alarm time Upon power up or upon activating front panel Program 99 the Model 706 sets the alarm time to 00 00 00 When the alarm time is set for 00 00 00 no output pulse appears at the ALARM SERIAL IN connector 2 9 9 Program 8 Diagnostic Seif Test Program 8 is used to run a test on the ROM RAM circuitry and also to test the front panel LEDs This test is also per formed in the power up sequence If it is desired to run the test without shutting power off to the unit Program 8 can be used For example if the user needs to run the self test but does not want to reset the alarm time alarm time is not bat tery backed up then Program 8 can be used This way the alarm time is not reset and the Model 706 RAM ROM and front panel LEDs are tested Use the following procedure to activate Program 8 1 Press PRGM Selects program mode 2 Press 8 Initiates the Program 8 test sequence Once step 2 is completed the 706 performs the follow ing sequence Fir
11. Enter the following statements into the HP 85 to display the date REMOTE 718 END LINE OUTPUT 718 D3X END LINE When END LINE is pressed the second time the Model 706 displays the date 5 Set Date Format E The letter E is the command to program the Model 706 to set the date format for american date format or the inter national date format The two formats are as follows American Date Format mm dd International Date Format dd mm Programming Example Enter the following statements into the HP 85 to set the international date format REMOTE 718 END LINE OUTPUT 718 D3X END LINE OUTPUT 718 E1X END LINE When END LINE is pressed the third time the Model 706 is programmed for the international date format NOTE Do not place the set date format E command after another command in the same string The Model 706 will process the E command as an ex ponent for scientific notation and create an in valid condition Use the E command in a separate string Use the following statement to return the Model 706 to the display channel mode OUTPUT 718 DOX END LINE 6 Set First Channel F The letter F is the command to program a specific channel as the first channel Any channel within the limits of the specified channels can be programmed as the first chan nel The format for the set first channel command is as follows Fnnnn where F Set first channel command n Nu
12. Maintenance should be performed by qualified service personnel Before performing any maintenance disconnect the line cord and all test cables TABLE OF CONTENTS Paragraph Title Page m wh gt gt h O gt 2 1 2 2 2 2 1 2 2 2 SECTION 1 GENERAL INFORMATION Introduction UR Fa Model 706 Featur S WEE VR a RAE ss Warranty Information gt QW pas an Manual Addenda Safety Symbolsand TEMS scce aoc ac bind ARR RR RR AR E eR Unpacking and REEL WERE LAUR CH d di Ac d Specifications EEE E E Optional a 1 2 Repacking for ____ ______________ ___ _ 1 3 SECTION 2 OPERATION Qe dafs Preparation Tor USB a Correct Line Voltages u iain BUR ee Se Plug In Card Installation PoWerUB 6622526440 urusa ___ _______ _ _ __________ __ Environmental Condition Operating Front Panel baga AES KR Rear Panel Description Basic Front Panel Operation
13. Alt 60092 4 5 0 2 5 USE 2303 4 d Goa vop 5 6004 5 PA ON Mo eae utesp 2 3 SEE SCHEMATIC 22 CLOCK 706 176 20 82 id UI25D 420 PIN 17 7 4 V 2 VI2OPIN 120 DATA ENABLE 1 PAGE 2 ZCAE LATCH PAGE 2 20NE 4 i LATCH D 12 7 2 EE m pe DATA 1126 uL 0122 5 9 z 12 4A 7415125 4050 2 i DATA UI2O PIN OCK ENABLE Uot ale 2 ZONE 4 Liase BUS BuFTE O Sja BUFFER 46 CLOCK 270 5 Q Pp D NC Shay UI20 PIN IO 560 UIZOPIN 180 60 2 10 A 2A J 2 70NE 4 PAGE e ZONE ES GND STROSLINE Y Q 14124700 5 WV i FORM 2518 D F 1022 Figure 6 7 Mother Board Schematic Diagram Dwg No 706 106 sheet 1 of 2 6 21 6 22 vco ec9 3894S 901 907 peog 19430 77 9 o1nBij 230239vd H 4 He i prs N fal 2 AV os 01682 91 6024 Zr duvOH iy 335 GENET RARE Oldid SALVAN lt voor eooie p 0017 _ 5 146014
14. B2 105203 C2 NOTE 105204 C2 INSTALL THE CABLE 05205 D2 ASSEMBLY ON SIDE 1065206 p2 ___ 05207 E PL 67 05208 Et 22 25208 THRY 252 7 4 F Figure 6 1 Display Board Component Location Drawing Dwg 706 110 21 ea ______ ______ SED ON COMPONENT LAYOUT sow irj o DISPLAY BOARD wmm ze e ____ 05209 0520 REQUIEED N 0522 777 65213 2 __ 05214 C 10525 D3 2 67 ING DETAIL 03 06627 21 Reap lor Id ees ee m ees 2 POW t4 Cem 02 8202 FU po S20 B2 B2 6 2 Cj od BEEN BE RE 24 Oto 2077 22 v 29 2oeu wre 97 u i 12 6 24 90451 2530 N383S poe zoe IC 059 OB Figure 6 2 Digital 1 O Board Component Location Drawing Dwg No 706 170 6 10 1 9 11 9 L 12895 001 904 Buiweiq u0n8207 3ueuoduio pipog 49410 9 2 30 H 9 2 s E 992 ww Caa BNIA
15. LOCKING 5 HANDLES Figure 2 1 Scanner Card installation MODEL 706 REAR PANEL SCANNER CARD INSTALLATION 2 3 POWER UP When the Model 706 is turned on the instrument goes through a power up sequence that is outlined as follows immediately after turing on the Model 706 via the power switch the display indicates the following for a number of seconds B B B B B B 1 This is a display test The operator can note inoperative display segments by comparing the Model 706 s display with the figure above 2 In addition the pushbutton and the TALK LISTEN and REMOTE indicators turn on All indicators turn on simultaneously if operating correctly After the display test is complete the Model 706 displays the software revision level for approximately 0 5 seconds The following is an example of software revision level A1 2 2 After the software revision level is displayed the Model 706 displays the primary address of the instrument for approx imately 0 5 seconds The primary address of the Model 706 is factory set at 18 18 During the display test the Model 706 performs digital self test of the RAM circuitry and a cyclic redundancy check CRC of the ROM circuitry If a problem is found by these tests the 706 displays a diagnostic number This number and its meaning is described in detail in Section 5 After all the displays and test of the power up sequence the Model 706 comes to
16. Model 706 Front Panel Figure 5 3 Model 706 Top View 5 5 TROUBLESHOOTING The troubleshooting instructions contained this section intended for qualified personnel having a basic understanding of analog and digital circuitry The individual should also be experienced at using typical electronic test equipment as well as ordinary troubleshooting procedures The information presented here has been written to assist in isolating a defec tive circuit or circuit section isolation of the specific compo nent is left to the technician 5 5 1 Recommended Test Equipment The recommended test equipment to troubleshoot the Model 706 is listed in Table 5 4 The test equipment may vary but the specifications must be at least equal to the specifications listed in Table 5 4 Table 5 4 Recommended Test Equipment Equipment Use Five function DMM with Power supply and DC 0 05 basic DC accuracy voltage checks contin Keithley Model 179A or uity logic levels equivalent Dual trace triggered sweep oscilloscope DC to 20MHz bandwidth Waveform checks 5 5 2 Digital Self Test Upon power up the Model 706 performs a number of tests and displays several messages These tests and messages are explained in paragraph 2 3 The Model 706 also upon power up and upon activating Program 99 performs a digital self test on the RAM circuitry and a cyclic redundancy check CRC on the ROM circuitry If the
17. Operation of the Model 706 is divided into two sections front panel operation and IEEE 488 bus operation IEEE bus opera tion is located in Section 3 This section contains the follow ing information Preparation for use Power Up Environmental Conditions eFront and Rear Panels Description eExamples of Scanning Front Panel Programs 2 2 PREPARATION FOR USE 2 2 1 Correct Line Voltage Connect the Model 706 to the proper power receptacle refer to Table 2 1 For fuse replacement or line voltage setting refer to Section 5 Maintenance WARNING Ground the instrument through a properly earth grounded receptacle before opera tion Failure to ground the instrument can result in severe injury or death in the event of a short circuit or malfunction 2 2 2 Plug In Card Scanner Installation Before operating the Model 706 the appropriate scanner cards must be installed into the mainframe Each scanner card up to 10 cards per the Model 706 mainframe is installed in the appropriate vertical slot in the rear panel of the Model 706 Refer to Figure 2 1 for an overall picture of scanner card installation WARNING To prevent a possible shock hazard turn the instrument off and disconnect the line cord before installing removing any scan ner card 1 To install a scanner card slide the card into the appropriate vertical slot The slots are numbered 1 through 10 Refer to Table 2 2 for slot number channel numbers assignment Fa
18. Press PRGM 6 Press 2 ENTER Press 0 0 5 FIRST Press 0 2 5 LAST Press INTERVAL 0 0 0 5 0 0 ENTER Press CHANNEL RESET Press SINGLE Press START STOP Step Action Refer to paragraph 2 2 2 Selects PROGRAM 6 Selects the 2 pole mode Refer to paragraph 2 9 for more information concerning front panel programs Programs channel 5 as the first channel Programs channel 25 as the last channel Programs the interval time for 0 5 seconds Turns on the CHANNEL LED selects the channel mode for display and resets to the programmed first channel Selects the single scan mode and turns on the SINGLE LED initiates the single scan sequence Table 2 8 Continuous Scan Example Install 10 Model 7056s into slots 1 10 of the Model 706 Select appropriate line voltage and turn on the Model 706 Press PRGM 6 Press 2 ENTER Press 0 0 1 FIRST Press 1 0 0 LAST Press INTERVAL 0 0 0 3 0 0 ENTER Press CHANNEL RESET Press CONTINUOUS Press START STOP Upon the actuation of the START STOP button in step 10 channel 1 is closed and the START STOP LED is turned on Channel 1 remains closed for 0 3 seconds programmed inter val rate and then opens Model 706 advances to the next channel and closes it for the programmed interval rate and then opens it This sequence
19. Programming Example Enter the following statements into the HP 85 keyboard REMOTE 718 END LINE OUTPUT 718 YtX END LINE ENTER 718 t END LINE After END LINE is pressed the first time the Modei 706 is placed in the remote mode After END LINE is pressed the se cond time the terminator is changed to the ASCII character T After END LINE is pressed the third time the HP 85 ceases to operate because it is waiting for the standard terminator sequence The HP 85 may be reset by holding down the SHIFT key and then pressing RESET on the keyboard 3 5 8 Inputs 1 Set Number of Poles A The letter is the command to set the Model 708 into one of the pole configurations or the matrix mode There are three different pole configurations and they are as follows A0 Matrix Mode A1 1 pole Mode A2 2 pole Mode A3 or A4 4 pole Mode Programming Example Enter the following statements into the HP 85 to program the Model 706 into the 4 pole mode REMOTE 718 END LINE OUTPUT 718 A3X END LINE When the END LINE key is pressed the second time the Model 706 is placed in the 4 pole mode To verify the Model 706 is now in the 4 pole mode press PRGM 6 and note the front panel display Press ENTER to return to normal display Programming Example Enter the following statements into the HP 85 to program the Model 706 into the matrix mode REMOTE 718 END LINE OUTPUT 718 0 END LINE When the EN
20. using the RESET button This is the point where we will start the exam ple of Program 5 To recall the stored relay set up use the following procedure 1 Press RESET Reverts instrument to programmed first channel and opens all channels 2 Press PRGM 5 Selects program mode and also Program 5 After the 5 button is pressed the Model 706 the rEL This display indicates that the recall program has been activated The display prompts the user for the specific relay set up that is stored 1 through 75 3 Press 0 1 ENTER Selects relay set up number 1 to be recalled and when ENTER is pressed the set up is recalled After ENTER is pressed the Model 706 recalls relay set up number 1 and displays the channel that was shown previous to pressing PRGM In this case the following is displayed because step 1 reset the display to the program med first channel In order to verify that the stored set up was recalled pro ceed to step 4 4 Press CHANNEL nine times and notice that the odd numbered channels are closed and the even numbered channels are open This shows that the stored relay set up was indeed recalled by Program 5 The factory set values of Program 5 are all channels open and the programmed first and last channels are set to 1 Program 5 also works in the matrix mode refer to paragraph 2 9 13 for an example In the matrix mode of operation pressing the START STOP button displays the Recall displa
21. 1 TO Inthe TO mode Start on Talk talk command initiates the program mode sequence 2 T1 inthe T1 mode Stop on Talk a talk command stops the program mode sequence 3 T2 Inthe T2 mode Start on GET a GET command initi ates the program mode sequence 4 T3 In the T3 mode Stop on GET a GET command stops the program mode sequence 3 18 5 4 inthe T4 mode Start on X an execute command X initiates the program mode sequence 6 5 Inthe T5 mode Stop on X an execute command X stops the program mode sequence 7 16 Inthe T6 mode Start on External an external trigger initiates the program mode sequence 8 7 inthe mode Stop on External an external trigger stops the program mode sequence NOTE The T modes may also be used in the matrix mode to advance through the matrix set up One trigger command sent for every crosspoint Programming the instrument to its default con dition by turning the unit off then on and enter the following statements into the HP 85 keyboard REMOTE 718 END LINE OUTPUT 718 2 END LINE After the END LINE key is pressed the second time the instru ment is placed in the start on GET trigger mode When a GET command is sent by the controller the Mode 706 triggers To send a GET command enter the foliowing statement into the HP 85 TRIGGER 718 END LINE Programming Note if the Model 706 is in the trigger mode
22. 2 9 11 and 2 9 12 activate Program 90 to return the Model 706 to normal operating conditions NOTE To activate Program 90 press PRGM 9 0 The 0 pole mode is the matrix mode Refer to paragraph 2 9 7 for complete details concerning NOTE programming of the different poles Channel 1 is set as the programmed first chan nel If another channel was previously program med as the first or last channel then the F or L will not be displayed upon power up 6 Program the interval time display A Press the INTERVAL button to select interval mode for B Enter the interval time on the display by pressing from r27 the DATA group the desired time within the limits of 000 010 to 999 999 seconds C Press the ENTER button 7 Program the desired scan mode Press the SINGLE or CONTINUOUS button to select one of these two scanning modes To select the step scan mode press the CHANNEL button 8 Press the START STOP button to start the scanning se quence For the step mode press the START STOP but ton each time a single channel is to be scanned The previous steps 1 through 8 show a general procedure to get the Model 706 into a scanning sequence Paragraph 2 5 4 shows how to use the different scan modes how to daisy chain several Model 706s for an extended number of chan nels and how to scan using different scanner cards 2 5 4 Scanning Examples Example 1 Manual Scan Step Scan If it is desired to scan through the pro
23. 3 This step shows the user that the primary address has indeed changed to 22 5 Now that you know how change the primary address back to 18 2 9 5 Program 4 Save Relay Set Up Program 4 is used to save store the present relay set up for future use This program is capable of storing 75 separate relay set ups This means the user can program 75 different relay set ups store the set ups then use the stored set ups when the need arises without reprogramming Program 4 is very useful in a situation where the instrument and or experiment is going to be shut down for a period of time and the user does not want to reprogram the relay set up when power is returned to the unit The program is also helpful when the user has programmed one relay set up and needs to go to another completely different set up without destroying or losing the existing set up In this case it s possi ble to program one relay set up and store it with Program 4 then program a different set up and store it with Program 4 This way the user has both relay set ups stored for further use NOTE The Model 706 can only use one relay set up at a time they cannot be used simultaneously As an example of using Program 4 program the Model 706 for 10 channels with the odd numbered channels closed and the even numbered channels open When the set up is com plete save the set up by using Program 4 Use the following procedures to implement this example 1 Press RESET S
24. 706 160 6 5 Display Board Schematic Diagram Dwg No 705 116 6 6 Digital Board Schematic Diagram Dwg No 706 176 6 7 Mother Board Schematic Diagram Dwg 706 106 6 8 interconnect Board Schematic Diagram Dwg 706 166 LIST OF TABLES Table Title 2 1 Line Voltage Setting pua 2 2 Slot Number Channel Number Assignment 2 3 Power Up Default Conditions Front Panel Operation 24 eka 2 5 RearPanel Description seus cesi wiwa qas __________ ____ __ 245 Step Oca Example seda eris dere Dos noe tun true we b e 2 7 Single Scan Example Ha eee bee eee 2 8 Continuous Scan Example PB EUR ES RR EP 2 9 Required Equipment for Daisy Chain Example 210 Daisy Chain 2 11 Temperature Scan Example iue sese ke km exe ex acer eu e m 2 12 Low Current Scan Example PAESE RUE aea dose ead 2 13 Setting the TIME Race Re 2 44 Setting the Dale ursa sh ___ ___
25. Close Display Channel Alternate Output Pole Mode Date Format Save Recall Reset Port Time Date Settle Time Interval Time Alarm Time Program Mode Trigger Mode Terminator Self Test Digital 1 0 Port A separate edge connector consisting of eight input and eight output lines as well as common and 5VDC Out puts will drive one TTL load Inputs represent one TTL load Mating connector supplied FRONT PANEL PROGRAMS 0 Digital 1 0 1 Date Format Read or change state on digital 1 port Changes date display between MM DD and DD MM Time to output CHANNEL READY pulse after closing relay bus address not programmable from us Stores present relay setup in buffers 1 75 Recalls relay setup in buffers 1 75 1 2 or 4 configuration for scanning 1 pole requires 7056 0 pole for matrix 2 Settle Time 3 IEEE Address 4 Save Setup 5 Recall Setup 6 Poles card 7 Alarm Time Set time for Alarm output pulse repeats daily 8 Self Test Check RAM ROM LEDs 90 Stand Alone Single 706 configuration 91 Master Daisy Chain configuration 92 Slave Daisy Chain configuration 93 Inspect Display closed relays only 94 Clear Clear buffer location 99 Reset Reset battery backup parameters to fac tory values Battery backed up Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentatio
26. I O status port transmitted without prefix 000 G6 Time and date transmitted with AMR INT Thh mm ss Ddd mm where Time in hours minutes and seconds D Date in days and months G7 Time and date transmitted without prefix hh mm dd mm dd G8 Status word transmitted with prefix 706 ADEJKPTG M Y 706 1100000000000 G9 Status word transmitted without a prefix ADEJKPTG M Y 1100000000000 G10 Channel settle time transmitted with prefix Hnnn nnn G11 Channel settle time transmitted without prefix nnn nnn G12 Alarm time transmitted with prefix Qhh mm ss G13 Alarm time transmitted with prefix hh mm ss G14 Interval time transmitted with prefix Wnnn nnn G15 Interval time transmitted without prefix nnn nnn G16 First and last channel numbers transmitted with prefix Fnnnn Lnnnn G17 First and last channel numbers transmitted without prefix nnnn nnnn G18 Previously recalled buffer location relay set up transmitted with prefix Rnn G19 Previously recalled buffer location relay set up transmitted without prefix nn Set Channel Settle Time H The letter H is the command to set the channel settle time The channel settle time is the programmed time each channel has to settle The format for this command is in seconds and is as follows Hnnn nnn 3 21 Programming Example Enter the following statements into the HP 85 to program settle time o
27. O Sy i Y sos V Mososo Y 4 10 8 6 8 5 I 2 i R305A 5V 303A 2 2K s O CR304 D 4 3 4 2 VU D 03038 NOT USED NOT USED bie QA 45 413 2 QO R304A lt R304C 58304682 R304D 8504 5 83046 lt lt R304H 82 82 82 82 82 82 82 82 NOTES O o3 OD 94 95 97 6 98 1 ALL RESISTOR YALUES ARE UNLESS Y 4 OTHERWISE MARKED K KILOHMS M MEGOHMS 5 2 ALL CAPACITOR VALUES IN MICROFARADS e IO 8 12 18 18 6 20 UNLESS OTHERWISE MARKED pF PICOFARADS 3 Vy DENOTES DIGITAL COMMON 4 DENOTES REAR PANEL MOUNTING ALS SEN E 6 HIGHEST SCHEMATIC SCHEMATIC DESIGNATIONS DESIGNATION USED NOT USED AE EL THRU 3007 __________ T Fasor 303 Le DIGITAL 1 0 BOARD s EDO oe pepper p 706 176 B c D H Figure 6 6 Digital Board Schematic Diagram Dwg 706 176 6 19 6 20 e 30 39vd D 901 904 GND i Pog PAGE 2 ZONE G3 1 020 32 J 28 26 PINIO1I O 25 1544151617 2 ZONE Fa 27 29 31 BLU _ BBN BRN 25 Sa SEE 706 166 SNE ENABLE 33 fis 5 5 Be foes Z
28. Programs 3 90 91 and 92 A typical bus set up for controlled operation is shown in Figure 3 1 Generally a system contain one controller and a number of other instruments to which the commands are given Device operation is categorized into three operators controller talker and listener The controller does what its name implies it controls the instruments on the bus The talker sends data while a listener receives data Depending on the type of instrument any particular device can be a talker only a listener only or both a talker and a listener Any given system can have only one active controller but any number of talkers or listeners may be presented up to the hardware limitations of the bus Generally the bus is limited to 15 devices but this number may be reduced if higher than normal data transfer rates are required or if longer than nor mal cables are used Only one device on the bus may be a talker at any given time while several devices can be commanded to listen Before a device can talk or listen it must be appropriately addressed Devices are selected by their primary address Usually each device on the bus has its own primary address so that each device may be addressed individually The primary address of the Model 706 is factory set at 18 The factory set primary ad dress may be changed v a front panel Program 3 For more in formation concerning front panel programs refer to paragraph 2 9 Once a device
29. STEP The step scan mode allows the user to manual ly step through the programmed channels The step scan mode is selected by pressing the channel button programming the interval rate and pressing the START STOP button When the interval rate has been programmed and the user is ready to manually scan the channels press the START STOP button to scan one channel Upon initiating the step scan mode the START STOP LED turns on the presently displayed channel is closed for the programmed interval rate the channel is then opened and the START STOP LED turns off At this point the Mode 706 advances to the next channel and then stops To scan the next channel press the START STOP but ton and the Model 706 repeats the same sequence with the presently displayed channel 7 CLOCK The CLOCK group of buttons consist of the TIME and DATE buttons The clock time and date con tinues to run after the instrument is powered down because the clock circuitry is backed up by battery 101 The two buttons are described as follows TIME button selects for display the 24 hour time clock The format showing 2 45 pm is as follows 49500 The time can be set pressing the TIME button entering the appropriate time onto the display and then pressing the ENTER button Note that the time 28 00 00 to 33 59 59 can be entered It is invalid but it can be entered DATE The DATE button selects the date mode for display Th
30. Scanning at a high rate of speed in the daisy chain configuration may not show the scanned channels on the mainframe s display Example 5 Temperature Scan With the Model 7057A thermocouple scanner card the Model 706 can scan temperature points Since the Model 7057A combines the functions of thermocouple scanner uniform temperature reference it is especially useful for scanning thermocouples The input terminals are 10 alloy copper set in an isothermal block to minimize temperature differences A thermistor sensor within the isothermal block is used with a bridge network located on the Model 7057A The temperature of the heat sink is used to calculate the corrected thermocouple output The output voltages of each thermo couple must be converted to temperature C or F using ap propriate thermocouple tables or polynominal equations These equations and tables are provided in the Model 7057A Instruction Manual In this example the 706 will be programmed to scan 25 separate temperatures The following parameters will be pro grammed into the Model 706 1 First channel is 1 2 Last channel is 25 3 Number of poles is 2 4 Interval time is 3 seconds 5 Use the continous scan mode NOTE Channels 1 11 and 21 are the temperature references for the cards _ Use the steps outlined in Table 2 11 to program the Model 706 for the preceding parameters As you can see this temperature scan example is quit
31. The ENTER button loads the displayed data for the interval time channel number time date and program modes into the Model 706 During the entry of data C segment cursor is flashing the CANCEL button cancels the present display and reverts the instrument to the previous display When activated the TIME button selects for display the 24 hour time clock and turns on TIME LED When activated the DATE button selects the date mode for display and turns on the DATE LED When lit the TALK LED indicates that the Model 706 is the talk mode LISTEN When lit the LISTEN LED indicates that the Model 706 is in the listen mode REMOTE When lit the REMOTE LED indicates that the Model 706 is in the remote mode Refer to Section 3 IEEE 488 bus operation CLOSE OPEN FIRST LAST RESET INTERVAL CONTINUOUS SINGLE START STOP PRGM DATA ENTER CANCEL TIME DATE TALK 25 90 I pON z 39n4 pA e auva row 2 cauvo Q 0 gt O z aw a 2 N t i E V H D oi I AQVIM 093 433NNwH2 i 1 C 26 2 5 Rear Panel Description Ca
32. common side of the circuit under test or power line earth ground Always make measurements with dry hands while standing dry insulated surface capable of withstanding the voltage being measured Do not exceed the maximum signal levels of the instruments and accessories as defined in the specifications and operating informa tion and as shown on the instrument or test fixture panels or switching card Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sources NEVER connect switching cards directly to AC main When con necting sources to switching cards install protective devices to lim it fault current and voltage to the When fuses are used in a product replace with same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as safety earth ground connections If you are using a test fixture keep the lid closed while power is ap plied to the device under test Safe operation requires the use of a lid interlock Ifa screw is present connect it to safety earth ground using 18 AWG or larger wire The symbol an instrument or accessory indicates that 1000V or more may be present on the terminals Refer to the product man ual for detailed operating information Instrumentation and accessories should not connected to hu mans
33. gram modes Refer to Table 2 16 for an example of the CANCEL button function In Table 2 16 the interval display mode is selcted and a 120 second interval time is entered onto the display For some reason or other the interval time in step 2 is an error so the CANCEL button was pressed to revert the display to the previously programmed interval time SCAN The SCAN group of buttons consists of SINGLE CONTINUOUS and START STOP buttons These three buttons select the different scan modes and described as follows CONTINUOUS Actuation of the CONTINUOUS button selects the continuous scan mode and turns on the con tinuous LED The continuous scan mode allows the user to scan through the programmed channels at the programm ed interval rate continuously The continuous scan mode is initiated upon the actuation of the START STOP button or upon receiving the appropriate external trigger pulse Pressing the START STOP button during a continuous scan sequence stops the scan at the presently displayed channel To continue the scan sequence simply press the START STOP button Table 2 16 CANCEL Function Example Step Action comme 1 Press INTERVAL Press 1 2 0 0 0 0 Press CANCEL 2 16 Selects interval display mode and turns on the INTERVAL LED Enters 120 second interval time on the display Reverts the interval time data of step 2 to the previously programmed interval time
34. to 00 00 00 when power to the instrument has been cycled Refer to Table 2 3 SERIAL IN The serial in function is used in a daisy chain configuration where the ALARM SERIAL IN connector is connected to the SERIAL OUT connector of another Model 706 Refer to example 4 of paragraph 2 5 4 5 SER OUT The SER OUT connector is a BNC output connector that provides a connection to another Model 706 for a daisy chain configuration The SERIAL OUT con nector is applied to the ALARM SERIAL IN connector of another Model 706 Refer to example 4 of paragraph 2 5 4 6 DIGITAL 1 0 DIGITAL 1 port consists of 16 digital input and output lines along with four lines that are 5V and IEEE common Eight of the 1 0 lines can be used for inputs and eight can be used for outputs The outputs will drive one TTL load and the inputs are TTL compatible For more information concerning the digital 1 port refer to paragraph 3 5 8 step 15 7 IEEE 488 INTERFACE IEEE bus connector pro vides bus connection to the Model 706 The connector mates with the Keithiey Model 7008 3 and 7008 6 cables For more detailed information concerning the IEEE con nector refer to paragraph 3 3 8 LINE FUSE This is the line power fuse and it is rated as specified in Table 5 2 9 LINE RECEPTACLE The line power receptacle mates with a three wire line cord which provides connections to line voltage For correct line voltage selection refer to paragraph 5
35. vie y o 41 es 2519 H PAGE 20 2 Figure 6 3 Mother Board Component Location Drawing Dwg No 706 100 sheet 2 of 2 6 13 6 14 91 9 91 9 091 904 1 5 9 a 9 EUNT AW DEN Ope 193 9 seen Leon 2j gt m o Geo ox i T fel z II u mw Se ara Shite ERIT WCG ING A16 32V Td K 64 g4 68 2I 24 LL oc wD i 224 Tz 9 c 3 Sth 2m WN 1 23 1 1 25 Bonwit za sonn 52 eSocz Oor 4 2 l 1 DOZ DI i 69 1 21 9 JON gt OZ 2T OZ orL 202 25 29 t 202 0 12 UM 42 Z0 1 2 ZQ own 0z 2r O 1 s Mebhshe So O
36. where Set time command Hours m Minutes s Seconds Programming Example Enter the following statements into the HP 85 to set the time to 5 00 pm REMOTE 718 END LINE OUTPUT 718 D2S17 00 00X END LINE When the END LINE key is pressed the second time the Model 706 displays the time and sets it to 5 00 pm NOTE When the format of the programmed time is not the full six digits hh mm ss the Model 706 trun cates the time to what is programmed If in this example the last zeroes are left out the time would be programmed for 17 seconds not 5 00 pm The colons between the hours minutes and seconds are optional 20 Trigger Modes _ The trigger commands control the stimulus to be used to start or stop Model 706 program operation Basically the trigger stimulus controls instrument operation much like the front panel START STOP button does except that the trigger stimulus can control either start or stop not both depending on the selected trigger mode Model 706 trigger modes are TO Start on talk T1 Stop on talk T2 Start on GET T3 Stop on GET T4 Start on X T5 Stop X T6 Start on external T7 Stop on external NOTES 1 2 3 In the step manual program mode the instrument vances one channel location with each trigger stimulus When the instrument is triggered to start program execu tion begins at the present channel location
37. 012 R202A 3 3K 3 3K 55 ee G TALK 7 55208 H _ 56771 RELEASED 24 14 R Mz po P 986 Ene Rep 3124 waned ee 2 1 ia hf f SE pty PAG 2 PAS f 2 4 R20IF Olt 2000 Y 0 206 O15 29 015 O14 R202G 2 202 R202F 3 3K 3 3K 43K 3 3K 04 08 2 SL ta 6 H Figure 6 5 Display Board Schematic Diagram Dwg No 705 116 6 17 6 18 92 907 265116 c D E F G H _____ meo 18S ECEA 7 gt TE usen Eana cp TE anna 17 21 T TN ES 00 bv 5 5V 5V 5 ol Ol Ol ol SR3O5B 8305 R3050 583056 R30 1 2 2 92 2K 2 2K 2 2K lt 2 2K O3 OA 05 OX 07 Ol 9 34 05 QR2038 RZO3C 2823030 10K 10K 10K O16 O5 Olg 5 O12 P1009 I 15 14 13 a P 6 5 PI 4 3 SIT SHIFT REGISTER O oN C302 8 2 MATES WITH 1009 SEE MOTHER BOARD SCHEMATIC PAGE 1 ZONE H5 15 5 8 BIT Seren C303 3 4094 he 05 Q4 dy 14 5 4 y 3 n 9 uzoaci5
38. 04 1 E4 R 76 4 7k G5 1 F4 R 76 10k F5 1 F4 R 76 10k F4 1 F4 R 76 10k F4 1 F4 R 76 10k G2 1 SW 420 1 1 PS 17 TB 3 G42 B2 IC 299 G5 2 B3 LSI 49 D5 2 C2 LSI 54 C5 2 C3 IC 230 A2 2 D3 LSI 27 B2 2 D3 706 801 03 2 706 800 2 2 LSI 58 2 2 LSI 58 1 1 F2 IC 230 4 1 G2 182 C5 1 G2 IC 182 G5 2 B3 IC 298 SEV IC 163 E2 1 E3 IC 177 C1 1 F3 IC 182 E12 IC 149 B3 1 F3 230 Table 6 3 Mother Board Parts List Cont _ Circuit Location Keithley Desig Description Sch Pcb Part No Decoder Demultiplexer 7415138 1 IC 182 Versatile Interface Adapter SY6522 151 28 Ciock Calendar UPD 1990 330 4050 107 8 stage shift register 14094 IC 251 Quad 2 Input NAND 4011 IC 102 Hex Inverter 74LS04 IC 186 Buffer Gates 74LS125 IC 336 Quad 2 Input NAND 4011 IC 102 Crystal 4MHz CR 10 Crystal 32 768kHz 1 CR 20 NOTE The mother board schematic is spread out over two pages The location of the components on which page is noted by the dash numbers in the location Table 6 4 Digital 1 O Board Parts List Description Pcb Part No Capacitor 0 1 50V Ceramic Disc 02 237 1 Capacitor 0 1 50V Ceramic Disc Capacitor 0 1 50V Ceramic Disc Bridge Rectifier 18 Bridge Rectifier 18 Bridge Rectifier VM18 Bridge Rectifier VM18 NPN Silicon Transistor 2N3904 Thick
39. 10 column 3 row 4 is closed Example 3 As another example consider a 40 x 5 matrix which would be 10 Model 7052 matrix cards with jumpers in stalled between the columns of each card A matrix display could be as follows 043 043 Denotes unit 1 001 through 050 denotes unit 1 043 Also denotes card 9 of unit 1 041 through 045 denotes card 9 of unit 1 043 Also denotes column 3 of card 9 of unit 1 041 through 045 denotes columns of card 9 of unit 1 2 Denotes row 2 Denotes crosspoint is open where 2 23 Therefore the display 043 20 means that a 40 x 5 matrix set up the crosspoint of unit 1 9 column 3 row 2 is open Refer to Figure 2 6 Table 2 19 and Table 2 20 for further clarification of the matrix mode display DENOTES ROW 3 DENOTES CROSSPOINT IS CLOSED DENOTES COLUMN5 DENOTES CARO 9 DENOTES SLAVE 2 Figure 2 6 Matrix Display Clarification Table 2 19 Matrix Unit Number Display Assignment Unit Number Display Assignment Master 001 through 050 Slave 1 051 through 100 Slave 2 101 through 150 Slave 3 151 through 200 Slave 4 201 through 250 1 Pole Mode The 1 Pole mode is available on the Model 7056 scanner card On the card relay K111 is the output relay for the even channels and relay K112 is the output relay for the odd channels These relays close when the appropriate channel relays close In the 1 pole
40. 11 12 13 14 15 175 save relay set up 10 clears all buffers Close Channel Open Channel 21 22 23 24 25 275 recall a saved relay set up Overrides close Set First Channel Set Last Channel If changed First 1 Last channel 100 to 500 and displays channel 1 Opens all channels displays first channel and overrides close open and recall PROGRAM COMMENTS 10 REMOTE 718 END Sets the Model 706 for the LINE remote mode Clear the Model 706 Display channel mode on 706 display and send chan nel date with prefix Obtain data string 20 CLEAR 7 END LINE 30 OUTPUT 718 GODOX 40 ENTER 718 A END LINE 50 DISP A END LINE 60 END END LINE Display data string End of program After typing in the program press the RUN key on the HP 85 to run the program After the RUN key is pressed the channel data with a prefix is displayed on the CRT as follows C0001 S0 This program can be used for any of the prefix commands G As another example we will illustrate the D4 display message mode Read the following paragraphs and do the programming example 3 13 The message is of course limited to the display of the seven segment LEDs on the front panel of the Model 706 The messages may be controlled with the following com mands 1 D4aaaaaaX The command is D4 while the letter represents an ASCII character up to 7 characters may be sent 2
41. 3 2 9 FRONT PANEL PROGRAMS This section contains instructions necessary for operating the 2 18 15 internal programs of the Model 706 The programs are ac tivated by pressing the PRGM button along with the button representing the appropriate program number The programs do a number of various tasks which are summarized in Table 2 17 Program Notes 1 2 Each program is entered by pressing the PRGM button followed by the desired program number Pressing the PRGM button selects the program mode and the following is displayed As you have noticed the question mark is flashing This is prompting the operator to enter the desired program number refer to Table 2 17 After entering the program number the Model 706 goes into the program selected Then the display prompts the operator to enter numerical data Numerical data varies with each program New programs may be entered without clearing a program that is presently running To do so press the PRGM but ton followed by the desired program number Data is entered into the digit whose segment cursor is flashing by pressing the desired number button The C segment of a display is shown as follows B C segment As each digit is entered the cursor moves one place to the right until the last digit on the right is reached Then it is cycled to the first digit on the left Only as many significant digits as necessary need to be entered The Mo
42. 706 with 10 scanner cards has up to 100 2 pole channels Refer to paragraph 2 2 2 for in structions on how to remove or install the various scanner cards EXT TRIGGER The external trigger is a BNC connector that initiates the selected scan mode single step or con tinuous in the same manner as the START STOP button The input trigger pulse must be a negative going TTL level pulse with a minimum duration of 2usec The selected scan mode is initiated upon the negative transition of the pulse 2 17 This feature can used to trigger the 706 into the selected mode using another instrument 3 CHANNEL READY The CHANNEL READY output is a BNC output connector that provides a negative going TTL level pulse with a duration of greater than 10 at the completion of the programmed settling time This features can be used to inform another instrument Source etc that the present channel settling time is completed 4 ALARM SERIAL IN The ALARM SERIAL connec tor has two functions The alarm out function and the ser al n function They are described as follows ALARM The alarm function outputs a negative going TTL level pulse with a duration of greater than 10 This pulse appears once upon reaching the programmed alarm time The alarm time can be programmed by front panel Program 7 When the alarm time is set to 00 00 00 the pulse does not appear The programmed alarm time is set
43. E 20046 AG 20018 2 P ool FIO AAO 80019 1 yh 3 dp SYOASt lt s el 2 s sil r si _ 6 M St A Sota 29017 001 LON 5 SNO LVN 1S3q SNOLLVNDIS3Q SLLVW3H2S LS3HSIH 9 elu 6 91 6029 8 GHVO8 Av laSIQ 335 Z Oid 18 25 5 5 25 m gc Peta 21 n 5 aes t lt lt oor 2 eti 2222 QI G3 3NOZ 63 INOZ OVA OM 983NOCZ IMAZ SZIN S SH 34071 Ove 6001 9 3 02 1 944 Q S8 4 ON 98 NEM 5828 D 6 d NES MEC 7 E58 A 3NOZ 39vglo von 2 6 Oo y 3NOZ 1 3994 3NOZZ 39 d gt 23 3NOZ139vd gt 3NOZ 4 39 58 INOZ lt P 54r Y 6 J s i 210 gt 38 MS L 3390 ey XINOO BINOO SN LX 2 3NOZ
44. F101 protects the line and the instrument in case of overload If the line voltage setting is changed see paragraph 5 3 the fuse must be replaced according to Tables 5 1 and 5 2 The fuse may be replaced by using the procedures described in the fol lowing paragraphs WARNING Disconnect the Model 706 from the power line and from other equipment before replacing the fuse 1 Turn power off and disconnect the line cord 2 The fuse carrier is spring loaded Using a flat blade screw driver push the fuse carrier in and rotate 1 4 turn counier clockwise The carrier and fuse will eject from the instru ment 3 Remove the fuse from the carrier and replace per Table 5 1 or Table 5 2 CAUTION Do not install the fuse with a higher rating than specified in Table 5 1 or 5 2 Instrument dam age may result 4 To install the fuse and carrier into the holder reverse the procedure in step 2 Table 5 1 Fuse Replacement 3AG Size Line Keithley Voltage Fuse F101 Part No 1 25A 250V SLO BLO 0 6 250V SLO BLO 90V 125V 195V 250V Table 5 2 Fuse Replacement 5mm Size Line Keithley Voltage Fuse F101 Part No 90V 125V 1 25A 250V SLO BLO 195V 250V 0 6A 250V SLO BLO 5 3 LINE VOLTAGE SELECTION Setup the Model 706 io operate on the available AC line voltage as follows WARNING To prevent a shock hazard always turn the in strument off and disconnect the line cord be
45. First Channel Set Last Channel Set Number of Poles Reset Independent Commands Timer Commands Channel Commands 3 5 1 Display Mode The following five commands set the display mode for the channel time date interval or display message mode 1 D0 The 00 command sets the Model 706 for the channel display mode 2 D1 The D1 command sets the Model 706 for the interval time display mode The interval time is the programmed time the channel is closed The interval time can be altered by programming inputs refer to paragraph 3 5 8 3 D2 The D2 command sets the Model 706 for the time display mode The time in hours minutes and seconds is displayed refer to paragraph 2 6 for time display format 4 D3 The D3 command sets the Model 706 for the date display mode The date in month and day is displayed refer to paragraph 2 6 for date display format 5 D4 The D4 command sets the Model 706 for the display message mode The display message mode allows the user to display a customized message on the Model 706 scan ner s front panel display Programming Example display and transmit the chan nel data with a prefix and display the data on the 85 CRT enter the following program into the HP 85 Denuo CS E0 American Date Format 1 International Date Format Set Time Set Date Set Alarm Time Set Settle Time Set Interval Time IEEE Terminator Character Display Channel
46. Model 706 must first be placed in the remote and lockout modes To do this enter the following statements into the HP 85 REMOTE 718 END LINE LOCAL LOCKOUT 7 LINE When the END LINE key is pressed after the LOCAL LOCKOUT 7 statement the Model 706 front panel controls are locked out Check to see that the REMOTE LED is on and the front panel controls are locked out The GTL command sequence is automatically sent by the HP 85 statement with the following statement LOCAL 718 END LINE Note that the REMOTE LED on the front panel turns off but the front panel controls are still locked out Front panel con trol can now be restored by setting the REN line false with the following statement LOCAL 7 END LINE After executing this statement front panel control is 38 restored Setting the REN line false with the LOCAL 7 state ment will also take the instrument out of the remote mode 3 5 DEVICE DEPENDENT COMMANDS The device dependent commands allow the user to send the Model 706 commands that perform the same operations as the front panel controls switches except for POWER ON OFF There are a number of commands that control parameters which are not available from the front panel and they are listed in Table 3 6 Each command is entered as an ASCII character followed by a specific parameter that is sent over the bus by the controller The bus treats these com mands as data in that the ATN line is high false w
47. Model 706 scanners are not 225 programmed slaves activating Program 91 produces the following two messages The Model 706 will remain in the no loop display condition until all other daisy chained Model 706s are connected and programmed as slaves or any front panel program other than 91 is activated To activate Program 91 use the following procedure 1 Connect the Model 706 to at least one other Model 706 in a daisy chain configuration See Figure 2 4 2 Install the appropriate scanner cards 3 Turn the units on 4 Select all but one Model 706 as the slave s of the con figuration 5 Press PRGM 9 2 of the selected slave unit s 6 Press PRGM 9 1 of the selected master Model 706 The following message is displayed upon pressing 1 After the control display the 706 reverts to nel mode and displays the programmed first channel At this point the Model 706 is programmed as the master control of the daisy chain configuration To program the Model 706 for a relay configuration refer to paragraph 2 5 3 The only dif ference is the extended number of channels provided by the daisy chain configuration To program the master Model 706 out of the master condi tion activate Program 90 2 9 12 Program 92 Slave Program 92 is used to set the Model 706 as a slave unit in a daisy chain configuration The slave unit s respond to the commands of the designated master contro
48. RAMs U108 and U109 an address decoder 15138 0116 an asynchronous communication interface adapter ACIA U103 and assorted buffers and line drivers U104 0110 0118 0126 0122 0119 0111 and U112 The threshold detection and reset circuit consists of U115 and asso ciated components If the power supply voltage level drops be low 4 for some reason U115 resets the Model 706 The tery backup circuitry and clock circuitry consist of U121 U123 U124 U127 Q101 102 Y102 and associated components The IEEE 488 interface circuitry consists of a 9914 general pur pose interface bus adapter U102 U101 and U113 are general purpose bus transceivers The memory used in this system is shown in the memory map Figure 4 2 Interfacing of the micro processor with the RAMs ROMs Front Panel VIA ACIA IEEE 488 interface circuitry is controlled by the address de coder U116 Partial address decoding is used in this system The function selected is determined by the state of the A13 A14 and A15 ad dress lines These address lines determine which output is se lected by the decoder U116 in accerdance with the memory map Only one of these device ROM RAM VIA ACIA etc will have access to the data bus at any one time The address de coder selects one of the devices only after a valid memory ad dress has been asserted at the decoders input G1 pin 6 The signal is generated by the 6808 microprocessor Timin
49. Sw 31 0000 5 NId nn 25 53 1 335 E nee MD p Wu 91 335 0005 mu 706 06 J 2 v PAGE 2022 P6158 40 1 B c D 991 9020 lt 4 m ED E EA SEE PAGE 2 28 ERES E ZONE Hi pe 2 L y amer AL ELTE Ty Is 7 8 d 506070 20 DUTID 2D 36 0434 Vcc SEE PAGE 2 ZONE 2 SEE PAGE 2 ZONE H3 SEE PAGE 2 ZONE H3 SEE PAGE 2 ZONE H4 SEE PAGE 2 2 ZONE SEE PAGE 2 J ZONE H5 D Eo SEE PAGE 2 ZONE H4 SEE PAGE 3 ZONE 44 FORM 285100 QOD lt C374 OCTAL LATCH GNO 40 15060 708 6V nL i2 hi 3 9 192112425 272424 N JI029 THESE CONNECTORS MATE WITH OPTIONAL SCANNER CARDS 12 7059 SEE APPLICABLE SCHEMATICS 18 6V 20 2212 415 7 13 H5 2112512327 26 V E F G me To Pw ly TOW of o INS 2 4 NOTES LALL CAPACITOR VALUES ARE IN MICROFARADS UNLESS OTHERWISED MARKED pF PICOFARADS 2 47 DENOTES ANALOG COMMON a Ny DENOTES DIGITAL COMMON 4 49 DENOTES CONNECTION BETWEEN PAGES 5 5 6 DENOTES MAINFRAME GROUND SCREW HIGHEST SCHEMATIC SCHEMATIC DESIGNATIONS 6 DESIGNATIONS USED NOT
50. TO Start on Talk either of the 85 BASIC state ments will initiate a scan SEND 7 TALK 18 S SPOLL 718 Requesting data from the Model 706 will stop the scan The statement ENTER 718 A does not initiate a scan since the controller addresses the Model 706 to talk and then requests data in the same state ment 3 5 7 Programmable Terminator Y The Model 706 uses special terminator characters to mark the end of its data string To allow a wide variety of controllers to be used the terminator can be changed by sending the appropri ate command over the bus The power up default value is the commonly used carriage return line feed CR LF sequence The terminator assumes this default value upon power up or af ter the instrument receives a DCL Device Clear or SDC Se lective Device Clear The terminator may be programmed by sending the ASCII char acter Y followed by the desired terminator character Any ASCII character except one of the following may be used all capital letters all numbers Blank e Special command characters will program the instrument for special terminator sequences as follows 1 Y LF CR LF Two terminators 2 Y CR CR Two terminators 3 Y DEL No terminator NOTE Most controllers use the CR or LF character to terminate their input sequences Using a nonstandard terminator may cause the con troller to hang up unless special programming is used
51. The REN is set low true by the HP 85 when the following line is entered into the HP 85 REMOTE 718 END LINE When the END LINE key is pressed the Model 706 is placed in the remote and the front panel REMOTE LED is turned on 3 IFC Interface Clear The IFC command is sent by the controller to set the Model 706 to the talk and listen idle states The instrument responds to the IFC command by turning off the front panel TALK or LISTEN LEDs if the in strument was previously in one of those modes To send the IFC command the controller only has to set the IFC line true IFC Programming Example Before demonstrating the IFC command turn on the front panel REMOTE and TALK LEDs by entering the following statements into the HP 85 REMOTE 718 END LINE ENTER 718 A END LINE The front panel TALK and REMOTE LEDs should now be on The IFC command may now be sent by entering the follow ing statement into the HP 85 ABORTIO 7 END LINE CLEAR 7 END LINE After the END LINE key is pressed the TALK LED turns off indicating the Model 706 is in the talk idle state Note that the remote mode is not cancelled 4 EOI End Or Identify The command is used to iden tify the last byte of a multi byte transfer sequence 5 SRQ Service Request The SRQ line is set low true by device when it requires service SRQ can be identified by reading the status word 3 2 2 Handshake Lines The handshake group c
52. To stop the program press the CONT key To resume the program press the RUN key NOTE Sending any valid command during a scanning sequence STOPS THE SEQUENCE at the presently displayed channel or crosspoint 21 Set Date V The letter V is the command to set the date The format for the set date command is as follows Vmm dd American Vdd mm International Programming Example Enter the following statements into the HP 85 to program the date for July 12th REMOTE 718 END LINE OUTPUT 718 V12 07X END LINE OUTPUT 718 D3X END LINE When END LINE is pressed the second time the Model 706 sets the date for July 12th in international format when the END LINE key is pressed the third time the date is displayed on the Model 706 For american format the second state ment would be OUTPUT 718 07 12 END LINE The date american or international must appear in the statement as a four digit number If three digits are used in stead of four the Model 706 moves the three digits to the right by one For example enter the following state ment into the HP 85 3 26 OUTPUT 718 V123X END LINE When the END LINE key is pressed the date is set to 01 23 which is January 23rd in the American format If two or less digits are used instead of four digits the 706 displays an IDDCO Illegal Device Dependent Command Option and does not change the present date The colon between the month
53. USED THRU PO __ 4420 THRU POD _ F 3 6 GE 10 m Figure 6 8 Interconnect Board Schematic Diagram Dwg No 706 166 sheet 1 of 3 6 25 6 26 8c9 Lc9 40 Z 5 991 907 ON uigiBeig gt 5 pyeog 3594405189341 8 9 1 402 39Vd S3LON 304 39vd 335 9 310N S2ILVW3H2S 335 ESOLIZIA SQHVO Ha3NMVOS 0 31vW SHOLOSNNOD 353 1 H e a a 2 ss 0101582 2422 Ge 2 2 2 e DI el en B 9i nj Si eu 522 6 Spel etre 12216 2 6 ni A94 Ag n 9 A9 9 gt 3NOZ 9 335 3 02 9 335 tv 3NOZ 39vd 335 TA RE E SO NEA ECE E 4 39 24 335 8 EI qug ESE 7 SE S Ei Bl S ee Si r Rare BE Eq E SE E mim 5 nu mi zi ei e js 5 zle 9i o 22 529 JNOZ oo 4 5 39 4 335 HEB 3 a 38 e EET P
54. W Composition Resistor 1500 5 W Composition Resistor 15k 5 W Composition Resistor 4 7k 5 4W Composition NOT USED NOT USED Resistor 10k 5 W Composition Resistor 10k 5 4W Composition Resistor 10k 5 WW Composition Resistor 10k 5 4W Composition Line Switch Thermal Breaker GPIB Octal Transceiver SN75161 GPIB Adapter 9914 Asynchronous Communications Interface Adapter 68450 Octal Buffer Line Driver 74LS244 Microprocessor 6808 EPROM 2764 EPROM 2764 CMOS RAM HM6116 CMOS RAM HM6116 Octal Buffer Line Driver 74LS244 Decoder Demultiplexer 74LS138 Decoder Demultiplexer 7415138 GPIB Tranceiver SN75160 Quad 2 Input NAND 74LS00 Threshold Detector ICL8211 Decoder Demultiplexer 7415138 Quad Bi lateral Switch 4066 Octal Buffer Line Driver 74LS244 Order same software as presently installed For example if A1 is displayed on power up order 706 801 A1 for U106 Location Keithley Sch Pcb Part No E E4 TG 47 E3 1 E4 TG 84 G4 2 C3 R 76 3 3k SEV C3 TF 99 B3 2 03 R 76 3 3k B3 2 D3 R 76 3 3k B3 2 D3 R 76 3 3k B2 2 D4 R 76 3 3k E6 2 D4 R 76 100 D6 2 D4 R 76 100 06 2 D4 R 76 100 D6 2 D4 R 76 100 D6 2 D4 R 76 3 3k E4 1 E3 R 76 1k E1 2 E3 R 76 100k E2 1 E3 R 76 51k D1 1 E3 R 88 5 23k 02 1 R 88 88 7k 02 1 R 88 30k 1 2 R 76 10k 1 2 E4 R 76 100k F5 1 E4 R 76 10k E4 1 E4 R 76 150 04 1 E4 76 15
55. also activate the appropriate LEDs 4 5 488 INTERFACE CIRCUITRY The IEEE 488 interface circuitry is comprised of GPIB adapter U102 GPIB octal transceivers U101 U113 and associated capacitors The standard bus connector J1002 is located on the rear panel The primary address is set from front panel Program 3 There are no primary address dip switches Refer to paragraph 2 9 4 for complete details concerning the primary address GPIB adapter U102 is the heart of the IEEE 488 interface cir cuitry 9102 is capable of performing ail IEEE 488 talk listen protocols The data bus consists of DO through D7 The ad dress lines that are routed to the IEEE 488 circuitry are AO A1 and A2 The REN IFC NDAC NRFD DAV EOI ATN and SRQ lines are controlled by U102 Before the data is transmit ted to the IEEE 488 bus via connector J1002 it is buffered by the octal bus transceivers U101 and 0113 The REN IFC etc lines are buffered by U113 U101 and U113 operate on the tri state output principle That is the output is either high low or in a high impedance state 43 44 SECTION 5 MAINTENANCE 5 1 INTRODUCTION This section contains information necessary to maintain the Model 706 scanner The information in this section includes fuse replacement line voltage selection disassembly instruc tions and basic troubleshooting information 5 2 FUSE REPLACEMENT The Model 706 line fuse F101 is located on the rear panel
56. and day in the statement is optional 22 Set Interval Time W The letter W is the command to set the interval time in seconds The maximum interval time is the programmed time for the channel to be closed The format for the in terval time command is as follows Wnnn nnn where W Set interval time command n Number of seconds Programming Example Enter the following statements into the HP 85 to program the interval time to three seconds REMOTE 718 END LINE OUTPUT 718 W003 00X END LINE When the END LINE key is pressed the second time the Model 706 sets the interval time to three seconds To verify that the interval time has been set to three seconds send D1 command This is the command to display the interval time In the second statement the leading and trailing zeroes are optional As long as the decimal point is entered in the ap propriate place the leading and trailing zeroes are optional The interval time format on the Model 706 display is always six digits 23 Programming Terminator Y The Model 706 uses special terminator characters to mark the end of its data string To allow a wide variety of controller s to be used the terminator can be changed by sending the appropriate command over the bus For more information and a programming example refer to paragraph 3 5 7 24 Alternate Outputs U The letter is the command to program the 706 to transmit the status word settle time alarm ti
57. buffer location Terminator 3 10 H l J K L M N Table 3 7 706 Device Dependent Commands Set Number of Poles Display Channel Close Channel Display Mode Date Format Set First Channel Prefix Settle Time Save Debug Test Set Last Channel SRQ Open Channel Port Program Set Alarm Time 0 Matrix Mode 1 1 A2 2 pole or A4 4 Bnnnn Cnnnn 00 Channel 01 Interval Time D2 Time D3 Date D4 Display Message American Date Format E1 International Date Format Fnnnn 0 Channel Data sent with prefix 1 Channel Data sent without prefix G2 Buffer State sent with prefix G3 Buffer State sent without prefix G4 1 0 Port sent with prefix G5 1 0 Port sent without prefix G6 Time Date sent with prefix G7 Time Date sent without prefix G8 Status Word sent with prefix G9 Status Word sent without prefix G10 Settle Time sent with prefix G11 Settle Time sent without prefix G12 Alarm Time sent with prefix G13 Alarm Time sent without prefix 014 Interval Time sent with prefix 15 Interval Time sent without prefix G16 First Last sent with prefix G17 First Last sent without prefix 18 Previous relay set up buffer location sent with prefix G19 Previous relay set up buffer location sent without prefix Hnnn nnn 12 14 15 175 IO clears all buffer
58. continues up to and including the last pro grammed channel At this point the Model 706 reverts to the programmed first channel and repeats this scan sequence continuously Pressing the START STOP button during a continuous scan sequence stops the scan at the presently displayed channel The channel remains closed and the START STOP LED turns off To continue the scanning sequence from the presently displayed channel press the START STOP button To stop the scanning sequence and reset the Model 706 to the programmed first channel which is 1 in this example simply press the RESET button Example 4 Daisy Chain Configuration In a situation where more than 100 channels are required the Model 706 can be connected to other Model 706 scanners to increase the number of available channels A total of five Model 706 scanners can be connected together to increase the number Refer to paragraph 2 2 2 Selects PROGRAM 6 Selects the 2 pole mode Refer to paragraph 2 9 for more information about front panel programs Programs channel 1 as the first channel Programs 100 as the last channel Programs the interval time for 0 3 seconds Turns on the CHANNEL LED selects the channel mode for display and resets to the programmed first channel Selects the continuous scan mode and turns on the CONTINUOUS LED Initiates the continuous scan sequence of available channels to 500 The method of connection is shown in Figure 2
59. digital self test of the RAM circuitry reveals a problem the Madel 706 displays the follow ing If the CRC reveals problem the 706 displays the following This display indicates that there is problem with the 7065 In either of these two cases the Model 706 s memory circuitry should be checked The cause of the problem could be that a memory chip is loose in the socket Upon actuation of front panel Program 8 the Model 706 per forms a digital self test and a CRC of the RAM and ROM cir cuitry respectively the digital self test reveals a problem with the RAM circuitry the Model 706 displays the following for approximately 0 5 seconds H After this display the Model 706 displays the following FH IL If the CRC reveals a problem with the ROM circuitry the Model 706 displays the following for approximately 0 5 seconds 4 D After this display the Model 706 displays the following if the test and the CRC both reveal problem the Model 706 displays the RAM and ROM error messages and then displays the fails message When either test does not reveal a problem using Program 8 the Model 706 displays the following message that indicates both tests have passed Table 5 5 Power Supply Checks Item Component Required Condition 101 Line Switch F101 Line Fuse J1001 Line Power AC input to supply 2 pin Molex Connector 46
60. fore removing the top or bottom cover 1 Remove the top cover Refer to the disassembly instruc tions in paragraph 5 4 Refer to Figure 5 1 2 Remove the power supply PS 17 from the Model 706 mainframe Refer to the disassembly instructions in para graph 5 4 step 6 3 Place the jumper across the appropriate pins as listed in Tabie 5 3 Also refer to Figure 5 2 for location of the jump ers NOTE Table 5 3 and Figure 5 2 refer to a Xentek supply Sheet 1 of the Mother Board schematic shows jumpers for a Lambda supply 4 Install the proper fuse as stated in paragraph 5 2 Line Jumper Voltage Line Input Placement 5 1 FRONT PANEL TOP COVER 706 319 FRONT FQOT 2 Required 706 317 COvER REAR FOOT 2 Required 706 316 706 320 e 5 2 5 4 DISASSEMBLY F To install the supply reverse the procedures of steps A through E If it becomes necessary to disassemble the Model 706 use the following procedure Also refer to Figures 5 1 5 2 and 5 3 Remove the top cover as follows WARNING To prevent a shock hazard always turn the in strument off and disconnect the line cord be fore removing the top cover A Remove the top two retaining screws located at the rear of the instrument B Grasping the top cover at the rear of the instrument carefully pull it out and away from the instrument Remove the bottom cover in the same manner as the top caver w
61. front panel operation of the Model 706 There are a number 2 Press the FIRST button to program the presentiy of steps to follow in order to get the Model 706 ready for i displayed channel as the first channel scanning operation These steps are as follows 1 Install the desired scanner card s Refer to paragraph 2 2 2 NOTE for information concerning the installation of the scanner Selecting a channel that does not exist in the cards into the Model 706 present set up causes the Model 706 to display 2 Select appropriate line voltage Refer to Section 5 the following message 4 Program the desired channel Channel mode is selected upon power up Maintenance for information concerning the selection of appropriate line voltage and proper fuse rating h Turn on the Model 706 The instrument then goes through the power up sequence that is described in paragraph 2 3 B Select the last channel and displays one of the following 1 Press the desired number from the DATA group but ton 08 D Normal Condition 2 Press the LAST button to program the presently displayed channel as the last channel Matrix Mode Refer to Program the number of poles 0 1 2 or 4 D Paragraph 2 9 7 posts Press PRGM NOTE 6 If upon power up the Model 706 displays the C Select number of poles 0 1 2 or 4 slave or no loop message refer to paragraphs D Press ENTER
62. is addressed to talk or listen the appropriate bus transactions take place For example if the Model 706 is addressed to talk it places the data string on the bus one byte at a time The controller reads the information and the appropriate software can be used to direct the information to the desired location 3 1 1 Software Consideration The most sophisticated computer in the world would be useless without the necessary software This basic require ment is true of the IEEE 488 bus which requires the use of handler routines as described in this section Before a controller can be used with the IEEE 488 interface the user must make certain that appropriate handler software is present within the controller With the HP 85 computer for example the HP 85 interface card must be used with an addi tional ROM which contains the necessary handler soft ware Other small computers that can be used as controllers have limited IEEE command capability The PET CBM computers for example are incapable of sending multiline commands from BASIC although these commands can be sent through machine language routines The capabilities of other small computers depends on the particular interface being used Often little software tricks are required to achieve the desired results From the preceding discussion the message is clear make sure the proper software is being used with the interface Often the user may incorrectly s
63. mode each channel relay on the Model 7056 scanner card controls two channels This is because each relay is a 2 pole relay For example if the channel 1 relay is closed then the channel 2 relay is also closed because they are the same relay The closed channels do not reach the output unless the appropriate output relay is closed In some situations this may close channels that are not pro grammed as closed For example if channel 1 and 4 are grammed as closed then because of the scanner card s ar chitecture channels 2 and 3 are also closed Refer to the following chart 1 Pole 2 Pole Nomenclature Nomenciature Channel 1 Channel 1 Relay Output Relay K112 Channel 2 Channel 1 Relay Output Relay K111 Channel 3 Channel 2 Relay Output Relay K112 Channel 4 Channel 2 Relay Output Relay K111 Channel 19 Channel 10 Relay Output Relay K112 Channel 20 Channel 10 Relay Output Relay K111 2 9 8 Program 7 Set Alarm Time Program 7 is used to set the alarm time The alarm time is the preprogrammed time that the Model 706 outputs a negative going TTL level pulse with a duration of greater than 10usec at the ALARM SERIAL IN connector The ALARM SERIAL IN connector is located the rear panel of the Model 706 The alarm pulse can be used to inform another instrument to start a measurement sequence The external instrument e g controller DMM printer etc can then start on its own function in the measurement s
64. of normal operation 5 7 SPECIAL HANDLING OF STATIC SENSITIVE DEVICES MOS devices are designed to function at high impedance levels Normal static charge can destroy these devices Table 5 9 lists all the static sensitive devices of the Model 706 Steps 1 through 7 provide instruction on how to avoid damaging these devices 1 Devices should be handled and transported in protective containers antistatic tubes or conductive foam 2 Use a properly grounded work bench and a grounding wrist strap 3 Handle devices by the body only boards must grounded to bench while inserting devices Use antistatic solder removers Use grounded tip soldering irons After devices are soldered or inserted into sockets they are protected and normal handling can resume Table 5 9 Model 706 Static Sensitive Devices Circuit Keihtley Designation Part No U103 LSI 54 U105 51 27 0106 706 801 0107 706 800 0108 LSI 58 U109 LSI 58 U115 177 0117 149 0120 51 28 0121 330 0122 IC 107 U123 251 0124 102 0127 102 0301 IC 130 U303 IC 251 1421 0438 IC 339 Table 5 8 Interconnect Board Checks LStep Mem Componem J1021 through J1030 pins 17 and 18 referenced to pins 5 and 6 analog common 6V 4 U421 pin 2 4V 1 U421 pin 5 44V 1 421 pin 6 4 1V U421 pin 9 4V
65. scan mode all the programmed channels are scanned sequentially one time upon the actuation of the START STOP button The single scan sequence operates as follows 1 The START STOP LED turns on 2 The programmed first channel is closed for the pro grammed interval rate and then opened 3 The Model 706 then advances to the next channel closes it for the programmed interval rate and then opens it 4 This sequence is repeated up to and including the pro gammed last channel At this point the Model 706 reverts to the programmed first channel and turns off the START STOP LED 5 The single scan sequence is now complete To help illustrate a single scan sequence we will choose the following parameters For the sake of simplicity we will use the Model 7056 general purpose scanner card 1 First channel is 5 2 Last channel is 25 3 Interval time is 0 5 seconds Table 2 6 Step Scan Example Install the Model 7056 General Purpose Scanner Card into slot 1 of the Model 706 Select appropriate line voltage and turn on the Model 706 Press PRGM 6 Press 2 ENTER Press 0 0 1 FIRST Press 0 1 0 LAST Press CHANNEL RESET Press START STOP 28 Stan Action Press INTERVAL 0 0 2 0 0 0 ENTER Refer to paragraph 2 2 2 Selects PROGRAM 6 Selects the 2 pole mode refer to para graph 2 9 for more information about front panel programs Programs channe
66. sent with prefix G3 Buffer State sent without prefix G4 1 0 Port sent with prefix 65 1 0 Port sent without prefix G6 Time Date sent with prefix G7 Time Date sent without prefix G8 Status Word sent with prefix G9 Status Word sent without prefix G10 Settle Time sent with prefix G11 Time sent without prefix 612 Alarm Time sent with prefix G13 Alarm Time sent without prefix 614 Interval Time sent with prefix G15 Interval Time sent without prefix 16 First Last sent with prefix G17 First Last sent without prefix G18 Previous relay set up buffer location sent with prefix G19 Previous relay set up buffer location sent without prefix UO z Channel U1 All Channels U2 1 0 Date and Time U4 Status U5 Settling U6 Alarm U7 Interval U8 First Last U9 Previously recalled buffer location JO Run Debug Test sent on last byte out K1 Send See Table 3 9 Onnn where 0 command n 0 to 377 octal Program Trigger Modes Prefix Modes Alternate Output ROM and LED Test I O Port Table 3 8 Hierarchy of Command Execution Date Fromat Time Date Alarm Time Settle Time Interval Time Terminator Channel Channel Save Close Channel Open Channel Channel Recall Set
67. the same relay For example if the channel 1 relay is closed then the channel 2 relay is also closed because they are the same relay The closed channels do not reach the output unless the appropriate output relay is closed In some situations this may close channels that are not pro grammed as closed For example if channels 1 and 4 are pro grammed as closed then because of the scanner card s ar chitecture channels 2 and 3 are also closed Refer to the following chart 1 Pole 2 Pole Nomenclature Nomenclature Channel 1 Channel 1 Relay Output Relay K112 3 19 Channel 2 Channel 1 Output Relay 111 Channel 3 Channel 2 Relay Output Relay 112 Channel 4 Channel 2 Relay Output Relay K111 Channel 19 Channel 10 Relay Output Relay K112 Channel 20 Channel 10 Relay Output Relay K111 2 Display Channel B The letter B is the command to program the Model 706 to display a particular channel The format for the display channel command is as follows Bnnnn where Display channel command Number of channel Programming Example Enter the following statements into the HP 85 to program the Model 706 to display channel 7 REMOTE 718 END LINE OUTPUT 718 B7X END LINE The number of channels for a particular configuration is determined by the number of poles and Model 706 s daisy chained together the channel specified in the statement is greater than the highest available channel th
68. the type of scanner card used in each example Except for the specified values of the parameters selected front panel operation is similar in all scanning sequences For more detailed information concerning low current scans refer to the Model 7058 Instruction Manual 2 6 FRONT PANEL CLOCK OPERATION The CLOCK group on the front panel contains the TIME and DATE buttons The clock continues to run after the Model 706 is turned off This is because the clock s power circuitry is backed up by battery BT101 The time is shown in a 24 hour display format To display the time mode simply press the TIME button To set the time use the steps outlined in Table 2 13 Table 2 12 Low Current Scan Example Install a Model 7058 into slots 1 2 3 and 4 of the Model 706 Select appropriate line voltage and turn on the Mode 706 Press PRGM 6 Press 2 ENTER Press 0 0 1 FIRST Press 0 3 7 LAST Press INTERVAL 0 0 2 0 0 0 ENTER Press CHANNEL RESET Press SINGLE Press START STOP Step Action Refer to paragraph 2 2 2 Selects PROGRAM 6 Selects the 2 pole mode refer to para graph 2 9 for more information concerning front panel programs Programs channel 1 as the first channel Programs channel 37 as the last channel Programs the interval time for two seconds Turns on the CHANNEL LED selects the channel mode for display and resets
69. up OUTPUT 718 Z1X END LINE This statement and the previous nine step program saved and recalled one relay set up With the front panel CHANNEL but ton advance through to channel 5 and notice that the set up was indeed saved then recalled The Model 706 is capable of saving and recalling 75 relay set ups The commands to save and recall the relay set ups are as follows save 0 in all locations 01 saves set up and 201 recalls the set up that 101 saved 02 saves set up and 202 recalls the set up that 102 saved 103 saves set up and 203 recalls the set up that 103 saved 77 tt ve mr rr 4 n 75 saves a set up and 275 recalls the set up that 175 saved It is possible to save a relay set up in any order For example 2 can save a set up without having a set up saved by 11 I3 etc 10 ROM and LED Test J The letter J is the command that programs the Model 706 to go through many of the testing routines that are automatically performed upon power up When the self test command is sent the following actions are per formed A ROM Test B LED Test All front panel LEDs turn on for a short period of time C If the tests did not find anything wrong then the self test J byte in the status word is set to one If the test failed then the self test byte J is set to two The self test command is implemented with the following command sequence OUTPUT 718 JOX END LINE NO
70. 00 D1 02 or D3 Takes the Model 706 out of the display message mode The Model 706 is placed into the display mode that is programmed NOTE For the following notes refer to the display numbering sequence shown IBBBHRHB 1 The first character must be a plus minus decimal point or a 1 or it will be ignored 2 Characters 2 through 7 will accept any displayable ASCII character Any character not displayable will appear as a segment segment is shown as follows d segment 3 The maximum number of characters that can be sent is 7 Programming Example To display the message use single scan enter the following program into the HP 85 PROGRAM 5 10 REMOTE 718 END LINE Set the Model 706 to remote 20 CLEAR 7 END LINE 30 OUTPUT 718 D4 USE X END LINE 40 WAIT 1000 END LINE 50 OUTPUT 718 D4 SINGLE X END LINE 60 WAIT 1000 END LINE 70 OUTPUT 718 D4 SCAN X END LINE 80 WAIT 2000 END LINE 90 GO TO 30 END LINE 100 END END LINE Clears the Model 706 Displays USE on 706 Wait one second Displays SINGLE on 706 Wait one second Displays SCAN on 706 Wait two seconds Go to line 30 End of program NOTE Make sure there is a space in the program bet ween D4 and the message Otherwise an erratic display will result When the RUN key is pressed the Model 706 displays the following message __ 5laBLE 3 14 SEAn Disp
71. 05 65 1 3994 335 6 fon 87 3v 8c ge 2192 8i 619299 58799 Sv 8c 8i 39vd 335 4 5 I pc 3402 6 cum aug qIH bEISSECL DEILEUSIEEPIEUE EIS tueu rISEIP egccrpRcLLILLEE jJ P e 3NOZ EX ILI EIL ERAN S GEI SN 2 SSE B 2 950 lt 335 07 09 OS Op OF 06 O i 08 Dd 0905 Oe TD at ZV 3NOZ Eus AE a 4 33 UNO 719120 HOLY 1 120 19420 4 lt 2 gt 2 SQ9cvf 02108 0409 os gb g az g 04 09 05 Qv GE ge atr 992 040905 ae ae az al ES 3 Zi vj f 1 eie 7 IV 3NOZ 4 39vq 335 EI E ES SE ee E a ICE TH EFL BS ME 23 IH 3NOZ oom eee Le ee 39vd 335 Co 5952 40 _ zy x 712 DIE Y 2 Si Cee 7 T LTNBERENL D706 166 H 9 4 a a 2 a y PAGE 2 5 tthe 05 9 62 9 3eeus 991 904 ON uje1beig
72. 1V U421 pin 12 4V 1V U421 pin 15 4V 1V U421 pin 16 4 1V U421 pin 19 4V 1V U422 pin 2 4V 1V U422 pin 5 4V 1V Required Conditions Program the Model 706 to scan channels 1 through 10 at a two second interval rate NOTE All the steps in Table 5 8 are referenced to Analog Common Interconnect board supply When the mainframe is scan ning channel 1 Otherwise OV When the mainframe is scan ning channel 2 Otherwise OV When the mainframe is scan ning channel 3 Otherwise OV When the mainframe is scan ning channel 4 Otherwise OV When the mainframe is scan ning channel 5 Otherwise OV When the mainframe is scan ning channel 6 Otherwise When the mainframe is scan ning channel 7 Otherwise OV When the mainframe is scan ning channel 8 Otherwise OV When the mainframe is scan ning channel 9 Otherwise OV When the mainframe is scan ning channel 10 Otherwise OV SECTION 6 REPLACEABLE PARTS 6 1 INTRODUCTION This section contains replacement parts information schematic diagrams and component location drawings for the Model 706 scanner 6 2 PARTS LIST Parts are listed alpha numerically in order of their circuit designations Table 6 1 contains a list of the recommended spare parts Table 6 2 contains an index of the schematic diagrams and component l
73. 4 and is referred to as a daisy chain con figuration One of the Model 706 scanners is programmed by user choice as the master control instrument of the configuration The other Model 706 scanners are programmed as the slaves As slaves the front panel controls of these instruments are locked out not functional except for the power switch front panel Program 90 and 91 The power switch is functional but when power is cycled the slave instrument powers up to the slave condition The only method out of the slave condition is to activate Program 90 or 91 For complete details concerning front panel programs refer to paragraph 2 9 In this example the master Model 706 will be programmed to scan 500 channels The equipment required for this example is shown in Table 2 9 For the sake of simplicity we will use Model 7056 general purpose scanner cards for this example To help illustrate this daisy chain example we will choose the following parameters 1 First Channel is 1 2 Last channel is 500 3 Interval time is 0 2 seconds 4 Number of poles is 2 5 Use continuous scan mode Table 2 9 Required Equipment for Daisy Chain Example Scanner Mainframes Scanner Cards Cables 2 10 Specification General Purpose BNC to BNC Keithley 706 Keithley 7056 Keithley 7051 5 Use the steps outlined Table 2 10 to program the daisy chain configuration for the preceding parameters Upon the actuation of
74. 5 0 1 ENTER Recalls relay set up 01 20 Press CHANNEL CHANNEL CHANNEL Pressing the CHANNEL button while in the inspect mode advances the display to the next closed crosspoint When the last closed crosspoint of a set up is reached pressing CHAN NEL displays the first closed crosspoint of the set up 21 Press RESET Resets Model 706 22 Press PRGM 5 0 2 ENTER Recalls relay set up 02 23 Press CHANNEL CHANNEL CHANNEL CHANNEL Displays all the closed crosspoints of relay setup 02 Then displays first closed crosspoint 24 Press RESET Resets Model 706 25 Press 5 0 3 ENTER Recalls relay set up 03 26 Press CHANNEL CHANNEL CHANNEL CHANNEL Advanced to and displays all the closed crosspoints of relay set up 03 Then loops back to the first closed cross point 27 Press PRGM 9 3 Takes the Model 706 out of the in spect mode and displays get out for sec teow BEL puk o o U P C 28 Press CHANNEL CHANNEL CHANNEL This step shows that when the Model 706 is cut of the inspect mode pressing CHANNEL advances the display to the next channel whether it is open or closed While in the in spect mode pressing CHANNEL advances the display to the next closed crosspoint gt o NOTE Program 93 may also be used in the normal mode out of matrix in the normal mode the closed channels are displayed the inspect mode pressing CHANNEL ad vances and displays the next closed chann
75. 706 implements this command in the appropriate bus response mode as stated in paragraph 3 5 5 3 4 2 Universal Commands The IEEE 488 universal commands are sent when the line is low true There are six universal commands and their effect on the 706 operation is described as follows 1 DCL Device Clear The DCL command is used to clear the 706 thereby setting it to a known state Pro gram memory is cleared of all previously stored data when a DCL or SDC command is received The buffer is set to location one DCL Programming Example Using front panel controls close channels 1 through 5 on the Model 706 and select the continuous program mode Now enter the following statements into the HP 85 REMOTE 718 END LINE CLEAR 7 END LINE When the END LINE key is pressed after CLEAR 7 the Model 706 reverts to the power up default conditions which are listed in Table 3 5 This means that all five channels that were closed are now open and the instrument is in the step pro gram mode For the state of the other Model 706 parameters refer to Table 3 5 2 LLO Local Lockout The LLO command is sent by the controller to remove the Model 706 from the local operating mode Once the instrument receives the LLO command all the front panel controls except POWER ON OFF are locked out The REN bus line must be low true before the instrument responds to a LLO command LLO Programming Example This sequ
76. 8303008 Fax 39 2 48302274 JAPAN Keithley Instruments Fat East KK Aibido Bldg 7 20 2 Nishishinjuku Shinjuku ku Tokyo 160 81 3 5389 1964 Fax 81 3 5389 2068 NETHERLANDS Keithley Instruments BV Avelingen West 49 4202 MS Gorinchem 31 0 183 635333 Fax 31 0 183 630821 SWITZERLAND Keithley Instruments Kriesbachstrasse 4 8600 D bendorf 41 1 8219444 Fax 41 1 8203081 TAIWAN Keithley Instruments Taiwan 1 Ming Yu First Street Hsinchu Taiwan R O C 886 35 778462 Fax 886 35 778455 Model 706 5 Instruction Manual 1983 Keithley Instruments Inc Test Instrumentation Group All rights reserved Cleveland Ohio U S A Fifth Printing April 1991 Document Number 706 901 01 Rev E SPECIFICATIONS GENERAL DISPLAY Seven 0 5 LED digits with decimal point function and IEEE status annunciators INTERNAL CLOCK Displays hours minutes seconds or date month less than 1 minute month error typical BATTERY BACKUP Rechargeable 3 6V nickel cadmium 1 month retention of data with unit turned off OPERATING ENVIRONMENT 0 to 50 C 0 to 80 relative humidity up to 35 C STORAGE 25 C to 65 C CONNECTORS Four BNC TTL compatible External Trigger Alarm Out Serial In Channel Ready Serial Out CAPACITY Ten plug in cards per mainframe EXPANSION CAPACITY Daisy chain allows up to 4 SLAVE units with 1 MASTER unit SWITCHING R
77. 8th 2 7 DETAILED FRONT PANEL CONTROLS DESCRIP TION 1 POWER ON OFF The On Off switch operates on the push push principle Depressing this button turns the in strument on Once the instrument is on pressing releas ing this button turns the instrument off When the Model 706 is turned on it goes through a power up sequence as outlined in paragraph 2 3 When the power up sequence is complete the Model 706 displays the NIE DIF a where 01 Channel Number One F First Channel o Channel Open H H channel 1 was previously programmed as the first channel last channel or both it is displayed as such This is because the first and last functions are battery backed up and not affected by power up NOTE If upon power up the Model 706 displays the slave or no loop message refer to paragraphs 2 9 11 and 2 9 12 activate Program 90 return the Model 706 to normal operating conditions To activate Program 90 press PRGM 9 0 To identify the previous state of the functions that are not affected by power up simply activate the desired function When the function is activated the previous state for that function is displayed Refer to paragraph 2 5 1 for informa tion concerning the actuation of the desired function Refer to Table 2 2 for power up default conditions CHANNEL The CHANNEL button selects the channel mode for display The channel number is displayed on the front panel as a two digit numbe
78. 9914 RELAY DRIVE AND DISPLAY BOARD BUSS BUFFER STROBE LINES 0000 8k 8 ROM 2764 DFFF 8k 8 ROM 2764 FFFF Figure 4 2 Model 706 Memory Map to octal latches U421 through 0438 The address fines AO through A3 are buffered by U118 and that output is decoded by U111 U112 and U119 This information is the clock input for each octal latch When the appropriate information arrives pulse the corresponding octal latch releases its data to the proper current drivers which in turn drive the relays on the cards Pins 25 through 33 connector 1020 transmits the buffered parallel data into the latches Pins 3 through 20 are the individual clocks for each octal latch 4 4 DISPLAY CIRCUIT The display data is routed from the VIA on PAO through PA7 by way of connector P1010 The data is updated at a 1kHz rate which means each digit is on for Imsec Each update begins by presenting new segment information on the VIA I O bus PAO PA7 and yields a clock pulse on CA2 The clock pulse inputs to U203 and shifts a digit enable bit to be enabled Every eight times the display is updated a digit enable bit is generated at PB3 and is routed to the enable data input of the shift register The first four digit drivers drive the rows of the switch matrix The switches are arranged in a four by six matrix The seg ment drivers are 201 through Q208 In addition to driving the various segments they
79. ATE 100 channels second 10ms programmable to 1 channel 16 minutes 999 999s RELAY DRIVE 4A minimum POWER 90 125V or 195 250V internally selected 50Hz to 400Hz 75VeA maximum DIMENSIONS WEIGHT 178mm high x 438mm wide x 448mm deep 7 x 17 1 4 x 17 3 8 Net weight 8 6kg 19 1 ACCESSORIES AVAILABLE Mode 7008 3 488 Cable 0 9m 3 ft Model 7008 6 1 488 Cable 1 8m 6 ft Model 7010 488 Adapter for Model 85 Computer Model 7024 1 Triaxial Cable 0 3m 1 ft Model 7024 3 Triaxial Cable 0 9m 3 ft Model 7024 10 Triaxial Cable 3 0m 10 ft Model 7051 2 BNC to BNC Cable 0 6m 2 ft Model 7051 5 to Cable 1 5m 5 ft Model 7052 4 x 5 Matrix Card Model 7053 High Current Scanner Card Model 7054 High Voltage Scanner Card Model 7056 General Purpose Scanner Card Model 7057A Thermocouple Scanner Card Model 7058 Low Current Scanner Card Model 7059 Low Voltage Scanner Card Model 7061 Universal Interface Card Model 7068 Fixed Rack Mounting Kit for 706 Model 7069 Slide Rack Mounting Kit for 706 Specifications subject to change without notice IEEE 488 BUS IMPLEMENTATION Multiline Commands DCL LLO SDC GET GTL UNT UNL SPE SPD Uniline Commands IFC REN EOI SRQ ATN Interface Functions SH1 L4 LEO SR1 RL1 PPO DC1 DT1 Programmable Parameters Display Mode Output Format EOI SRO First Last Open
80. Continuous scan mode is set to inactive SINGLE Single scan mode is set to inactive START STOP Start stop function is set to stop Digital 1 outputs are set to 000 the inputs are not affected by PROGRAM 99 Date is set to American date format Program 0 Program 1 Program 2 Settle time is set to 000 005 seconds Program 3 Primary address is set to 18 Program 4 Save relay set up is cleared Program 5 Recall relay set up is cleared Program 6 Pole configuration is set to 2 Program 7 Alarm time is set to 00 00 00 Program 8 Self test is not affected by PROGRAM 99 Program 90 PROGRAM 90 is performed Program 91 PROGRAM 91 is not performed Program 92 PROGRAM 92 is not performed Program 93 PROGRAM 93 is disabled by PROGRAM 99 Program 94 PROGRAM 94 is set to inactive Program 99 PROGRAM 99 is used to reset the Model 706 FIRST Programmed first channel is set to 1 LAST Programmed last channel is set to highest available channel When the Model 706 is in the slave mode PROGRAM 92 activating PROGRAM 99 has no effect 12 29 2 30 SECTION 3 IEEE BUS 3 1 INTRODUCTION This section contains information necessary to operate the Model 706 over the IEEE 488 bus The Model 706 has a stan dard IEEE 488 interface that allows the user to give com mands and read data via an external device All front panel programs and functions are available over the bus except
81. D LINE key is pressed the second time the Model 706 is placed in the matrix mode and the display is as follows D m This format is explained as follows nnn m O or C Where nnn is a three digit number displaying the column card and unit m is the row from 1 to 4 or c denotes open or closed As an example consider the following display 004 Denotes unit 1 001 through 050 denotes unit 41 004 Also denotes card 1 001 through 005 denotes 1 004 Also denotes column 4 2 denotes row 2 c denotes the crosspoint is closed Therefore the display 004 2 c means that the crosspoint of unit 1 card 1 column 4 row 2 is closed The programm ing statement that depicts this crosspoint is as follows OUTPUT 718 C0042X END LINE To display the previously programmed crosspoint on the Model 706s display enter the following statement into the HP 85 OUTPUT 718 0042 END LINE Now return the Model 706 to the 2 pole mode by entering the following statement into the HP 85 keyboard OUTPUT 718 A2X END LINE The 1 pole mode is available only on the Model 7056 scanner card On the card relay K111 is the output relay for the even channels and relay K112 is the output relay for the odd chan nels These relays close when the appropriate channel relays close In the 1 pole mode each channel relay on the 7056 scanner card controls two channels This is because they are
82. DISABLED PREFIX 70 STATUS PORT TRANSMITTED WITH PREFIX TRIGGER MODE TEST PASSED START ON X EO SENT PROGRAM ON LAST BYTE CONTINUOUS Figure 3 8 Status Word Format NOTES 1 status information contains three bytes These three bytes assume the decimal value previously set by the SRQ mode command 2 To make sure proper status is returned the status word should be read immediately after sending the command Otherwise instrument status may be changed from the front panel resulting in erroneous status information 3 The status word should not be confused with the SRO status byte The status word contains a number of bytes pertaining to the various operating modes of the instru ment The status byte is a single byte that is read by using the serial poll sequence and contains information on SRQ status and error or data conditions 3 8 FRONT PANEL PROGRAMS All the front panel programs described in paragraph 2 9 ex cept Programs 3 90 91 and 92 can be controlled over the bus For detailed examples and explanations of the front programs refer to paragraph 2 9 3 9 FRONT PANEL ERROR MESSAGES The process of programming the Model 706 involves the pro per use of syntax Syntax is defined as systematic arrangement of programming commands or languages The Model 706 must receive valid commands with proper syntax or it will 1 Ignore the entire command
83. E End oride ntify Wales Bus Response Mode 6 as Trigger MOdes uuu s usss EGRE ERRARE AP RE ERU Programmable Terminator Y _________________________ Status Byte Status _______ Front Panel Programs dudar md dd Front Panel Error IDDO BETOR xw NO Remote uq adco as suku gotta dd bd dp ac asa paa pus Scanning Programi kosa SECTION 4 OF OPERATION Introduction Term Power Supply MICIOCOIT DUIBE s ata M eed e aci RAN RR s papa a 488 Interface Circuitry EAR EE RE e bx mpg ss ERR E RR SECTION 5 MAINTENANCE Introduction 22545422 re d a RE E wax _________ Line Voltage Selection iaa ___________________________ Disassembly gt _______ ___________ Troubl
84. F i ZHSH SDI 1 2 IZOLIM 2 24 1 25 2201 20 20 e 0 c 5 N N 2201 0 5 530 0166 WOOD v 17 amp W3H3S 1 wawa Hild ie 911 6042 L ALL RESISTOR VALUES ARE IN OHMS UNLESS MARKED OTHERWISE K KILOHMS 2 ALL CAPACITOR VALUES ARE IN MICROFARADS UNLESS NOTED 3 O DENOTES FRONT PANEL CONTROL A N DENOTES DIGITAL COMMON ENTER m 05225 204 2 3 CANCEL 5221 Qs224 O CHANNEL 5201 LAST 25205 zi INTERVAL 05209 54 5213 PIOO un nme 0203 8 202 1000pF 16 CA2 SHIFT REGISTER 7 16 TAL 5V COMMON MATES WITH JIOIO SEE MOTHER BOARD SCHEMATIC 0705 106 PAGE 3 OF 3 ZONE F6 AND a 2 1 82020 0205 O10 R202B Q7 2 3 3K DATE 05213 0207 0208 O11
85. Film Resistor Network Thick Film Resistor Network Resistor 680 1096 W Compositon Thick Film Resistor Network Resistor 2 2k 5 Composition Resistor 5 1k 5 W Composition 8 stage shift register 4021 Quad 2 Input NOR 74LS02 8 stage shift register 14094 Hex Inverter 74LS04 Hex Inverter 74LS04 Table 6 5 Interconnect Board Parts List Location Keithley Desig Description Sch Pcb Part No Capacitor 10uF 25V Aluminum Electrolytic C4 3 A2 Capacitor 0 1uF 50V Ceramic Film D4 3 B3 Capacitor 0 1uF 50V Ceramic Film F4 3 C3 Capacitor 0 1uF 50V Ceramic Film G4 3 C3 Capacitor 0 1uF 50V Ceramic Film C4 3 D3 Capacitor 0 1uF 50V Ceramic Film D4 3 E3 Capacitor 0 1uF 50V Ceramic Film F4 2 E3 Capacitor 0 1uF 50V Ceramic Film G4 2 F3 Capacitor 0 1uF 50V Ceramic Film C4 1 G3 Capacitor 0 1uF 50V Ceramic Film E4 1 G3 Capacitor 10 25V Aluminum Electrolytic A4 3 A4 Capacitor 50V Ceramic Film D2 3 A4 Capacitor 50V Ceramic Film F2 3 B4 Capacitor O 1uF 50V Ceramic Film A2 2 C4 Capacitor 0 1uF 50V Ceramic Film C2 2 D4 Capacitor 0 1uF 50V Ceramic Film E2 2 E4 Capacitor 0 1uF 50V Ceramic Film F2 2 E4 Capacitor O 1uF 50V Ceramic Film B2 1 F4 Capacitor 0 1uF 50V Ceramic Film D2 1 G4 Capacitor 0 1uF 50V Ceramic Film B2 3 G4 Capacitor 0 1uF 500V Ceramic Disc A4 3 A2 Card Edge Connector D5 3 B2 Card Edge Connector E5 5 B2 C
86. For another test of the relay set up shut off power to the Model 706 for a few minutes Turn the instrument back on and press 5 0 1 ENTER Notice that the odd chan nels are closed and the even channels are open Thus even when power to the instrument was shut off the relay set up remained in memory To store an additional relay set up program the set up and press 4 0 2 ENTER This action saves the relay set up without disturbing the previousiy stored set up This can be done with up to 75 separate set ups The factory set values of Program 4 are all channels open and channel 1 is the programmed first and last channel NOTE Program 4 saves the entire relay set up program med on the Model 706 It does not save just the relay set up between the programmed first and last channels Program 4 also works in the matrix mode 2 9 6 Program 5 Recall Relay Set Up Program 5 is used to recall a previously stored relay set up Program 4 and 5 work in conjunction with each other Pro gram 4 is used to store relay set up while Program 5 is used to recall the relay set up that was stored using Program 4 Program 5 also recalls the programmed first and last channels along with the relay set up that was stored in the example of Program 4 the example of Program 4 10 channels were selected with the odd channels closed and the even channels open The set 2 21 was stored and then the 706 was reset
87. KEITHLEY Model 706 Scanner Instruction Manual Contains Operating and Servicing Information Publication Date April 1991 Document Number 706 901 01 Rev E Keithley Instruments Inc warrants this product to be free from defects in material workmanship for a period of 1 year from date of shipment Keithley Instruments Inc warrants the following items for 90 days from the date of shipment probes cables rechargeable batteries diskettes and documentation During the warranty period we will at our option either repair or replace any product that proves to be defective To exercise this warranty write or call your local Keithley representative or contact Keithley headquarters in Cleveland Ohio You will be given prompt assistance and return instructions Send the product transportation prepaid to the indicated service facility Repairs will be made and the product returhed transportation prepaid Repaired or replaced products are warranted for the balance of the origi nal warranty period or at least 90 days LIMITATION OF WARRANTY This warranty does not apply to defects resulting from product modification without Keithley s express written consent or misuse of any product or part This warranty also does not apply to fuses software non rechargeable batteries damage from battery leakage or problems arising from normal wear or failure to follow instructions THIS WARRANTY IS IN LIEU OF AL
88. L OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES NEITHER KEITHLEY INSTRUMENTS INC NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT INDI RECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES SUCH EXCLUDED DAMAGES SHALL INCLUDE BUT ARE NOT LIMITED TO COSTS OF REMOVAL AND INSTALLATION LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON OR DAMAGE TO PROPERTY KEITHLEY Keithley Instruments Inc 28775 Aurora Road Cleveland 44139 216 248 0400 Fax 216 248 6168 http www keithley com CHINA Keithley Instruments China Yuan Chen Xin Building Room 705 12 Yumin Road Dewei Madian Beijing China 100029 8610 2022886 Fax 8610 2022896 FRANCE Keithley Instruments SARL BP 60 3 all e des Garays 91122 Palaiseau C dex 31 6 0115155 Fax 31 6 0117726 GERMANY Keithley Instruments GmbH Landsberger StraBe 65 82110 Germering 49 89 849307 0 Fax 49 89 84930759 GREAT BRITAIN Keithley Instruments Ltd The Minster 58 Portman Road Reading Berkshire RG30 44 01734 575666 Fax 44 01734 596469 ITALY Keithley Instruments SRL Viale 5 Gimignano 38 20146 Milano 39 2 4
89. Model 7052 matrix card there are five columns and four rows Refer to Figure 2 5 Example 1 an example of a matrix crosspoint display consider the following 004 004 Denotes the 1 001 through 050 denotes unit 1 004 Also denotes card 1 of unit 1 001 through 005 denotes card 1 of unit 1 004 Also denotes column 4 of card 1 of unit 1 001 through 005 denotes the columns of card 1 of unit 1 1 2 ROWS 3 4 2 3 4 5 COLUMNS A TYPICAL CROSSPOINT ON THE MODEL 7052 MATRIX CARD CONSISTS OF A 3 POLE FORM A RELAY AS SHOWN ae 1 9 7 7 4 NN Lg L5 His Figure 2 5 Model 7052 Matrix Scheme 3 Denotes row 3 c Denotes the crosspoint is closed Therefore the display 004 3 c means that the crosspoint of unit 1 1 column 4 row 3 is closed Example 2 For another example consider a 4 x 50 matrix which would be 10 Model 7052 matrix cards with jumpers in stalled between the rows of each card A matrix display could be as follows where 048 Denotes unit 1 001 through 050 denotes unit 1 048 Also denotes 10 of unit 1 046 through 050 denotes card 10 of unit 1 048 Also denotes column 3 of card 10 of unit 1 046 through 050 denotes columns of card 10 of unit 1 4 Denotes row 4 c Denotes the crosspoint is closed Therefore the display 048 4c in a matrix means that the crosspoint of unit 1
90. ONE 6 TPfOIC 6y 7 13 UIOSPIN 400 Yr S10 EX yehe A006 14 2 ZONE Q9 8 O 2 Uit9 vsb 0 A005 15 T i 1 258 SC PAGE 270NE F2 74 538 16 6 27 3108 12 AOO3 17 J P 1018 UIAA PINIO z DECODER 2ZONE G2 OPER A002 18 BRN 14 20 AOOO BFFF 920 NI NNECT NOTES PAGE 2 ZONE OARD 0706 166 ALL RESISTOR VALUES ARE IN OHMS 7 _ UIO4 PINILI9 PAGE 3 ZONE AI Mee E MARKED K KILOHMS 9 2 20 C4 00 2 ALL CAPACITOR VALUES ARE IN 4000 MICROFARADS UNLESS OTHERWISE MARKED ipF PICOFARADS 5 5 ALL PUSHBUTTON SWITCHES ARE s 7446538 12 9 PUSHBUTTON OUT 3108 13 ye O 26V 1 5 DIGITAL COMMON his 009 wl 15 12 T POINT 5 _ DENOTES TEST PAGE 2 20NE ES 6 DENOTES FRONT PANEL CONTROL 35 RI29 o OE CLOCK CHIP 36 7 DENOTES REAR PAWEL MOUNTING OK 3j a J DENOTES MAINFRAME GROUND RISO x W GNO V 38 2 25 y op ORS 2 E 5 40 vite 117 214 13 56 RI27 6l Oh 6000 7FF UIOPIN 230 9628 DECODER oss ES 2 Jona Z PASE FONE ES Yap PAGE 2 20NE ESI 5
91. Oc OD 08 Ud D9 DS Ol 4T Dr 0304 083 00509 06 2 335 69 H21v1 20 HOLV1 79120 Bp aes HOLY 4vioo 9 1 1 t PL Cob Bern 224 02080 0902 gt ac ae gl Fa 98 0249 06 02 Qe 01 10098 e e 914 reste Sf fT EL NY DES eye Bl 28 8 T EM M 8 po o IEEHEt u et F J e T 11 n 21 3 02 mms J 6 2 39 d 335 cll F i 1 Pj T ees d 82 TT pels h E 5 rt ae Be ES eee 72 NO spe ur 9 60 xum sem of 0706 166 H o a a a 2 v 3 OF 3 mu KEITHLEY Service Form Model No Serial No Date Name and Telephone No Company List all control settings describe problem and check boxes that apply to problem 2 Intermittent Analog output follows display 1 Particular range or function bad specify IEEE failure J Obvious problem on power up J Batteries and fuses OK 3 Front panel operational LJ All ranges or functi
92. PNP Silicon Transistor 2N4355 TG 90 PNP Silicon Transistor 2N4355 TG 90 PNP Silicon Transistor 2 4355 TG 90 PNP Silicon Transistor 2N4355 TG 90 PNP Silicon Transistor 2N4355 TG 90 PNP Silicon Transistor 2N4355 TG 90 PNP Silicon Transistor 2N4355 TG 90 Thick Film Resistor Network TF 165 1 Thick Film Resistor Network TF 77 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Switch SW 435 Table 6 2 Display Board Parts List Cont Circuit Location Keithley Desig Description Sch Pcb Part No 223 Switch B2 F3 5224 Switch B2 F3 225 Switch A2 G3 1201 MOS to LED Segment Driver 75392 SEV B3 11202 MOS to LED Segment Driver 75492 SEV G3 U203 8 bit shift register 5164 SEV D3 U204 MOS to LED Segment Driver 75492 E DZ W201 W202 Jumper Jumper Table 6 3 Mother Board Parts List Location Keithley Desig Description Sch Pcb Part No Battery 3 8V 100mAH Nicad 4 1 4 36 G4 2 B3 Capacitor 0 1uF 50V Ceramic Film C5 2 C3 237 1 Capa
93. S BYTE END EO 3 2 488 BUS LINES As shown in Figure 3 1 the signal lines on the IEEE 488 bus are divided into three groups management handshake and data lines The management and handshake lines ensure that proper data transfer and bus operation takes place while the data lines handle the bus information Each of the bus lines are low true TO OTHER DEVICES DEVICE 1 ABLE TO DATA BUS 2 ABLE TO TALK AND 4 LISTEN DATA BYTE TRANSFER CONTROL lt DEVICE 3 ONLY ABLE TO LISTEN PRINTER GENERAL 4 ONLY ABLE TOTALK D101 8 DATA 8 LINES DAV NRFD HANDSHAKE IFC ATN SRQ BUS MANAGEMENT REN EOI Figure 3 1 Bus Structure 3 2 1 Bus Management Lines The bus management group consists of five signal lines that send certain single line bus commands and ensure an orderly transfer of data The five signal lines are 1 ATN Attention The state of the ATN line determines whether information placed in the data bus by the con troller is to be considered data or a command 2 REN Remote Enable Setting the REN line low true sends the REN command and sets up the instrument on the bus for remote operation If REN is followed by the primary address of the Model 706 then it will be the only instrument to be placed in the remote mode REN Programming Example
94. SINGLE Actuation of the SINGLE button selects the single scan mode and turns on the single LED The single scan mode allows the user to scan through the programm ed channels at the programmed interval rate one time The single scan mode is initiated upon the actuation of the START STOP button or upon receiving the appropriate external trigger pulse Pressing the START STOP button during a single scan se quence stops the scan at the presently displayed channel To continue the scan sequence simply press the START STOP button START STOP The START STOP button is an alter nate action control that has three functions The three functions are the start function stop function and the step scan mode These functions are described as follows A START The start function of the START STOP but ton initiates the selected scan mode When all the parameters interval time first and last channels scan mode etc of a multi channel configuration have been programmed and the user is ready to scan the chan nels press the START STOP button to initiate the scan sequence During the scan sequence the START STOP LED is activated B STOP The stop function of the START STOP button stops the previously initiated scan sequence That is pressing the START STOP button during a scan se quence stops the sequence at the presently displayed channel and turns off the START STOP LED The STOP function is active only during a scan sequence C
95. Sending a trigger over the bus while in the matrix mode acecoama alana ith h cont displays the Recall message along with the present buffer location Sending a trigger in the appropriate trigger mode over the bus while in the matrix mode and the Recall message is displayed advances the instrument to the next buffer location Refer to paragraph 2 9 6 Programming Example In the following programming ex ample the 706 is programmed to scan channels 1 through 50 at a 500msec rate upon receiving a GET com mand 3 25 10 718 20 CLEAR 7 END LINE 30 OUTPUT 718 D0F1L 50W 5T2P2X END LINE 40 TRIGGER 718 50 DISP PRESS CONT TO STOP PROGRAM 60 PAUSE 70 CLEAR 7 80 END COMMENTS Programs Model 706 into the remote mode Clears Model 706 Programs the Model 706 for display channel mode channel 1 as first channel channel 50 as last interval time is 500msec con tinuous scan mode and start on GET mode Provides GET command Displays message on HP 85 Program pause Clears Model 706 End of program Press the RUN key on the Model 706 to start the program After the RUN key is pressed the Model 706 scans channel 1 through 50 at the 500msec rate The start on GET command in T2 line 30 programs the Model 706 to start the scan upon receiving GET command In this program the GET com mand is provided by the TRIGGER statement
96. TES 1 Other operating parameters are not affected by the command 2 RAM is not tested by the J0 command but is tested upon power up 11 EOI End or Identify K The letter K is the command that programs the Model 706 to either send or not send the last byte out on a multiple byte sequence response of the instrument may be programmed as follows KO Send during last byte K1 Send Upon after receiving SDC DCL the 706 will the mode Programming Example The EOI will suppressed with the following statement sequence REMOTE 718 END LINE OUTPUT 718 K1X END LINE Note that the HP 85 does not rely on EOI to mark the end of the data transmission Some controllers however may re quire that be present at the end of transmission NOTE In the G2 and G3 prefix modes EOI is transmit ted only at the end of the complete program memory transmission not during the last byte of each IEEE buffer or memory location 12 Set Last Channel L The letter L is the command to program a specific chan nel as the last channel The last channel must be at least one channel ahead of the first channel otherwise the scan sequence will not operate properly For example if the first channel is programmed to be 5 then the last channel must be specified as at least 6 The format for set last channel configura
97. The range of octal output data that can be entered on the front panel display is 0 to 377 The maximum octal data is 377 which corresponds to 11111111 in BCD If the front panel data is entered as 377 then the digital 1 0 out put data is 11111111 To initiate Program 0 use the following procedure 1 Press PRGM and the following is displayed seconds Ouk After the Out In message is displayed the Model 706 displays the following 000000 Where the first three digits represent the digital output octal and the last three digits represent the digital inputs in octal NOTE The digital 1 0 inputs are defined by the connec tions on the input pins With no connections on the input pins located on the rear panel the in puts are undefined The digital 1 outputs are programmed by using Program 0 Press 0 7 7 ENTER This action programs the output bits on the digital port for 00111111 4 BUE 1 2 9 2 Program 1 Date Format Program 1 is used to select one of two date formats The two formats are the american date format and the international date format The display format is as follows American mm dd International dd mm where mm month dd day To enable Program 1 and select the international date format use the following procedure 1 Press PRGM Selects program mode and displays Pro NOTE The flashing question mark on the display pro mpts the user for the decimal
98. V supply terminal 6V terminal referenced to the terminal 5 6 Set line voltage as required Continuity 46V 5 5 7V to 6 3V See paragraph 5 3 Remove fuse to check Plugged into line receptacle power is on Line voltage 100 120 220 or 240V 6V supply PASS 5 5 3 Power Supply Checks If a problem exists in the Model 706 the power supply should be checked initially The power supply checks are listed in Table 5 5 Use the DMM recommended in Table 5 4 to check the various test points It is also a good idea to check each supply level with an oscilloscope to be sure there is little or no noise or ripple NOTE The thermal breaker TB 3 that is in series with the AC line and the power supply opens the circuit when the temperature inside the instrument reaches 65 C This action shuts off the power to the instrument In this case turn the Model 706 off and _ let it cool down for approximately one hour Then turn the power back on The thermal breaker should return to norma operation which means the circuit is closed 5 5 4 Digital Circuitry Checks Problems with the digital circuitry could cause erratic opera tion Check the various components associated with the digital circuitry including the IEEE interface using the infor mation in Table 5 6 5 5 5 Display Board Checks Check the display board per Table 5 7 Table 5 6 Digital Circuitry Checks Power On U105 pin 8 5 25V
99. Xx X X XX XX X Xx gt x gt x gt gt gt X X X XX X X XX X x gt x gt x gt gt x gt 3 17 SRQ Programming Example The bus response mode may be programmed as follows REMOTE 718 END LINE OUTPUT 718 M1X END LINE The SRQ format is as follows Mnnn Where M Bus response mode n 0 to 255 base 10 in base 2 NNNNNNNN SRA MASK 1 1 INTERVAL TIMER IDDCO SCAN ALARM IDDG OR NO REMOTE MER ALARM SCAN NO IDDCO IDDC RE MOTE SRQ Mask In order to facilitate SRQ programming the Model 706 makes use of a mask when generating a SRQ When the appropriate bit in the mask is set the instrument gen erates a SRQ when those particular conditions exist The SRQ mask byte format is shown Bits within the mask can be con trolled by sending the ASCII character M followed by a deci number 0 to 63 Table 3 9 lists the conditions that cause a SRQ for each command parameter Note that the in strument can be programmed for one or more conditions simul taneously 3 5 6 Trigger Modes Triggering is used to tell the Model 706 to initiate the program mode sequence single continuous or step The trigger stimu lus may come from commands sent over the bus through the external input or by the front panel START STOP button Trig gering may be either to start the program mode sequence or stop the sequence The trigger modes are as follows
100. _ le 23 5 74 Tn 22 77 US 23 702 6 57 22 193 UHT 8 4 3 04 58 288 1581 yz 230 UUB 25 0 64 33 A 59 151 84 441 tla 62 435 20 237 140 80 68 JIO 84 257 28 12 20 244 21 54 44 42 OZO 65 Kiet Al 22 1244 0 LUS 1 F4 42 50 69 u 22 0 107 22 225 12 64 2258 LIED ARN 23 6535 2406 x 23 AS 77 5 5 24 Fa AA oF 25 24 061 75 47 6 24 M Teo 2 lt 2 37 L422 44 26 72 84 24 106 42 72 330 14 26 FE 107 7 2 27 747 77 702 _ roce 708 426 4 778 a nde Aes 1748 Wc Eres gt 22 132 060 LRAD 7 __ _ j 1157 ZE 20 om m UE 7 5 756 j ee 53 122221 74 52 7 ses C5 75 56 mts A hut DS j Lew 5 oo op ee Za _ Jo T Mla 75 o O O gg E j A RC oe tpl 757 i eI L78 _ 4 1d O jS NEN ee NI Uwe n cquo drei Dieu uen reme Sa
101. _______ ___________ ________ 2 15 Maximum Relay Drive Current from Mainframe 2 16 CANCEL Funelion CRUS GS d RC CORR ease Quy 2 17 Summary ot Front Panel Programs counsel Vaud rk recae Rs ERE E ERA D Up 2 18 Scanner Card Pole Configuration TM usa S 2 19 Matrix Unit Number Display LIST OF TABLES CONT 2 20 Matrix Card Number Display 2 21 Program 99 Reset Condition sick cous sae XA eed FRATRE EX 3 1 85 IEEE 488 BASIC 5 1 ence nen hh 3 2 Model 706 Interface Function 3 3 IEEE Command se DR RA AUR RR 3 4 IEEE Bus Connector Contact Designations 3 5 Power Up DCL and SDC Default Conditions 3 6 Device Dependent Commands Not Available to the Front Panel 3 7 Model 706 Device Dependent Commands
102. all instruments connected to a particular channel Then the pulse that appears at the CHANNEL READY output can be used to inform another instrument e g DMM printer or even the Model 706 that the settle time is complete To initiate Program 2 use the following procedure 1 Press PRGM This selects the program mode and displays Pro 2 Press 2 Selects Program 2 and displays the following for approximately 0 5 seconds After the settle message is displayed the Model 706 displays 000005 2 20 This display is shown is seconds The minimum settle time is 000 005 seconds and the maximum settle time is 999 999 seconds The settle time is not affected by power up This is because the circuitry is backed up by battery BT101 _ Programming the settle time is a simple procedure For exam ple use the following procedure to program the settle time to 001 010 seconds 1 Press PRGM Selects the program mode and displays Pro 2 Press 2 Selects Program 2 and displays the settle message described in step 2 of the previous procedure Then the previously programmed settle time is displayed 3 Press 0 0 1 0 1 0 ENTER This step loads 1 01 seconds as settle time on the display Pressing ENTER pro grams 1 01 seconds as the settle time and the Model 706 reverts to the channel mode at the previously displayed channel NOTE Initiating a new interval time resets the settle time counter If
103. an date format for November 24 1 Press PRGM Selects program mode and displays Pro 2 Press 1 Selects Program 1 turns off the DATE LED and displays the following AOE 0 3 Press ENTER The american date format was selected in the previous procedure Pressing ENTER displays the date in the american date format and turns on the DATE LED 4 Press 1 1 2 4 ENTER This action programs the date for November 24 and displays the following _ 11289 2 9 3 Program 2 Relay Settle Time Program 2 is used to program the amount of time 000 005sec to 999 999sec the relays and all the measure ment equipment connected to a particular channel has to set tle out Do not confuse the settle time with the interval time The interval time is the selected time a relay is closed in a scanning sequence The interval time overrides the settle time That is if the settle time is set to two seconds and the interval time is set to one second the scan sequence will operate at one second interval rate Therefore the settle time must always be shorter in duration than the interval time At the end of the programmed settle time the Model 706 out puts a negative going TTL level pulse with a duration of greater than 10usec This pulse appears at the CHANNEL READY output The CHANNEL READY output is BNC con nector located at the rear panel of the Model 706 The pur pose of the settle time program is to have a selectable settle time for
104. ard Edge Connector G5 3 C2 Card Edge Connector A6 2 D2 Card Edge Connector C6 2 D2 Card Edge Connector D6 2 E2 Card Edge Connector F6 2 F2 Card Edge Connector H6 2 F2 Card Edge Connector B6 1 G2 Card Edge Connector D6 1 H2 CS 454 2 Resistor 220K 5 1 4W Composition A4 3 A2 R 76 220K Darlington Transistor Array ULN2003 E4 3 B2 IC 206 Darlington Transistor Array ULN2003 F2 3 C2 206 Darlington Transistor Array ULN2003 B4 2 C2 206 Darlington Transistor Array ULN2003 C4 2 D2 206 Darlington Transistor Array ULN2003 E4 2 D2 IC 206 Darlington Transistor Array ULN2003 F4 2 E2 IC 206 Darlington Transistor Array ULN2003 B4 1 F2 IC 206 Darlington Transistor Array ULN2003 C4 1 G2 206 Darlington Transistor Array ULN2003 E3 1 G2 IC 206 Not Used Darlington Transistor Array ULN2003 D4 3 B3 IC 206 Darlington Transistor Array ULN2003 E4 3 C3 206 Darlington Transistor Array ULN2003 G4 3 C3 206 Darlington Transistor Array ULN2003 C4 2 D3 IC 206 Darlington Transistor Array ULN2003 D4 2 E3 206 Darlington Transistor Array ULN2003 E4 2 E3 IC 206 Darlington Transistor Array ULN2003 G4 2 F3 206 Darlington Transistor Array ULN2003 C4 1 G3 IC 206 Darlington Transistor Array ULN2003 D4 1 G3 206 Not Used Octal D Type Flip 74C374 D2 3 A4 339 Octal D Type Flip 746374 2 3 4 339 Octal D Type Flip 74C374 2 3784 339 Table 6 5 Interconnect Boa
105. ats U7 Sending the U7 command outputs the interval time The interval time can be sent with or without a prefix depen ding on the present prefix mode G Refer to the flowchart in Figure 3 6 for the sequence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for in formation concerning the prefix modes and their for mats U8 Sending the U8 command outputs the programmed first and last channel The programmed first and last channel can be sent with or without a prefix depending in the present prefix mode G Refer to the flowchart in Figure 3 6 for the sequence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for information concern ing the prefix modes and their formats U9 Sending the U9 command outputs the previously called buffer location The buffer location can be sent with or without a prefix depending on the present prefix G mode Refer to the flowchart in Figure 3 6 for the se quence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for information concerning the prefix modes and their formats FORMAT OUTPUT ACCORDING TO U MODE FORMAT OUTPUT ACCORDING TO G MODE DO NOT SEND PREFIX OUTPUT Figure 3 6 U and G Mode Sequence 3 6 STATUS BYTE FORMAT The status byte contains information relating to data and er ror conditions within the instrument The controller obtains the status byte by using the serial polling sequence SPE described in paragraph 3 4 2 Onc
106. cing the rear panel of the Model 706 the scanner card component side should face the left side of the slot Make certain the card edges are aligned with the top and bottom grooves in the slot 2 Once the card is aligned with the grooves insert the card to its full depth into the Model 706 Make certain the card is properly seated into the connector on the interconnect board When the card is fully inserted the locking tabs on the card should be placed in the locked position as shown in Figure 2 1 3 To remove a scanner card first turn the Model 706 off and disconnect the line cord Unfasten the locking tabs by pull ing both tabs outward Grasp the end of the card and pull it out of the mainframe NOTE Handle the scanner cards by the edges to avoid contaminating them with dirt body oil etc WARNING Do not insert scanner cards that have metal clamps into the Model 706 Otherwise a shock hazard will be present Only use scanner cards that have plastic clamps Table 2 2 Slot Number Channel Number Assignment Slot Channels Number Inciuded 1 2 3 4 5 6 7 8 9 10 Does not include other units in a daisy chain configuration see paragraph 2 5 4 example 4 Table 2 1 Line Voltage Setting Input Jumper Voltage Setting 195V 250V Not Installed Line Fuse F101 Varistor VR2 90V 125V Installed 1 25A 1 25A 250V 250V 0 6A 250V 0 6A not 250V installed 2 1
107. citor 0 1uF 50V Ceramic Film C6 2 C3 C 237 1 Capacitor 50V Ceramic Film B4 2 D3 C 237 1 Capacitor 0 1uF 50V Ceramic Film E2 1 E3 C 237 1 Capacitor 10uF 25V Aluminum Electrolytic D3 2 E3 314 10 Capacitor 0 1 50V Ceramic Film 3 2 C 237 1 Capacitor 0 1uF 50V Ceramic Film 3 2 3 237 1 Capacitor 0 1uF 50V Ceramic Film A2 1 F3 C 237 1 Capacitor 0 1uF 50V Ceramic Film G6 2 B4 237 1 Capacitor 0 1uF 50V Ceramic Film G6 2 C3 C 237 1 Capacitor 0 1uF 50V Ceramic Film E5 2 C4 C 237 1 Capacitor 0 1uF 50V Ceramic Film E6 2 C5 C 237 1 Capacitor 0 1 50V Ceramic Film G1 2 C4 C 237 1 Capacitor 0 1uF 50V Ceramic Film A4 2 D4 C 237 1 Capacitor 3ppF 1000V Ceramic Disc A4 2 D4 64 33 Capacitor 33pF 1000V Ceramic Disc 1 2 04 C 64 33p Capacitor 0 1uF 50V Ceramic Film E4 1 F4 237 1 Capacitor 4 7uF 25V Aluminum Electrolytic G5 1 F4 C 314 4 7 Capacitor 10pF 1000V Ceramic Disc G4 1 F4 Capacitor 22pF 1000V Ceramic Disc F5 1 F4 Capacitor 1000 1000V Ceramic Disc E1 2 F3 C 64 1000p Capacitor 1uF 50V Ceramic Film G5 1 F4 C 237 1 Capacitor 1uF 50V Ceramic Film C6 1 G4 C 237 1 E4 1 E4 C 237 1 B3 2 D3 06 2 04 6 2 04 Capacitor 50V Ceramic Film Diode Silicon 11914 Bridge Rectifier VM18 Bridge Rectifier VM18 Not Used Rectifier Silicon 1N4139 E3 1 D5 Rectifier Schottky Barrier 185820 E3 1 D5 Diode Silico
108. ction TESI Software Consideration vac ceo se ooa Cede xc RR REC ORCI C i HP 85 BASIC dean e Vo Interface Function a dnd NR RR Mode 706 Interface Commands ess IEEE 488 Bus Bus Management eee eee Ped rame Reed ea d c pid Handshake Data System Set Up Procedure 3 4 3 4 1 3 4 2 3 4 3 3 5 3 5 1 3 5 2 3 5 3 3 5 4 3 5 5 3 5 6 3 5 7 3 5 8 3 6 3 7 3 8 3 9 3 9 1 3 9 2 3 9 3 3 10 4 1 4 2 4 3 4 4 4 5 5 1 5 2 5 3 5 4 5 5 5 5 1 5 5 2 5 5 3 5 5 4 5 5 5 5 5 6 5 6 5 7 6 1 6 2 6 3 6 4 6 5 Bus Commands uuu AX EROR deca d Un S Du MAC RR doa Universal Commands EXER __ aq a Addressed Commands cosa 556 4535 45 in gei Device Dependent Display Mod veces ________ gt S Program Scan Mode CER MEE IN
109. d is provided by the DC func tion DT Device Trigger Function The ability for the Model 706 to have its basic operation is provided by the DT function C Controller Function The Model 706 does not have controller capabilities TE Extended Talker Capabilities The Model 706 does not have extended talker capabilities Table 3 1 HP 85 IEEE 488 BASIC Statements ENTER 718 A Data placed is A Set REN False LOCAL 7 LOCAL 718 LOCAL LOCKOUT 7 OUTPUT 718 Send LLO Transmit Set REN true REMOTE 7 REMOTE 718 18 to listen RESET 7 SPOLL 718 Conduct serial poll TRIGGER 7 TRIGGER 718 Send GET 3 2 ABORTIO 7 Send IFC CLEAR 7 Send DCL CLEAR 718 Send SDC to device 18 Send GTL to device 18 Send IFC cancel REN Address device 18 to talk Statement oU Device 18 addressed to talk Device 18 addressed to listen Set REN true Address device Send GET without addressing Address device 18 to listen Bus Command Sequence IFC ATNeDCL ATN UNL MTA LAG SDC ATN UNL MLA TAG ATN data REN ATN UNL MTA LAG GTL ATNeLLO ATNeMTA UNL LAG ATN data REN REN ATNeUNL MTA LAG IFC REN REN T ATN UNL MLA TAG SPE ATN status byte ATNeSPD UNT ATN GET ATNeUNL MTA LAG GET 12 LE Extended Listener Capabilities The Model 706 does not have extended listener capabiliti
110. d in detail in paragraph 3 7 G9 Sending the G9 command transmits the status word without a prefix The status word format is covered in detail in paragraph 3 7 G10 Sending the G10 command transmits the channel settling time with a prefix The format is as follows Hnnn nnn G11 Sending the G11 command transmits the channel settling time without a prefix The format is as follows nnn nnn 612 Sending the G12 command transmits the alarm time with a prefix The format is as follows Qhh mm ss G13 Sending the G13 command transmits the alarm time without a prefix The format is as follows hh mm ss G14 Sending the G14 command transmits the interval time with a prefix The format is as follows Wnnn nnn G15 Sending the G15 command transmits the interval time without a prefix The format is as follows nnn nnn G16 Sending the G16 command transmits the selected first and last channel numbers with a prefix The format is as follows Fnnnn Lnnnn G17 Sending the G17 command transmits the selected first and last channel numbers with out a prefix The for mat is as follows nnnn nnnn G18 Sending the G18 command transmits the relay set up location that was previously used with a prefix For example if location 01 was the last recalled location then the statements OUTPUT 718 G18X END LINE ENTER 718 END LINE DISP A END LINE 3 15 Will produce display the 85 of RO1 The format for th
111. d select the single program mode Now enter the following statements in to the HP 85 REMOTE 718 END LINE CLEAR 712 END LINE Notice that when the END LINE key is pressed after the CLEAR 712 statement that the Model 706 did not respond to the SDC because the command was sent with a primary ad dress of 12 Now enter the following statement into the HP 85 CLEAR 718 END LINE When the END LINE key is pressed after the CLEAR 718 statement notice that the instrument returns to the SDC default conditions listed in Table 3 5 Note that the program memory is cleared of previously stored data 2 GET Group Execute Trigger The GET command is used to trigger devices to perform a specific action that depends on device configuration Although GET is con sidered to be an addressed command many devices res pond to GET without being addressed Using the GET command is only one of several methods that can be used to start or stop the Model 706 program operation GET Programming Example To help illustrate this exam ple first set the Model 706 to a known state such as the default conditions Enter the following statements to do this REMOTE 718 END LINE CLEAR 718 END LINE When the END LINE key is pressed after the CLEAR 718 statement the Model 706 reverts to the set conditions listed in Table 3 5 Now enter the following statement into the HP 85 to place the instrument in the continuous program mode and start on GET tri
112. de P1 Single Mode P2 Continuous Mode P3 Inspect Mode Disble Inspect Mode return to previous P mode Programming Example Enter the foliowing statements into the HP 85 to program the Model 706 into the continuous mode REMOTE 718 END LINE OUTPUT 718 P2X END LINE When the END LINE key is pressed the second time the Model 706 is programmed into the continuous program mode Look at the front panel continuous LED to verify that the continuous scan mode was activated The continuous LED should be on 17 Set Alarm Time Q The letter is the command to set the alarm time For ex ample if the alarm time is set for 11 30 00 a TTL level negative going pulse of greater than 10usec appears the SERIAL OUT output connector on the rear panel of the instrument at 11 30 AM everyday until changed This pulse can be used to inform another instrument or device to initiate a scan sequence or open a channel on the Model 706 The format for the alarm time command is as follows Programming Example Enter the following statements into the HP 85 to program the alarm time for 2 15 pm and Ohh mm ss where Q Alarm time command h Hours m Minutes s Seconds display the alarm time on the HP 85 CRT PROGRAM COMMENTS B 10 REMOTE 718 END Sets Model 706 to remote END LINE mode 20 CLEAR 7 END LINE Clears Model 706 30 OUTPUT 718 014 1 2 15 pm 00X END LINE 40 OUTPUT 718 G12X
113. del 706 will complete the constants with trailing zeroes where necessary Invalid keys will be ignored invalid key is pressed the blinking segment cursor remains at the current digit If an incorrect digit is entered the complete constant must be re entered The new value may be entered by cycling the display around to the beginning To do this repeatedly press one of the number buttons too many digits are entered the display begins again at the first digit on the left All the digits in the constant must then be entered again This applies only to Programs 0 2 3 6 and 7 Once all the digits of the desired constants are shown on the display the constant is entered into the program by pressing the ENTER button This applies only to Programs 0 through 7 Table 2 17 Summary of Front Panel Programs Digital Input Output Port American International Date Format Relay Settle Time Set IEEE Primary Address Save Relay Set Up Recall Relay Set Up Pole Configuration 0 1 2 or 4 Alarm Time Set Diagnostic Self Test Stand Alone Master Slave inspect Mode Clear Reset Denotes NOT battery backed up 2 9 1 Program 0 Digital 1 Program 0 allows the user to control the outputs on the digital port The port is located on the rear panel of the Model 706 The output code is displayed in base eight octal on the front panel The actual port output data is in 8 bit form
114. e quence When the END LINE key is pressed after the DISP S statement the status byte value is displayed on the CRT The status byte has a value of 0 with this example because all the bits are set to 0 4 SPD Serial Poll Disable The controller automatically sends the SPD command on the bus to end the serial poll ing sequence in SPE 5 UNT Untalk The controller sends the UNT command to clear the bus of any talkers 6 UNL Unlisten The controller sends the UNL command to clear the bus of any listeners 3 4 3 Addressed Commands Each of the addressed commands are sent to a specific device on the bus Each device is selected on the basis of its primary address The Model 706 responds to these com mands only if the primary address of the command is the same as the primary address of the Model 706 All of the following commands are implemented by addressing the Model 706 to listen 1 SDC Selected Device Clear The SDC command per forms the same functions as the DCL command except that only the addressed device responds The instrument returns to the set conditions listed in Table 3 5 when responding to an SDC command The program memory of the addressed Model 706 is cleared of all previously stored data when an SDC command is received In addi tion the buffer and the display pointers are set to location 1 SDC Programming Example Using front panel controls close channels 1 through 10 on the 706 an
115. e Model 706 gives an IDDCO and then returns to the previously displayed channel Take note of the front panel display upon pressing END LINE the second time Channel 7 should be displayed 3 Close Channel C The letter C is the command to close a particular channel The format for the closed channel command is as follows Cnnnn Where C Close channel command Number of channel Programming Example Enter the following statements into the HP 85 program Model 706 to close channel 7 REMOTE 718 END LINE OUTPUT 718 C7X END LINE Take note of the front panel display upon pressing END LINE the second time Channel 7 should be closed Multiple channels can be closed simultaneously over the bus For example close channels 1 10 by entering the following statement into the HP 85 keyboard OUTPUT 718 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10X END LINE 3 20 Use the display channel command B to verify that each channel has closed Refer to Table 2 15 for the maximum number of relays that can be closed simultaneously NOTE The number of channels for a particular con figuration is determined by the number of poles and Model 706 s daisy chained together 4 Display Mode D The letter D is the command to set a particular display mode There are five display modes and they are as follows 00 Display Channel 01 Display Interval Time 02 Display Time 03 Display Date 04 Display Message Programming Example
116. e date display has two formats The formats showing June 17th are as follows American Date Format b Int rnational Date Format 4 b The formats are selected by front panel Program 1 Refer to paragraph 2 9 for more information concerning front panel programs The date can be set by pressing the DATE button entering the appropriate date onto the display and then pressing ENTER Refer to paragraph 2 6 PRGM The PRGM button when pressed shows a display that prompts the user to select one of the 15 front panel programs Refer to paragraph 2 9 for complete details and examples of the front panel programs IEEE Indicators The IEEE bus indicators TALK LISTEN and REMOTE identify the present status of the IEEE 488 bus The indicators are described as follows TALK The TALK LED when lit indicates that the Model 706 is in the talk mode The Model 706 does not have to be in the remote mode for it to be in the talk mode LISTEN The LISTEN LED when lit indicates that the Model 706 is in the listen mode The Model 706 must also be in the remote mode for it to be in the listen mode REMOTE The REMOTE LED when lit indicates that the Model 706 is in the remote mode 2 8 DETAILED REAR PANEL DESCRIPTION 1 CARD SLOTS Each card slot on the Model 706 rear panel can accomodate one scanner card There are a total of 10 card slots That is the Model 706 can accomodate 10 scanner cards The Model
117. e display is as follows Rnn 20 G19 Sending the G19 command transmits the relay set up location that was previously used without prefix The display is as follows nn 3 5 4 EOI End or Identify The EOI line on the bus is usually set low by a device during the last byte of its data transfer sequence In this way the last byte is properly identified allowing variable length data words to be transmitted The Model 706 normally sends EOI during the last byte of its data string or status word The EOI response of the instrument may be set with one of the follow ing commands 1 EO during last byte 2 K1 Send no EOI NOTE Upon power up the mode is enabled EO Programming Example The response is sup pressed with the following HP 85 statement sequence REMOTE 718 END LINE OUTPUT 718 1 END LINE 3 5 5 Bus Response Mode SRQ The bus response mode determines whether or not the Model 706 requests service from the controller through the SRQ line When the appropriate mode is selected the instrument generates an SRQ under the data or error conditions describ ed as follows 1 If the instrument receives an illegal device dependent com mand IDDC or illegal device dependent command option IDDCO or if the instrument is not in the remote mode when programmed If the end of the buffer is encountered when running a pro gram At the end of interval time Execution of time
118. e similar to the continuous scan example example 3 The only ap preciable difference is the type of scanner card used in each example Except for specified values of the parameters selected front panel operation is similar in scanning se quences _ For more detailed information concerning temperature scans refer to the Model 7057A Instruction Manual Example 6 Low Current Scan With the Model 7058 in stalled the Model 706 is capable of scanning currents in the range of picoamps The Model 7058 is a low current scanner card that is field installable in the scanner mainframe The Model 7058 is designed to introduce a minimum of offset cur rent lt 1pA while guarding ensures that high isolation 10150 is maintained between input signals The actual measurement of the low current should be done with a high quality electrometer such as the Model 614 or Model 619 A high quality picoammeter such as the Keithley Model 480 could also be used All three of these instruments are capable of measuring in the range of picoamps with high accuracy To measure such low currents a number of measurement parameters such as input impedance cabling measurement configuration etc must be taken into con sideration This example does not attempt to give instructions on low current measurement the instruction manuals pro vided with each of the previously mentioned electrometers Table 2 11 Temperature Scan Example Insta
119. e the byte resides in the 3 27 computer the information Figure 3 7 can used when terpreting data and error conditions Bit six is the SRO bit If this bit is set the service request was made by the Model 706 Bit five determines the meaning of bits zero through three If bit five is set the error conditions listed in Table 3 9 apply to bits zero through three If bit five is cleared the data condition listed in the table apply To output the status byte in binary form Figure 3 7 enter the following program into the HP 85 PROGRAM COMMENTS 10 REMOTE 718 END LINE into the remote mode Programs the Model 706 20 S SPOLL 718 END LINE 30 DISP B7 B6 B5 B4 B3 B2 B1 BO END LINE Start serial poll sequence Display contents of quotation mark 3 7 STATUS WORD U The status word command allow access to information con cerning various operating modes of the Model 706 The status word also contains information about the present status of the input and output lines on the digital 1 port When the correct command is given the Model 706 outputs the status word or 1 status the next time it is addressed to talk instead of sending its normal data string Each byte in the status word is a number corresponding the previously pro grammed parameter with the following sequence 706 ADEJKPTGMY Refer to Figure 3 8 for an example of the status word To output the status word enter the following program
120. ect Board Schematic Diagram 6 25 Table 6 1 Model 706 Recommended Spare Parts List 8 LED Display Digit Hex Buffer 4050 LED Pilot Light Microprocessor 6808 68A50 Keithley Number Description Oty Darlington Transistor Array ULN2003A Octal D type flip flops 74C374 1 25A 250V SLO BLO 3AG for 90V 125V Operation 0 6A 250V SLO BLO 3AG for 195V 250V Operation 1 25A 250V SLO BLO 5mm for 90V 125V Operation 0 6A 250V SLO BLO 5mm for 195V 250V Operation Resistor 1000 5 Composition Thick Film Resistor Network on the Digital O Board Versatile Interface Adapter SY6522 VIA Asynchronous Communication Interface Adapter ACIA Either FU 28 or FU 27 is placed in the kit depending on the line voltage used 6 1 Table 6 2 Display Board Parts List Circuit Location Keithley Desig Description E 10uF 25V Aluminum Electrolytic C 314 10 1000pF 100V Ceramic Disc C 64 1000p 1 LED Display Digit DD 31 8 LED Display Digit DD 30 8 LED Display Digit DD 30 8 LED Display Digit DD 30 8 LED Display Digit fuis DD 30 8 LED Display Digit DD 30 8 LED Display Digit DD 30 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 LED Pilot Light PL 67 PNP Silicon Transistor 2N4355 TG 90
121. el 7010 is an IEEE 488 cable adapter The adapter extends the IEEE 488 connector by one connector width Model 7051 2 The Model 7051 2 is a 2 feet BNC to BNC cable is especially useful for daisy chain operation Model 7051 5 The Model 7051 5 is a 5 feet BNC to BNC cable It is especially useful daisy chain configuration Model 7068 Fixed Rack Mount The 7068 is a fixed or stationary rack mounting kit that mounts the 706 in a standard 19 inch rack The dimensions are 13 3 4 inches deep x 7 inches high 850mm x 178mm Model 7069 Slide Rack Mount with Handles The Model 7069 is a sliding rack mount kit It enables one Model 706 to be rack mounted with the added feature of sliding the instrument for easy access The dimensions are 3 3 4 inches deep x 7 inches high 95mm x 178mm 1 9 REPACKING FOR SHIPMENT The Model 706 should be packed in its original carton Before packing wrap the instrument in plastic After it is placed in the box surround the instrument with styrofoam packaging mate rial Remove all cards and ship separate If the Model 706 is to be returned to Keithley Instruments for calibration or repair include the following e Write ATTENTION REPAIR DEPARTMENT on the address label e Include the warranty status of the instrument e Photocopy and complete the service form at the back of this manual and return it with the instrument SECTION 2 OPERATION 2 1 INTRODUCTION
122. el or crosspoint The crosspoint or channel is NOT CLOSED it is iust displayed for the user s in spection The preceding example has shown how to 1 Activate Program 93 inspect mode step 2 2 Activate matrix mode step 3 3 Program three relay set ups and store them using Program 4 steps 4 17 4 Recall the stored relay set ups steps 19 22 and 25 5 Inspect the closed crosspoints of the set up steps 20 23 and 26 6 Take the Model 706 out of the inspect mode step 27 NOTE Activating Program 99 or shutting off power to the 706 takes the instrument out of the inspect mode 2 9 14 Program 94 Clear Program 94 is used to clear a buffer location A buffer loca tion consists of a relay set up that was stored using Program 4 Up to 75 relay set ups can be stored and individually cleared of data using Program 94 Use the following example to eStore five relay set ups in location 1 thru 5 locations 4 and 5 using Program 94 1 Press PRGM 4 0 1 ENTER Selects Program 4 and stores the present relay set up in location 01 For simplici ty in this procedure the relay set up is all relays open 2 Press PRGM 4 0 2 ENTER Selects Program 4 and stores the present relay set up in location 02 For simplici ty in this procedure the relay set up is all relays open 3 Press 4 0 3 ENTER Selects Program 4 and stores the present relay set up in location O3 For simplici ty i
123. elects the channel mode and reverts the instrument to the programmed first channel 2 Press 0 0 1 FIRST Selects channel 1 as the first chan nel 3 Press 0 1 0 LAST Selects channel 10 as the last chan nel 4 Press RESET Reverts to the programmed first channel 5 Press CLOSE Closes presently displayed channel 6 Press CHANNEL CHANNEL CLOSE Advances the Model 706 to channel 3 and closes it 7 Press CHANNEL CHANNEL CLOSE Advances the Model 706 to channel 5 and closes it 8 Press CHANNEL CHANNEL CLOSE Advances the Model 706 to channel 7 and closes it 9 Press CHANNEL CHANNEL CLOSE Advances the Model 706 to channel 9 and closes it 10 Press PRGM 4 Selects program mode selects Program 4 and displays the following SAU 01 11 Press 1 ENTER Select the relay set up 1 to be stored and when ENTER is pressed the set up is stored in location SAVO1 The display is then reverted to the channel mode at the previously displayed channel To verify that the relay set up has been stored use the follow ing procedure 1 Press RESET Reset to the programmed first channel and opens all relays 2 Press PRGM 5 Selects program mode and also Program 5 3 Press 0 1 ENTER Selects location 01 and recalls the set up 4 Press CHANNEL nine times and notice that the odd numbered channels are all closed and the even numbered channels are all open This verifies that relay set up was indeed stored using Program 4
124. en using the step single or continuous scan mode The interval time ranges from 000 010 seconds to 999 999 seconds Upon the ac tuation of front panel Program 99 the interval time is reverted to the default condition of 000 010 Powering the unit down will not change the programmed interval time There are two ways the interval time can be changed and they are as follows A Activate Program 99 resets to 000 010 B Press the INTERVAL button and then press the ap propriate number from 000 010 to 999 999 Press ENTER 5 DATA The DATA group of buttons consist of the 0 9 CANCEL and ENTER buttons They are described as follows 0 9 The 0 9 data keys allow entry of numerical data onto the display The 0 9 keys can be used to enter numerical constants on the display for certain functions such as inter val time channel number front panel programs time and date ENTER Upon actuation the ENTER button loads the displayed data for channel number interval time time date and program modes into the Model 706 In the pro gram mode the ENTER button initiates the selected pro gram 0 7 after the necessary data is entered onto the display CANCEL During the entry of data C segment cursor is flashing the CANCEL button cancels the present display and reverts the instrument to the previous display The CANCEL button is functional only when entering data on to the display in the channel interval time date and pro
125. ence is automatically performed by the HP 85 when the following statements are entered into the keyboard REMOTE 718 END LINE LOCAL LOCKOUT 7 END LINE When the END LINE key is pressed after the LOCAL LOCKOUT 7 command the front panel controls are inactive Press several of the buttons and notice that they have no ef Table 3 5 Power Up DCL and SDC Default Conditions Poles A2 Display Channel BOO1 Close COOO Display Mode DO Date Format EO First Channel F1 Prefix 6000 Settle Time 00 005 1 Store Debug Test ROM RAM and LED test End Identify KO Set Last Channel L1 SRQ MOOO Open Channel N1 Port 0000 Alarm Time Q00 00 00 Reset R Set Time Shh mm ss Trigger Mode T6 Alternate Output U Set Date Vmm dd Interval Time Terminator Y LF Recall 2 2 pole Configuration Display channel 1 Close channel disabled Channel mode displayed American date format Set first channel not affected Channel data trasmitted with Settle Time 000 005 seconds Store is not affected Run debug test is transmitted during last byte Set last channel not affected SRQ Channel 1 is open All 1 outputs set low Step program mode Alarm time is set to 00 00 00 and is disabled Reset is not affected Time is not affected Start on e
126. ence on the rear panel of the intrument near the IEEE connector The numeric value following each one or two letter code defines the Model 706 capabilities as follows 10 11 SH Source Handshake Function The ability for the Model 706 to initiate the transfer of message data on the data bus is provided by the SH function AH Acceptor Handshake Function The ability for the Model 706 to guarantee proper reception of message data on the data bus is provided by the function T Talker Function The ability for the Model 706 to send device dependent data over the bus to other devices is provided by the T function Model 706 talker capabilities exist only after it has been addressed to talk L Listener Function The ability for the Model 706 to receive device dependent data over the bus from other devices is provided by the L function Listener function capabilities of the Model 706 exist only after it has been addressed to listen SR Service Request Function The ability for the Model 706 to request service from the controller is pro vided by the SR function RL Remote Local Function The ability for the Model 706 to be placed in the remote or local mode is provided by the RL function Parallel Poll Function The Model 706 does not have paralle polling capabilities DC Device Clear Function The ability for the Model 706 to be cleared initialize
127. ent while CLEAR 718 causes a SDC to be transmitted to device 718 21 The third column of Table 3 1 lists the mnemonics for the command sequences While most of these are covered elsewhere a few points should be noted The ATN line is set low by the controller if the data bus contains a multiline com mand This is indicated in the table by ANDing the ATN mnemonic with the first command on the bus For example ATNeGET means that ATN and GET are sent simultaneously Two commands not previously covered are MLA My Listen Address and MTA My Talk Address These are ordinary PCG Primary Command Group addresses sent by the HP 85 to facilitate bus opertion in some situations The Model 706 will essentially ignore these commands the Model 706 trig gers on MTA in the and T1 modes but other devices may require that MLA and MTA be present in the command se quence under certain circumstances NOTE The HP 85 address is set to 21 at the factory Since each device on the bus must have a unique primary address do not set the Model 706 to the controller s address to avoid possible conflicts 3 1 3 Interface Function Codes The interface function codes are part of the IEEE 488 1978 standards These codes define an instrument s ability to sup port various functions and should not be confused with pro gramming commands found elsewhere in this manual Table 3 2 lists the codes for the Model 706 These codes are also listed for conveni
128. es Table 3 2 Model 706 Interface Function Codes Code Interface Function Source Handshake Capability Acceptor Handshake Capability Talker Basic Talker Serial Poll Unaddressed To Talk On LAG Listener Basic Listener Unaddressed To Listen On TAG Service Request Capability Remote Local Capability No Parallel Capability Device Clear Capability Device Trigger Capability No Controller Capability Open Collector Bus Drivers No Extended Talker Capabilities No Extended Listener Capabilities 3 1 4 Model 706 Interface Commands Interface commands controlling Model 706 operation are listed in Table 3 3 Not included in the table are device dependent commands which are covered in detail in paragraph 3 5 Table 3 3 IEEE Command Groups HANDSHAKE COMMAND GROUP DAC DATA ACCEPTED RFD READY FOR DATA DAV DATA VALID UNIVERSAL COMMAND GROUP ATTENTION DCL DEVICE CLEAR IFC INTERFACE CLEAR LLO LOCAL LOCKOUT REN REMOTE ENABLE SPD SERIAL POLL DISABLE I SPE SERIAL POLL ENABLE ADDRESS COMMAND GROUP LISTEN LAG LISTEN ADDRESS GROUP MLA MY LISTEN ADDRESS _ UNL UNLISTEN TALK TAG TALK ADDRESS GROUP TALK ADDRESS UNTALK OTA OTHER TALK ADDRESS ADDRESSED COMMAND GROUP ACG ADDRESSED COMMAND GROUP GET GROUP EXECUTE TRIGGER GTL GO TO LOCAL SDC SELECTIVE DEVICE CLEAR STATUS COMMAND GROUP ROS REQUEST SERVICE SRQ SERIAL POLL REQUEST STB STATU
129. es the presently displayed channel the last channel of a multi channel configuration Last is indicated by an L on the display When activated the RESET button opens all channels and reverts the display to the specified first channel The INTERVAL button selects the programmed interval time for display and turns on the interval LED The interval time is the programmed time each channel is closed in a scanning sequence The CONTINUOUS button selects the continuous scan mode and turns on the continuous LED The continuous scan mode allows the user to scan through the programmed channels in a continuous cycle upon the actuation of the START STOP button The SINGLE button selects the single scan mode and turns on the SINGLE LED The single scan mode allows the user to scan through the programmed channels one time upon the actuation of the START STOP button The START STOP button when activated initiates the selected scan mode and turns on the START STOP LED Pressing the button during a scan stops the scan sequence and turns off the START STOP LED When not in the continuous or single scan modes the START STOP button activates the STEP scan mode Refer to paragraph 2 5 4 The PRGM Program button when activated shows a display that prompts the user to select one of the 15 front panel programs Refer to paragraph 2 9 for complete details and examples of the front panel programs The 0 9 buttons allow entry of numerical data onto the display
130. esent relay set up To recall the stored relay set up enter the following statements into the HP 85 REMOTE 718 END LINE OUTPUT 718 Z1X END LINE When END LINE is pressed the second time the Model 706 recalls the stored relay set up Programming Example Use the following program to store a relay set up of channels 1 through 5 with the program med first channel being channel 1 and the programmed last channel being channel 5 The odd channels are programmed closed and the even channels are programmed open the following program into the HP 85 PROGRAM COMMENTS 10 REMOTE 718 END Sets the Model 706 LINE remote mode 20 CLEAR 7 END LINE 30 OUTPUT 718 B1 F1 C1X END LINE Clears the Model 706 Displays closes and sets channel 1 as the first channel 3 22 40 OUTPUT 718 B2N2X Displays and closes channel END LINE 50 OUTPUT 718 B3C3X Displays and opens channel END LINE 3 60 OUTPUT 718 BANAX Displays and opens channel END LINE 4 70 OUTPUT 718 B5L5C5X Displays closes amp sets END LINE channel 5 as last channel 80 OUTPUT 718 11X Saves relay set up END LINE 90 OUTPUT 718 RX Opens all channels and dis END LINE plays the first channel 100 END Press the RUN key on the HP 85 to run the program After the RUN key is activated the Model 706 displays the reset condition Use the following programming statement to recall and display the stored relay set
131. eset sequence that is described as follows 1 Upon completion of step 2 the Model 706 responds by displaying the following message 2 After the reset message all front panel LEDs turn on for a period of time as shown in the following display 888888 _ The push button and TALK LISTEN and REMOTE LEDs also turn on at this time During this time the Model 706 performs a cyclic redundancy check CRC of the ROM cuitry and a digital self test of the RAM circuitry Refer to Program 8 for details on the ROM and RAM checks 3 After all the front panels are turned on and then off the Model 706 displays the current software revision level for approximately 0 5 seconds The following display is an ex ample of software revision level 1 4 After the software revision level is displayed the Model 706 displays the primary address for approximately 0 5 seconds The following display is an example of primary address 18 IB Once the primary address display is shown the Model 706 is in the Program 99 reset condition as defined by Table 2 21 Table 2 21 Program 99 Reset Conditions Function or Program Reset Condition CHANNEL All channels are open and the display is set to Time is not affected by PROGRAM 99 TIME DATE Date is not affected by PROGRAM 99 RESET Reset is not affected by PROGRAM 99 INTERVAL Interval rate is set to 000 010 CONTINUOUS
132. eshooting qb C os pa Recommended Test Equipment Digital Self Power Supply CHECKS pe EATER AR Kd anes Digital Circuitry Checks Display Boards Check w Interconnect Board Checks wa wwe Rr E E ed Battery Charge Special Handling of Static Sensistive Devices SECTION 6 REPLACEABLE PARTS AC CR EER Coo Foe pa oie d CR RN ROO Parts LE ama Rated avia buds assia Ordering Information Factory Component Location Drawings and Schematic Diagrams LIST FIGURES Figure Title 1 1 Model 706 Scanner 2 1 Scanner Card Installation xe m ORC PRO Rn 2 2 Front Panel Contro 2 3 Model 706 Rear Panel 2 4 Daisy Chain Configuration 2 5 Model 7052 Matrix Scheme SY CORA ER OX ROC V e x eas 2 6 Matrix Display Cla
133. f sending the U and G modes Refer to paragraph 3 5 8 step 7 for information concerning the prefix modes and their formats U3 Sending the U3 command outputs the time and date The time and date can be sent with or without a prefix depending on the present prefix mode G Refer to the flowchart in Figure 3 6 for the sequence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for in formation concerning the prefix modes and their for mats U4 Sending the U4 command outputs the status word The status word can be sent with or without a prefix depen ding on the present prefix mode G Refer to the flowchart in Figure 3 6 for the sequence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for in formation concerning the prefix modes and their for mats U5 Sending the U5 command outputs the channel settle time The channel settle time can be sent with or without a prefix depending on the present prefix mode G Refer to the flowchart in Figure 3 6 for the se quence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for information concerning the prefix modes and their formats U6 Sending the U6 command outputs the alarm time The alarm time can be sent with or without a prefix depen ding on the present prefix mode G Refer to the flowchart in Figure 3 6 for the sequence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for in formation concerning the prefix modes and their for m
134. f each channel to 50 05 seconds REMOTE 718 END LINE OUTPUT 718 50 050 END LINE When END LINE is pressed the second time the settle time of each channel is set to 50 05 seconds Upon completion of the programmed settle time the Model 706 outputs a negative going TTL level pulse of greater than 10usec to the channel ready output The pulse can be used to inform another device or instrument that the programmed settle time is completed for one channel To display the settle time on the controller s display use the six line program in paragraph 3 5 1 Use G10 instead of GO to send the settle time with a prefix and do not use line 20 clear To display the settle time on the Model 706 front panel activate front panel Program 2 9 Channel Save Recall I and Z The letter is the command to save the present relay set up or recall the stored relay set up Refer to paragraph 2 9 5 and 2 9 6 front panel Program 4 and 5 for more informa tion concerning saving and recalling relay set up The for mat for the save recall command is as follows clears all memory locations 101 through 175 save the present relay set up 201 through 275 recall the corresponding relay set up Programming Example Enter the following statements into the HP 85 to program the Model 706 to save the present relay set up REMOTE 718 END LINE OUTPUT 718 11X END LINE When END LINE is pressed the second time the Model 706 saves the pr
135. fix or without the prefix they are listed as follows Refer to paragraph 3 5 1 for an example program 1 G0 Sending the GO command transmits the channel data with a prefix The format is as follows Cnnnn Sn where C Present Channel S Status of Present Channel Open 1 Closed 2 G1 Sending the G1 command transmits the channel data without a prefix The format is as follows nnnn n 3 G2 Sending the G2 command transmits the entire channel buffer state with a prefix The format is as follows C0001 Sn C0002 Sn Cnnnn Sn 4 G3 Sending the G3 command transmits the entire channel buffer state without a prefix The format is as follows 0001 0002 e nnnn n 5 G4 Sending G4 command transmits the status of the 1 0 port with a prefix The format is as follows 10 11 12 13 14 15 16 17 18 19 where i The input from 0 to 377 octal o The output from 0 to 377 octal G5 Sending the G5 command transmits the status of the O status port without a prefix The format is as follows 000 G6 Sending the command transmits the time date with prefix The format is as follows Thh mm ss Dmm dd G7 Sending the G7 command transmits the time and date without a prefix The format is as follows hh mm ss mm dd G8 Sending the G8 command transmits the status word with a prefix The status word format is covere
136. front panel con trols close the odd channels between 1 and 50 Then store the set up in location O01 To illustrate this example type in the following program into the HP 85 PROGRAM COMMENTS 10 DIM 10001 END Defines LINE 20 REMOTE 718 END Sets the 706 to remote LINE 30 OUTPUT 718 201 Recalls relay set up location END LINE 01 40 OUTPUT 718 P3G2X Selects the inspect mode and END LINE the send buffer state with prefix mode ENTER 718 END Obtains data string END LINE 60 DISP A END LINE 70 END END LINE Display data string End of program After typing in the program press the RUN key on the HP 85 to run the program After the RUN key is pressed the chan nels that are closed odd channels 1 through 50 are displayed with a prefix on the HP 85 s CRT The display is shown as follows 0001 51 0003 51 0005 51 0007 51 0009 51 0011 51 0013 51 0015 51 0017 51 0019 51 0021 51 0023 51 C0025 81 C0027 81 C0029 81 C0031 51 0033 51 0035 51 0037 51 0039 51 0041 51 0043 51 0045 51 0049 51 take the Model 706 out of the inspect mode enter the following statement into the HP 85 OUTPUT 718 P4X END LINE After the END LINE key is pressed the Model 706 is taken out of the inspect mode and the middle decimal point 706 display stops blinking and goes out 3 5 3 Prefix Some commands may be sent with an identifying pre
137. g for the computing sequences is provided by 4MHz crys tals Y101 The 6808 microprocessor divides this signal by four produce a 1MHz signal at the E pin 37 output This is a sin gle phase TTL compatible clock The clock may be conditioned by a memory read signal This output is capable of driving one standard TTL load and 130pF U115 and its associated circuitry form a reset circuit which re sets the microprocessor VIA ACIA and IEEE 488 interface cir The circuit actuates in the event the front panel display is not updated after a specific period of time e g interval time has elapsed due to lost program or power line transient The circuit also works as a threshold detector circuit As seen in schematic 705 106 sheet 3 of 3 the data lines run ning throughout the microcomputer circuitry are labeled as DO through D7 The address lines running throughout the micro computer circuitry are labeled as AO through A15 The serial out and alarm serial in outputs are controlled by the ACIA U103 R109 and R110 and CR103 comprise a protec tion network for these two outputs The ser al out output data is transmitted via R110 and pin 6 of the ACIA U103 The alarm serial in data is transmitted received via R109 and pin 2 of the ACIA The external trigger input and channel ready output are controlled by the U120 R108 111 and CR102 comprise a protection circuit for these two connectors while R112 is a pull up resist
138. ged to 4 Now change the pole configuration to 2 This can be done by activating front panel Program 99 using the following procedure 1 Press PRGM 6 2 Press 2 ENTER In the 1 pole mode the display is slightly different as shown in the following display BU IF n The additional display digit is due to the fact that up to 200 channels may be realized in the 1 pole mode This only works with the Model 7056 general purpose scanner card Matrix Using the Model 7052 matrix scanner with the Model 706 requires that the matrix mode be ac tivated The matrix mode precludes the use of the continuous or single scan modes The matrix mode can only be used in the step scan mode To activate the matrix mode use the following procedure 1 Press PRGM 6 Selects program mode and Program 6 2 Press 0 ENTER Selects matrix mode After the ENTER button in step 2 is pressed the Model 706 is placed in the matrix mode and the following is B i lo where the format is as follows nnn m O or C where nnn Three digit number displaying the column Where there can be a total of five columns per card 10 cards per 706 five daisy chained 706 s maximum This can be a maximum of 250 columns m The row from 1 to 4 o or c The crosspoint is either opened or closed The matrix mode displays crosspoints instead of channels Crosspoints consists of the junction of one row with one col umn On each
139. gger mode OUTPUT 718 P2T2X END LINE Where P2 is the command to set the instrument into the con tinuous program mode and T2 is the command to set the in strument to the start on GET mode Now the instrument may be triggered to start with the following statement TRIGGER 718 END LINE After this statement is entered the front panel START STOP LED turns on indicating the instrument has been triggered To stop the program operation enter the following statements into the HP 85 OUTPUT 718 T3X END LINE TRIGGER 718 END LINE Where T3 is the command to set the instrument into the stop on GET mode When the END LINE key is pressed after the OUTPUT 718 T3X statement the program operation scan ning sequence is stopped When the END LINE key is press ed after the TRIGGER 718 statement the START STOP LED goes out indicating the instrument has received the trigger NOTE Sending any valid command during a scanning sequence STOPS THE SEQUENCE at the presently displayed channel or crosspoint The Model 706 also responds to the GET command without addressing This command is sent with the following HP 85 statement TRIGGER 7 3 GTL Go To Local The GTL command is used to remove the instrument from the remote mode The REN line MUST BE SET HI FALSE in order for the GTL com mand to restore operation of the locked out Model 706 front panel controls GTL Programming Example To illustrate this example the
140. gital 1 0 Port Contact Pin Assignment Pin Number Connection 5 Volts for reference only 5 Volts for reference only IEEE Common IEEE Common Input Bit 7 Output Bit 7 Input 6 Output Bit 6 Input Bit 5 Output Bit 5 Input Bit 4 Output Bit 4 Input Bit 3 Output Bit 3 Input Bit 2 Output Bit 2 input Bit 1 Output Bit 1 Input Bit 0 Output Bit 0 Programming Example Enter the following statements into the HP 85 to set the eight output lines high and display the result on the HP 85 CRT 3 24 PROGRAM 10 REMOTE 718 END LINE 20 CLEAR 7 END LINE 30 OUTPUT 718 0377X END LINE 40 OUTPUT 718 G4X END LINE 50 ENTER 718 END LINE 60 DISP END LINE 70 END END LINE COMMENTS Sets Model 706 to remote mode Clears Model 706 Sets Digital 1 outputs high Sends 1 O status port with prefix Obtain data sting Display data string End of program When the RUN key is pressed the eight output lines will go high and the following is displayed on the HP 85 CRT XXX 377 NOTE With no connections on the digital inputs they are undefined 16 Program P The letter P is the command to select one of the three scanning modes and to enable or disable the inspect mode The scanning modes are explained in detail in paragraph 2 5 4 The format for each of the program modes is as follows Step Mo
141. grammed channels manually the Model 706 can be programmed for the step scan mode In the step scan mode the programmed channels can be scanned closed for the programmed interval rate and then opened one chan nel at a time Upon the actuation of the START STOP but ton a single channel will be scanned For this example we will choose the following parameters 1 First channel is 1 2 Last channel is 10 3 Interval time is 2 seconds 4 Number of poles is 2 5 Use the step scan mode Use the steps outlined in Table 2 6 to program the Model 706 for the preceding parameters For the sake of simplicity we will use the Model 7056 general purpose scanner card for this example Upon the actuation of the START STOP button in step 9 channel 1 is closed and the START STOP LED is turned on Channel 1 remains closed for two seconds programmed in terval rate and then opens The START STOP LED turns off and the Model 706 advances to the next channel To scan the remaining channels press the START STOP button each time a channel is to be scanned After the last programmed channel is scanned the instrument reverts to the first programmed channel and turns off the START STOP LED At this point the step scan sequence may be activated again by pressing the START STOP button if desired To stop the scanning sequence and reset the Model 706 to the programmed first channel simply press the RESET but ton Example 2 Single Scan In the single
142. he instrument reverts to the following display because memory location 5 has been 4 Repeat steps 1 2 and 3 for memory locations 3 and 4 This will verify that the location have indeed been cleared NOTE Program 94 is different from storing all relays open in a memory location Using Program 94 to clear a memory location wipes out the location altogether Attempting to recall cleared memory location is not valid The memory loca tion if it is needed will have to be programmed using Program 4 i 2 28 In the matrix mode steps 1 thru 4 could be used differently After step 4 the user would press ENTER This will display the recall message Now press START STOP to advance through the stored memory locations In this example set ups 03 04 and 05 are cleared Therefore pressing the START STOP button few times shows that only set ups 01 and 02 exist There could be more locations beyond location 05 but using this method of the START STOP button while in the matrix mode stops at the location where there is no location and loops back to location 01 To clear all the buffer locations press 4 0 0 2 9 15 Program 99 Reset Program 99 is used to reset the Model 706 to the conditions listed in Table 2 21 To activate Program 99 use the following procedure 1 Press PRGM Selects program mode 2 Press 9 9 Initiates front panel Program 99 Upon completion of step 2 the Model 706 goes through a r
143. he second time the error message in Figure 3 9b is displayed for about one second 3 10 SCANNING PROGRAM The following program sets the Model 706 for the following parameters 3 29 1 Sets programmed first channel to 1 2 Sets programmed last channel to 100 3 Sets the interval time to 200msec 4 Sets the unit to the display mode 5 Use the continuous scan mode 6 Trigger the scan sequence on GET 7 Provide a pause and clear statement Enter the following statements into the HP 85 to program the Model 706 to scan channels 1 through 100 at a 200msec in terval rate PROGRAM COMMENTS 10 REMOTE 718 END LINE Model 706 set to remote 20 CLEAR 7 END LINE Clears Model 706 30 OUTPUT 718 Programs the Model 706 D0F1L100W 2P2T2X for the above parameters END LINE 40 TRIGGER 718 Provides GET trigger 50 PAUSE Program pause 60 CLEAR 7 Clears Model 706 70 END End of program To start the program press the RUN key on the HP 85 After the RUN key is pressed the Model 706 scans the pro grammed channels at the programmed interval rate To stop the program simply press the key The program stop at the second channel when the CONT key is pressed To resume the program press the CONT key a second time or press the RUN key Upon pressing the RUN key or the CONT key second time the Model 706 continues the pro gram SECTION 4 THEORY OF OPERATION 4 1 INTRODUCTION This sect
144. hen the commands are transmitted Several commands may be grouped together Before a com mand or command string is executed the ASCII character X must be sent Commands sent without an X execute are re tained within the command buffer until the execute character is received The condition of the status word within the Model 706 is af fected by the device dependent commands The status word may be obtained from the unit by using commands covered in this section Refer to paragraph 3 7 for status word information Illegal commands do not change the mode of the Model 706 but the status byte condition changes as described in paragraph 3 6 Normal Model 706 commands are covered in the following paragraphs All the device dependent commands for the Model 706 are listed in Table 3 7 The Model 706 executes the programmed commands in the order listed in Table 3 8 This means that if a statement is entered into the HP 85 as follows OUTPUT 718 P1W3 5D1X END LINE The Model 706 executes the commands in the following order according to Table 3 8 1 Displays interval time D1 2 Selects single scan mode 1 3 Programs interval time for 3 5 seconds W3 5 There are three types of commands that make up the device dependent commands listed in Table 3 8 They are as follows 1 Independent Commands Commands that do not interact with each other 2 Timer Commands Commands that control the time and date 3 Channel C
145. ine Commands As stated previously uniline commands are sent by setting the associated bus line low true The five uniline single line commands are 1 ATN Attention The ATN commands are sent when the information on the data bus is a universal or addressed command Universal and addressed commands are described in paragraphs 3 4 2 and 3 4 4 When the ATN line is high the byte the data bus is considered to data The Model 706 responds to the appropriate universal and addressed commands when the ATN line is low and to the device dependent commands when the ATN line is high assuming it is properly addressed 2 REN Remote Enable The controller sends this com mand to all devices on the bus when remote operation is desired The Model 706 responds by setting itself up for remote operation as indicated by the front panel REMOTE LED 3 End Or Identify EO is sent during the last byte of a multiline transfer by setting the EO line low In this way the last byte is identified aliowing variable length data words to be transmitted The Model 706 implements this command when in the appropriate bus response mode as stated in paragraph 3 5 4 4 IFC interface Clear The IFC command sets the bus to a _ known state by setting the IFC line low true 5 SRO Service Request The SRO line is pulled low true by an external device thereby informing the controller the device requires service The Model
146. into the HP 85 COMMENTS Programs the Model 706 PROGRAM 10 REMOTE 718 END LINE 40 FOR 1 7 to 0 STEP 1 END LINE 50 DISP 5 1 END LINE 60 NEXT i END LINE 70 DISP END LINE 80 END END LINE Loop eight times Display status byte Press the RUN key to start the program After the RUN key is pressed the Model 706 outputs the status byte to the con troller The controller then displays the status byte in the form shown in Figure 3 7 1 DDC 1 1 REMOTE 1 BROKEN SERIAL LOOP 1 N A 1 ERROR 1 SRQ 1 B7 186 185 4 83 182 181 1 0 1 01 1 0 1 0 1 0 1 0 1 0 1 0 0 0 584 0 DATA 0 SETTLING TIME 0 OF INTERVAL TIME 0 END OF SCAN 0 TIMER ALARM 0 Figure 3 7 Status Byte Format 3 28 20 CLEAR 7 END LINE 30 OUTPUT 718 U4X END LINE 40 ENTER 718 A END LINE 50 DISP END LINE 60 END END LINE into the remote mode Clears the Model 706 Outputs status word Obtains data string Displays data string End of program Press the RUN key to implement the program After pressing the RUN key the Model 706 outputs the status word In this case the status word is transmitted to the controller with a prefix MODEL NUMBER B NUMBER TOLES 2 DISPLAY MODE INTERNATIONAL ROM ANO LED 110 Lu ends TERMINATOR LF SRO MODE
147. ion contains circuit descriptions of the Model 706 The information is arranged to provide a description of individual functional circuit blocks To facilitate understanding the de scriptions are referenced to Figure 4 1 which is an overall block diagram of the Model 706 Detailed schematics of the Model 706 are located in Section 6 4 2 POWER SUPPLY To aid in understanding of the following discussion refer to the block diagram in Figure 4 1 The power supply is a 6V switching supply with 6A current capa bility The AC input may range from 95V to 125V or 210V to 250V depending on internally selected jumpers Refer to Sec tion 5 Maintenance for complete details The supply operates on line frequency from 47Hz to 440Hz Regulation of the line and load is 0 15 with noise and ripple being a maximum of 5mV The supply has an inherent solid state short circuit protection An automatic current limiting circuit limits the output current which provides protection for the instrument as weil as the sup ply There is also a thermal circuit breaker to provide thermal overload protection 4 3 MICROCOMPUTER To simplify understanding of the following discussion refer to the block diagram in Figure 4 1 and schematic diagram 705 106 sheet 3 of 3 The microcomputer includes a 6808 microprocessing unit CPU 0105 6522 versatile interface adapter VIA 0120 two 2764 ROMs U106 and U107 The microcomputer also consists of two 6116s
148. ith one exception The four feet on the botiom cover must be removed in order to remove the bottom cover Remove the plug in cards see paragraph 2 2 2 Remove digital board as follows A Remove the two screws that secure the digital I O board to the mounting rail assembly 706 311 Disconnect the digital board from the mother board C Lift the digital board from the Model 706 main frame Remove the four decorative strips from the side panels as follows From inside the mainframe place thin blade screw driver into one of the holes where the decorative strip is secured Refer to Figure 5 3 Carefully push outwards from the mainframe with the screwdriver The strip will disengage of one fastener and then can be pulled away from the mainframe C Repeat steps A and B for the remaining decorative strips D To install the decorative strip align the strip in the re cessed part of the side panei and press the strip at the points of the two fasteners This action secures the strip in place Hemove the power supply as follows Remove the three screws that secure the thermal breaker shield to the supply and mounting rail Refer to Figure 5 3 B Remove the ground wire from the power supply C Remove the two screws that secure the power supply to the side panel Carefully lay the supply on top of the mouniing rails D Disconneci the Molex connectors for the AC input and DC ouiput wires of the su
149. l 1 as the first channel Programs channel 10 as the last channel Programs the interval time for two seconds Selects the channe mode for display and reverts to the first channel Initiates the step scan mode 4 Number of poles is 2 5 Use single scan mode Use the steps outlined in Table 2 7 to program the Model 706 for the preceding parameters Upon the actuation of the START STOP button in step 10 channel 5 is closed for 0 5 seconds programmed interval rate and then opens The Model 706 advances to the next channel and closes it for the programmed interval rate and then opens it The sequence continues up to and including the last pro grammed channel At this point the Model 706 reverts to the programmed first channel and turns off the START STOP LED The single scan sequence is now complete Pressing the START STOP button during a single scan se quence stops the scan at the presently displayed channel The channel remains closed and turns off the START STOP LED To continue the scanning sequence from the presentiy displayed channel press the START STOP button To stop the scanning sequence and reset the Model 706 to the programmed first channel which is 5 in this example simply press the RESET button Example 3 Continuous Scan In the continuous scan mode the scanning sequence described in example 2 repeats continuously until at least one of the following conditions are met 1 Power is interru
150. l unit in the con figuration The slave unit or units do not have any control in the set up except power on off Programs 90 and 91 The slave unit s primary function is to increase the number of channels in a chain configuration To activate Program 92 use the following procedure 1 Connect the Model 706 to at least one other Model 706 in a daisy chain configuration See Figure 2 4 2 Install the appropriate scanner cards 3 Turn the units on 4 Select a unit s as the slave s NOTE Select any Model 706 to be a slave in the daisy 2 26 chain configuration except the Model 706 that is designated as the master 5 Press 9 2 of the selected slave unit s The follow ing message is displayed upon pressing the number 2 SCAUE The display message remains on the display as long as the unit is programmed as a slave unit To program the Model 706 out of the slave configuration condition one of the following actions can be used 1 Activate front panel Program 90 2 Activate front panel Program 91 2 9 13 Program 93 Inspect Mode Program 93 is used to examine a relay set up Examination of a relay set up means that the closed channels of the set up are displayed but not closed While in the inspect mode pressing the CHANNEL button advances the display to the next closed channel or if in the matrix mode the next closed crosspoint In the inspect mode only the closed channels or crosspoints are displayed
151. lay operation may be restored by entering the following statement into the 85 OUTPUT 718 END LINE 3 5 2 Program Scan Mode The following three commands set the Model 706 to the Single Continuous or Step mode 1 P 0 The PO command sets the Model 706 to the step scan mode The step scan mode permits the user to scan through the programmed channels one at a time upon sen ding the PO command one channel scanned per PO com mand In using the step scan mode over the bus the inter val time must be greater than 1 2 P1 The P1 command sets the Model 706 to the single scan mode The single scan mode permits one complete scan of the programmed channels 3 P2 The P2 command sets the Model 706 to the con tinuous scan mode The continuous scan mode permits a continuous scan of the programmed channels 4 P3 The P3 command sets the Model 706 to the inspect mode The inspect mode is a convenient mode that allows the user to examine the closed channels of a relay set up The P3 mode in conjunction with the G2 mode allows all the closed channels of a relay set up to be outputted le g displayed on the HP 85 s CRT While the Model 706 is in the P3 mode the middle decimal point is blinking 5 P4 The P4 command takes the Model 706 out of the in spect mode and returns to previous P scan mode Programming The following example il lustrates the P3 inspect mode Using the
152. le 2 4 lists all the front panel controls and buttons Their operation and function are briefly described in the table For complete details concerning the front panel controls refer to paragraph 2 7 Refer to Figure 2 2 for a view of the front panel controls 2 5 2 Rear Panel Description Table 2 5 lists all the rear panel connectors and terminals Their function and operation are briefly described in the table For complete details concerning the rear refer to paragraph 2 8 Refer to Figure 2 3 for a view of the Model 706 rear panel 2 3 103 409 3044 2 7 e1nBi4 904 24 Table 2 4 Front Panel Controls Control Description j POWER Turns the unit on or off CHANNEL Selects channel mode turns on the channel LED and displays channel information e g open or closed first or last Increments channel number by one each time it is acti vated when in the channel mode When activated the CLOSE button closes the presently displayed channel Close is indicated by a c on the far right digit of the display When activated the OPEN button opens the presently displayed channel Open is indi cated by an o on the far right digit of the display When activated the FIRST button specifies the presently displayed channel as the first channel of a multi channel configuration First is indicated by an F in the middle of the display When activated the LAST button specifi
153. lected by front panel Program 3 For more information concern ing the primary address selection refer to paragraph 2 9 4 3 4 BUS COMMANDS The Mode 706 may be given a number of special bus com mands through the IEEE 488 interface This section briefiy describes the purpose of the bus commands which are grouped into the following three categories 1 Uniline Commands Sent by setting the associated bus lines low 2 Multiline Commands General commands are sent with the ATN line low 3 Device Dependent Commands Special commands that depend on device configurations sent with ATN high Table 3 4 IEEE Bus Connector Contact Assignments Contact IEEE 488 Number Designation Type DIO1 Data DIO2 Data DIO3 Data DIO4 Data EOI 24 Management DAV Handshake NRFD Handshake NDAC Handshake IFC Management SRQ Management ATN Management SHIELD Ground DIO5 Data DIO6 Data DIO7 Data DIO8 Data REN 24 Management Gnd 6 Ground 7 Ground Gnd 8 Ground Gnd 9 Ground Gnd 10 Ground Gnd 11 Ground Gnd LOGIC Ground Numbers in parentheses refer to signal ground return of referenced contact number EOI and REN signal lines return on contact 24 The cable shield is normally connected to contact 12 This shield should be connected to ground only at the controller end to avoid ground loop problems 3 4 1 Unil
154. line commands The state of the ATN lines determines whether the data bus contains data or commands DATA SOURCE DAV SOURCE VALID i DATA DATA TRANSFER TRANSFER BEGINS ENDS Figure 3 2 Handshake Sequence 3 2 3 Data Lines The IEEE 488 bus uses eight data lines that transfer data one byte at a time 0101 Data Input Output 1 through 0108 Data Input Output 8 are the eight data lines used to transmit both data and multiline commands and are directional The data lines operate with low true logic 3 3 SYSTEM SET UP PROCEDURE There are two primary set up steps that prepare the system for operation The two steps are as follows 1 Bus Connections The Model 706 is connected to the bus via the rear panel connector It is a standard IEEE bus connector Maximum cable length for any device on the bus is 20 meters The Keithley Models 7008 3 and 7008 6 are ideal for connecting instruments to the bus Figure 3 3 and 3 4 show the connector pin assignments and the IEEE bus connector The connector contact designation are listed in Table 3 4 CONTACT 13 Em CONTACT 24 CONTACT 1 Figure 3 3 Contact Assignments CONTACT 12 Figure 3 4 Typicai Bus Connector 2 Primary Address Selection The primary address must be set to the appropriate value when using the 706 in the addressable mode The primary address is se
155. ll a Model 7057A into slots 1 2 and 3 of the Model 706 Select appropriate line voltage and turn on the Model 706 Press PRGM 6 Press 2 ENTER Press 0 0 1 FIRST Press 0 2 5 LAST Press INTERVAL 0 0 3 0 0 0 0 ENTER Press CHANNEL Press CONTINUOUS Press START STOP 2 12 Refer to paragraph 2 2 2 Selects PROGRAM 6 Selects the 2 pole mode refer to paragraph 2 9 for more information concerning front panel programs Programs channel 1 as the first channel Programs 25 as the last channel Programs the interval time for three seconds Turns on the CHANNEL LED selects the channel mode for display and resets the instrument to the first channel Turns on the CONTINUOUS LED and selects the continuous scan mode Initiates the continuous scan mode sequence and picoammeter give step by step instructions on how to measure low currents accurately In this example the Model 706 will be programmed to scan 37 low current sources Also the following parameters will be programmed into the Model 706 1 First channel is 1 2 Last channel is 37 3 Interval time is 2 seconds 4 Number of poles is 2 5 Use single scan mode Use the steps outlined in Table 2 12 to program the Model 706 for the preceding parameters As you can see this low current scan example is similar to the other scanning examples The only appreciable difference is
156. llows the user to store recall and inspect up to 75 different relay set ups The foBowing exemple will program store recall and spect three different relay set ups of which are in the matrix mode Programs 4 5 and 83 will be used throughout the example 1 Press RESET Reset the Model 706 2 Press PRGM 9 3 Activates the inspect mode and displays the following for approximately 0 5sec InSPECE After the inspect display the Model 706 reverts to the previously displayed channel or crosspoint with the blink ing decimal point Press PRGM 6 0 ENTER Activates matrix mode Press 0 0 1 1 CLOSE Closes crosspoint 001 1 Press 0 0 2 2 CLOSE Closes crosspoint 002 2 c Press 0 0 3 3 CLOSE Closes crosspoint 003 3 c Press PRGM 4 0 1 ENTER Stores the present relay set up in location 01 8 Press RESET Resets Model 706 9 Press 0 0 1 2 CLOSE Closes crosspoint 001 2 c 10 Press 0 0 2 3 CLOSE Closes crosspoint 002 3 c 11 Press 0 0 3 4 CLOSE Closes crosspoint 003 4 c 12 Press PRGM 4 0 2 ENTER Stores the present relay set up in location 02 13 Press RESET Resets the Mode 706 14 Press 0 0 1 3 CLOSE Closes crosspoint 001 3 c 15 Press 0 0 2 4 CLOSE Closes crosspoint 002 4 c 16 Press 0 0 3 1 CLOSE Closes crosspoint 003 1 c 17 Press PRGM 4 0 3 ENTER Stores the present relay set up in location 03 18 Press RESET Resets the Model 706 18 Press PRGM
157. lose Digit o Channel Open c Channel Closed NOTE Close and open for each channel remains valid even when not viewing the channel or the display FIRST Upon actuation of the FIRST button the presently dis played channel is designated as the first channel of a multi channel configuration If the presently displayed channel has al ready been specified as the first channel pressing the FIRST button has no effect on the channel or the display If the pres ently displayed channel has not been designated as the first channel the display format is as follows DI 01 Present Channel Channel Open Pressing the FIRST button designates the channel as first channel and the display format is as follows where 01 Present Channel F First Channel Channel Open There number of ways to change the designated first channel they are listed as follows A Select the desired new channel then press FIRST B Activate Program 99 C Activate Program 90 NOTE Powering the unit down will not change the desig nated first channel LAST Upon actuation of the LAST button the presently dis played channel is designated as the last channel of the multi channel configuration if the presently displayed channel has al ready been specified as the last channel pressing the LAST button has no effect on the channel or the display If the pres ently displayed channel has not been designated as the la
158. mber of channel Programming Example Enter the following statements into the HP 85 to set channel five as the first channel REMOTE 718 END LINE OUTPUT 718 F5X END LINE When END LINE is pressed the second time the Model 706 sets channel five as the first channel To display the channel mode send DO command To display channel 5 send a NOTE The number of channels for a particular con figuration is determined by the number of poles and Model 706 s daisy chained together 7 Prefix G When the Model 706 is addressed to talk the instrument sends a data string containing information on programmed channel data Through the use of the prefix command the operator has contro over whether or not the instrument sends the appropriate prefixes imbedded in the data string Refer to paragraph 3 5 1 for an example program The 19 prefix commands are as follows G0 Channel data transmitted with prefix Cnnnn Sn where C Present Channel Status of Present Channel 1 closed nnnn Number of Present Channel G1 Channel data transmitted without prefix nnnn n G2 Entire channel buffer state transmitted with prefix C0000 Sn C0001 Sn Cnnnn Sn G3 Entire channel buffer state transmitted without prefix 0000 n 0001 n e nnnn n G4 I O status port transmitted with prefix 1 0 where i Input from 0 to 377 octal o Output from 0 to 377 octal G5
159. me inter val time or first last channel data on talk The alternate output can also transmit the U commands with or without a prefix Programming Example To send and display the time and date enter the following program into the HP 85 COMMENTS Model 706 set to remote PROGRAM 10 REMOTE 718 END LINE 20 CLEAR 7 END LINE 30 OUTPUT 718 Clears Model 706 Sends time and date END LINE 40 ENTER 718 A Obtain data string 50 DISP A Display data string 60 END End of program The commands are as follows U0 Sending UO command outputs the present channel number The present channel number can be sent with or without a prefix depending on the present prefix mode G Refer to the flowchart in Figure 3 6 for the se quence of sending the and G modes Refer to paragraph 3 5 8 step 7 for information concerning the prefix modes and their formats U1 Sending the U1 command outputs all the channel numbers All the channel numbers can be sent with or without a prefix depending on the present prefix mode G Refer to the flowchart in Figure 3 6 for the se quence of sending the U and G modes Refer to paragraph 3 5 8 step 7 for information concerning the prefix modes and their formats U2 Sending the U2 command outputs the digital 1 0 port status The digital 1 port status can be sent with or without a prefix depending on the present prefix mode G Refer to flowchart in Figure 3 6 for the sequence o
160. n 1N914 E4 i E4 F6 2 C4 5 288 5 Connector 5 molex Connector 5 pin molex H5 1 E4 CS 288 5 Socket Display Board F6 2 C5 SO 65 Socket IEEE Cable H6 2 B4 50 68 Socket Interconnect Board D1 1 G3 5 84 40 Power Supply FG 1 PS 17 6 3 0101 0102 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 101 TK101 U101 10102 0103 9104 0105 0106 0107 0108 0109 0110 9111 0112 0113 0114 9115 9116 0117 0118 Table 6 3 Mother Board Parts List Cont Circuit Desig Description NPN Silicon Transistor 2N3904 PNP Silicon Transistor 2N3906 Resistor 3 3k 5 Composition Thick Film Resistor Network NOT USED Resistor 3 3k 5 W Composition Resistor 3 3k 5 Composition Resistor 3 3k 5 W Composition Resistor 3 3k 5 4W Composition Resistor 1000 5 W Composition Resistor 1000 5 Composition Resistor 1000 5 W Composition Resistor 1000 5 Composition Resistor 3 3k W Composition Resistor 1k 5 W Composition Resistor 100k 5 W Composition Resistor 51k 5 W Composition Resistor 5 23k 1 1 8W Metal Film Resistor 88 7k 1 1 8W Metal Film Resistor 30k 1 1 8W Metal Film Resistor 10k 5 W Composition Resistor 100k 5 W Composition Resistor 10k 5
161. n Although some in struments and accessories would normally be used with non haz ardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recog nize shock hazards and are familiar with the safety precautions re quired to avoid possible injury Read the operating information carefully before using the product Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures The American National Standards Institute ANSI states that shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present good safety practice is to ex pect that hazardous voltage is present in any unknown circuit before measuring Before operating an instrument make sure the line cord is connect ed to a properly grounded power receptacle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting cables or jump ers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the
162. n this procedure the relay set up is all relays open 4 Press PRGM 4 0 4 ENTER Selects Program 4 and stores the present relay set up in location 04 For simplici ty in this procedure the relay set up is all relays open 2 27 5 Press PRGM 4 0 5 ENTER Selects Program 4 and stores present set up location 05 simplici ty in this procedure the relay set up is all relays open 6 Press PRGM 9 4 Selects Program 94 and displays the following message Lr H3 This display informs the user that the clear program is ac tivated and is presently at memory location 05 7 Press ENTER Clears memory location 05 and returns to the previously shown channel display Press 9 4 Selects Program 94 9 Press 0 4 ENTER Clears memory location 04 and returns to the previously shown channel display 10 Press PRGM 9 4 Selects Program 94 11 Press 0 3 ENTER Clears memory location 03 and returns to the previously shown channel display After completing step 11 memory locations 3 4 and 5 cleared To verify that the locations have been cleared ac tivate Program 5 for locations 3 4 and 5 Use the following procedure to illustrate this 1 Press PRGM 5 Selects Program 5 recall 2 Press 0 5 Sets the instrument to recall memory location 05 and displays the following rEL 05 3 Press ENTER This step attempts to recall memory location 05 But when ENTER is pressed t
163. ocation drawings Table 6 3 con tains a parts list for the display board Table 6 4 contains a parts list for the mother board Table 6 5 contains a parts list for the digital 1 O board Table 6 6 contains a parts list for the interconnect board Table 6 7 contains a mechanical parts list for the Model 706 6 3 ORDERING INFORMATION To place an order or to obtain information concerning replacement parts contact your Keithley representative or the factory See the inside front cover for addresses When ordering include the following information 1 Instrument Model Number 2 Instrument Serial Number 3 Part Description 4 Circuit Description if applicable 5 Keithley Part Number 6 4 FACTORY SERVICE If the instrument is to be returned to the factory for service photostat and complete the copy of the service form which follows this section and return it with the instrument 65 COMPONENT LOCATION DRAWINGS AND SCHEMATIC DIAGRAMS Component location drawings and schematic diagrams follow the replaceable parts list in the order listed in Table 6 1 Table 6 2 Model 706 Index of Schematics and Compo nent Layouts Display Board Component Location Drawing Digital 1 O Board Component Location Drawing Mother Board Component Location Drawing Interconnect Board Component Loca tion Drawing Display Board Schematic Diagram Digital Board Schematic Diagram Mother Board Schematic Diagram Interconn
164. odel 706 as Sets one Model 706 as the master control of the the master of the configuration daisy chain configuration NOTE Initiating front panel PROGRAM 92 locks up the Model 706 front panel except for the power button PROGRAM 90 and 91 The following message is displayed while front panel PRO GRAM 92 is activated SLRUE 6 On the master control 706 press Selects PROGRAM 6 All programming will be done PRGM 6 on the master control 706 from this step on 7 Press 2 ENTER Selects the 2 pole mode Refer to paragraph 2 9 for more information concerning front panel programs 8 Press 0 0 1 FIRST Programs channel 1 as the first channel 9 Press 5 0 0 LAST Programs channel 500 as the last channel 10 Press INTERVAL 0 0 0 2 0 0 Programs the interval time for 0 2 seconds ENTER 11 Press CHANNEL RESET Turns on the CHANNEL LED selects the channel mode for display and resets to the programmed first channel 12 Press CONTINUOUS Selects the continuous scan mode and turns on the CONTINUOUS LED Initiates the continuous scan mode sequence MODEL 706 SERIAL OUT MODEL 706 MODEL 705 SERIAL IN SERIAL OUT SERIAL IN SERIAL OUT Figure 2 4 Daisy Chain Configuration 2 11 The display the daisy chain configuration includes addi tional digit to accomodate up to 500 channels 1000 channels in 1 pole mode The display is shown as follows IF o NOTE
165. ogram 90 Program 90 is not affected by power up Program 91 Program 91 is not affected by power up Program 92 Program 92 is not affected by power up Program 93 Program 93 is set to inactive Program 94 Program 94 is not affected by power up Program 99 Program 99 is not affected by power up FIRST The first function is not affected by power up LAST The last function is not affected by power up CLOSE All channels are open OPEN All channels are open channel 1 was previously programmed as the first channel last channel both or neither it is displayed as such The FIRST and LAST functions are not affected by power up To identify the previous state of the functions that are not af fected by power up simply activate the desired function When the function is activated the previous state for that function is displayed Refer to paragraph 2 5 1 for informa tion concerning the actuation of the desired function 2 4 ENVIRONMENTAL CONDITIONS All operation of the Model 706 should take place at an am bient temperature within the range of 0 C to 50 C up to 35 C at 80 noncondensing relative humidity Environmen tal conditions for storage are 25 to 65 NOTE the Model 706 internal operating temperature is higher than 75 C the thermal breaker on the power supply will open up This action will shut down the Model 706 Refer to Section 5 paragraph 5 5 3 2 5 OPERATING INSTRUCTIONS 2 5 1 Front Panel Controls Tab
166. ogramming language Programming Example To demonstrate an IDDC error enter the following statements into the HP 85 keyboard REMOTE 718 END LINE OUTPUT 718 X END LINE When END LINE is pressed the second time the error message in Figure 3 9a is displayed for about one second 3 9 2 No Remote Error A front panel no remote error message will be displayed if the Model 706 is not in the remote mode when it receives a com mand over the bus If an attempt is made to program the in strument when it is not in the remote mode the no remote message in Figure 3 9c will be displayed on the front panel for about one second Programming Example To make sure the instrument is not in the remote mode enter the following statements into the HP 85 LOCAL 7 END LINE Now enter the following programming statement into the keyboard OUTPUT 718 D1X END LINE When the statement is executed the no remote error message in Figure 3 9c is displayed on the front panel of the instrument for about one second 3 9 3 IDDCO Error An illegal device dependent command option IDDCO results when the Model 706 receives an invalid command such as A7 This command option is invalid because no op tion of 7 exists for the command A Programming Example To demonstrate an IDDCO error enter the following statements into the HP 85 keyboard REMOTE 718 END LINE OUTPUT 718 A7X END LINE When the END LINE key is pressed t
167. ommands Commands that directly affect the channels Table 3 6 Device Dependent Commands Not Available to Front Panel Display Mode D4 Display Message Prefix G0 Channel Data sent with prefix G1 Channel Data sent without prefix G2 Buffer State sent with prefix only closed channels if in P3 mode G3 Buffer State sent without prefix only closed channels if in P3 mode G4 1 0 Port sent with prefix 65 1 0 Port sent without prefix G6 Time Date sent with prefix G7 Time Date sent without prefix G8 Status Word sent with prefix G9 Status Word sent without prefix G10 Settle Time sent with prefix G11 Settle Time sent without prefix G12 Alarm Time sent with prefix G13 Alarm Time sent without prefix G14 Interval Time sent with prefix G15 Interval Time sent without prefix G16 First Last sent with prefix G17 First Last sent without prefix 18 Previous relay set up buffer location sent with prefix G19 Previous relay set up buffer location sent without prefix EOI transmitted on last byte out 1 Send EOI SRQ Mnnnn Trigger Start on Talk 1 Stop on Talk 2 Start on GET Stop on GET T4 2 Start on X 5 Stop on X T6 Start on External T7 Stop on External Alternate Output UO Channel U1 AII Channels U2 1 0 U3 Date U4 Status U5 Settling U6 Alarm U7 Interval U8 First Last U9 Previously recalled
168. onfiguration Card to Use 0 pole Matrix 2 and 4 pole 2 pole 1 2 or 4 pole 2 pole 2 pole 2 pole or 4 pole The 1 pole configuration can be used by operators who need to switch just one HI side of their configuration The 2 pole configuration can be used for normal measurements The 4 configuration can be used for 4 terminal ohms or a switched HI LO COM and Guard measurement The matrix mode 0 pole on the Model 706 can be used to switch any one point to another The pole configuration is displayed by activating Program 6 The pole configuration can be changed by activating Pro gram 6 and pressing the desired number 0 1 2 or 4 For ex ample use the following procedure to change the present pole configuration to 4 1 Press PRGM 6 Selects Program 6 and displays the POLE 2 NOTE Upon the actuation of front panel Program 99 the Model 706 sets the pole configuration to 2 Power up does not affect the pole configuration 2 Press 4 ENTER Loads 4 onto the display and when ENTER is pressed the pole configuration is set to 4 The Model 706 then reverts to the channel mode turns on the channel LED and dislays the programmed first channel NOTE Before pressing the ENTER button in step 2 the Model 706 ignores the entry of any invalid number 3 5 6 7 8 9 for this program To verify that the pole configuration was changed to 4 press Program 6 and the display shows that it was chan
169. ong Phillips Pan Head Screws Socket Display Board J1010 Socket IEEE cable J1011 Socket Interconnect Board J1020 Socket U106 and U107 Contact I O Board P1009 Connector Board Bracket I O Board a Pem Nut 6 32 b Standoff 6 32 Board to I O Bracket Screws 4 40 x 1 4 Phillips Pan Head Screw Board to Mounting Rail Screw 6 32 x 1 4 long Phillips Pan Head Screw Bracket Power Supply to side panel Cabie Clamp Power Supply Bracket to Side Panel Screws 10 32 x 3 8 long Phillips Pan Head Screw Support Power Supply to mounting rail Spacers Power Supply to bracket Rear Bezel Top Cover Bottom Cover Rear Foot Front Foot Decorative Strip Assembly Line Cord P1001 Line Cord European Card Edge Connector Label for Rear Bezel Bottom 706 311 706 314 CA 20 1 CS 454 2 FA 99 706 312 S5570 50 65 0 68 0 84 40 50 69 5 276 5 287 5 706 323 706 336 CC 18 706 342 177 1 706 313 706 319 706 320 706 316 706 317 706 321 7 26 CS 444 2 MS 343 wt A 6 9 econo ______ mee 0 90 2s lik 5 2 324 Var Loa Canes Ana ty kasta gt IC 9209 POO 21 10 RED 420 4208 b b TEM EI 60 3 ps20 B2 DD 30 _ 05202
170. ons are bad Checked all cables Display or output check one Drifts 2 Unable to zero J Unstable Will not read applied input LY Overload 1 Calibration only 1 Certificate of calibration required 1 Data required attach any additional sheets as necessary Show a block diagram of your measurement system including all instruments connected whether power is turned on or not Also describe signal source Where is the measurement being performed factory controlled laboratory out of doors etc What power line voltage is used Ambient temperature F Relative humidity Other Any additional information If special modifications have been made by the user please describe Be sure to include your name and phone number on this service form KEITHLEY Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A
171. onsists of three handshake lines which operate in an interlocked sequence The interlocked sequence ensures reliable data transfer regardless of the transfer sequence The slowest device on the bus usually determines the rate of transfer The three handshake lines are 1 DAV Date Valid 2 NRFD Not Ready For Data 3 NDAC Not Data Accepted The DAV line is controlled by the source The NRFD and NDAC lines are controlled by the accepting devices The complete handshake sequence is shown in Figure 3 2 This sequence handles information one byte at a time Once the data is on the bus the source checks to see that NRFD is high At the same time NDAC should be low from the previous byte transfer Once the NRFD and NDAC lines are properly set the source sets the DAV line low The NRFD line goes low the NDAC line then goes high once all the devices on the bus have accepted the data Each device releases the NDAC line at its own rate but the NDAC line will not go high until the slowest device on the bus has accepted the data After the NDAC line goes high the source sets the DAV line high indicating that the data is no longer valid At this point the NDAC line goes low The NRFD line is released by each device on the bus but does not go high until the slowest device on the bus has released the line The bus is now set to repeat the sequence with the next data byte The sequence just described is used to transfer both data and multi
172. or for the external trigger line The external trigger input is routed into the circuitry via R111 and pin 40 of the VIA U120 The channel ready output produces a TTL level negative going pulse of greater than 10usec by way of R108 and pin 15 of the VIA when programmed to do so The control of the relay switching is accomplished by the paral lel data on the data bus being buffered by U110 and sent ADDRESS DECODER 51 38 ADDRESS BUS a lt BUFFERS 5 AND E DEC RENT MT DATA BUS 2 ete Utt 15138 5 LINE U142 5138 9 DRIVER 9118 1 5244 U104 U119 LS138 U122 4050 126 1 5125 WATCHD0G 9115 8211 DISPLAY BOARD CLOCK TIME DATE 2 0123 1121 BAT 4094 1930 ERE BUS IEEE INTERFACE 48V POWER SUPPLY PS 17 DIGITAL COMMON Figure 4 1 Model 706 Block Diagram ASAE HEE SES ROUTE MEE ERLE IE LNAI TEE aD ADDRESS IN HEX COMPONENT 0000 2k 8 CMOS MEMORY 6116 1FFF 2000 2 8 CMOS MEMORY 6116 3FFF 4000 ACIA SERIAL 68A50 CHIP 5FFF STROBE LINES FOR MATRIX CARD SHIFT REGISTERS 6FFF FOIE VIA VERSATILE 6522 INTERFACE ADAPTER _ IEEE INTERFACE
173. pply E Remove the power supply from the mainframe NOTE When installing the power supply make certain that the jumpers on the input terminals are config ured for the available AC line voltage Refer to paragraph 5 3 7 the mother board as follows A Disconnect the cable that connects the mother board to the interconnect board J P 1020 Disconnect the cable that connects the mother board to the IEEE connector J P 1011 Disconnect the cable that connects the mother board to the digital board J P 1009 Disconnect the cable that connects the mother board to the display board J P 1010 With the bottom panel removed turn the Mode 706 up side down and remove the six screws that secure the mother board to the mainframe F Remove the two power supply wires G and G at the supply Remove the wire that goes to the G inter connect hole G Remove the mother board To install the mother board reverse the above proce m o m Hemove the display board as follows A Using a short Phillips screwdriver remove the four screws that secure the display board to the front panel B Remove the display board C To install the display board reverse the procedures in steps and B Remove the interconnect board as follows NOTE This procedure assumes that the mother board and the power supply are removed A Removethe three screws that secure the interconnect board 10
174. program number 2 Press 1 This action selects Program 1 and displays the following H E Which Format where American or International 0 American Date Format 1 International Date Format Notice that the last digit s C segment is flashing This prompts the user to enter the appropriate data 3 Press 1 This action selects the international date format _ 4 Press ENTER This action displays the data in the interna tional date format and turns on the DATE LED To enable program 1 and select the american date format use the following procedure 1 Press PRGM Selects program mode displays Pro and turns off the DATE LED 2 Press 1 Select Program 1 and the following is displayed Selected From Previous Procedure 3 Press 0 This selects the american date format and turns on the DATE LED 4 Press ENTER This displays the date in the american date format and turns on the DATE LED NOTE The date format is battery backed up Shutting off the power to the unit does not affect the date format It will remain as programmed until it is reprogrammed The date as well as the time continues to run even when power to the instrument is shut off The reason for this is that the clock s power circuitry is backed up by battery BT101 2 19 Setting changing the date is simple as selecting the date format For example use the following procedure to set the date in americ
175. pted 2 During the sequence pressed the START STOP button is 3 RESET button is pressed 4 PRGM button is pressed 5 DATE button is pressed 6 TIME button is pressed 7 CHANNEL button is pressed In the continuous scan mode all the programmed channels are scanned sequentially and the scan sequence is repeated continuously The continuous scan is started by pressing the START STOP button and it operates as follows 1 The START STOP LED is turned on 2 The programmed first channel is closed for the programm ed interval rate and then opened 3 The Model 706 then advances to the next channel closes for the programmed interval rate and then opens it 4 This sequence is repeated up to and including the pro grammed last channel At this point the Model 706 reverts to the programmed first channel and repeats the sequence continuously To help illustrate a continuous scan sequence we will choose the following parameters For the sake of simplicity we will use the Model 7056 general purpose scanner card 1 First channel is 1 2 Last channel is 100 3 Interval time is 0 3 seconds 4 Number of poles is 2 5 Use continuous scan mode Use the steps outlined in Table 2 8 to program the Model 706 for the preceding parameters Table 2 7 Single Scan Example Install the three Model 7056 scan ner cards into slots 1 2 L and of the Model 706 Select appropriate line voltage and turn on the Model 706
176. r except in the daisy chain or matrix mode Upon power up the Model 706 reverts to the channel mode Pressing the CHANNEL button while the Model 706 is in the channel mode increments the channel number by one Actuation of the clock date PRGM single continuous or interval functions takes the Model 706 out of the chan nel mode Actuation of the reset function during any of the front panel programs except Programs 90 91 92 and 99 reverts the Model 706 to the channel mode OPERATION The OPERATION group consists of four function buttons FIRST LAST CLOSE and The buttons are described as follows CLOSE Upon actuation of the close function the presently displayed channel closes the presently displayed channel is already closed pressing the CLOSE button has no effect on the channel When the presently displayed channel is open and the CLOSE button is press ed the open and close digit furthest digit on the right of the display changes to a c and that channel is closed Refer to the following display Open and Close Digit Channel Open Channel Closed Table 2 14 Setting the Date Press DATE Press the DATA buttons 0 9 that correspond to the desired date Press PRGM 1 Press 0 ENTER Press 0 8 1 8 ENTER EUIS MMC ere Selects the date mode for display and turns on the DATE LED For example to set the date to August 18th for the American date forma
177. r alarm End of settle time Broken serial loop Oo gt Upon power up after DCL SDC 5 is disabled the bus response may be programmed as follows 1 M0 No SRQ 2 M1 M63 Send SRO Refer to Table 3 9 for conditions that generate a SRO NOTE Upon power up the M0 mode is selected The SRO byte is cleared a read of the serial poll byte Table 3 9 SRQ Commands and Conditions Broken End of Command Serial Loop Settle Time M M1 2 4 5 6 7 M8 M9 gt gt gt gt x gt gt gt gt gt gt gt x x gt gt gt gt gt gt gt gt x xX X x X 3 16 Interval End of Timer IDDC IDDCO Time Scan Alarm No Remote X Table 3 9 SRQ Commands and Conditions Broken End of interval Timer IDDC IDDCO Command Serial Loop Settle Time Time Alarm No Remote X X X M22 M23 M24 M25 M26 M27 M28 M29 M30 M31 M32 M33 M34 M35 M36 M37 M38 M39 M40 M41 M42 M43 M44 M45 M46 M47 M48 M49 M50 M51 M52 M53 M54 M55 M56 M57 M58 M59 M60 M61 M62 M63 Indicates conditions that generate an SRO MO disables SRQ gt lt X X KK gt x gt x gt gt X gt gt gt lt gt gt gt gt gt X X X X X X X X X X x X gt x gt lt gt lt X X X X gt lt X X gt lt X X X gt X X X
178. rd Parts List Octal D Type Flip Flop 74C374 Octal Type Flip 74C374 D Type Flip Flop 74C374 Octal Type Flip 74 374 Octal D Type Flip Flop 74C374 Octal D Type Flip Flop 74C374 Octal D Type Flip Flop 74C374 Octal D Type Flip Flop 74C374 Type Flip 74C374 Octal D Type Flip Flop 74C374 Octal D Type Flip Flop 740374 Octal Type Flip Flop 740374 Octal Type Flip Flop 740374 Octal D Type Flip Flop 740374 NOTE G2 3 C4 2 2 2 2 04 2 2 04 02 2 04 2 2 4 F2 2 E4 G2 2 E4 2 1 4 2 1 4 C2 1 F4 D2 1 G4 C2 3 G4 B2 3 G4 A2 3 H4 Circuit Location Keithley Desig Description Sch Pcb Part No The interconnect board schematic consists of three pages The location of the components on which page is noted by the dash numbers in the location schematic column Tabie 6 6 Model 706 Mechanical Parts List Side Pane Assembly Front Bezel Assembly Front Bezel Assembly Modified Front Panel contains a and b a 2 56 1 4 Long Pem stud b 44 40 x 7 16 long clinch standoff Standoff Front Panel Overlay AC Line Switch 5101 Pushbutton Red Connector Plug Connector Pin Cable Assembly Display Board P1010 Pushbutton Yellow Brown Pushbutton Light Brown Pushbutton Brown Pushbutton Dark Brown Cable Assembl
179. rd Slots Each slot accepts one scanner card There are a total of 10 slots SER OUT The serial output connector is a female BNC connector that provides connection to another Model 706 for a daisy chain configuration The alarm function of this female BNC connector outputs a pulse when the programmed alarm time is reached The serial in function is used in a daisy chain configuration where serial in is connected to the serial out of another Model 706 This female BNC connector outputs a pulse at the completion of the pro grammed channel settling time This is a female BNC connector that initiates the selected scan mode upon receiving the proper signal pulse The digital 1 0 port consists of 16 digital input output lines along with four lines that and IEEE common This standard connector provides connection to the IEEE 488 bus ALARM SERIAL IN CHANNEL READY EXT TRIGGER DIGITAL I O IEEE 488 INTERFACE CONNECTOR FUSE The line power fuse provides protection for the AC power line input and is rated as shown in Table 2 1 The line power receptacle mates with three wire line cord and applies the line power to the instrument AC Power Receptacle 2 5 3 Basic Front Panel Operation A Select the first channel 1 Press the desired channel number from the DATA This section provides the information necessary for basic group buttons 0 9
180. red during transit Report any damage to the shipping agent Retain and use the original packaging materials if reshipment is necessary The following items are shipped with all Model 706 orders eModel 706 Scanner eModel 706 Instruction Manual eOptional accessories per request Cards are shipped separately 1 7 SPECIFICATIONS For Model 706 detailed specifications refer to the specifica tions that precede this section 1 8 OPTIONAL ACCESSORIES Switching Cards Keithley offers over 20 different models of switching cards addition to general purpose scanning and matrix applications cards are designed for special applications with signal handling capabilities that include Low voltage switching to 20nV Low current switching to 10fA e High frequency switching to 500MHz e Thermocouple switching with a precision temperature refer ence e High voltage switching to 1000V Further details on switching cards can be obtained by contact ing a Keithley representative or sales office Model 7008 3 IEEE 488 Cable The Model 7008 3 is a 1 me ter 3 feet IEEE 488 cable The cable has 24 stranded wire conductors and is terminated on each end with IEEE 488 stan dard connectors Model 7008 6 IEEE 488 Cable The Model 7008 6 is a 2 me ter 6 feet IEEE 488 cable The cable has 24 stranded wire conductors and is terminated on each end with IEEE 488 stan dard connectors Model 7010 Cable Adapter The Mod
181. rement modes and program the Model 706 as a master slave or stand alone instrument in a daisy chain configuration The Model 706 may also be operated in a matrix configuration The time and date are kept internally with a battery backed up clock allowing time dependent procedures to be performed 1 2 MODEL 706 FEATURES The Model 706 scanner includes the following features eUp to 100 2 pole channels e EEE 488 bus operation eSelectable scan rate of 10msec to 999 999sec eSelectable scan modes that enable the user to scan the first channel to the last channel once continuously or manually eFifteen internal programs that are accessible from the front panel eModel 706 mainframe can accomodate 10 scanner plug in cards eSeveral different plug in scanner cards are available as op tions They include a general purpose relay card a ther mocouple card low voltage card low current card high current card high voltage card matrix card and universal in terface card eTime and date are kept with a battery backed up clock eDigital I O port with eight lines as inputs and eight lines as outputs eExternal trigger input that accepts a greater than 2ysec negative going TTL compatible pulse for triggering the Mode 706 into a scan sequence eChannel ready output that outputs a greater than 10ysec negative going TTL compatible pulse upon the completion of the programmed channel settling time eAlarm output that outputs a negati
182. rification 3 1 BUS ______________________ 3 2 Handshake 3 3 Contact m eor a sss m 3 4 Typical Bus Connector _____ 3 5 Digital O Port Pin Assignment 3 6 Mode Sequence REFS usd ews 3 7 Status Byte Format css haa 3 8 Status Word Format 3 9 IEEE Display Error Messages s s x 9 eee sate 4 1 Model 706 Block Diagram 42 Model 706 Memory Map u s ka mex ER RR 5 1 Top and Bottom Cover Removal Vrae 5 2 Power Supply Exploded View susce eR eee daw Keds 5 3 706 eR ea soe aUis E ERR Pec RA 6 1 Display Board Component Location Drawing Dwg No 706 110 6 2 Digital Board Component Location Drawing Dwg No 706 170 6 3 Mother Board Component Location Drawing Dwg No 706 110 6 4 interconnect Board Component Location Drawing Dwg
183. s Run Debug Test EOI transmitted on last byte out 1 Send no EOI Lnnnn Mnnnn Nnnnn Onnnn Step 1 Single 2 Continuous inspect Mode 4 Disable Inspect Mode return to previous P mode Qhh mm ss x Table 3 7 Model 706 Device Dependent Commands R Reset Set Time Trigger Opens all channels and displays FIRST channel Shh mm ss 0 Start on Talk 1 Stop on Talk T2 Start GET Stop GET Start on X T5 Stop on X 6 Start on External T7 Stop on External Channel U1 Channels U2 1 0 Date UA Status U5 Settling U6 Alarm U7 interval U8 First Last U9 Previously recalled buffer location Vmm dd Wnnn nnn Yc Z1 Z2 23 24 25 275 Alternate Output Set Date Set Interval Time Terminator Recall 3 11 3 12 Table 3 8 Hierarchy of Command Execution Display Mode D0 Channel D1 Interval Time D2 Time D3 Date D4 Display Message Step P1 Single P2 Continuous Inspect Mode 4 Disable Inspect Mode return to previous P mode TO Start on Talk T1 Stop on Talk T2 Start on GET Stop on GET T4 Start on X 5 Stop on X T6 Start on External T7 Stop on External GO Channel Data sent with prefix G1 Channel Date sent without prefix G2 Buffer State
184. st channel the display is as follows _ where 01 Present Channel o Channel Open Pressing the LAST button designates the channel as last chan nel and the display format is as follows IB L a where 10 Present Channel L Last Channel o Channel Open There are two ways of changing the designated last channel they are listed as follows 2 15 Select desired new channel and press LAST B Activate Program 99 NOTE Powering the unit down will not change the designated last channel If the presently displayed channel is designated as the first and last channel the display format is as follows Flo where 10 Present Channel F First Channel L Last Channel Channel Open 4 CONTROL The CONTROL group of buttons consist of the RESET button and the INTERVAL button The buttons and their functions are descr bed as follows RESET Actuation of the RESET button opens all chan nels of the Model 706 and reverts the display to the designated first channel Actuating the RESET button dur ing a single or continuous scan mode sequence stops the scan sequence opens all channels and reverts the display to the designated first channel The RESET button is inac tive in the time date interval and Programs 8 90 91 92 and 99 INTERVAL The INTERVAL button selects the program med interval time for display The interval time is the pro grammed time each channel is closed wh
185. st the Model 706 turns on all the segments in the display and also turns on the CHANNEL INTERVAL CON TINUOUS SINGLE START STOP TIME DATE TALK LISTEN and REMOTE LEDs The turned on display segments are shown as follows IBBRHBHB This is a display test The operator can note inoperative display segments by comparing the Model 706 display with the preceding figure In addition the push button and the TALK LISTEN and REMOTE LEDs turn on All LEDs are turned on simultaneously if operating correctly While all the LEDs are on the Model 706 is performing a cyclic rundun dancy check CRC of the ROM circuitry A digital self test of the RAM circuitry is also performed at this time If the digital self test reveals a problem with the RAM circuitry the Model 706 displays the following for approximately 0 5 seconds rH After this display the Model 706 displays the following FAIL the CRC reveals problem with the ROM the Model 706 displays the following for approximately 0 5 seconds After this display the 706 displays the following FAIL If the self test and the CRC both reveal problem the Model 706 displays the RAM and ROM error messages and then displays the fail message When either test does not reveal a problem the Model 706 displays the following message which indicates that both tests have passed PASS After the pass message the Model 706 reverts to
186. string in which the invalid com mand appears 2 Set appropriate bits in the status byte 3 Generate an SRQ if programmed to do so 4 Display an appropriate front panel error message Device dependent commands are sent as a string of several ASCII characters Some examples of valid command strings include FOX Single command string F001B2X Multiple command string B1 X Space is ignored Examples of invalid command strings are 0X Invalid command is not a command D6X Invalid command option 6 is not an option of the D command The numbers after the command are each interpreted as a decimal integer For example T01 0X Interpreted as T1X TX Means Figure 3 9 shows the front panel error messages used by the Model 706 The message in Figure 3 9 a results from an il legal device dependent command IDDC while the message in Figure 3 9 b results from an illegal device dependent com mand option IDDCO The no remote message in Figure 3 9 c results from attempting to program the instrument when it is not in the remote mode iddL a Illegal Device Dependent Command iddL D b Device Dependent Command Option IDDCO no c No Remote Figure 3 9 IEEE Display Error Messages 3 9 1 IDDC Error An error results when the Model 706 receives an invalid command such as X This command is invalid because no such letter exists in the instrument s pr
187. t follow steps 3 4 and 5 Selects front panel PROGRAM 1 for display Selects the American date format Enter 08 18 for the date August 18th Pressing the DATE button during a scan sequence stops the sequence turns on the DATE LED and selects the date mode for display 2 14 ensure reliable performance do not simultaneously close more relays than the mainframe power supply can handle The closure limit depends on factors such as the drive current of each relay temperature and ventilation Table 2 15 lists the maximum current available from the main frame power supply for energizing relays under different operat ing conditions To find the maximum number of simultaneous relay closures divide the current listed by the specified drive current per relay Remember that some cards energize two re lays for each channel e g Models 7063 and 7067 Table 2 15 Maximum Relay Drive Current from Mainframe Rack mount 1 space between Rack mount No space Bench top Louvers OPEN Upon actuation of the open function the presenily dis played channel opens If the presently displayed channel is al ready open pressing the OPEN bution has no effect on the channel When the presently displayed channel is closed and the OPEN button is pressed the open and close digit furthest digit on the right of the display changes to an o and that channel is opened Refer to the following display Open and C
188. the instrument to the first channel Turns on the SINGLE LED and selects the single scan mode Initiates the single scan mode sequence Table 2 13 Setting the Time Press TIME time for 7 30 A M press 0 7 3 0 0 0 ENTER _ Step Action Comments Press the DATA buttons 0 9 that correspond to the desired time For example to set the Selects the time mode for display and turns on the TIME LED Set the time for 7 30 A M Pressing the TIME button during a scan sequence stops the sequence turns on the TIME LED and selects the time mode for display 2 13 Upon the actuation of the ENTER button the time is set to 7 30 A M As another example set the time to 7 30 P M by pressing 1 9 3 0 0 0 ENTER To display the DATE mode simply press the DATE button The date is displayed in one of two formats The formats are the American date format and the International date format These formats are described in paragraph 2 9 2 The formats are selected exclusively by front panel Program 1 Refer to paragraph 2 9 for complete details concerning the front panel programs To set the date use the steps outlined in Table 2 14 As another example set the date to August 18th for the inter national date format by pressing 1 PRGM 1 Selects front panel Program 1 for display 2 1 ENTER Selects the international date format 3 1 8 0 8 ENTER Enters 18 08 for the date August 1
189. the previously shown display For example if the Model 706 was set to 01 F o then that is the display it will revert to after the pass message 2 9 10 Program 90 Stand Alone Program 90 is used to program a Model 706 out of the master and slave programs Programs 91 and 92 respectively into normal front panel operation Once Program 90 is activated the Model 706 operates as a stand alone instrument This means that even if it is connected in a daisy chain configura tion the Model 706 will not be the master control or a slave in the configuration To activate Program 90 use the following procedure 1 Press PRGM Selects program mode 2 Press 9 0 After pressing the 0 button the Model 706 displays the following two messages and reverts to the channel mode The CHANNEL LED turns on the pro grammed first and last channels are set to 1 and channel 1 is displayed SE And NOTE After actuating program 90 cycle power to the instrument or activate Program 99 in order to set the ALARM SERIAL IN connector to alarm out put 2 9 11 Program 91 Master Program 91 is used to set the Model 706 as the master control of a daisy chain configuration The designated master Model 706 is the only unit in a daisy chain configuration that has front panel control All operation a daisy chain configura tion is controlled from the master Model 706 If the Model 706 is not connected a daisy chain configura tion or the other daisy chained
190. the START STOP button in step 13 the continuous scan sequence starts from the progammed first channel The continuous scan mode operates in the same manner as described in example 3 The only difference is that this example will scan 500 channels and then repeat the sequence continuously Pressing the START STOP button during a continuous scan sequence stops the scan at the presently displayed channel The channel remains closed and the START STOP LED turns off To continue the scanning sequence from the presently displayed channel press the START STOP button The first and last channels are not battery backed up in the daisy chain configuration To stop the scanning sequence and reset the Model 706 to the programmed first channel which is 1 in this example simply press the RESET button Table 2 10 Daisy Chain Example Install the Model 7056 scanner cards into the Model 706 mainframes 2 Set up the circuit shown in Figure 2 4 3 Select appropriate line voltage and turn on the Model 706 scanners by pressing PRGM 9 1 Press START STOP MODEL 706 CONTROL MAINFRAME MODEL 706 SERIAL IN SERIAL OUT SERIAL IN SERIAL OUT SERIAL IN Step Action Comments Refer to 2 2 2 4 Program 4 Model 706 as Programs the Model 706 as slaves in the daisy slave by pressing PRGM 9 2 on chain configuration each 706 5 Select the remaining M
191. the bottom mounting rail B Remove the three screws that secure the interconnect board to the top mounting rail C Push the interconnect board towards the front panel and disconnect the 10 shields from the shield fasten ers on the interconnect board D Lift the interconnect board out of the mainframe E To install the interconnect board reverse the proce dure in steps A through D 10 Remove the rear panel as follows A Remove the four screws that secure the rear panel to the mainframe B The ALARM SERIAL IN SERIAL OUT EXT TRIG 5 3 GER CHANNEL READY LINE FUSE Input Power C To install the rear panel align the rear panel in place and Receptacle and IEEE 488 Interface connectors are still install the four screws that secure it connected to their appropriate places in the main 11 reassemble the Model 706 reverse the procedures frame Be careful when removing the rear panel so as outlined in steps 1 through 10 not to damage the connectors AC Input DC Output Figure 5 2 Power Supply Exploded View Decorative Strip 706 321 Bracket Supply to side panel n 706 336 E Power Supply PS 17 Green Ground Wire Supply to rail 706 342 Motherboard EUN Board to Motherboard Cable Connector o J1009 Display Board Display Board to Motherboard Cable Connect 1010 Output Cable Connector J1007 IEEE to motherboard NT connector J1011
192. the default conditions that are listed in Table 2 3 NOTE upon power up the Model 706 displays the slave or no loop message refer to paragraphs 2 9 11 and 2 9 12 activate Program 90 to return the Model 706 to normal operating conditions To activate Program 90 press PRGM 9 0 Table 2 3 Power Up Default Conditions Front Panel Operation Function or Default Conditions CHANNEL Channel mode is selected channel 1 is displayed and all channels are open TIME Time is not affected by power up DATE Date is not affected by power up RESET Reset is not affected by power up INTERVAL Interval time is not affected by power up SINGLE Single scan mode is set to inactive CONTINUOUS Continuous scan mode is set to inactive START STOP Start Stop function is set to stop Program 0 Digital 1 0 outputs are set to 000 the inputs are not affected by power up Program 1 Date format is not affected by power up Program 2 Settle time is not affected by power up 1 Program 3 Primary address is not affected by power up Program 4 Save relay set up is cleared from display but still in memory Channel 1 is displayed Program 5 Recall relay set up is cleared from display but still in memory Channel 1 is displayed Program 6 Number of poles is not affected by power up Program 7 Alarm time is set to 00 00 00 Program 8 Self test is not activated Pr
193. the settle time is greater than the interval time the CHANNEL READY output pulse does not appear upon the completion of a scanning sequence 2 9 4 Program 3 Set IEEE Primary Address Program 3 is used to set the primary address of the Model 706 for IEEE 488 bus operation The primary address of the Model 706 is factory set to 18 but it may be set to any value between 0 and 31 via front panel Program 3 This is a conve nient feature that eliminates the cumbersome rear panel swit ches that are generally used in other instruments to set primary address The primary address specified the controller s programm ing language must agree with the primary address of the Model 706 Front panel Program 3 is the only way to change the Model 706 s primary address NOTE If other instrumentation is connected to the bus be sure that each device has a different primary address If the precaution is not observed er ratic operations may result To initiate Program 3 and change the primary address to 22 use the following procedure 1 Press PRGM Selects the program mode and displays Pro 2 Press 3 Selects Program 3 and displays the following IE IB where IE IEEE indicator 18 Primary Address 3 Press 2 2 ENTER This step loads the number 22 onto the display Pressing the ENTER button programs the primary address to 22 and reverts the Model 706 to the channel mode at the previously displayed channel 4 Press PRGM
194. tion is as follows Lnnnn where L Set last channel command n Number of channel Programming Enter the following statements into the HP 85 to set channel 10 as the last channel REMOTE 718 END LINE OUTPUT 718 L10X END LINE When END LINE is pressed the second time the Model 706 sets channel 10 as the last channel To display channel 10 and verify it is programmed as the last channel type the following statement into the HP 85 OUTPUT 718 B10X END LINE NOTE The number of channels for a particular con figuration is determined by the number of poles and Model 706 units daisy chained together 13 SRO M The letter M is the command mode The SRQ mode controls which conditions within the instument generates a SRO Service Request Once SRO has been generated the status can be checked to determine if the SRQ was generated by the Model 706 In addition other bits in the status byte are sent depending on certain data and error conditions For more information concerning the SRO byte and SRQ mask refer to paragraph 3 5 5 14 Open Channel N The letter N is the command to open a specific channel The format for the open channel command is as follows Nnnnn where Open channel command Number of channel Programming Enter the following statements into the HP 85 to program the Model 706 to open channel 7 REMOTE 718 END LINE OUTPUT 718 7
195. uspect that a hardware pro blem is causing fault when it was the software that was causing the problem all along 3 1 2 HP 85 BASIC Statements Many of the programming instructions covered in Section 3 use examples written in Hewlett Packard Model 85 BASIC The HP 85 was chosen for these examples because it has a large number of BASIC statements that control 488 operation This section covers those HP 85 BASIC statements that are essential to Model 706 operation A complete list of HP 85 BASIC statements is shown in Table 3 1 All the statements in the table have one or three digit arguments that must be specified The first digit is the HP 85 interface select code which is set to 7 at the factory The last two digits of those statements that require a three digit argu ment specify the primary address Generally only those com mands that actually require an address to be sent over the bus require that the primary address be specified in the BASIC statement Those statements in the table with three digit arguments assume that the primary address of the device is set at 18 Other primary addresses require that the last two digits be set to the corresponding value For example to send a GTL com mand to device 22 the following BASIC statement would be used LOCAL 722 Some of the statements in the table have two forms the ex act configuration used depends on the desired command For example CLEAR 7 will cause a DCL to be s
196. ve going TTL level greater than 10 pulse when the programmed time is reached 1 3 WARRANTY INFORMATION Warranty information is provided on the inside front cover of this manual If there is a need to exercise the warranty con tact your Keithley representative in your area to determine the proper action to be taken Keithley maintains complete repair and calibration facilities in the United States West Germany Great Britain France the Netherlands Switzerland and Austria Information may be directed to the applications engineer at any of the above locations Check the inside front cover of this manual for addresses 1 4 MANUAL ADDENDA Improvements or changes to this manual will be explained on an addendum included with this manual 1 5 SAFETY SYMBOLS AND TERMS Safety symbols used in this manual are as follows The symbol the instrument denotes that user should refer to the operating instructions The symbol the instrument denotes that high voltage may be present on the terminals The WARNING used in this manuai explains dangers that could result in personal injury or death The CAUTION used in this manual explains hazards that could damage the instrument 1 6 UNPACKING AND INSPECTION The Model 706 is inspected both electrically and mechanically before shipment Upon receiving the Model 706 unpack all items from the shipping container and check for any obvious damage that may have occur
197. xternal Alternate output is not affected Date is not affected Interval time is set to 000 010 seconds CR LF Recall is not affected fect This is of course because of the previous mand NOTE To get the Model 706 out of the local lockout condition send a GTL Go To Local command refer to paragraph 3 4 3 step 3 3 SPE Serial Poll Enable The serial poll enable sequence is used to obtain the Model 706 status byte Usually the serial polling sequence is used to determine which of several devices has requested service over the line The serial polling sequence is conducted as follows The controller sets the line true B The SPE command is placed on the bus by the con troller The Model 706 is addressed to talk The controller sets the ATN line false The instrument then places its status byte on the bus to be read by the controller The controller then sets the ATN line low and places SPD on the bus to end the serial polling sequence moo SPE Programming Example The 85 SPOLL state ment automatically performs the serial polling sequence To demonstrate serial polling momentarily power the unit down and enter the following statements into the HP 85 keyboard REMOTE 718 END LINE SPOLL 718 END LINE DISP S END LINE When the END LINE key is pressed after the SPOLL 718 statement the computer performs the serial polling s
198. y IEEE P1011 a Connector J1002 b Cable Fuse Holder Body Fuse Carrier a 5 size b 3AG size Line Filter J1001 Connector Receptacle J1018 Connector Pin Mounting Hardware IEEE Rear Panel Assembly 2 1 1 1 2 4 2 1 1 1 1 2 1 1 6 6 12 1 1 1 1 1 Keithley Part No 706 301 706 303 706 304 706 305 ST 155 1 706 307 SW 420 29465 3 CS 325 2 CS 246 CA 15 2 31470 4 31470 5 31470 6 31470 7 CS 467 21 1 24 26 25 LF 2 CS 326 2 CS 245 CS 378 706 309 CS 249 6 7 Table 6 6 Model 706 Mechanical Parts List Cont Keithley Description Qty Part No Connector Receptacle J1013 to PS 17 CS 326 2 Connector CS 245 Connector Plug P1015 CS 325 4 Connector to P1015 CS 246 Connector Receptacle J1015 CS 326 4 Connector to J1015 CS 245 Connector P1007 CS 287 5 Connector CS 276 Grommet Insulates Board from case 28479 5 Mounting Rail Assembly 706 311 Guide 706 315 Interconnect Board Mounting Rail Assembly a Mounting Rail Assembly b Board Support Bracket Interconnect Bracket to Mounting Rail Screws 6 32 5 16 long Phillips Pan Head Screw interconnect Board Cable Assembly P1020 Interconnect Board Connector J1021 through J1030 Fastener Scanner Card Shields Shield Mother Board to Mounting Rail and Front Bezel screws 6 32 x 1 4 Long Phillips Pan Head Screws Mounting Rails to Side Panels Screws 10 32 x 3 8 l
199. y along with the present memory location Pressing the START STOP button in the matrix mode and while the recall display is shown advances the instrument to the next memory location Pressing the CHANNEL button while the recall display is shown selects the channel display mode By repeatedly pressing the CHAN NEL button the crosspoints of that memory location are displayed If in the inspect mode all the closed crosspoints can be displayed one at a time not simultaneously Refer to paragraph 2 9 13 for inspect mode information Pressing the START STOP button repeatedly to advance through the stored memory locations is an easy way to locate a desired memory location This procedure will go through ail the stored locations up to location 75 or to where a memory location has been cleared Program 94 or to the last stored memory location and then loop back to memory location 01 If memory location 01 was cleared using Program 94 attemp ting to recall the location is not valid and cannot be recalled This is true for all the locations 2 22 2 9 7 Program 6 Pole Configuration Program 6 is used to program the desired number of measurement poles or to select the matrix mode Measurement Poles The Model 706 permits either 1 2 or 4 pole measurements Table 2 18 contains a list of the dif ferent scanner cards and which pole configuration to use with each scanner card Table 2 18 Scanher Card Pole Configuration Scanner Pole C
200. ystem The alarm time is displayed as a 24 hour clock format The display format is as 000000 example of setting the alarm time use the following procedure to program the alarm time for 2 45 pm 1 Press PRGM 7 Selects Program 7 and displays the follow ing message for approximately 0 5 seconds After the alarm message is displayed the 24 hour clock format is displayed If the alarm time was not previously programmed the alarm time is set to all zeroes When the time is set to 00 00 00 no output pulse will appear on the ALARM SERIAL IN connector 2 Press 1 4 4 5 0 0 ENTER Loads 14 45 00 onto the display and when ENTER is pressed the alarm time is set to 2 45 pm The Model 706 then reverts to the channel mode which turns on the CHANNEL LED and shows the previously displayed channel Table 2 20 Matrix Card Number Display Assignment 001 005 051 055 006 010 056 060 011 015 061 065 016 020 066 070 021 025 071 075 026 030 031 035 036 040 041 045 046 050 076 080 081 085 086 090 091 095 096 100 eO 2 24 Slave 1 Slavef4 101 105 151 155 201 205 106 110 156 160 206 210 111 115 161 165 211 215 116 120 166 170 216 220 121 125 171 175 221 225 226 230 231 235 236 240 241 245 246 250 176 180 181 185 186

Download Pdf Manuals

Related Search

Related Contents

About Blood Pressure  CWT F-C1100 - InSinkErator Image Server  CTR-40 Users Guide.vp - GE Measurement & Control  Télécharger  絶縁監視通報装置  GSW-0891 User Manual  Soundmaster DFF-1 digital photo frame  HORSCH Air Till Drill 18.35 ATD  Flex Network 4チャンネル デジタル/アナログ変換ユニット取扱説明書  

Copyright © All rights reserved. Failed to retrieve file