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1、Model 263 Calibrator/Source Quick Reference Guide RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 INTRODUCTION This quick reference guide contalne descriptions of parlous features and Information concerning the operation of the Model 283. Also included are programming examples using VBrlous COntr011
2、wa. Q1997, Keithley Instruments. Inc. Instruments Division Cleveland. Ohio, U.S.A. Document Number: 283-903-01 Rev. A RadioFans.CN 收音机爱 好者资料库 TABLE OF CONTENTS SAFETY PRECAUTlONS 3 FRONT PANEL OPERAflON 4 : j CONNECTORS IRear Panell. 9 PROGRAMMING OUTPUT VALUES 10 i i SOURCING METHODS 11 ; GUARD 13
3、I FRONT PANEL PROGRAMS. 16 i IEEE-488 PROGRAMMING. 17 PROGRAMS 23 IBM PC or AT ICEC PC 488 Interface1 24 IBM PC or AT ,National GPIS PC Interface,. 26 APPLE II 28 HP85. 30 HPSERlES300and.9816 ,., 32 ; j I HP9925A. 34 : DECLSIll ,.,.,o,., 36 i ,! _ SAFETY PRECAUTIONS 1. Before operation, ground the i
4、nstrument through a prop- erly earth grounded power receptacle. 2. Before sevlcing, disconnect the instrument from the power line and all other equipment, and consult the Model 263 InstructIon Manual. 3. Do not touch any terminals while the Instrument Is oon- nectsd to any other test equipment. 3 I
5、FRONT PANEL OPERATION POWER-Controls AC line power to the instrument. i ; I I 1 , SHIFT-Several controls have secondary functions that are selected by first pressing SHIFT and then pressing the ap- 1 : propdate button. : I FUNCTION GROUP FUNCTION OHM9 o= VOLTS EX OmH AMPS f=-l OYA V/R m OB- OHMS-Pre
6、ssing the OHMS button configures the Model 263 as a resistance source. The value of the reslstanoe will be displayed. VOLTS-Pressing the VOLTS button conflgures the Model 263 88 a voltage 80” The voltage VBIUB will be displsyed. Pressing SHIFT VOLTS configures the Model 263 to output an external wur
7、ce applied to the EXT INPUT and COMMON terminals on the rear panel. The EXT indicator turns on and the message “USE, V” 18 displayed. AMPS-Pressing the AMPS button configures the Model : 263 as an active current source. The programmed current value will be dlsplayed. Pressing SHIFT AMPS turns on the
8、 V/R light indicating that the Model 263 is configured as a passive current aouroe. I COUL-Pressing the COUL button conflgures the Model 263 8s an active charge 8ouroe. The currently selected : range and programmed charge value will be displayed. Pressing SHIFT COUL turns on the VIR light indicating
9、 that the Model 263 is configured as a passive charge source. CONTROLGROUP 6 RANGE-These two buttons are used to swleot the range of the selected function. RANGE A upranges the Instru- ment and RANGE V downranges. CURSOR-These two buttons are used to position the our- sot when using the Adjust Metho
10、d to modify an output valuw. CURSOR C moves the cursor from left to right and conversely, CURSOR 4 moves the cursor from right to left. Not functional In OHMS. Pressing SHIFT ON/OFF the first time displays the flashing cursor continually. Pressing It again disables the cursor. Not functional in OHMS
11、. ADJUST-These two buttons aro used to modify the display reading using the Adjust Method. ADJUST A increments the reading at the seleotnd dlglt and ADJUST T decrements the reading. Not funotional in OHMS. KEYPAD/ENTER-Pressing this button enables the keypad allowing an output value to be keyed in u
12、sing the number 10 through 91 buttons and the + button IKeypad Method). Pressing this button *gain enters the resdlng and disables the keypad. Not functional in OHMS. SHIFT CANCEL-Pressing this button after keying in B reading (Keypad Method) canoels that reading and disables the keypad. +/- Toggles
13、 the displayed reading (except OHMS1 bet- wsen posltlve (t) and negative l-l polarity. Not functional in OHMS. ZERO-Toggles the display between zero and the previously displayed reading. SHIFT GUARD-Toggles the output configuration between guarded and unguarded. 7 MENU-Used to Sslsot front panel pro
14、gram put value. In general, use the Adjust Method to modify B value and the Kevpad Method to enter a completelv new v.aIuB. , I I Adjust Method I 1. Position Cursor. Using CURSOR 4 and CURSOR C, place the cursor on the digit to be changed. To continuallv : display the cursor location, press SHIFT ON
15、/OFF. 2.Adjust Display Reading. Use thB ADJUST A and ADJUST v to increment or decrement the reading. Polarity of the reading is toggled by the +/- button. Keypad Method 1. Enable Keypad. Enable the keypad by pressing KEYPAD/ ENTER. Keypad LED turns on. 2.Key In Reading. Key in the reading by pressin
16、g the BP- - propriate number button (0 through 91 at each oursor location. Polarity is toggled by the +/- button. Note: If it is desired to cancel the keyed in reading and return to the previously programmed value, press SHIFT : CANCEL. The keypad will disable. 3.Enter Reading. Again press KEYPAD/EN
17、TER to enter the : displayed reading and disable the keeypsd. Keypad LED turns off. 10 SOURCING METHODS Figures 1 through 6 show the basic methods that the Model 263 ums to source resistance, voltage, current and charge. MODEL 263 _ _ _ _ _ _ - - _ _ _ - - - - - 1 Flgure 1. Ohms Source Flgum 2. Volt
18、s Source 11 Flgum 3. External Source MODEL 263 r_-_-_-_ l-=-t- L- _-_ -, Flgure 4. AMPS V/A and COUL V/A Flgum 5. Amps and Coul Source 12 .j j ! , GUARD In the normal unguarded output coniguratlan, o”tp”t high is connected to the center conductor of the triax OUTPUT connector and outp,” low is conne
19、cted to the Inner shield Isee Figure 8). When the o”tput of the Mods1 203 18 plac- ed I” the guarded conflguration, by pressing SHIFT GUARD, output low Is disconnected from the inner shield of the OUT. PUT connector ellowlng a guard drive to be connected to it. In AMPS and COUL the guard drive is pr
20、ovided by the Model 283. On the other functions (AMPS V/R, COUL V/R, OHMS and VOLTS), the inner shield of the triax OUT- PUT connector Is floating unles8 a guard drive is supplied by the user. Figures 7 through 10 show the guarded out- put configurations for all functions. Guarding 18 recommended fo
21、r rslstancw8 2 100Mg. Gusrd- ing is not necessary when the Model 263 is sourcing cur- rent to a feedback picoammeter since this oircult is already guarded. The low Input voltage burden of a feedback pico- mmeter results with virtually the some voltage 0” output high and low. Guarding Is recommended
22、when sourcing cur- rent or charge to a high impedance load. Guarding Is un- “CBSSB, when sourcing voltage. 0ulPU-l HI LO 3 COMMON Flgure 6. Normal (Unguarded) Output ConfIguration 13 Flgure 7. Guarded Ohms Output Conflgurstlon OUTPUT :-_HL- r- $t_l It- Flgum 8. Guarded AMPS WA and guarded COUL V/R L
23、 output Co”llguratlo” Flgum S. Gusrdsd Amps and guarded Coul Output Co”flguratlon HI OUTPUT + V. c I.0 Figure 10. Guarded VOLTS OUtput Conflgumtlon 16 FRONT PANEL PROGRAMS The available front panel programs are summarized in Table 1. Perform the following steps to use B program: 1. Display the desir
24、ed program using the MENU button. 2. Use the ADJUST A or ADJUST 7 button to change the program pammeter. 3. To enter the new program paramter, press the MENU but- ton again. The instrument will return to normal operation. Note: The IEEE address fProgram IEEE1 and the display mode IProgram dlSPl are
25、stored in memory. Thus, the : i instrument will power-up to the programmed parameters. Temperature compensation status is not stored and will I always power up enabled Ill. Table 1. Front Panel Programs Check or change IEEE-488 bus address 10 Selects alternate display mode; engineer- ing units lpi o
26、r scientific notation l-61. Check or change temperature compensa- IEEE-488 PROGRAMMING DEVICE-DEPENDENT COMMANDS EKeCUte X Execute other device-dependent commands 17 Ohms Amps vcns CO”, Ladder Auto on Auto on A”,0 0” A”,0 0” fluto cl” 1 k” 2 pA 2OLh” 2opc IML to k” 20 PA 2 v 2oopc m”ll. lock” 200 PA
27、 20 ” 2C ,CCML tfm 2llA 20 ” 20C 1GL lcJM” 20llA 20 v 200C WGL lOOM” 200 nA 20 v 2pc 1OOGL 1G” 2pA 20 ” 2O#C lOOGL IOG” 2OpA 20 ” 20qk IOOGL lOOGO 200 pA 20 V 200,X 1OOGL 1000” 2mA 20 ” ZOO Model 263 from an Apple II computer and displays the in- strument reading string on the computer CRT. The comp
28、uter must be equipped with the Apple II IEEE-466 Interface installed in slot 3. ; i, DIRECTIONS _I 1. Using the front panel program feature. set the primary 1 1 : address of the Model 263 to 6. 2,With the power off, connect the Model 263 to the j ! IEEE-466 interface installed in the Aoole II comput
29、er. 3. Enter the lines in ths program below, range, type in FlASX and press the END LINE key. 6. The instrument reading string will then appear on the in j CRT. 30 PROGRAM COMMENTS Prompt for command. Input command string. Address 283 to listen. send strln Address 2 : 3 to talk, In- put reading., R;
30、isp;y readlng string. 31 HP SERIES 300 and 9818 The following program sends a command string to the Model 263 from a Hewlett-Packard Ssries 300 or Model 9816 computer and displays the inwument reading strina on the computer CRT. The computer mwt be equipped with the HP62937 GPIB Interface and SASICA
31、 4.0. DIRECTIONS 1. Using the front panel program feature, set the primary address of the Model 283 to 8. 2. With the power off, connect the Model 203 to the HPS2937A GPIB interface installed in the computer. 3. Enter the lines In the program below, using the ENTER key after each line. 4. Press the
32、RUN key end type in the desired command string at the command prompt. For example, to place tha instrument in the current function and 200A range, type I” FlA9X and press the ENTER key. 6. The instrument resdlng string will then appew on the CRT. 32 PROGRAM COMMENTS Place 263 I” r*rnct*. Prompt for
33、and Input command. Address 203 to listen, send string. Address 263 tc talk. In- put readlng. Display reading string. Repeat. NOTE: For ccnverslon tc a numeric variable, change the prc- gram as follows: 33 HP 9825A Use the fcllowlngprcgrsm to send a command string to the Model 263 from a Hewlett-Pack
34、ard Model 9826A and display the instrument reading string on the computer printer. The computer must be equipped with the HP99034A HP16 Interface and a 9972A extended I/O ROM. DIRECTIONS 1. From the front panel, set the primary address of the Model 263 to 13. 2.With the power off, connect the Model
35、263 to the 99034A HPIB interface installed in the 992SA. 3.Enter the lines in the program below, using the STORE key after each line Line numbers are automatically assign- ed by the 9926A. 4.Press the 982SA RUN key and type in the desired ccm- msnd string at the command prompt. For example, to place
36、 the Instrument in the current function and ZOOpA range. type in FlR9X and press the CONT key. &The instrument reading string will then appear on the computer print cut. 34 PROGRAM COMMENTS 0 dim AX251 9 LW201 Olmensicn data strings. 1dev”263”,708 De,ne 283 at address 8. 2 rernl1263) Place 263 in re
37、mote. 3 env COMIIAND STRING” I Prompt for command string. Address 263 to lIsten, send 8trlng. .44ry 263 to talk, input Print data strlnp on 7 gtc 3 printer. - Repeat. NOTE: For conversIon to numerlo variable, modify the prc- gram 88 follows: 6 prt val(0051) 36 DEC LSI 11 The following program sends
38、a command string to the : Model 283 from a DEC LSI 11 minicomputer and displays the instrument reading string on the DEC CRT terminal. The LSI 11 must be configured with IBK words of RAM and 8” 1 IBV 11 IEEE-489 interface. The software must be configured with the IB software as well 88 FORTRAN and t
39、he AT 11 i operating system. 1. Using the front panel program feature, set the primary i address of the Model 263 to 8. 2,With the power off, connect the Model 263 to the IBV I 11 IEEE-488 interface cable. 3. Enter the program below, using the editor under FIT 11 i and the name IEEE.FOR. 4.Comcile u
40、sing the FORTRAN ccmeilsr as follows: FOR- TRAN IEEE. - 6.Link with the svstern and IB libraries as follows: LINK IEEE,IBLIB. &Type RUN IEEE and press the RETURN key. 7.The display will read “ENTER ADDRESS”. B.Typs in B and press the RETURN key. 9.The display will read “TEST SETUP: 10. Type in the d
41、esired command string and press the RETURN key. For example, to program the instrument for the current function and 200A range, type in FlRSX and press RETURN. 11. The Instrument data string will appear an the computer i display. 36 PROGRAM COMMENTS DO2I=I,lB CALLIBSTERIIFl) Turn off IE errors. 2 CO
42、NTINUE CALLIBSTER Allow 6 error 16s. C*LLIBTtMct20 Allow 1 second bus dmsc”t. Set line feed as terminator. lbrn on remote. Input primary address. PRIADR) send 8trlng. 18 I=,8REC”IHPlJT,80r Get data from instrument. PRIADR) IHPUTI+L=O CRLLPUTSTR7rINPUTl 6) COLL lBUNT Untslk the 263. GOT0 12 Repeat. END 37
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