Keithley 3321, Operator'S Manual

Page 1: ...Model 3321LCZ Meter Operator s Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...

Page 2: ...IABLE FOR ANY DIRECT INDIRECT 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 POS...

Page 3: ...Model 3321 LCZ Meter Operator s Manual 01991 Keithley Instruments Inc All rights reserved Cleveland Ohio U S A Second Printing April 2000 Document Number 3321 900 01 Rev B...

Page 4: ...a new Revision is created all Addenda associated with the previous Revision of the manual are incorporated into the new Revision of the manual Each new Revision includes a revised copy of this print h...

Page 5: ...s that a shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit befor...

Page 6: ...nt components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instru ments Standard fuses with applicable national safety approvals may be...

Page 7: ...ak are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Inspect the connecting cables and test leads for possible wear cracks or br...

Page 8: ...MEASUREMENTS 2 2 Operation INTRODUCTION 3 1 FRONT AND REAR PANEL FAMILIARIZATION 3 1 Front Panel 3 2 Rear Panel 3 6 POWER UP PROCEDURE 3 7 Line Voltage Setting 3 7 Fuse Replacement 3 8 Power Cord 3 8...

Page 9: ...Interface Message 4 4 GPIB Programming Example 4 6 GFIB SPECIFICATIONS 4 6 Interface Functions 4 6 Bus Drivers 4 6 Address 4 6 Receive and Transmit Codes 4 7 Delimiters 4 7 Program Codes 4 7 Response...

Page 10: ...r Example 4 4 Figure 4 4 Basic Syntax Program Code 4 7 list of Illustrations Getting Started Model 3321 Test Fixture Connection 2 3 Operation Model 3321 Front Panel 3 2 Model 3321 Rear Panel 3 6 Clean...

Page 11: ...3 6 Error Message 3 2 1 4 GPIB Interface Table 4 1 Multi Line Interface Message 4 5 Table 4 2 Interface Functions 4 6 Table 4 3 Bus Drivers 4 6 Table 4 4 List of Program Codes 4 9 Table 4 5 Response t...

Page 12: ...ns are located in Appendix A Measurement Functions L C IZ I Q D ESR G 8 These functions can be automatically selected Basic Accuracy 0 1 at 1kHz Measurement Ranges Display IZI O lmQ to 19 999Ma C O OO...

Page 13: ...NG heading used in this manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTIO...

Page 14: ...g the line voltage set ting requires a fuse change CAUTION To prevent damage to the instrument that may not be covered by the warranty make sure the rear panel LINE SUPPLY switch is set to the correct...

Page 15: ...e connected to it 3 Install the DUT device under test into the test fix ture The appropriate function for the DUT will be selected and the measurements will be displayed as follows NOTE The exponent s...

Page 16: ...SECTION 2 Getting Started 1 1 3321 LCZ METER I 1 ZERO Jl LEVEL OPEN j J ciauve 2 l Model 3322 Test Fixture Connection 2 3...

Page 17: ...of the instrument This section covers front panel operation For operation over the GPIB bus see Section 4 3 2 FRONT AND REAR PANEL FAMILIARIZATION The front and rear panels of the instrument are show...

Page 18: ...ys indicate the magnitude of the reading using exponent symbols i e k u M etc m DISPLAY Function Indicators These annuncia tors denote the selected function L Self inductance H C Electrostatic capacit...

Page 19: ...IAS ON Key Pressing this key enables the internal 2V bias power sup ply Pressing the key a second time disables the bias sup ply With the rear panel BIAS INT EXT switch set to the EXT position the BIA...

Page 20: ...only Use the IZ I 0 key and ESR key to change the address value and use the G key to toggle the delimiter The displayed address and delimiter values can be en tered by again pressing the GPIB key The...

Page 21: ...e instrument L CUR Current detection terminal L POT Voltage detection terminal Low H POT Voltaie detection terminal High H CUR Drive signal output terminal G Ground terminal that is connected to the c...

Page 22: ...ply 2V and the externally EXT applied bias sup ply up to 35V Fuse Maintenance fuse for the external power supply O lA quick acting type IN Connector BNC connector used to connect the external bias sup...

Page 23: ...Do not use a fuse other than the one specified for the line voltage setting 3 3 POWER UP PROCEDURE 3 3 1 Line Voltage Setting The instrument is designed to operate from 90 l32V or 19 250V line power...

Page 24: ...th a 3 wire power cord that contains a separate ground wire and is designed to be used with grounded out lets When proper connections are made instru ment chassis is connected to the power line ground...

Page 25: ...be saved in one of the ten battery back up memories The setting for all other parameters can be returned to the power down condition by recalling Memory 0 2 The setting for this parameter is stored i...

Page 26: ...he phase angle f3 of the DUT connected at the input Table 3 2 defines the selected function and function parameter that is based on the internally meas ured phase angle e 3 5 1 Measurement Function Se...

Page 27: ...the desired function parameter AUTO off simply press and release the appropriate m DISPLAY key When ESR or G is selected the equivalent series resis tance or parallel conductance is displayed respect...

Page 28: ...Limit and Up 1kHz O OpFto 19 999mF per Limit see Table 3 4 For example for a 1Om meas 1OkHz O OOpFto 1 999mF urement the displayed reading will occur on Range 3 1ookHz O OOOpF to 199 99yF Hysteresis A...

Page 29: ...ation 0 01 180 00 to 179 99O Deviation Range information for deviation is covered in paragraph 3 6 3 Calculating Admittance and Susceptance Admittance Y IY I and Qy and susceptance B are not displayed...

Page 30: ...2M 20M co 1ookHz 1 100 0 5 11 2 100 0 9 5 2k 11 k 3 lk 980 2k 20 k 110 k 4 10 k 9 8 k 20 k 200 k 1 1 M 5 10 k 90 k 200 k 2M 00 6 10 k 90 k 200 k 2M Co 50mV 120Hz 1 100 0 5 11 1kHz 2 100 0 9 5 2k 11 k...

Page 31: ...itance changes in semiconductor junctions due to applied voltage to be measured The instrument has a built in 2V bias that can be used or an external bias voltage from 0 to 35V can be applied via a BN...

Page 32: ...ocedures OPEN Stray Admittance Measurement Perform the following steps to perform the OPEN cor rection procedure 1 Open the measurement terminals as shown in Figure 3 7 2 Press the OPEN key The instru...

Page 33: ...3 10 MEASUREMENT CABLES 3 10 1 Cable Requirements When using the cables maintain the four terminal con figuration all way to the deviceunder test Use the coaxial cables and twist them as illustrated...

Page 34: ...ce series R ss L ss Ym R ss Residual resistance L ss Residual inductance Y pp Stray admittance parallel G pp Stray conductance C pp Stray capacity a Normal measurement mode R ss L ss r c zss b OPEN me...

Page 35: ...SECTION 3 Operation a How to bundle cables Cross sectional view HCUR HPOT LCUR LPOT b Model 3324 c Model 3325 ciguve 3 20 Test Cables 3 19...

Page 36: ...onstants n 4 7 RAM error n 9 ROM error The error messages caused by improper operation that are displayed by the instrument are listed and explained in Table 3 6 It is ossible to get the following mes...

Page 37: ...At the factory the GPIB address is set to 2 and the delim iter is set for carriage return line feed CR LF The yellow GPIB key is used to check and or change the current address and delimiter for the...

Page 38: ...ivers even though they may have different transfer rates Various names have been applied to the GPIB including IEEE488 bus The official name however is the IEEE Std 488 1978 IEEE Standard Digital Inte...

Page 39: ...l Bus ATN REN IFC SRQ EOI l ATN ATteNtion This line is an output line from the controller which indicates whether the signals on the DIO bus are data signals or commands l REN Remote ENable This outpu...

Page 40: ...dshake I Indicates that all listeners have completed data processing and is waiting for next data Figure 4 2 Handshake Timing Diagram 4 1 4 Data Transfer Example Whenever the talker address of another...

Page 41: ...roller Functions l Outputs IFC and REN signals l Sets the ATN signal low to control the listener and talker and transmission of commands such as device clear l Only one controller can be active on GPI...

Page 42: ...LISTENER ADDRESSES ASSIGNED TO DEVICES c f LISTENER ADDRESSES ASSIGNED TO DEVICES ifi D TALKERADDRESSES 5 ASSIGNED TO DEVICES 0 I N X C W J o...

Page 43: ...o start measurements FR lE3 Frequency 1kHz LVl Level 1V DA2 DISP A C DBl DISP B D CKl Series equivalent circuit TG Apply trigger 140 Reads data 150 Prints header 160 Prints data 4 3 GPIB SPECIFICATION...

Page 44: ...of a delimiter of the transmit data 4 3 6 Program Codes The instruction used to control the instrument over the GPIB or to read the setting or measured data is called a program code The program code...

Page 45: ...umber of significant dig its is too large it is rounded to the specified resolution Standard format l NRl Integer representation format Example 99 056 1234 24 l NR2 Floating point representation forma...

Page 46: ...y Message Output Format Header Header Parameter DA 1 to 6 El 4 AUTO L DB Iiiil 0 to 4 3 X CK I 2 WU O IEl 3 4 AUTO DT DT nl n2 DISPLAY A B FREQUENCY I 12O lE 3 10E 3 FR 12O lE 3 lOOE 3 l lOE 3 100E 3...

Page 47: ...nvalid in the local mode the DCL and SDC commands are valid in the local mode 3 The SDC GTL and GET commands are in the ad dress command group see Table 4 l Thus they are valid only when the instrumen...

Page 48: ...__ ______ __ _ 7 Always zero MSB 6 RQS When issuing the SRQ command When receiving the device clear command After reading the status byte 5 ERR Zero correction error When receiving the device clear co...

Page 49: ...ap proximately three seconds the current GPIB address and delimiter will be displayed on them DISPLAY The address and delimiter values are separated by the decimal point Valid address values are 0 to...

Page 50: ...th exponent part 15 75E 03 etc When this format is used the exponent becomes a multiple of 3 in the range of E 12 lo to E 06 106 which is consistent with the how the front panel dis play handles expon...

Page 51: ...0Hz lE3 1kHz lOE3 1OkHz lOOE3 100kHz Yes LEVEL LV NRl Integer Measuring signal level Range 0 50mVrms 1 1Vrms Open Yes BIAS ON OFF BO NRl Integer Bias Yes Range O Off l On MAN TRIG TG Manual Trigger Es...

Page 52: ...A Function Yes Type NRl Integer Range l L 2 c 3 IZI 4 AUTOL 5 AUT OC 6 AUTO IZI No of letters 2 4 DB Function Parameter Yes Type NRl Integer Range O Q l D 2 ESR 3 G 4 0 No of letters 2 4 CK Equivalent...

Page 53: ...g signal level Type NRl Integer Range 0 50mVrms 1 1Vrms No of letters 2 4 BIAS ON OFF BO BO Bias Yes Type NRl Integer Range 0 Off l On No of letters 2 4 HEADER HD HD Header output Yes Type NRl Integer...

Page 54: ...Format Type Data that correspond to the m DISPLAY and the m DISPLAY readings are separated delimited by a comma 0 HEADER Data of m DISPLAY Data of m DISPLAY Delimiter The header output is enabled and...

Page 55: ...RQ will disable and the header for an inquiry message will disable 4 6 2 Measurement and Reading of Data This paragraphs describes how to make a measurement and send the reading data over the GPIB bus...

Page 56: ...bus Table 4 10 GPIB Error Messages Err12 The entered parameter value exceeds the rated range Err13 Display assi nment error While r A DISPLAY in AUTO an item of m DISPLAY is assigned CKT is assigned...

Page 57: ...s other wise programmed by the OUTPUT statement 4 9 2 Display Setting The following example program will set the display of the instrument When this program is executed C and D will be measured repeat...

Page 58: ...s starting from line 200 Enable SRQ of the instrument Applies the remote trigger to make meas urement Admits the SRQ interruption Performs the serial poll Confirms that the RQS bit of a status byte is...

Page 59: ...gger mode trigger delay time 1s Turns on the DC bias and allow capacitor time to charge 200 210 220 to 340 220 330 230 240 to 280 290 300 310 to 320 350 to 380 400 to 420 Frequency table Assigns a fre...

Page 60: ...99kH Q D 0 0001 to 19999 G O OOlpS to 199 995 8 180 00 to 179 99O These ranges are dependent on the frequency measuring range and phase angle of impedance Accuracy Accuracy Guarantee Conditions l Warm...

Page 61: ...dd each corresponding value in Table A 4 to accl and acc2 in advance l When level 50mV rms accuracy is not guaranteed in the following ranges IZI 20Ma IZ I 2 2Mn and frequency 1OOkHz IZI 0 2a Accuracy...

Page 62: ...14 101 IZ I 2k 1 0 13 10 1 10 13 10 7 1 0 20 10 15 1 0 23 0 45O 0 25 0 5 2 0 1 1 0 6 0 9 0 2SlZ l O 5 1 4 0 8 1 25 5 5 3 7 2 0 2 9 100k IZ I Accuracy f reading shown on upper line 8 Accuracy degrees...

Page 63: ...M IZ I 20M in Table A l x IZ I 20M Q Table A 4 Additional Error for 5 40 C IZI 1 LEVEL lVrms 1 LEVEL 50mVrms R Frequency Hz I Frequency HZ 120 to 1 look 120 to 1 1OOk 10 024 1 0 06 1 0 12 0 6 l lZl 2...

Page 64: ...Frequency f HZ C L IZ I Figure A l Conversion Diagram from L or C to I Z I...

Page 65: ...8 max min Measured value 8 Accuracy 8 degree 4 Find the maximums and minimums of the parameters for the four sets of combinations of maximums and minimums of IZ I and 8 using the calculating equation...

Page 66: ...n and memory operation can be performed Readout All the settable parameters measurement data and status Standards Based on IEEE 488 1978 and IEEE 488A 1980 Code IS0 7 bit code ASCII code A 9 GENERAL P...

Page 67: ...III Figure A 2 Dimensions...

Page 68: ...Overload 0 Unable to zero I Will not read applied input a Calibration only m Data required 3 Certificate of calibration required attach any additional sheets as necessary Show a block diagram of your...

Page 69: ...se 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax 0118 929 7519 INDIA Flat 2B Willocrissa 14 Rest Hous...