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Agilent 4338B Milliohmmeter Operation Manual

1. EXPONENT PART 11 bits LAOE5009 64 bits The real number RN represented in floating point format are provided by following formula When O lt e lt 11111111111 2047 RN 1 x 2 EXP 1028 x 1 1 2523 mw Whene O RN 219 x 21022 x 257 mw Whene 0 f 0 RN 0 Where S value of the sign part binary e value of the exponential part binary EXP decimal expression of the exponential part f decimal expression of the fractional part 5 42 GPIB Reference Application Measurement Introduction This chapter describes typical measurement applications m Measuring Contact Resistance of Relays or Switches m Measuring Internal Resistance of Batteries Application Measurement 6 1 Measuring Contact Resistance of Relays or Switches 4338B Measuring Contact Resistance of Relays or Switches This example shows how to measure contact resistance of relays or switches 1 Connect the 16143B mating adapter to the 4338B then connect the 16005B Kelvin clip leads to the 16143B A 16143B 16005B 2 Select the R only measurement mode A Mode Press to display the mesurement parametor menu Press or until R is blinkin
2. Event Register Logical OR Enable Register Figure 5 5 Standard Operation Status Group Structure GPIB Reference 5 37 Status Reporting Structure 4338B Operation Status Register The Operational Status Register group provides information about the state of the 4338B measurement system Table 5 5 Operation Status Condition Register Assignments Bit No Bit Weight Description 10 15 always 0 9 512 BUF2 is full 8 256 BUF 1 is full 7 128 Correcting The 4338B is currently performing a correction procedure 6 Always 0 5 32 Waiting for Trigger The 4338B is in a waiting for trigger state of the trigger model 4 16 Measuring The 4338B is actively measuring 3 Always 0 2 4 Ranging The 4338B is currently changing its range 1 2 Settling The 4338B is waiting for signals it controls to stabilize enough to begin measurement 0 Always 0 Table 5 6 Operation Status Event Register Assignments Bit No Bit Weight Description 10 15 Always 0 zero 9 512 This bit is set when the BUF2 has become full 8 256 This bit is set when the BUF 1 has become full 7 128 This bit is set when the correction data measurement has completed 6 Always 0 zero 5 32 This bit is set when the 4338B has become able to accept a trigger 4 16 This bit is set when the measurement has compl
3. Shift LD002453 R 12 345mQ X 0 1000m Q LVL AUTO Pri Low Limit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock 2 Enter the value using the numeric keys and press B to enter the value Note When you want to set the limits only for the lower limit or the upper limit or i the limits only for the primary parameter or the secondary parameter set the Y unnecessary parameter to OFF using the setting the minimum value or the setting the maximum value m To start sorting Comp rt r 1 Press m To display the sorting results Press Et The following menu is displayed Shift 0002353 R 12 345mQ X 0 1000m Q LVL AUTO Off Data Comprtr Digit Exit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Cl Only Lock Select Comprtr using or E The display mode is set to the comparator result display mode and the comparison result is displayed Shift LD002304 R IN X IN LVL AUTO AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Chk Only Lock a To stop sorting Comp rt r Press Operating the 4338B 2 7 Making a Me
4. 11004006 Figure 4 2 SRQ generation sequence when measurement finishes Remote Operation 4 11 Waiting For Completion Of Measurement detecting completion of measurement 4338B Sample program Figure 4 3 shows a sample program to detect the completion of measurement using an SRQ This program stops the trigger system sets up SRQ and then starts up the trigger system once When an SRQ of the completion of the measurement occurs it displays a Measurement Complete message and finishes The program is detailed below Line 20 Sets the GPIB address Lines 40 to 60 Stops the trigger system and sets the trigger mode to the internal trigger Lines 80 to 90 Enables bit 4 of the operation status event register and enables bit 7 of the status byte register Lines 100 to 120 Clears the status byte register and operation status event register Lines 140 to 150 Sets the branch destination of the SRQ interrupt and enables the SRQ interrupt Lines 160 to 180 Starts up the trigger system once to start the measurement and waits for the completion of the measurement Line 230 Displays Measurement Complete message 10 DIM Buff 9 20 ASSIGN Agt4338b TO 717 30 40 OUTPUT Agt4338b INIT CONT OFF 50 OUTPUT Agt4338b ABOR 60 OUTPUT Agt4338b TRIG SOUR INT 70 80 OUTPUT Agt4338b STAT OPER ENAB 16 90 OUTPUT Agt4338b SRE 128 100 OUTPUT Agt4338b CLS 110 OUTPUT Agt4338b OPC
5. 140 Character data error This error as well as errors 141 through 148 are generated when analyzing the syntax of a character data element This particular error message is used if the 4338B cannot detect a more specific error 141 Invalid character data Either the character data element contains an invalid character or the particular element received is not valid for the header 144 Character data too long The character data element contains more than twelve characters see IEEE 488 2 7 7 1 4 148 Character data not allowed A legal character data element was encountered that s prohibited by the 4338B 150 String data error This error as well as errors 151 and 158 are generated when analyzing the syntax of a string data element This particular error message is used if the 4338B cannot detect a more specific error 151 Invalid string data A string data element was expected but was invalid for some reason see IEEE 488 2 7 7 5 2 for example an END message was received before the terminal quote character 158 String data not allowed A string data element was encountered but was not allowed by the 4338B at this point in the syntax analysis process Messages 4 4338B Overload Over Voltage No Contact Operations 160 Block data error This error as well as errors 161 and 168 are generated when analyzing the syntax of a block data element This particular error message is used if the 433
6. Measurement Settings Meas Time Trigger Range Level On Chk Only Lock Last entered 4 is erased Getting Started 1 17 Connecting a Test Fixture 4338B N To Perform a Measurement The following procedure is commonly used to perform a measurement using the 4338B Configuration setup Turning on the 4338B Connecting DUT to test fixture Correction Setting parameters Measurement SOR ON This section provides the basic measurement procedure for using the 4338B Follow the instructions and get to know about the 4338B To Connect Test Fixture To Reset 4338B To Perform Short Correction To Select Measurement Parameter To Select Auto Measurement Mode To Select Measurement Range To Set Test Voltage Caution DO NOT apply a de voltage exceeding 42 V to UNKNOWN terminals or input Y circuit of the 4338B will be destroyed Note If you have any problems operating the 4338B see If You Have a Problem in i Chapter 2 1 18 Getting Started 4338B To Reset 4338B Connecting a Test Fixture The following describes the available test fixtures for the 4338B and their connection to the 4338B Note The 16338A Test Lead set is available for the 4338B Other fixtures must NOT i be used with the 4338B even if the UNKNOWN terminals physically match Y a test fixture s connector spacing because the terminals configuration is different Using the 16338A The 16338A test lead s
7. 120 ENTER Agt4338b Buff 130 140 ON INTR 7 GOTO Meas_end 150 ENABLE INTR 7 2 160 OUTPUT Agt4338b INIT 170 PRINT Waiting 180 Meas_wait GOTO Meas wait 190 Meas end OFFINTR 7 200 PRINT Measurement Complete 210 END Figure 4 3 Detecting the completion of measurement using SRQ 4 12 Remote Operation 4338B Reading Out Measured Result Reading Out Measured Result This section describes how to read out the measured result You can read out the measured result in two ways reading out data for each measurement or reading out data of several measurements in batch The three commands shown in the table below can be used to read out the measured data for each measurement Available trigger mode Readout procedure Using the TRG command GPIB trigger Bus Executing TRG l Readout Using the FETC command All Triggering the instrument l Executing FETC l Readout When you want to read out the data of several measurements in batch use the data buffer Note i command Y The TRIGGER command of HT BASIC has the same function as the TRG Remote Operation 4 13 Reading Out Measured Result 4338B Reading out measured result using TRG command This command actually performs two tasks it triggers the instrument and returns the results It is useful for example when you want to retrieve measurement results immediately after
8. ENABLE INTR 7 2 PRINT Waiting for External Trigger Meas_wait GOTO Meas_wait Meas_end OFF INTR 7 OUTPUT Agt4338b FETC IF Comp_flag 1 THEN ENTER Agt4338b Meas_stat Pri_para Sec_para Comp1 Comp2 ELSE ENTER Agt4338b Meas_stat Pri_para Sec_para END IF Display results PRINT USING 15A X D Meas status Meas stat PRINT USING 15A X SD 5DE Pri parameter Pri para PRINT USING 15A X SD 5DE Sec parameter Sec para IF Comp flag 1 THEN PRINT USING 15A X K Primary Comparator Compf PRINT USING 15A X K Secondary Comparator Comp2 ELSE PRINT USING 19A Comparator OFF END IF END Figure 4 6 Reading out the measured result in ASCII transfer format using the FETC command Remote Operation 4 19 Reading Out Measured Result 4338B The program of Figure 4 7 is detailed below Lines 50 to 60 Line 70 Lines 90 to 100 Lines 120 to 130 Lines 170 to 210 Lines 250 to 260 Lines 270 to 280 Sets the GPIB address Sets the data transfer format to the binary format Turns ON the trigger system continuous startup and sets the trigger mode to the external trigger Reads out the ON OFF state of the comparator function and assigns it to the Comp_flag variable Makes the setup generate an SRQ when measurement finishes and clears the status byte register and operation status event register Sets the branch destination of the SRQ interrupt and enables the
9. REAR38B 1 GPIB Interface is used to control the 4338B from an external controller by using the GPIB bus ao cn power source 6 Power Cord Receptacle 7 LINE Fuse Holder 1 8 Getting Started EXT TRIGGER Terminal is used to input an external trigger signal HANDLER Interface is used to synchronize timing with an external handler Serial Number Plate gives the instrument s manufacturing information Line Voltage Selector used to set the 4338B s line voltage setting to the voltage of the ac H ANA Max 4338B Overview Incoming Inspection Warning To avoid hazardous electrical shock do not turn on the 4338B when there b are signs of shipping damage to any portion of the outer enclosure for example covers panel or display Inspect the shipping container for damage If the shipping container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the 4338B has been checked mechanically and electrically The contents of the shipment are as follows m 4338B LCR Meter a Power Cable Operation Manual This Book m User s Guide If the contents are incomplete if there is mechanical damage or defect or if the analyzer does not pass the power on selftests notify the nearest Agilent Technologies office If the shipping container is damaged or the cushioning material shows signs of unusual stress
10. CALCulate 1 2 LIMit LOWer STATe ON OFF 1 0 Sets or queries if the lower limit of selected channel is enabled CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter ON 1 enables the lower limit OFF O disables the lower limit Query response is 1 0 CALCulate 1 2 LIMit STATe ON OFF 1 0 Sets or queries if the comparator function is enabled CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter ON 1 enables the upper limit OFF O disables the upper limit Query response is 1 0 CALCulate 1 2 LIMit UPPer DATA lt numeric_value gt Sets or queries the upper limit value of the selected parameter CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter lt numeric_value gt is numeric 9 999x 10 to 9 999x 1014 MAX imum 9 999x 1014 MINimum 9 999x 1014 CALCulate 1 2 LIMit UPPer STATe ON OFF 1 0 Sets or queries if the upper limit of the selected parameter is enabled CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter ON 1 sets the comparator function ON OFF O sets the comparator function OFF Query response is 1 0 CALCulate 1 2 MATH EXPRession CATalog Returns available parameters which are used with CALCulate 1 2 MATH EXPRession NAME command query only For more information see CALCulate 1 2 MATH EXPRession NAME c
11. Event Detection State SOURce DELay IMMediate INTernal ExTernal qualified event detection Buse 4 MANUaI wait DELay TRIGger MMediate CBOESOTZ Figure 5 7 Inside an Event Detection State The TRIGger SOURce command specifies which particular input can generate the event required to continue the downward trigger path If the source chosen is a non analog signal such as BUS then no further qualifications are required to generate an event However if an INTernal or EXTernal analog signal is chosen additional qualifications may apply The TRIGger DELay command allows you to specify a time delay after the trigger signal is detected to the start of the measurement For example you may want to delay acquiring data until 5 milliseconds after the positive edge to allow the measurement signal to settle For example using a delay time allows relay contacts to stop bouncing before making a measurement Sending RST sets DELay to zero The TRIGger IMMeditate command bypasses event detection DELay qualifications one time The upward path through the event detection state contains only one condition If the condition is satisfied the trigger system exits upward Sequence Operation State The downward entrance to the sequence operation state forces the 4338B to start a measurement An upward exit is not allowed until the measurement is complete 5 40 GPIB Reference 4338B
12. STATus OPERation CONDition 2 ee STATus OPERation ENABle lt numeric value gt o o STATUS PRES 2 a a a STATus QUEStionable EVENt o aaa a STATus QUEStionable CONDition aooaa a 2 22824 STATus QUEStionable ENABle lt numeric value gt o 0 SYSTem Subsystem 2 1 1 a SYSTem BEEPer MMediate 2 2 a a SYSTem BEEPer STATe ON OFF 1 O0 2 1 i 1 1 i 1 i 1 i 1 1 1 i 1 1 eo e Rr pl pl A ce pl Ad H a pa pp ps 00 00 00 090 0 O O NOAH ao 0 0 DN DN PRN Sooo Y NN NN NDNDNDNrR ARA OV OV OV OV OV OV OV OV OV OV OV GV OV OV A OV OV OV OV A A OV TV VV A A OV GV OU OU GV OV ON DO DN INN IN INI BB Co LO 0 W NASA N OS a NN NN ND NDNNNNN SOONNTNIASHSSAAA aaa Aon aa y 5 28 Contents 5 SYSTem KLOCKk ON OFF 1 O 2 2 0 2 2 02 2 08 SYSTem LFRequency lt numeric value gt o SYSTem PRESet 2 a TRIGger Subsystem 2 1 A TRIGger SEQuencel1 TRIGger SEQuencel IMMediatel 0002 2 0004 TRIGger SEQuencel SOURce BUS EXTernal INTernal MANual TRIGger SEQuence2 DELay lt numeric_value gt MS S DELay lt numeric_value gt MSIS Common Commands 2 2 2 a L RCL lt numeric_value gt 6 ooa a L RST 4S AV lt numeric_value gt 26 6 A SRE lt numeric_value gt 0 0 6 a Status Reporting Structure 2 a a a a Service Reques
13. Set the comparator lower limit to OFF and the upper limit to 10 mQ and enables the comparator function Clears the LCD display Sets the trigger source to the External Sets the data transfer format to the 64 bit real transfer format Set the size of the data buffer BUF 1 to 200 set to feed the R measurement data which was specified by CALC1 FORM command and feed data into the data buffer whenever the new data available Enables the BUF 1 full bit of the operation status register and the operation status register summary bit of the status byte register Sets the trigger system as being continuously initiated Triggers the measurement from the external trigger source Wait until the data buffer is full Returns the data held in the data buffer Retrieve the 64 bit real transfer format data Line 500 gets the header lines 510 to 530 gets the measurement data and line 540 gets the terminator Print the measurement data Caution Do not connect batteries whose voltage is more than 42 V or the 4338B will Y be damaged Application Measurement 6 7 Measurement Basics Introduction This chapter provides information that will help you work more effectively SHORT Correction The SHORT correction function reduces the measurement error due to the residual impedance existing between the 4338B s UNKNOWN terminals and the DUT Test Fixture Residuals Residual Stray Impedance Zs Admittance Yo oT o
14. aaa DATA DATA BUF1 BUF2 2 2 2 a DATA FEED BUF1 BUF2 lt data handle gt 2 2 DATA FEED CONTrol BUF1 BUF2 ALWays NEVer DATA POINts BUF1 BUF2 lt nuwmeric_value gt 0 ee DISPlay Subsystem 2 2 1 we a FETCh Query 2 2 2 a FETCh 2 6 a FORMat Subsystem 2 ww we FORMat DATA ASCii REAL 64 2 2 ee INITiate Subsystem 2 we sINITiate IMMediate 2 1 2 1 a a INITiate CONTinuous ON OFF 1 0 0 48 SENSe Subsystem 2 ww a a SENSe AVERage COUNT lt numeric value gt o SENSe AVERage STATe ON OFF 1 0 28 SENSe CORRection COLLect ACQuire STANdard2 2 2 SENSe CORRection COLLect METHod REFLI 0 222 SENSe CORRection DATA STANdard2 284 SENSe CORRection STATe ON OFF 1 Q 2 2 SENSe FIMPedance APERture lt numeric value gt MS S SENSe FIMPedance CONTact VERify ON OFF 1 O 2 0 2 SENSe FIMPedance RANGe AUTO ON OFF 1 O SENSe FIMPedance RANGe UPPer lt numeric_value gt MOHM OHM KOHM SENSe FUNCtion lt sensor funciion gt o o SOURce Subsystem ww 1 a a SOURce CURRent LEVel MMediate AMPLitude lt numeric_value gt UA MA SOURce CURRent LEVel MMediate AMPLitude AUTO ON OFF 1 0 STATus Subsystem o a a NSe
15. always O zero 0 1 Operation Complete Bit This bit is set when the 4338B has completed all selected pending operations before sending the OPC command 5 36 GPIB Reference 4338B Status Reporting Structure Standard Operation Status Group The 4338B provides two standard operation status groups operation status register group and questionable status register group which can be accessed using the STATus subsystem commands Refer to STATus subsystem in GPIB Commands If you are a beginner you will rarely need to use this group The individual bit assignments of these registers are given Operation Status Register and Questionable Status Register later in this section Each group includes a condition register an event register and an enable resister Ilustrated in Figure 5 5 The condition register reflects the internal states of 4338B So each time the 4338B s condition is changed its condition bit is changed from 0 to 1 or from 1 to 0 The event register s bits correspond to the bits in the condition register The transition filter reports to the event register that an event a bit changed from 1 to 0 has taken place in the condition register The enable register enables the corresponding bit in the event register to set the status summary bit bit 7 or bit 3 of the status byte Condition Register Transition Filter
16. 0 AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock 3 Press B to recall Operating the 4338B 2 5 Making a Measurement 4338B Making a Measurement To Trigger a Measurement The 4338B has four trigger source modes Internal Manual External or Bus The Trigger annunciator shows which trigger source is selected Note The bus trigger mode can be set by GPIB commands only When the bus trigger i mode is selected none of the Trigger annunciators are ON Y a To Trigger Internally 1 Press until the Int trigger annunciator v is ON a To Trigger Manually 1 Press until the Man trigger annunciator v is ON 2 Press when you want to trigger a measurement a To Trigger Externally 1 Connect the external trigger source to the EXT TRIGGER terminal on the 4338B s rear panel 2 Press until the Ext trigger annunciator v is ON 3 Apply a trigger signal to trigger the 4338B 2 6 Operating the 4338B 4338B Making a Measurement To Use the Comparator Function The comparator function can be used to sort DUTs based on their parameter values The Comprtr On annunciator v tells whether the comparator function is set to ON or OFF m To set the limit values Sec High 1 Select the parameter to be set by pressing or for the primary parameter and Sec High Sec Low E E o E E for the secondary parameter
17. 1 Time interval from a trigger command to EOM end of measurement signal output at the handler interface port E ranging hold display mode off General Information 8 7 4338B At the lowest measurement range for each test current setting each measurement time increases by sixteen times as shown below Mode Analog Digital Total Measurement Computation Short 432 ms 112 ms 544 ms Medium 1008 ms 112 ms 1120 ms Long 14240 ms 160 ms 14400 ms 1 Time interval from a trigger command to EOM end of measurement signal output at the handler interface port ranging hold display mode off 8 8 General Information Maintenance Introduction This chapter provides information on how to maintain the 4338B 4338B maintenance consists of performance tests and functional tests Test Equipment Table 9 1 lists the recommended equipment for performing 4338B maintenance Table 9 1 Required Equipment Equipment Requirements Recommended Qty Use Model Frequency Counter Frequency 1 kHz 5334B 1 P Accuracy lt 0 025 RMS Voltmeter Frequency 1 kHz 3458A 1 E Voltage Range 5 mV to 110 mV Accuracy lt 2 5 1 m Standard Resistor No Substitute 42031A 1 P 10 m2 Standard Resistor No Substitute 42032A 1 P 100 mQ Standard Resistor No Substitute 42033A 1 P 1 Q Standard Resistor No Substitute 42034A 1 P 10 Q Standard Resistor No Substitute 42035A 1 P 100 Standard Resisto
18. 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 Reading Out Measured Result DIM Buff 9 Digit 1 Read form 9 Num of byteS 9 REAL Pri para Sec para REAL Meas stat Comp1 Comp2 INTEGER Comp flag ASSIGN Binary TO 717 FORMAT OFF ASSIGN Agt4338b TO 717 OUTPUT Agt4338b FORM REAL OUTPUT Agt4338b INITICONT ON OUTPUT Agt4338b TRIG SOUR EXT OUTPUT Agt4338b CALC LIM STAT ENTER Agt4338b Comp_flag SRQ setting OUTPUT Agt4338b STAT OPER ENAB 16 OUTPUT Agt4338b SRE 128 OUTPUT Agt4338b CLS OUTPUT Agt4338b OPC ENTER Agt4338b Buff Triggering and data read ON INTR 7 GOTO Meas_end ENABLE INTR 7 2 PRINT Waiting for External Trigger Meas_wait GOTO Meas_wait Meas end OFF INTR 7 OUTPUT Agt4338b FETC ENTER Agt4338b USING A Buff ENTER Agt4338b USING A Digit Read_form amp Digit amp A ENTER Agt4338b USING Read_form Num_of_byte IF Comp_flag 1 THEN ENTER Binary Meas_stat Pri_para Sec_para Comp1 Comp2 ELSE ENTER Binary Meas_stat Pri_para Sec_para END IF ENTER Agt4338b USING A Buff Display results PRINT USING 15A X D Meas status Meas stat PRINT USING 15A X SD 5DE Pri parameter Pri para PRINT USING 15A X SD 5DE Sec parameter Sec para IF Comp flag 1 THEN
19. 9 E 2000 04 E 3900 04 Fun 2000 4 4 m m m 10 0 4 km 2000 0 4 Rm 2000 0 4 Em 2000 1 0 85 10 001 0 85 1701 0 85 2 501 0 44 150 0 44 050 0 44 1 00 0 85 50 001 0 44 0 401 0 4 4 018 0 44 0 281 1 0 4 8 001 E m m m a 0 4 188 Em 0 85 1 00 0 85 0171 0 85 035 0 4 0151 0 4 0 051 0 4 0101 0 85 2001 04 o oor 04 o oota 04 gt 036 100 L 0 4 o Rat L Rm Rm Rm m A 0 4 4 ores i Rm 0 85 0 101 0 85 0 018 cao obi ca ond 0 85 20 0 44 ofits 0 44 0 0033 L 4 0 4 0 061 L Rm Rm 10m Rm 0 4 0 016 Rm 0 85 0051 0 85 9211 0 4 2 005 0 4 20025 Rm Rm 0 0025 0 0014 0 4 pe 0 4 gt Im 0 051 12 5 124 0 005 53 0 006 1 2 29 12 Gm E J 0 0014 1 2 4 9 00115 Rm 10 y 1 Rm Resistance Value Q 2 Accuracy in the table represent Short mode Medium mode Long mode 8 4 General Information 4338B Specifications Measurement Support Functions Correction Function Zero Short Eliminates measurement errors due to parasitic impedance in the test fixtures Display A 40 digit x 2 line LCD display Capable of displaying Measured values 5 digits maximum comparator contact check decisions comparator limits control settings self test messages and annunciators The displaying can be disabled Mathematical Functions The deviation and the percent deviation of measurement values from a programmable reference value Comparator Function
20. CORRection STATe SENSe 5 23 Index 1 D DATA 5 16 data buffer 4 22 5 15 DATA DATA 4 8 5 15 DATAL DATA 4 22 5 16 DATA FEED 4 22 5 16 DATA FEED CONTrol1 4 22 5 17 lt data_handle gt 5 6 5 16 DATA POINts 4 22 5 17 DATA subsystem 5 15 DELay TRIGger SEQuence1 5 30 Delay key 3 7 delay time 3 7 GPIB command 5 30 how to set 2 2 4 7 deviation measurement 3 5 GPIB command 5 15 how to display 2 8 4 8 Device Dependent Error Bit 5 36 display digits how to select 2 10 display mode 2 10 3 6 GPIB command 5 18 DISPlay subsystem 5 18 Disp Mode key 3 6 dry circuit 7 2 E ENABle STATus OPERation 5 26 STATus QUEStionable 5 27 Eng key 3 10 Enter key 3 9 ERRor SYSTem 5 28 ESE 4 23 5 31 ESE 5 31 ESR 4 23 5 31 Execution Error Bit 5 36 External Trigger 3 14 external trigger mode 2 6 3 7 F FEED DATA 5 16 FEED CONTrol DATA 5 17 FETCh 4 10 5 19 FIMPedance APERture SENSe 5 23 FIMPedance CONTact VERify SENSe 5 24 FIMPedance RANGe UPPer SENSe 5 24 Index 2 FORMat 5 20 CALCulate 1 2 5 11 FORMat subsystem 5 20 FUNCtion SENSe 5 24 functional test record 9 16 G GET 4 10 GPIB address 3 8 how to set 2 12 group execution trigger 4 10 H handler interface installation B 1 handler interface functional test 9 14 I idle state 5 39 IDN 5 31 IEEE 754 floating point format 5 42 IMPedance RANGe
21. E ie mot apply a de voltage exceeding HAL CATI E el a E J EE HO CE 3 J E ES E DJ 19 3 4 5 6 7 8 9 10 Keys in this block are assigned numbers in next page Display displays the measurement result instrument states and messages For more information see Display LINE Switch turns the 4338B ON and OFF Chassis Terminal is connected to the instrument s chassis UNKNOWN Terminals are the test ports for test fixtures and test leads Connector type is BNC Auto Measurement Key enables or disables the Auto measurement function Auto Measurement Indicator turns ON when Auto Measurement is enabled and OFF when disabled Measurement Parameter Key sets measurement parameter to be displayed Shift Deviation Mode Key enables the deviation measurement function Show Setting Key changes the mode of Measurement Settings display Shift Display Mode Key selects the display mode Auto Hold Range Key selects the Auto or Hold range mode Shift Range Setup Key toggles the measurement range mode between Auto and Hold Left Down Arrow Key and Right Up Arrow Key increases or decreases setting value Measurement Time Key selects the measurement time from Short Medium or Long Averaging Key sets the averaging rate used to average the measurement result Level Key selects the source output level 14 Getting Started 4338B Overview 14 Trigger Mode Key sele
22. HIGH IN LOW for each of the primary measurement parameter and the secondary measurement parameter Contact Check Function Detects contact failure between the test fixture and device to assume test integrity Superimposed DC Up to 42 V can be present on the measurement terminals Save Recall Ten instrument setups can be saved and recalled from the internal non volatile memory Continuous Memory Capability If the instrument is turned OFF or if a power failure occurs the instrument settings are automatically saved Key Lock Disables key input from the front panel GPIB Interface All control settings measurement values self test results and comparator information Complies with IEEE 488 1 2 The programming language is SCPI Talk only mode available Data buffer can store a maximum of 200 measurements Handler Interface All outputs signals are negative logic optically isolated open collector outputs o Output Signals Include HIGH IN LOW no contact overload index end of measurement and alarm o Input Signals Include Keylock and external trigger General Information 8 5 Specifications General 4338B m Power Requirements 100 120 220 240 V 4 45 VA max 10 47 to 66 Hz m Operating Temperature Humidity and Altitude O to 45 C lt 95 RH O 40 C O to 2000 meters m Storage Temperature Humidity and Altitude 40 to 70 C lt 90 RH O 65 C O to 4572 meters a EMC Complies with C
23. Left Down Arrow Key and Right Up Arrow Key Ej E B A a 3 9 0 1 9 minus point Key fol T 9 E 7 a 5 a e 3 9 Enter Key CL o 3 9 BLUE Shift Key EB Cl o 3 9 Engineering units Key E lt ooa a 310 Back Space Key E PP 3 10 Minimum Key 5 r 3 10 Maximum Key 3 10 Comparator Key E 3 10 Contact Check Key 3 11 Short Key a 4 3 11 Key Lock Key 3 11 Reset Key E 3 12 Configuration Key amp Loe 3 12 Rear Panel e e 3 14 External Trigger 2 a Ce 3 14 AN LINE Fuse Holder Ce 3 15 LINE Voltage Selector Ce e o 3 15 Serial Number Plate Ce Ce o 3 15 Power Cord Receptacle Ce e 3 15 Power Code a a ee ee Ce 3 15 Handler Interface CE 3 16 Specification o A 3 16 GPIB Interface CE 3 18 Theory of Operation Ce A 3 20 Overall Measurement Theory Ce e 3 20 Test Signal Level Ce Ce o 3 22 Actual Signal Level across DUT Ce A 3 22 Limitation of Test Level 3 22 Remote Operation Introduction 2 a a a a 4 1 Getting Started ee A 4 2 Input Output Statements 2 a a 4 2 Reading the GPIB Address e 4 2 Sending a Remote Command 2 ee 4 2 Returning to the Local Mode Ce a 4 3 Query Commands 2 a a a 4 3 Getting Data from the 4338B a a a 4 3 To Control the 4338B from an External Computer 4 4 To Set Up the 4338B a a a 4 5 To Reset the 4
24. SD 5DE Pri parameter Pri para PRINT USING 15A X SD 5DE Sec parameter Sec para IF Comp flag 1 THEN PRINT USING 15A X K Primary Comparator lt Comp1 PRINT USING 15A X K Secondary Comparator Comp2 ELSE PRINT USING 19A Comparator OFF END IF END Figure 4 4 Reading out the measured result in ASCII transfer format by using the TRG command Remote Operation 4 15 Reading Out Measured Result 4338B The program of Figure 4 5 is detailed below Lines 50 to 60 Line 70 Lines 90 to 100 Lines 120 to 130 Lines 170 to 210 Lines 220 to 250 Sets the GPIB address Sets the data transfer format to the binary format Turns ON the trigger system continuous startup and sets the trigger mode to the GPIB trigger Reads out the ON OFF state of the comparator function and assigns it to the Comp_flag variable After the trigger system state transitions to the trigger wait state triggers the instrument Reads out the header part Line 270 If the Comp flag value is 1 the comparator function is ON reads out the measurement status measured primary parameter result measured secondary parameter result and comparator sorting result Note Binary data must be read out without formatting Therefore use an I O path i Binary set up for such readout This is also applicable to Line 290 Y Line 290 Line 310 Lines 350 to 370 Line 390 to 400 Line 420 If the Comp flag val
25. STB m STAT OPER m STAT OPER COND m STAT OPER ENAB m STAT QUES m STAT QUES COND m STAT QUES ENAB m STAT PRES a HP BASIC SPOLL command For example to generate a service request whenever an error is placed in the error queue OUTPUT 717 ESE 52 SRE 32 For example to detect the completion of the actual measurement OUTPUT 717 SYST OPER ENAB 16 Enable Measuring bit OUTPUT 717 SRE 128 Enable Operation Status Register Summary bit REPEAT Wait until Operation Status Register Summary bit A SPOLL 717 ts set UNTIL BIT A 7 Remote Operation 4 23 Other Features 4338B For example to generate an interrupt when an error occurs in the 4338B DIM Err 50 l OUTPUT 717 CLS Clears status byte register OUTPUT 717 xESE 48 Sets Command Error Bit and Execution Error Bil OUTPUT 717 SRE 32 Sets Standard Event Status Register Summary Bit ON INTR 7 GOSUB Err_report Tells where to branch to when interrupted ENABLE INTR 7 2 Enable an interrupt from GPIB interface 1 LOOP END LOOP STOP 1 Err report Stat SPOLL 717 Clears the SRQ bit of the Status Byte OUTPUT 717 ESR Asks contents of the Standard Event Status Register ENTER 717 Estat PRINT Syntax Error detected 1 OUTPUT 717 SYST ERR Asks to output error number and message ENTER 717 Err Err PRINT Err Err 1 ENABLE INTR 7 RETURN END 4 24 Remote Operation 4338B If You Have a Problem If You Have a Problem Ch
26. This chapter provides step by step instructions for controlling the 4338B using GPIB remote mode The examples in this manual use the HP 9000 series 200 or 300 BASIC language This chapter covers the following m Getting started m Setting up the 4338B a Triggering a measurement a Retrieving measurement data a Other features a If you have a problem Refer to Chapter 5 for the description of each GPIB command Note This chapter is not intended to teach BASIC programming language or the i Standard Commands for Programmable Instruments SCPI programming or to Y discuss GPIB theory refer to the following documents which are better suited for these tasks For more information concerning BASIC refer to the manual set for the BASIC version being used BASIC Programming Techniques BASIC Language Reference For more information concerning SCPI refer to the following Beginner s Guide to SCPI For more information concerning GPIB operation refer to the following BASIC Interfacing Techniques Tutorial Description of the General Purpose Interface Bus Condensed Description of the General Purpose Interface Bus Remote Operation 4 1 Getting Started 4338B Getting Started This section will teach you the basics of operating the 4338B in the GPIB remote mode from now just referred to as remote This includes reading the GPIB address sending a command to the 4338B and retrieving data from the 4338B Input Output Statemen
27. and the 4338B displays OVVOL Over Voltage For details see Dry Circuit Loop in Chapter 7 SOURce CURRent LEVel IMMediate AMPLitude AUTO ON OFF 1 0 Sets or queries if the auto level function is enabled ON 1 Auto level is ON OFF O Auto level is OFF Query response is 1 O GPIB Reference 5 25 4338B STATus Subsystem The STATus subsystem commands controls the OPERation and QUEStionable resisters in the status reporting structures See Status Reporting Structure COMMAND PARAMETER STATus OPERation CONDition ENABle lt numeric value gt EVENt PRESet QUEStionable CONDition ENABle lt numeric_value gt EVENt STATus OPERation EVENt Returns the contents of the event register of the standard operation status group Query only Query response is a decimal expression of the contents of the register in lt NR1 gt format Note Reading the event register clears it this is a destructive read 4g STATus OPERation CONDition Returns the contents of the condition register of the standard operation status group Query only Query response is a decimal expression of the contents of the register in lt NR1 gt format Note Reading the condition register is nondestructive the contents of the register i are still contained in the register after the register is read STATus OPERation ENABle lt numeric_value gt Sets the enable register of the
28. is displayed during the SHORT correction the 4338B will display WARNING Improper Correction When the contact check function is ON the values of 9 9999E13 are stored as R and X in the MeasVal At reset the correction data is cleared You cannot enable or disable the correction function without discarding the correction data when using the 4338B s front panel keys but you can by using GPIB commands See SENSe CORRection STATe ON OFF 1 0 in Chapter 5 Key Lock The Key Lock key toggles disabling and enabling key input from the front panel When the key input is disabled the Key Lock annunciator v will be displayed Key Lock Key To cancel the key lock state press this key again Note The key lock state can also be controlled through the handler interface When i the handler key lock function controls the key lock states all the front panel Y keys are locked out including 0 so you can only cancel the key lock out state from the handler Function Reference 3 11 Front Panel 4338B Reset Key The Reset key resets the 4338B to the default state The default states are following Auto measurement ON Auto range and Auto level mode is enabled Source delay Oms Measurement parameter R Deviation measurement OFF Measurement time MEDium Averaging 1 Trigger mode Internal Trigger delay Oms Comparator OFF Display mode Measured data Display digits 5
29. which if not correctly performed or adhered to could result in injury or death to personnel This Caution sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product This Note sigh denotes important information It calls attention to a procedure practice condition or the like which is essential to highlight Affixed to product containing static sensitive devices use anti static handling procedures to prevent electrostatic discharge damage to component 4338B Certification Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by the Institution s calibration facility or to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from the date of shipment except that in the case of certain components listed in General Information of this manual the warranty shall be for the specified period During the warranty period Agilent Technologies will at its option either repai
30. 0 1000m Q P H 100 0m Q L 50 00m 82 Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Chk Only Lock 4 Comparator limits of the secondary parameter Shift LD002158 R 12 345m 9 X 0 1000m amp S H 20 00m Q L 10 00mS2 Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level Chk Only Lock Operating the 4338B 2 11 Making a Measurement 4338B To Lock Out the Front Panel Keys To lockout the keys Key Lock Press 0 To unlock the keys Press 0 again To Select the Local Mode To return the 4338B to the local mode from GPIB remote mode Press ii To Set the GPIB Address Adrs 1 Press Cells Shift 0002307 R 12 345m Q LVL AUTO HP IB Adrs 17 AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger ange Level In Chk Only Lock 2 Enter the desired value then press B to set the value and to exit When you just want to show the current setting just press B To Print Measurement Data To print the measurement data to an GPIB compatible printer without using an external controller 1 Set the printer to listen always mode 2 Connect the GPIB compatible printer to the 4338B s GPIB port 3 Turn the printer ON 4 Set the 4338B
31. 6 Trig Mode key 3 7 TST 4 23 5 33 U A Mode key 3 5 UNKNOWN terminals 3 8 W WAI 4 8 5 33 REGIONAL SALES AND SUPPORT OFFICES For more information about Agilent Technologies test and measurement products applications services and for a current sales office listing visit our web site http www agilent com find tmdir You can also contact one of the following centers and ask for a test and measurement sales representative 11 29 99 United States fax 61 3 9272 0749 Agilent Technologies tel 0 800 738 378 New Zealand Test and Measurement Call Center fax 64 4 802 6881 P O Box 4026 Englewood CO 80155 4026 Asia Pacific tel 1 800 452 4844 Agilent Technologies 24 F Cityplaza One 1111 King s Road Canada Taikoo Shing Hong Kong Agilent Technologies Canada Inc tel 852 3197 7777 5150 Spectrum Way fax 852 2506 9284 Mississauga Ontario L4W 561 tel 1 877 894 4414 Europe Agilent Technologies Test amp Measurement European Marketing Organization P O Box 999 1180 AZ Amstelveen The Netherlands tel 31 20 547 9999 Japan Agilent Technologies Japan Ltd Call Center 9 1 Takakura Cho Hachioji Shi Tokyo 192 8510 Japan tel 81 426 56 7832 fax 81 426 56 7840 Latin America Agilent Technologies Latin American Region Headquarters 5200 Blue Lagoon Drive Suite 950 Miami Florida 33126 U S A tel 305 267 4245 fax 305 267 4286 Australia New Zealand
32. AUTO SENSe 5 24 incoming inspection 1 9 INITiate 5 21 INITiate CONTinuous 4 10 5 21 INITiate IMMediatel 4 10 5 21 initiate state 5 40 INITiate subsystem 5 21 internal resistance measuring 6 5 internal trigger mode 2 6 3 7 K key lock 2 12 3 11 GPIB command 5 28 Key Lock key 3 11 KLOCKk SYSTem 5 28 L Lel key 3 8 Level key 3 4 LFRequency SYSTem 5 28 LINE frequency 3 12 GPIB command 5 28 how to set 1 13 4 5 LINE Fuse Holder 3 15 LINE Voltage Selector 3 15 local mode 2 12 LRN 4 9 5 31 M manual changes A 1 manual trigger mode 2 6 3 7 MATH EXPRession CATalog CALCulate 1 2 5 13 MATH EXPRession NAME CALCulate 1 2 5 14 MATH STATe CALCulate 1 2 5 14 MAV Message Available Bit 5 35 Max key 3 10 Meas Prmir key 3 5 Meas Time key 3 5 measured value display key 3 5 measurement parameter 3 5 GPIB command 5 11 how to select 4 5 measurement range 3 6 GPIB command 5 24 how to select 4 6 Measurement Settings 2 11 measurement time mode 3 5 GPIB command 5 23 how to select 2 2 how to set 4 6 Min key 3 10 N lt numeric_value gt 5 5 O OPC 4 8 5 31 DPC 4 8 5 32 OPERation STATus 5 26 Operation Complete Bit 5 36 OPERation CONDition STATus 5 26 OPERation ENABle STATus 5 26 OPERation EVENt STATus 5 26 operation status register 5 38 OPT 5 32 OVLD 3 6 OVVOL 3 4 P performance test record 9 10 POINts DATA 5
33. AVERage COUNt SENSe 5 22 Average key 3 6 AVERage STATe SENSe 5 22 averaging rate 3 6 GPIB command 5 22 how to set 2 2 4 7 B backup memory 3 3 BEEPer CALCulate 1 2 LIMit 5 11 5 12 SYSTem 5 28 beeper 3 12 GPIB command 5 11 5 28 how to set 2 4 4 7 Bk Sp key 3 10 BLUE shift key 3 9 lt Boolean gt 5 6 BUF1 5 15 BUF2 5 15 bus trigger mode 3 7 C CALCulate 1 2 FORMat 4 5 5 11 CALCulate 1 2 LIMit BEEPer 4 7 5 11 5 12 CALCulate 1 2 LIMit CLEar 4 8 5 12 CALCulate 1 2 LIMit FAIL 4 8 5 12 CALCulate 1 2 LIMit LOWer DATA 4 8 5 12 CALCulate 1 2 LIMit LOWer STATe 4 8 5 13 CALCulate 1 2 LIMit STATe 4 8 5 13 CALCulate 1 2 LIMit UPPer DATA 4 8 5 13 CALCulate 1 2 LIMit UPPer STATe 4 8 5 13 CALCulate 1 2 MATH EXPRession 4 8 5 13 5 14 CALCulate 1 2 MATH STATe 4 8 5 14 CALCulate subsystem 5 10 calculation sheet 9 9 cleaning 1 9 CLEar CALCulate 1 2 LIMit 5 12 CLS 4 23 5 31 Command Error CME Bit 5 36 comparator GPIB command 5 12 5 13 how to use 2 7 4 8 limit 3 9 on off 3 10 Comptr key 3 10 CONDition STATus OPERation 5 26 Config key 3 12 Contack Check GPIB command 5 24 contact check 3 11 how to set 2 3 contact resistance measuring 6 2 CONTinuous INITiate 5 21 CONTrol DATA FEED 5 17 CORRection COLLect ACQuire SENSe 5 22 CORRection COLLect METHod SENSe 5 23 CORRection DATA SENSe 5 23
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35. Beep FAIL Beep Short correction data Cleared Contact Check OFF Config The Configuration key is used to set the beep mode and the power line frequency setting and to run the performance tests Configuration Key Beep Comparison results output to the beeper are classified as follows Off no output to beeper Pass emits a beep when the comparison result is IN Fail emits a beep when the comparison result is HI LO default In the beeper Pass or Fail mode the 4338B emits a beep whenever a system error or an operation error occurs In the beeper Off mode the error beep is turned OFF The setting is saved into EEPROM m Line Available power line frequency selections are 50 Hz and 60 Hz The power line frequency setting is stored and does not change after reset or power off Once you set it you do not need to set the line frequency again as long as the power line frequency remains the same m Svc There are five service functions KEY test front panel keys HNDL test the handler output signal CSUM run ROM check sum program RAM read write test RAM After the test the 4338B resets the instrument s settings EEPROM test EEPROM The data stored in EEPROM is not affected if no error is detected If the error is detected the 4338B clears the data and restores the default data m Test performs the self test which tests the 4338B s basic performance and displays the results as the sum of all existing err
36. Deviation measurement OFF Measurement range Auto Measurement time MEDium Averaging 1 Trigger mode Internal Trigger delay Oms Comparator OFF Display mode Measured data Beep FAIL beep mode Data transfer format ASCII SYSTem VERSion Returns the value corresponding to SCPI version number for which the 4338B complies Query only Query response is YYYY V in lt NR2 gt format Where YYYY year version V revision number for the year GPIB Reference 5 29 4338B TRIGger Subsystem The TRIGger subsystem controls measurement trigger functions COMMAND PARAMETER TRIGger SEQuencel DELay lt numeric value gt MS S IMMediate SOURce BUS EXTernal INTernal MANual SEQuence2 DELay lt numeric value gt MS S TRIGger SEQuence1 DELay lt numeric_value gt MS S Sets or queries the source delay time lt numeric_value gt is numeric O to 9999 ms 1 ms resolution The default is O s MAXimum 9999 ms MIMimum 0 ms The following suffixes can be used with lt numeric_value gt Ss MS ms TRIGger SEQuence1 IMMediate Causes the trigger system to execute a measurement regardless of the trigger state No query TRIGger SEQuence1 SOURce BUS EXTernal INTernal MANual Sets or queries the trigger mode BUS GET command and TRG command triggers a single short measurement EXTernal TTL pulse input through the rear panel external trigger connector or through the handler in
37. LVL AUTO KEY HNDL CSUM RAM EEPROM AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Leve On Chk Only Lock 3 Select KEY using or and press B 4 Press the front panel key that you want to test For example if you want to test f then press f When the key functions properly KEY CODE 5 TRIGGER is displayed otherwise there will be no such display the key is not functioning correctly Contact your nearest Agilent Technologies office 5 When you want to exit the front panel key test press B twice 6 Select Exit and press B to exit Operating the 4338B 2 13 If You Have a Problem 4338B If You Have a Problem If any of the problems listed below occur follow the instructions described If the Display is Blank and the 4338B Appears Dead If the display is blank and even the annunciators are not ON a Check the fuse If an Error Message is Displayed o Refer to Messages If the 4338B does not Accept Any Key Input o Check whether the Rmt annunciator is ON m Check whether the external controller disables all the front panel controls by the LOCAL LOCKOUT command If so send the LOCAL command from the external controller Ad o Press ici o Check whether the Key Lock annunciator is ON au Check whether the handler or the 16064B LED display trigger box is connected to the 4338B and it locks out the
38. Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Meas Time Trigger Range Level On Chk Only Lock A blinking item is selected Measurement Settings c If the setting does not match the ac line frequency press to toggle the setting between 50 Hz and 60 Hz d Press B two times to exit this menu The power line frequency setting is stored and does not change after reset or on power off Once you set it you do not need to set the line frequency again as long as the same power line frequency is being used Getting Started 1 13 Using Front Panel Keys 4338B Using Front Panel Keys The 4338B has four types of keys as follows m Direct Execution Keys a Toggle Keys m Selection Keys a Value Setup Keys This section describes how to use the 4338B s front panel keys Note If you want to exit an operation and go back to the measurement display press i B several times Y Direct Execution Keys Pressing a direct execution key will cause the pressed key s function to be performed immediately For example Key Lock Press 0 and the 4338B s front panel keys are locked out Toggle Keys Pressing a toggle key will switch between several conditions An annunciator will indicate the current condition For example Press E and the Meas Time annunciator v alternately points to the current setting Short Med or Long Selection Keys Pressing a selection key will display the selection display
39. Model Number 4338B Product Options This declaration covers all options of the above product Conforms with the following product standards EMC Standard Limit IEC 61326 1 1997 A1 1998 EN 61326 1 1997 A1 1998 CISPR 11 1997 EN 55011 1998 AS NZS 2064 1 2 Group 1 Class A IEC 61000 4 2 1995 EN 61000 4 2 1995 A1 1998 4 kV CD 4 kV AD EC 61000 4 3 1995 EN 61000 4 3 1996 A1 1998 3 Vim 80 AM 80 1000 MHz IEC 61000 4 4 1995 EN 61000 4 4 1995 0 5 kV signal lines 1 kV power lines IEC 61000 4 5 1995 EN 61000 4 5 1995 0 5 kV line line 1 kV line ground IEC 61000 4 6 1996 EN 61000 4 6 1996 3 V 80 AM 0 15 80 MHz IEC 61000 4 11 1994 EN 61000 4 11 1994 1 cycle 100 Canada ICES 001 Safety IEC 61010 1 1990 A1 1992 A2 1995 EN 61010 1 1993 A2 1995 CAN CSA C22 2 No 1010 1 92 Conformity Supplementary information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC including 93 68 EEC and carries the CE marking accordingly European Union LEDs in this product are Class 1 in accordance with EN 60825 1 1994 ti The product was tested in a typical configuration with Agilent Technologies test systems Kobe Japan Dec 15 2000 Date For further information please contact your local Agilent Technologies sales office agent or distributor Safety Summary When you notice any of the unusual conditions listed below im
40. PRINT USING 15A X K Primary Comparator Compf PRINT USING 15A X K Secondary Comparator Comp2 ELSE PRINT USING 19A Comparator OFF END IF END Figure 4 7 Reading out measured result in binary transfer format using FETC command Remote Operation 4 21 To Retrieve Data Efficiently 4338B To Retrieve Data Efficiently The basic procedure to retrieve measurement is described in To Trigger a Measurement This section describes how to retrieve the measurement data efficiently To Use a Data Buffer You can use the data buffer to temporarily store the results of several measurements and then later read out these results in batch The following commands use the data buffer function DATA DATA POIN DATA FEED DATA FEED CONT For example OPTION BASE 1 DIM D 600 OUTPUT 717 TRIG SOUR BUS 1 OUTPUT 717 DATA POIN BUF1 200 OUTPUT 717 DATA FEED BUF1 CALC1 OUTPUT 717 DATA FEED CONT BUF1 ALW 1 FOR I 1 TO 200 OUTPUT 717 TRIG NEXT I 1 OUTPUT 717 DATA BUF1 ENTER 717 D x PRINT D x 4 22 Remote Operation 4338B Other Features Other Features To test the 4338B The following command performs the internal self test m TST For example OUTPUT 717 TST ENTER 717 A IF A lt gt 0 THEN PRINT Self Test Error To Report the Instrument s Status The following commands report the instrument s status m CLS m ESE m ESR m SRE m
41. Record Calibration Cycle Test Signal Frequency Accuracy Test Specification Test Equipment Procedure Resistance Measurement Accuracy Test Specification Test Equipment Procedure Calculation Sheet o Test Signal Frequency Accuracy Test Resistance Measurement Accuracy Test Performance Test Record Test Signal Frequency Accuracy Test Resistance Measurement Accuracy Test Functional Test Introduction Test Equipment o Test Signal Level Functional Test Test Equipment Procedure Handler Interface Functional Test Test Equipment Procedure Initial Setup Key Lock Function Test External Trigger Function Test Handler Interface Output Test Functional Test Record 7 1 7 1 7 2 7 2 7 3 8 1 8 2 8 2 8 2 8 2 8 3 8 5 8 6 8 7 9 1 9 1 9 2 9 2 9 2 9 2 9 3 9 3 9 4 9 4 9 4 9 4 9 6 9 6 9 6 9 6 9 9 9 9 9 9 9 10 9 10 9 10 9 11 9 11 9 11 9 12 9 12 9 12 9 14 9 14 9 14 9 14 9 14 9 14 9 15 9 16 Contents 7 Test Signal Level Functional Test 2 2 2 a a a 9 16 A Manual Changes Introduction 2 2 a a A 1 Manual Changes A 1 Changel 2 A A 2 Serial Number o a a a a L A 3 B Handler Interface Installation Introduction 2 a a a e B 1 Electrical Characteristics 0 a0 a a a a a a a B 1 Output Signals a a a a a a B 1 Input Signals B 4 Setting Up the Handler Interface Board B 5 Tools and Fasteners a a a ee B 5 P
42. SRQ interrupt Displays the message to prompt the user to input an external trigger and then waits until the external trigger is inputted and the measurement finishes Line 300 Executes the measured result readout command FETC Lines 310 to 340 Reads out the header part Line 360 If the Comp flag value is 1 the comparator function is ON reads out the measurement status measured primary parameter result measured secondary parameter result and comparator sorting result Note Binary data must be read out without formatting Therefore use an I O path i Binary set up as such for readout This is also applicable to Line 380 Y Line 380 Line 400 Lines 440 to 460 Line 480 to 490 Line 510 If the Comp flag value is not 1 the comparator function is OFF reads out the measurement status measured primary parameter result and measured secondary parameter result Reads out the message terminator at the end of the data Displays the measurement status measured primary parameter result and measured secondary parameter result If the Comp_flag value is 1 the comparator function is ON displays the comparator sorting result If the Comp_flag value is not 1 the comparator function is OFF displays Comparator OFF 4 20 Remote Operation 4338B 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320
43. Table 1 1 Line Voltage Selection Voltage Selector Power Line Required Fuse Voltage 115V 100 120Vac 10 UL CSA type Time delay 0 5A 250V Agilent part number 2110 0202 230V 220 240Vac 10 UL CSA type Time delay 0 25A 250V Agilent part number 2110 0201 1 12 Getting Started 4338B Turning ON the 4338B Preparation for Use 1 Connect the power cable to the power cord receptacle on the rear panel 2 Push the LINE switch in The 4338B will emit a beep when it turns ON and perform the self test If any message is displayed see Error Messages in the back of this manual The 4338B will be ready for operation after a message like the one shown in the following figure is displayed Shift LD001305 HP 4338B Rev 01 00 Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Meas Time Trigger Range Level On Chk Only Lock 3 Confirm that the power line frequency setting is correct a Press E The following menu is displayed Shift Measurement Settings LD001306 R 12 345mQ LVL AUTO Beep Line Svc Test Exit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock b Press until the Line blinks then Press B Shift LD001307 R 12 345mQ LVL AUTO Line Freq 50Hz 60Hz AVG Short Med
44. Trigger Range Level On Chk Only Lock If you select Digit the display digits selection menu appears Select the desired display digits using or o and press B After selecting the display digits the 4338B returns to the display mode selection menu Shift LD002455 R 12 345m 9 X 0 1000m amp LVL AUTO Digit 3 4 35 AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock 2 10 Operating the 4338B 4338B Making a Measurement To Change the Measurement Settings Display Mode D Each time is pressed the current settings of the 4338B are displayed one after another on the right side of the LCD display The information displayed and the order of display is as follows 1 Test signal level and Averaging rate Shift 10002155 R 12 345m0 X 0 1000m Q LVL AUTO AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level Chk Only Lock 2 Trigger delay time and Source delay time Shift 10002156 R 12 345m0 X 0 1000m Q TDLY 0 500s SDLY 0 500s Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level Chk Only Lock 3 Comparator limits of the primary parameter Shift LD002157 R 12 345m0 X
45. annunciator v points to the current setting of the 4338B The annunciators are Meas Time Measurement Time indicates measurement time Short Medium or Long Trigger indicates the trigger mode Internal Manual or External Hold Range shows the measurement range mode Hold when the annunciator is displayed or Auto when the annunciator is not displayed Hold Level indicates that the 4338B is in the Hold level mode When in the Auto level mode the Hold level annunciator is not displayed Cmprtr On Comparator On indicates the comparator function is ON Cont Chk Contact Check On indicates the contact check function is ON Talk Only Talk Only mode indicates the 4338B is performing an GPIB input or output data transfer Rmt Remote indicates the 4338B is in the GPIB remote mode Key Lock indicates the 4338B s front panel keys are disabled Shift indicates the secondary key functions printed above the keys in BLUE characters are the active functions 3 2 Function Reference 4338B Front Panel LINE Switch Power ON OFF switch In the 1 ON position power is applied and all operating voltages are applied to the instrument In the 0 OFF position no power is applied and no operating voltages are applied to the instrument The 4338B s settings are held in backup memory for 72 hours after power is turned OFF and are restored as the current settings when power is turned ON again within the 72 hours period The ba
46. dip switch to select the voltage level for the input signals Caution SUSCEPTIBLE TO DAMAGE FROM ESD Perform the following procedures only at a static save workstation and wear a grounding strap Tools and Fasteners The 4338B mechanical components are secured using metric threaded fasteners Many fasteners in the 4338B may appear to be Phillips type but they are Pozidrive type fasteners To avoid damaging them use only Pozidrive screwdrivers to remove or tighten Pozidrive type fasteners Procedure 1 Disconnect the power cable from the 4338B and allow enough time 10 minutes for the internal capacitors to discharge Warning Dangerous energy and voltage levels exist within the 4338B when it is in operation and just after it is powered down Allow 10 minutes for the 4338B s internal capacitors to discharge before starting to work on it 2 Remove the two screws which fasten the cover to the chassis rear panel 3 Slide the cover toward the rear while holding the front panel bezel The following figure shows the location of the Al main board and the A2 CPU board Handler Interface Installation B 5 Tools and Fasteners 4338B A1 Main Board L700B005 4 Remove the
47. gt measurement data of primary parameter lt data2 gt measurement data of secondary parameter Meaningless output when the secondary parameter is none lt compl gt comparison result of primary parameter No output when the comparator function is OFF lt comp2 gt comparison result of secondary parameter No output when the comparator function is OFF Meaningless output when the secondary parameter is none In High Low no contact o e De System reset or power on don t affect the address setting Save The Save key stores the 4338B s current settings in non volatile memory EEPROM The settings saved are the same as the backup settings listed in LINE Switch description You must enter the register number 0 to 9 to assign the register into which the settings will be saved Up to 10 sets of instrument settings can be saved Save Key Caution The 4338B overwrites the instrument s setting into the assigned register without notice if settings are already stored in the assigned register the Y settings will be lost when the new settings overwrite them 3 8 Function Reference 4338B Front Panel Recall Key The Recall key recalls instrument s setting saved in non volatile memory EEPROM You must enter the register number 0 to 9 to assign the register from which the settings will be recalled If the register from which the settings are to be recalled is empty the error message RECALL FAIL
48. in the specified register The 4338B has 10 available storage registers 0 through 9 lt numeric_value gt is numeric 0 to 9 lt NR1 gt format SRE lt numeric_value gt The SRE service request enable command sets the bits of the service request enable register lt numeric value gt is numeric decimal expression of the contents of the service request enable register Bit 6 must be always 0 in lt NR1 gt format SRE The SRE service request enable query returns the contents of the service request enable register Query response is the decimal expression of the contents of the register Bit 6 is always 0 in lt NR1 gt format 5 32 GPIB Reference 4338B WAI STB The STB status byte query reads the status byte by reading the master summary status bit Query response is the decimal expression of the contents of the status byte register in lt NR1 gt format TRG The TRG trigger command triggers the 4338B when the trigger mode is set to the bus trigger mode TST The TST self test query executes an internal self test and returns the test result as the sum of all existing errors codes If there are no error the 4338B returns 0 Test Item Error Code 1 RAM read write 1 2 EPROM 2 3 Calibration data EEPROM 4 4 User s data EEPROM 8 5 AD converter 16 6 Backup RAM 32 Query response is O to 63 in lt NR1 gt format WAI The WAI the wait to continu
49. indicated by the Trigger annunciator v In the BUS mode the annunciator is not displayed Delay Tris Mode Delay Key The Delay key sets the trigger delay time and the source delay time The delay time specifies the time interval from the time at which the trigger occurs to the actual start of the measurement as shown in Figure 3 3 Each delay time can be set 0 ms to 9999 ms with 1 ms resolution The default delay time is O ms measurement trigger start measurement end measurement co ore im im source delay trigger delay measuring time time CDDESOTS Le00301 Figure 3 3 Source Delay and Trigger Delay Function Reference 3 7 Front Panel 4338B Local Key The Local key returns the 4338B to the local mode front panel operation from the GPIB remote mode computer controlled This key is the only front panel key activated while the 4338B is in the remote state When the 4338B is in the remote mode the Rmt annunciator v will be displayed Address Key 3 The Address key sets the 4338B s GPIB address The available GPIB addresses are the integer numbers from 0 to 30 Address 31 is the talk only mode in which the 4338B sends data through GPIB interface In the talk only mode output data is lt stat gt lt datal gt lt data2 gt lt compl gt lt comp2 gt Where lt stat gt measured status of each channel 0 normal 1 overload 2 no contact 4 over voltage lt datal
50. kHz 1 Test Result Measured Value Typical Value of 1 kHz Resistance Measurement Accuracy Test Measurement Uncertainty 0 0000088 kHz Standard Test Signal Test Limits Test Result Measurement Current Uncertainty 1 mQ 10mA 0 024 mQ mQ 0 001 mQ 10 mQ 10mA 0 054 mQ mQ 0 010 mQ 100 mQ ImA 0 45 mQ mQ 0 10 mQ 10 10mA 0 0043 Q 0 0010 0 10 9 10 pA 0 044 Q 0 008 Q 100 Q 1 pA 0 49 Q Q 0 021 Q 1 kQ 10 pA 0 0093 kQ kQ 0 00021 kQ 10 kQ 1uA 0 54 kQ kQ 0 0021 kQ 1 Test Result Measured Value Standard s Calibration Value 9 10 Maintenance Record 1 4338B Functional Test Functional Test Introduction This section provides the test procedures used to verify that the 4338B performs its designed functions The functional tests can be used for post repair function verification The test signal level functional test is recommended to be performed during the 4338B performance testing Record the test signal level functional test result in the test record at the end of this section Test Equipment Table 9 1 lists the test equipment required to perform the tests described in this section Equipment which equals or surpasses the key required specifications of the recommended equipment may be used Maintenance 9 11 Functional Test 4338B Test Signal Level Functional Test The 4338B s signal source output voltage is measured with an A
51. numeric_value gt MOHM mQ OHM Q KOHM kQ SENSe FUNCtion lt sensor_function gt Sets the measurement function to impedance measurement The 4338B measures the vector impedance of the DUT and then uses the vector impedance to calculate the other measurement parameters You can select the measurement parameter using CALCulate 1 2 FORMat command sensor_function measurement function FIMPedance impedance SENSe FUNCtion is always set to FIMPedance which is only lt sensor_function gt of the 4338B Query response is FIMP 5 24 GPIB Reference 4338B SOURce Subsystem SOURce Subsystem COMMAND PARAMETER SOURce CURRent LEVel IMMediate AMPLitude lt numeric_value gt UA MA AUTO lt Boolean gt SOURce CURRent LEVel IMMediate AMPLitude lt numeric_value gt UA MA Entries or queries the test level The available test signal levels are 1 Arms 10 Arms 100 Arms 1 mArms and 10 mArms while each test signal level limits the measurement range as shown in Figure 3 2 lt numeric_value gt is numeric 1 0x10 1 0x10 1 0x10 1 0x10 and 1 0x10 Arms MAX imum 10 mArms MINimum 1 Arms The following suffixes can be used with lt numeric_value gt UA pA MA mA Query response is lt numeric_value gt Note The peak voltage across the DUT must be always less than 20 mV When the i peak voltage across the DUT exceeds 20 mV the source output level is reduced Y to O V
52. performed the DUT s impedance Zpur is calculated using the equation given in Figure 7 1 c Measurement Range For any measurement range the maximum accuracy is obtained when the measured impedance is close to the full scale value of the measurement range being used Conversely if the measured impedance is much lower than the full scale value of measurement range being used the measurement accuracy will be reduced This sometimes cause a discontinuity occurs in the measurement values at the measurement range boundaries If measurement range is set to Auto range the impedance curve will skip when impedance range change occurs To prevent this from occurring the impedance range should be set to the Hold range mode Dry Circuit Loop When the voltage applied between the contacts is high the oxidation film which is formed between the contact is destroyed and the resistance value measured may be smaller than under actual use Moreover once the oxidation film is destroyed the contact will never recover the its former condition even if the voltage across the contact is cut off According to the recommended standards of the International Electrotechnical Commission IEC measurement of contact resistance using ac test signal should be conducted using instruments whose test signal peak voltage values are 20 mV or less The 4338B s test voltage level goes to O V if the peak voltage value across the DUT exceeds 20 mV The 4338B s
53. purposes during periodic maintenance troubleshooting and after repair or adjustment Calibration Cycle The 4338B requires periodic performance tests The frequency of performance testing depends on the operating and environmental conditions under which the 4338B is used Verify the 4338B s performance at least once a year using the performance tests described in this section Maintenance 9 3 Performance Tests 4338B Test Signal Frequency Accuracy Test The 4338B s test signal frequency is measured with a frequency counter Specification Test Signal Frequency 1kHz 0 1 Test Equipment Description Recommended Model Universal Counter 5334B 30 cm BNC m BNC m Cable PN 8120 1838 61 cm BNC m BNC m Cable PN 8120 1839 Procedure 1 Reset the 4338B using the following procedure a Press to display the system reset menu b Press or until Yes blinks and press gm 2 Set up the equipment as shown in Figure 9 1 Universal Connter 30 cm BNC m BNC m Cable N 61 cm BNC m BNC m Cable Figure 9 1 Test Signal Frequency Accuracy Test Setup 3 Set the test signal level to 10 mA using the following procedure a Press to display the test signal level setting menu b Press or until 10 mA blinks and press B 9 4 Mainte
54. s GPIB address to 31 talk only mode Press Adrs Comprtr Enter do El OWE eo The printer will begin printing the measurement data 5 When you want to stop printing change the 4338B s GPIB address to an address other than 31 for example 17 which is the default setting P Adrs Comprtr Min Enter res E li 1 1 E 2 12 Operating the 4338B 4338B To Test the 4338B To Test the 4338B To Perform a Self Test The 4338B has a self test function to check its basic performance Config 1 Press E Shift 10001306 R 12 345mQ LVL AUTO Beep Line Svc Test Exit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Leve On Chk Only Lock 2 Select Test using or o then press B to execute the self test If any error message is displayed refer to Error Messages 3 Select Exit and press B to exit To Test the Front Panel Keys Functionality The 4338B has a service function to test the functionality of the front panel keys the handler interface the ROM the RAM and the EEPROM This section describes how to test the front panel key s functionality For the handler interface test refer to Chapter 9 for the procedure The other tests are for use by service personnel only Config Bi 2 Select Svc using or and press B 1 Press Shift 10002308 R 12 345m 9
55. selection 2 1 a a a a a 3 15 Contact Assignment for Comparator Function 3 17 GPIB Interface Capability a a a a 3 19 Source Voltage and Source Resistance k a a a a e 3 22 Suffix Multiplier a a a a a 5 6 Measurement Parameter Selection 2 a a a a a a 5 11 Status Byte Assignments oaoa ee e 5 35 Standard Event Status Register Assignments RA 5 36 Operation Status Condition Register Assignments 2 5 38 Operation Status Event Register Assignments 5 38 Questionable Status Register Assignments 0 0 0 0 0 2 08 5 38 Measurement Accuracy 2 0 6 ee ee 8 4 Required Equipment 2 2 2 ee 9 1 Resistance Measurement Accuracy Test Settings 2 0 0 000 2 0084 9 8 CE 9 13 Manual Changes by Serial Number 0 2 a A 1 Manual Changes by ROM Version A 1 Handler Output Electrical Characteristics o oao a a a e a a B 1 Handler Input Electrical Characteristics 0 0 a a a a a e B 4 Pull up Resister Locations oao aoa a a a B 8 OVLD OVVOL N C Condition a a a e C 1 Combination of any two OVLD OVVOL N C Conditions C 2 Simultaneous OVLD OVVOL N C Condition 08 C 3 Contents 11 Getting Started Introduction This chapter provides the information necessary to get you started using your 4338B Milliohmmeter This chapter discusses the following topics Overview Incoming Inspe
56. signal levels are 1 Arms 10 Arms 100 Arms 1 mArms and 10 mArms Figure 3 2 shows the available measurement range for each test level Leglstance 19 lu 104 1004 im 10m 100m 1 o ik 10k 100k 1000k im 10m 100m 1 100 dk 10k 0 Measurement Range test level selection of auto level mode In this area 4338B automatically averages measurement results so the measurement takes longer effective mesurement range measurement parameter is R j displayabble range measurement paremetere is R Figure 3 2 Test Level and Measurement Range Setup If the measurement range setting doesn t match the test signal level you choose the 4338B selects the nearest measurement range from the current setting that satisfies the measurement limits for the selected test signal level The level key can also select the auto level mode In the auto level mode the test signal level is linked to the measurement range settings as follows Range 10kQ 1kg 1002 102 1Q 100m9 10m9 1m0 Level 1 pA 10 pA 1004A 1mA 10mA When the auto level mode is not selected the Hold level annuunciator is displayed Note The 4338B s test signal output is enabled when a measurement is triggered and i disabled when the measurement is completed See Delay Key Y 3 4 Function Reference 4338B Front Panel Note The peak voltage across the DUT must always be less than 20 mV When the i
57. the OVLD OVVOL or N C is displayed during the SHORT correction the 4338B will display the following warning message When the contact check function is ON the values of 9 9999E13 are stored as R and X in the MeasVal Shift 10001326 WARNING Improper Correction AVG R 12 345mQ LYL AUTO Short Med Long Int Man Ext Hold Hold Comertr Cont Talk Rmt Key Measurement Settings Meas Time Trigger ange Level 0 Chk Only Lock If you select MeasVal in the short correction menu the 4338B displays the SHORT correction data 1 Select MeasVal and press B The 4338B displays the primary parameter R of the SHORT correction data 2 Press B The 4338B displays the secondary parameter X 3 Press B to return to the SHORT correction menu Note When WARNING Improper Correction is displayed 99 999TQ are set at R i X values Y Getting Started 1 21 To Select Measurement Range 4338B To Select Measurement Parameter 1 Press f The following menu is displayed Shift 0001352 R 12 345m Q LVL AUTO R RX RL Z 0 AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger ange Level In Chk Only Lock 2 Press or to select the dsesired parameter then press B eR eR X eR L eZ 0 To Select Auto Measurement Mode The 4338B has an Auto Measurement Function which allows aut
58. the 4338B Handler Interface Caution When the measurement parameter R is selected GPIB output and Handler Interface output are following GPIB output lt Comp2 gt 0 Handler output SHI signal isn t detected C 2 Overload Over Voltage No Contact Operations 4338B Overload Over Voltage No Contact Operations Table C 3 shows the summary of operations when the 4338B detects OVLD Overload OVVOL Over Voltage and N C No Contact simultaneously The 4338B performs one of following cases in the Table C 3 Table C 3 Simultaneous OVLD OVVOL N C Condition Condition Display Handler GPIB Output Solutions Output Data Mode Comprtr Mode OVLD amp N C N C OVVOL or lt State gt 2 Select an OVVOL amp N C N C lt Data gt 9 9999E13 approptiate lt Comp gt 8 measurement range Change OVVOL High PHI and SHI lt State gt 4 tothe or OVVOL or lt Data gt 9 9999E13 appropriate N C lt Comp gt 2 signal level Cancel the bad contact between the DUT and the contact pin 1 Refer to the FETCh Command in Chapter 5 2 Measurement Status 0 Normal 1 Overload 2 No Contact 4 Over Voltage 3 Comparison result 1 IN 2 HIGH 4 LOW 8 No Contact 4 OVVOL signal or N C signal is detected from the Pin No 38 in the 4338B Handler Interface Caution When the measurement parameter R is selected GPIB output and Handler
59. the DUT A DUT Rs vs Ay measurement result Z T LD0E3011 Figure 3 11 Simplified Model of 4338B Figure 3 11 shows a simplified model of the 4338B The 4338B can select test current levels of lA 10uA 1004 A 1mA and 10 mA The selection of test signal level decides the 4338B s test voltage source level Vs and its source resistance Rs as follows Table 3 4 Source Voltage and Source Resistance Level JA 104A 1004A ImA 10 mA Vs llmv 110mV Rs 111100 11100 1100 10 10 10 19 The signal level across the DUT depends on the test voltage source level Vs the source resistance of the 4338B Rs and the impedance of the DUT Rpur as follows o Vs Rs Rpur If the DUT s resistance is low enough to be assumed as 0 when compared with Rs the test current level I will be close to the selected level If DUT s resistance is high and cannot be assumed to be 0 when compared with Rs the test signal level will differ from the selected test signal level For example to measure resistance 20 Q with a 100 A test signal level the limV actual signal level across the DUT will be 85 A tronpa Limitation of Test Level The 4338B automatically sets the test signal level to O V when the test voltage across the DUT exceeds 20 mV For more information see Dry Circuit Loop in Chapter 7 3 22 Function Reference Remote Operation Introduction
60. this cable grounds the instrument frame The type of power cable shipped with each instrument depends on the country of destination Refer to Figure 1 1 for the part numbers of the power cables available Warning For protection from electrical shock the power cable ground must not be defeated The power plug must be plugged into an outlet that provides a protective earth ground connection 1 10 Getting Started 4338B Overview OPTION 900 OPTION 901 Earth TT _ Neutral Line Plug BS 1363A 250V Plug NZSS 198 AS C112 250V Cable 8120 1351 Cable 8120 1369 OPTION 902 OPTION 903 gt A Earth gt E Neutral Line Plug CEE VII 250V Plug NEMA 5 15P 125V 154 Cable 8120 1689 Cable 8120 1378 OPTION 904 OPTION 906 Line 1 Ox N Line 2 gt Earth Line Plug NEMA 6 15P 250V 15A Pug ote Type 12 250V Cable 8120 0698 OPTION 912 OPTION 917 e Ground earth Neutral Neutral Plug DHCR 107 220V Plug SABS 164 250V Cable 8120 2956 Cable 8120 4211 OPTION 918 OPTION 922 Neutral Line Plug JIS C 8303 125V 15A Plug GB 1002 250V Cable 8120 4753 Cable 8120 8376 NOTE Each option number includes a family of cords and connectors of varoius materials and plug body configurations straight 90 etc Figure 1 1 Power Cable Supplied Getting Started 1 11 Preparation for Use 4338B Preparation for Use Before you use the 4338
61. to the residual impedance of the cable and test fixture no query The SHORT correction must be performed with the high and low terminals shorted together directly or using a low impedance shorting device This command sets SENSe CORRection STATe ON which enables the correction function 5 22 GPIB Reference 4338B SENSe Subsystem Note 2 of STANdard2 cannot be omitted The short form must be STAN2 uy SENSe CORRection COLLect METHod REFL1 Selects or queries available correction data Actually the 4338B can take only SHORT correction data so SENSe CORRection COLLect METHod is always set to REFL1 REFL1 selects the SHORT correction SENSe CORRection DATA STANdard2 Queries the short correction data R X Example OUTPUT 717 CORRectoin DATA STAN2 ENTER 717 R X Note When WARNING Improper Correction is displayed 99 999TQ are set at R X values y Note 2 of STANdard2 cannot be omitted The short form must be STAN2 i SENSe CORRection STATe ON OFF 1 0 Sets or queries if the SHORT correction data taken by SENSe CORRection COLLect ACQuire STANdard2 is enabled ON 1 enables the SHORT correction data OFF O disables the SHORT correction data Query response is 1 O Note The SHORT correction can be set to ON or OFF only by using GPIB commands i and cannot be set by using front panel key input Y SENSe FIMPedance APERture lt numeric_value gt MS
62. triggering the instrument from an external controller The readout procedure using the TRG command is described below 1 Use the TRIG SOUR command to set up the trigger mode to the GPIB trigger Bus 2 Execute the TRG command 3 Read out the measured result To repeat the measurement repeat Steps 2 and 3 Figure 4 4 and Figure 4 5 show sample programs using the TRG command Figure 4 4 is for the ASCII transfer format and Figure 4 5 is for the binary transfer format These programs read out the measurement status measured primary parameter result measured secondary parameter result and comparator sorting result when the comparator function is ON and then display this information The program of Figure 4 4 is detailed below Line 60 Line 70 Lines 90 to 100 Lines 120 to 130 Lines 170 to 210 Line 230 Line 250 Lines 300 to 320 Line 340 to 350 Line 370 4 14 Remote Operation Sets the GPIB address Sets the data transfer format to the ASCIT format Turns ON the trigger system continuous startup and sets the trigger mode to the GPIB trigger Reads out the ON OFF state of the comparator function and assigns it to the Comp_flag variable After the trigger system state transitions to the trigger wait state triggers the instrument If the Comp flag value is 1 the comparator function is ON reads out the measurement status measured primary parameter result measured secondary parameter result and comp
63. up in the idle state use the INIT CONT command to turn ON the continuous activation of the trigger system Two methods to perform a measurement at your desired time Triggering the instrument at your desired time 1 Use the TRIG SOUR command to set the trigger mode to the GPIB mode 2 If the trigger system has not started up in the idle state use the INIT CONT command to turn ON the continuous activation of the trigger system 3 Trigger the instrument at your desired time An external controller can trigger the instrument with one of the following two commands Command Query response Applicable trigger mode TRG Yes The measured result is read out GPIB trigger TRIG No All 4 To repeat measurement repeat Step 3 Starting up the trigger system at your desired time 1 If the trigger system has started up in a state other than the idle state use the INIT CONT command to turn OFF the continuous activation of the trigger system and then use the ABOR command to stop the trigger system 2 Set the trigger mode to the internal trigger with the TRIG SOUR command 3 Start up the trigger system with the INIT command at your desired time The instrument will be automatically triggered by the internal trigger and measurement will be performed once 4 To repeat measurement repeat Step 3 4 10 Remote Operation 4338B Waiting For Completion Of Measurement detecting completion of measurement Wait
64. 0 054 m 0 025 m 100 m 1m 0 45 m 0 18 m 1 10m 0 0043 0 00020 10 10 yu 0 044 0 017 100 1u 0 49 0 15 1k 10 u 9 3 0 0019 k 10 k 1u 540 0 025 k Copyright 2008 Agilent Technologies Agilent 4338B Milliohmmeter Operation Manual Manual Change Agilent Part No N A June 2007 Change 1 Add the following note to the 3 c Turning ON the 4338B page 1 13 Note In case the setting of the ac line frequency is not match there s any possibility the measurement error will rise Make sure the ac line frequency has been set up correctly Change 2 Add the following condition to the Measurement Accuracy page 8 3 3 The ac line frequency has been set up correctly Copyright 2007 Agilent Technologies ZIP Fry Ee 1 4338B DO SIRE AO FIR 3 c lt 1 10 ICLL FORMS IBMIULT FAV teat AC EIA BEEK OD GENE EU CWRU GE MIERDA ADHERED do Y ED oS AC FEA BB wIEL lt RELT FSU EE 2 PEMERZO AE OY 8 3 ICAP ORES IBINL T FSU 3 ACERA ED UE LI MEAN TVS Copyright 2007 Agilent Technologies DECLARATION OF CONFORMITY According to ISO IEC Guide 22 and CEN CENELEC EN 45014 Manufacturer s Name Agilent Technologies Japan Ltd Manufacturer s Address 1 3 2 Murotani Nishi ku Kobe shi Hyogo 651 2241 Japan Declares that the product Product Name Milliohm Meter
65. 10 1 Press 0 Shift 10001310 R 12 345mQ Average 10 LVL AVG gt AUTO Short Med Long Int Man Ext Hold Hold Meas Time Trigger ange Level 2 Press B Talk Rmt Key Measurement Settings Only Lock Getting Started 1 15 Using Front Panel Keys You can also enter numeric parameters using engineering units 4338B 1 Press The comparator limit menu is displayed 2 Press 0 Shift L0001311 R 12 345m Q LVL AUTO Pri Low Limit 100 AVG NO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock 3 Press EE and the engineering unit will be displayed with 100 For example 100K will displayed Shift 10001312 R 12 345m8 LVL AUTO Pri Low Limit 100k AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level In C Only Lock 4 Press more several times and the engineering units are displayed alternately in increasing order 5 Press and the engineering unit previously displayed will be displayed again 6 Press B to enter the value and exit this menu Note Before you press B the previous setting is still the current setting even a the displayed value will be discarded though the displayed value has changed If you press a key othe
66. 17 power cable 1 10 Power Cord Receptacle 3 15 Power Requirements 1 12 PRESet STATus 5 27 SYSTem 5 29 Pri key 3 9 Q Query Error Bit 5 36 QUEStionable STATus 5 27 QUEStionable CONDition STATus 5 27 QUEStionable ENABle STATus 5 27 questionable status register 5 38 R Range Setup key 3 6 RCL 4 9 5 32 Rel key 3 9 real data format 5 20 5 42 recall 3 9 GPIB command 5 32 instrument settings 2 4 REF1 5 15 REF2 5 15 reset 3 12 GPIB command 5 29 how to 1 20 4 5 resistance measurement accuracy test 9 6 RQS Request Service Bit 5 35 RST 4 5 5 32 S SAV 4 9 5 32 save 3 8 GPIB command 5 32 instrument settings 2 4 Save key 3 8 Sec key 3 9 self test 3 12 GPIB command 5 33 how to perform 2 13 SENSe AVERage COUNt 4 7 5 22 SENSe AVERage STATe 4 7 5 22 SENSe CORRection COLLect ACQuire 4 5 5 22 SENSe CORRection STATe 4 5 5 23 SENSe FIMPedance APERture 4 6 5 23 SENSe FIMPedance CONTact VERify 5 24 SENSe FIMPedance RANGe AUTO 4 6 5 24 SENSe FIMPedance RANGe UPPer 4 6 5 24 SENSe subsystem 5 22 lt sensor function gt 5 6 5 24 serial number A 3 Service Request Enable Register 5 34 Index 3 Service Request SRQ 5 34 SHORT correction 3 11 concept 7 1 GPIB command 5 22 5 23 how to perform 1 20 4 5 SHORT correction data GPIB command 5 23 Short key 3 11 SOURce CURRent 4 6 5 25 SOURce CURRent AUTO 4 6 5 25 sour
67. 2037A 2 10 KQ Standard Resistor 42038A 2 SHORT Termination 42091 A 1 Part of 42030A Standard Resistor Set 2 16074A can be used as a substitute Procedure 1 Record the 42030A Standard Resistor Set s calibration values on the calculation sheet 2 Reset the 4338B using the following procedure a Press to display the system reset menu b Press or until Yes blinks and press B 3 Connect the SHORT termination to the 4338B s UNKNOWN terminals 9 6 Maintenance 4338B Performance Tests 12 aofecce E DO DODO B gooo ogjoona 00060 D00D0jbDD00 DI 7 42091A 42030A Short Standard Termination Resistors Figure 9 2 Resistance Measurement Accuracy Test Setup Perform the SHORT correction using the following procedure Short a Press to display the SHORT correction menu b Press or until ShortMeas blinks and press qm c Press or until Exit blinks and press Press to set the trigger mode to Manual The Trigger annunciator v indicates Man Press to set the measurement time to Long The Meas Time annunciator v indicates Long Connect the 1 mQ Standard Resistor to the 4338B s UNKNOWN terminals Set the test signal level to 10 mA using the following procedure a Press to display the test signal level setting menu b Press or until 10 mA blinks and press B Press to measure 10 11 Record the 43
68. 221 Settings conflict A legal program data element was analyzed syntax but could not be executed due to the current device state see IEEE 488 2 6 4 5 3 and 11 5 1 1 5 222 Data out of range A legal program data element was analyzed syntax but could not be executed because the interpreted value was outside the legal range as defined by the 4338B see IEEE 488 2 11 5 1 1 5 Messages 5 Overload Over Voltage No Contact Operations 4338B 223 Too much data A legal program data element of block expression or string type was received that contained more data than the 4338B could handle due to memory or related device specific requirements 230 Data corrupt or stale Possibly invalid data new reading started but not completed since last access 241 Hardware missing A legal program command or query could not be executed because of missing 4338B hardware for example an option was not installed 310 System error Some error termed system error by the 4338B has occurred 311 Memory error An error was detected in the 4338B s memory 313 Calibration memory lost The nonvolatile calibration data has been lost When this error occurs during power on test the 4338B stops operation and asserts the ALARM signal on the handler interface When this error occurs during self test the 4338B continues operation and asserts the ALARM signal Contact your nearest Agilent Technologies office 350 Queue overflow A spe
69. 338B aoaaa a a a a 4 5 Contents 3 To Set the LINE Frequency 2 ee a To Perform the SHORT Correction 2 2 1 ee ee a To Select the Measurement Parameter 2 0 0 0 2 ee ee To Select the Auto Measurement Mode Coe ee ee To Select the Measurement Range o To Select the Test Signal Level Ce To Set the Measurement Time Mode 80 2 To Set the Averaging Rate 2 e To Set the Delay Time To Set the Beeper Mode To Use Comparator Function To Display a Deviation Measurement 2 1 1 ee ee ee ee To Wait Until Previously Sent Commands are Completed To Get the Current Instrument Settings 0 0 2 2 200022248 To Save and Recall Instrument Settings 0 2 2 To Trigger a Measurement 2 1 1 we a Waiting For Completion Of Measurement detecting completion of measurement Sample program 2 1 1 we a Reading Out Measured Result 2 2 a a a Reading out measured result using TRG command Reading out measured result using FETC command 202 To Retrieve Data Efficiently 0a a a a a ee To Use a Data Buffer 2 a a a e Other Features To test the 4838B8B_ a a a To Report the Instrument s Status If You Have a Problem If the 4338B Hangs Up When You Send ABORt Command 2 5 GPIB Reference Introduction 2 1 a GPIB Commands a a a a A Common Comma
70. 38B reading of R on the calculation sheet Calculate the test result according to the calculation sheet and record the result into the performance test record Perform this test for all standards and level settings listed in Table 9 2 The test signal level must be changed after the standard resistor is connected Maintenance 9 7 Performance Tests 4338B Table 9 2 Resistance Measurement Accuracy Test Settings Standard Test Signal Level 1 mo 10 mA 10 mQ 10 mA 100 mQ l mA 19 10 mA 109 10 pA 100 0 1 pA 1k9 10 pA 10 kQ 1 pA 9 8 Maintenance 4338B Calculation Sheet Test Signal Frequency Accuracy Test Counter Reading a kHz Resistance Measurement Accuracy Test Standard Test Signal Standard Calibration 1 mQ 10 mQ 100 mQ 19 10 9 100 9 1k9 10 kQ Current 10 mA 10 mA l mA 10 mA 10 pA l pA 10 pA l pA Value a mQ Test Result Equation a 1 00000 kHz 4338B Reading b mQ mQ kQ kQ Performance Tests mQ mQ mQ kQ kQ Test Result Equation b a b b b b b b b v o 2 r y DD Maintenance 9 9 Performance Tests Performance Test Record Agilent 4338B Milliohmmeter 4338B Serial No Date Temperature Tested by Humidity Test Signal Frequency Accuracy Test Test Signal Test Limits Test Result Frequency 1 kHz 0 0010 kHz
71. 4338B and prints it 10 ENTER 717 A 20 PRINT A 30 END Remote Operation 4 3 Getting Started 4338B To Control the 4338B from an External Computer Most measurements can be modeled on the following simple three step sequence 1 Set up the instrument Typically you begin the setup step by sending RST to set the instrument to its default settings Next if you need values different from the default settings change the settings one by one as required 2 Trigger the measurement The trigger may be generated automatically by steps taken in your setup commands or you can send an explicit trigger command To select the trigger source send the TRIG SOUR command with the trigger source parameter When you select BUS as the trigger source sending TRG triggers a measurement and retrieves the measurement data 3 Retrieving the data The following sections describes how to perform the tasks at each step Figure 4 1 shows a simple capacitance measurement program Step 1 OUTPUT 717 RST Resetting OUTPUT 717 INIT CONT ON Initiating trigger system OUTPUT 717 CALC1 FORM REAL Primary parameter R OUTPUT 717 CALC2 FORM NONE Secondary parameter None OUTPUT 717 TRIG SOUR BUS Trigger source Bus Step 2 OUTPUT 717 TRG Triggering Step 3 ENTER 717 S D1 D2 Retrieving data Figure 4 1 Simple Program Example 4 4 Remote Operation 4338B To Set Up the 4338B To Set Up the 4338B To Reset the 4338B
72. 5 to 24 V J5 4 PHI J5 5 PLO J5 6 SIN J5 7 SHI J5 8 SLO J5 9 OVVOL J5 10 ALARM Control Signal 5 to 15 V J5 11 Not used 6 Mount the pull up resistors for the comparison output signals Refer to Figure B 4 and Table B 3 for the location of the pull up resistors for the comparison output signals Use the following equation to determine the value of the pull up resistors R R k9 Vp V 3 where Vp is the pull up voltage The typical pull up resistor values are Pull up Pull up Resistor Voltage Agilent Part Number 5V 0757 0278 1 78 kQ 12 V 0757 0279 3 16 kQ 24 V 0757 0441 8 25 kQ 7 Mount the pull up resistors for the control output signals Refer to Figure B 4 and Table B 3 for the location of the pull up resistors for the control output signals Use the following equation to determine the value of the pull up resistors R R k9 Vp V 2 5 where Vp is the pull up voltage B 8 Handler Interface Installation 4338B The typical pull up resistor values are Pull up Pull up Resistor Voltage Agilent Part Number 5V 0757 0278 1 78 k9 9V 0757 0279 3 16 kQ 12 V 0698 3154 4 22 kQ 15 V 0757 0488 5 11 kQ 8 Set the SW1 according to the voltage value of EXT DCV2 EXT TRIG KEY LOCK EXT DCV2 SW1 1 SW1 2 SWw1 3 5to6V Close Close Close 6to9V Close Open Close 9to 15
73. 8 0Hp4338 0Hp4338 0Hp4338 0Hp4338 0Hp4338 0Hp4338 CALC1 LIM LOW MIN UPP 0 01 0Hp4338 DISP OFF TRIG SOUR EXT FORM REAL CALC1 LIM STAT ON DATA POIN BUF1 200 DATA FEED BUF1 CALC1 0Hp4338 DATA FEED CONT BUF1 ALW STAT OPER ENAB DVAL 0000000100000000 2 0Hp4338 SRE DVAL 11000000 2 0Hp4338 Triggering INIT CONT ON ON INTR Hp_ib GOTO Buffer_full ENABLE LOOP INTR 7 2 END LOOP Buffer_full OFF INTR DISP Buffer full OUTPUT Hp4338 DATA BUF1 ENTER Binary USING 6A A FOR I 1 TO 200 ENTER Binary St I Dat I Comp I 6 6 Application Measurement 4338B Measuring Internal Resistance of Batteries 530 NEXT I 540 ENTER Binary USING 1A AS 550 560 FOR I 1 TO 200 570 PRINT Status St I R Dat I 0HM Comp Comp 1 580 NEXT I 590 END Lines 70 and 80 Lines 100 and 110 Line 120 Line 130 and 140 Line 150 Lines 170 to 240 Lines 260 and 270 Line 280 Line 290 Line 300 Lines 320 to 340 Lines 360 and 370 Line 380 Line 400 Lines 420 to 450 Line 490 Lines 500 to 540 Line 560 to 580 Figure 6 3 Application Sample Program Resets the 4338B and clears the status byte register Sets the measurement parameters to the R only mode Sets the measurement time mode to SHORT Sets the measurement range to 100 mQ range Sets the test signal level to the 1 mA Performs the SHORT correction
74. 8B cannot detect a more specific error 161 Invalid block data A block data element was expected but was invalid for some reason see IEEE 488 2 7 7 6 2 for example an END message was received before the length was satisfied 168 Block data not allowed A legal block data element was encountered but was not allowed by the 4338B at this point in the syntax analysis process 170 Expression error This error as well as errors 171 and 178 are generated when analyzing the syntax of an expression data element This particular error message is used if the 4338B cannot detect a more specific error 171 Invalid expression The expression data element was invalid see IEEE 488 2 7 7 7 2 for example unmatched parentheses or an illegal character 178 Expression data not allowed A legal expression data was encountered but was not allowed by the 4338B at this point in the syntax analysis process 200 Execution errors This is the generic syntax error that the 4338B cannot detect more specific errors This code indicates only that an execution error as defined in IEEE 488 2 11 5 1 1 5 has occurred 211 Trigger ignored A GET TRG or triggering signal was received and recognized by the 4338B but was ignored because of 4338B timing considerations for example the 4338B was not ready to respond 213 Init ignored A request for a measurement initiation was ignored as another measurement was already in progress
75. A2 CPU board assembly a d Disconnect two flat cables which connect the A2 board to the keyboard assembly and the LCD assembly Remove the four screws that secure the A2 board to the stud Slide the A2 board toward front to disconnect the flat cable which connect the A2 assembly to the Al main board on the bottom Remove the A2 board from the chassis 5 Remove the Al main board assembly a Disconnect the following cable assemblies from the Al board i Four cables which are connected to the UNKNOWN connectors on the Front Panel ii The cable assembly from the transformer iii Two cable assemblies from the dc dc converter B 6 Handler Interface Installation 4338B Tools and Fasteners b Remove the four studs that secure the Al board to the chassis by rotating them using a flat blade screwdriver c Remove the screws that secure the Al board to the chassis d Remove the Al board from the chassis Figure B 4 shows the location of the socket for the pull up resisters J5 and the switch for EXT DCV2 voltage setting SW1 Table B 3 lists the location of the pull up resisters A1 Main Board Figure B 4 Al Main Board Location Handler Interface Installation B 7 Tools and Fasteners 4338B Table B 3 Pull up Resister Locations Socket Signal Signal Type No Name J5 1 EOM Control Signal 5 to 15 V J5 2 INDEX J5 3 PIN Comparison Signal
76. B you must set the 4338B to match the available power line voltage and frequency m set line voltage see Power Requirements m set line frequency see Turning ON the 4338B Power Requirements The 4338B s power source requirements are as follows Power Line Voltage 100 120 220 240 Vac 10 PowerLine Frequency 47 to 66Hz Power Consumption 45 VA maximum Confirm that the LINE Voltage Selector on rear panel is set to match the power line voltage before plugging in the 4338B Refer to Figure 1 2 1 Confirm that the power cable is disconnected 2 Slide the LINE Voltage Selector on the rear panel to match your power line voltage When your power line voltage is 100 120 Vac 10 slide the Selector to 115 V When your power line voltage is 220 240 Vac 10 slide the Selector to 230 V See Figure 1 2 N Fuse Use the fuse shown in Table 1 1 If you require the fuse contact the nearest Agilent Technologies sales office The fuse can be replaced by turning the fuse holder shown in Figure 1 2 counterclockwise until the fuse holder pops out with a minus screw driver Fuse Holder LINE LINE Voltage Fuse Voltage Fuse Selector TOSA Selector TOSA 250V 250V T 0 25A A 250V _ 10 254 O 250V Voltage Selector Ce 115V En 230V L X Power Code Receptacle O 50 60Hz O 50 60Hz VBA Max 0 45VA Max Figure 1 2 Voltage Selector and Fuse
77. BD TEST FAILED The Al board failed Contact your nearest Agilent Technologies office 21 LOCKOUT BY HANDLER Front panel key input is disabled by the handler The front panel key input cannot be enabled by the front panel keys or by GPIB commands when disabled by the handler Messages 2 4338B Overload Over Voltage No Contact Operations GPIB Errors 100 Command error This is a generic syntax error that the 4338B cannot detect more specific errors This code indicates only that a command error as defined in IEEE 488 2 11 5 1 1 4 has occurred 101 Invalid character A syntax element contains a character which is invalid for that type for example a header containing an ampersand SENSE amp 102 Syntax error An unrecognized command or data type was encountered for example a string was received when the 4338B was not expecting to receive a string 103 Invalid separator The syntax analyzer was expecting a separator and encountered an illegal character for example the semicolon was omitted after a program message unit RST TRIG 104 Data type error The syntax analyzer recognized an unallowed data element for example numeric or string data was expected but block data was encountered 105 GET not allowed A Group Execute Trigger GET was received within a program message see IEEE 488 2 7 7 108 Parameter not allowed More parameters were received than expected for the header for example the SE
78. C voltmeter Test Equipment Description Recommended Model Multimeter 3458A 30 em BNC m BNC m Cable PN 8120 1838 61 cm BNC m BNC m Cable PN 8120 1839 Dual Banana BNC f Adapter PN 1251 2277 Procedure 1 Reset the 4338B with the following procedure a Press to display the system reset menu b Press or until Yes blinks and press gm 2 Set up the equipment as shown in Figure 9 3 Dual Banana to Multimeter BNC f Adapter Joo Dogo gt 0 E golooo docu oolocoo 0000 D0Dbolbooo 30cm BNC m BNC f Cable 61cm BNC m BNC m Cable LOME1007 Figure 9 3 Test Signal Level Functional Test Setup 3 Set the 3458A Multimeter to Synchronously Sub sample AC voltage measurement mode using the following procedure a Press ACV to set the measurement mode to AC voltage b Press Shift S y 1 to display SETACY c Press 7 1 to display SYNC then press Enter 4 Set the test signal level to 1 mA using the following procedure a Press to display the test signal level setting menu 9 12 Maintenance 4338B b Press or until 1 mA blinks and press gm 5 Set the trigger delay time to 9 seconds using the following procedure a Press b Press c Press d Press A b luel dm to 2 to display the trigger source delay setting menu or u
79. CALC1 CALC2 niu 5 16 GPIB Reference 4338B DATA Subsystem DATA FEED CONTrol BUF1 BUF2 ALWays NEVer Sets or queries whether or not measurement data is fed into the data buffer The data fed to the data buffer using this command is specified by DATA FEED BUF1 BUF2 command This control has no effect if DATA FEED BUF1 BUF2 is set to NONE ALWays feed data into data buffer whenever new data available NEVer no data is in the buffer At RST DATA FEED CONTrol BUF1 BUF2 is set to NEVer Query response is ALW NEV DATA POINts BUF1 BUF2 lt numeric_value gt Sets or queries the size of a data buffer The amount of measurement data that can be stored into the data buffer is defined using this command This command returns data buffer pointer to the head of the buffer After that data will be stored from the head of the buffer DATA POINts query must have the parameter BUF1 or BUF2 which is the name of the data buffer So the query form is DATA POINts BUF1 or DATA POINts BUF2 lt numeric_value gt is numeric 1 to 200 Query response is lt numeric_value gt GPIB Reference 5 17 4338B DISPlay Subsystem The DISPlay subsystem controls the selection of the display mode COMMAND PARAMETER DISPlay WINDow STATe lt Boolean gt TEXT1 DIGit 3 4 5 PAGE 1 2 TEXT2 PAGE 1 213 4 DISPlay WINDow STATe ON OFF 1 0 Sets or queries whet
80. Change 1 Agilent 4338B Milliohm meter Operation Manual Manual Change Add TAR in Test Signal Frequency Accuracy Test Page 9 10 to the following Agilent Part No N A Test Signal Test Limits Test Result Measurement TAR Frequency Uncertainty Hz Hz Hz 1k 1 0 000018 k 57 Change 2 Add TAR in Resistance Measurement Accuracy Test Page 9 10 to the following Standard Test Signal Test Limits Test Measurement TAR Current Result Uncertainty ohm A ohm ohm ohm 1m 10m 0 024 m 0 0081 m 2 9 10m 10m 0 054 m 0 025 m 2 2 100 m 1m 0 45 m 0 18m 2 6 1 10m 0 0043 0 0020 2 1 10 10 u 0 044 0 017 2 6 100 1u 0 49 0 15 3 3 1k 10 u 9 3 0 0019 k 5 0 10 k 1u 540 0 025 k 21 9 Copyright 2008 Agilent Technologies Change 1 Change the Measurement Uncertainty value of Test Signal Frequency Accuracy Test Page 9 10 to the following Change 2 Change the Measurement Uncertainty value of Resistance Measurement Accuracy Test Page 9 10 to the following Agilent 4338B Milliohmmeter Operation Manual Manual Change Test Signal Test Limits Test Result Measurement Frequency Uncertainty Hz Hz Hz 1k 1 0 000018 k Agilent Part No N A Standard Test Signal Test Limits Test Measurement Current Result Uncertainty ohm ohm ohm ohm 1m 10m 0 024 m 0 0081 m 10 m 10m
81. Data Transfer Format Data Transfer Format ASCII Format Numeric data is transferred as ASCii byte in lt NR1 gt integer lt NR2 gt fixed point or lt NR3 gt floating point format as appropriate The numbers are separated by commas as specified in the IEEE 488 2 standard lt digit gt UTE Figure 5 8 NR1 Format lt digit gt Figure 5 9 NR2 Format lt digit gt Figure 5 10 NR3 Format For example expression of 1000 are 1000 lt NR1 gt format 1000 0 lt NR2 gt format 1 0E3 lt NR3 gt format GPIB Reference 5 41 Data Transfer Format 4338B REAL Format lt num digits gt lt num_bytes gt Yonn Sannn 1 byte 1 byte 8 bytes Figure 5 11 Real Data Format LA0E5008 lt data bytes gt lt new line gt END This data field is initiated by a unique code the number sign The second byte lt num_digit gt designates the number of the bytes for the lt num_bytes gt lt num_bytes gt designates lt data_bytes gt length new line END is the response message terminator lt data_bytes gt contains the data in the IEEE 754 floating point numbers of 64 bits This is the same data format used by the HP Technical computers such as the HP 9000 series 200 300 computers SIGN PART FRACTION PART 1 bit 52 bits rh m
82. ED is displayed Sec High Sec Low Primary and Secondary comparator limit Key The comparator limit keys set the comparator high and low limit values which decides the comparator s PASS or FAIL response If E is pressed the primary parameter s Sec Higl a is pressed the secondary Hish lower higher limit entry menu is displayed If a a a parameter s lower higher limit entry menu is displayed You cannot set the limit values to OFF from the front panel keys but you can by using GPIB commands See CALCulate Subsystem in Chapter 5 Left Down Arrow Key and Right Up Arrow Key These keys serve the following functions m While 4338B is displaying several items these keys are used to select a selected item blinks continuously adjacent items in the list selects the next item and the selects the previous item 0 1 9 minus point Key 0 DEE O C 8 These keys are used to enter the numeric values of the 4338B s settings Enter Key B The enter key terminates data input or setting value and returns to the measurement menu BLUE Shift Key The BLUE Shift key is a toggle action key which activates the secondary functions whose labels are printed above the keys For example Short pressing instructs the instrument to display the SHORT correction menu The BLUE shift key function is cleared by a single execution of a shifted function or by pressing the BLUE shif
83. Electrical Characteristics Output Signals Each DC output is isolated using open collector output opto isolators The output voltage of each line is set by pull up resistors on the main board The pull up resistors are connected to an externally applied dc voltage The electrical circuits of the dc isolated outputs are divided into two types See Table B 1 A simplified diagram of the output signals is shown in Figure B 1 for comparison signals and Figure B 2 for control signals Table B 1 Handler Output Electrical Characteristics Output Signals Voltage Output Maximum External Voltage Rating Current Circuit Common Low High Comparison Signals PHI PIN PLO lt 0 5 V 5 to 24 V 6 mA EXT DCV1 SHI SIN SLO COMI OVVOL or N C Control Signals ALARM lt 0 5 V 5to 15 V 5 mA EXT DCV2 INDEX COM2 EOM Handler Interface Installation B 1 Electrical Characteristics 4338B A1 Main Board Handler Interface Connector TN lt EXT DCV1 Pull up Resistors q PHI PIN PLO SHI SIN SLO lt JOVVOL lt COM1 Figure B 1 Handler Interface Comparison Output Signals Diagram B 2 Handler Interface Installation 4338B Electrical Characteristics A1 Main Board Handler Interface Connector ON lt EXT DCV2 Resistor
84. ISPR 11 1990 EN 55011 1991 Group 1 Class A Complies with EN 6 1000 3 3 1995 IEC 1000 3 3 1994 Complies with EN 50082 1 1992 IEC 801 2 1991 4 kV CD 8 kV AD Complies with EN 50082 1 1992 IEC 801 3 1984 3 V m Complies with EN 50082 1 1992 IEC 801 4 1988 0 5 kV Signal Lines 1 kV Power Lines This ISM device complies with Canadian ICES 001 Cet appareil ISM est conforme 4 la norme NMB 001 du Canada m Dimensions approximately 320 m Weight approximately 4 5 k 8 6 General Information W by 100 H by 300 D mm 8 4338B Supplemental Performance Characteristics The supplemental performance characteristics are listed below These characteristics are not specifications but are typical characteristics included as supplemental information for the operator m Test Signal Level Accuracy 10 0 2 pA Measurement Range Measurement Range when Contact Check is OFF Parameter Measurement Range X Z 10 y to 100 kQ L 10 y to 10H 0 1 180 to 180 Measurement Range when Contact Check is ON Parameter Measurement Range X Z 10 y to 10 KQ L 10 y to 1 H 0 1 180 to 180 m Continuous Memory Duration 72 hours O 23 5 C m Measurement Time The following table shows typical measurement times Mode Analog Digital Total Measurement Computation Short 27 7 34 Medium 63 7 70 Long 890 10 900
85. If the current through the DUT is I when test voltage V is applied across the DUT the DUT s impedance Z is expressed by V Za I Impedance Z contains a real and an imaginary part Figure 3 9 shows vector representation of impedance Imaginary Axis tj 4 Z R ix I726 Do Z RX x R Z cos izi X Z sin 8 IZl R X 6 9 tar 4 Real Axis R L8003012 Figure 3 9 Vector Representation of Impedance 3 20 Function Reference 4338B Theory of Operation In Figure 3 9 R resistance X reactance Z magnitude of impedance 0 phase of impedance The 4338B measures the DUT s impedance Z which is a vector value and gives the result in the following measurement parameters R resistance X reactance L inductance Z Z magnitude of impedance phase of impedance These parameters represent the DUT s electrical characteristics as Figure 3 10 R jX MN Z R jyx 2140 IZ R OS 0 tan E R JoL Z R jol 76 My 0000 Where o 278 f f test frequency IZ R ol 9 tan e LD0ES013 18003013 Figure 3 10 Relationship between Measurement Parameters Function Reference 3 21 Theory of Operation 4338B Test Signal Level Actual Signal Level across DUT Most components have impedance characteristics that are dependent on the applied signal level So the test level setting must be set appropriate for
86. Interface output are following GPIB output lt Comp2 gt 0 Handler output SHI signal isn t detected Overload Over Voltage No Contact Operations C 3 Error Messages This section lists the error messages that are displayed on the 4338B s LCD display or transmitted by the instrument over GPIB in numerical order Messages 1 Overload Over Voltage No Contact Operations 4338B Instrument Errors 11 ADC FAILURE The AD converter failed Contact your nearest Agilent Technologies office 2 ROM TEST FAILED Contact your nearest Agilent Technologies office 13 RAM TEST FAILED Contact your nearest Agilent Technologies office 14 EEPROM R W FAILED Contact your nearest Agilent Technologies office 16 USER DATA LOST Correction data and instrument settings saved in EEPROM have been lost Contact your nearest Agilent Technologies office 16 PREV SETTING LOST Instrument settings in the backup memory have been lost The instrument keeps instrument settings in backup memory for 72 hours after being turned OFF 17 SAVE FAILED Contact your nearest Agilent Technologies office 18 RECALL FAILED No instrument setting saved in the EEPROM 19 PRINTER NO RESPONSE Something is wrong check the following items o Check that the power code is connected to your printer o Check that the GPIB cable is connected between the printer and the instrument m Check that the printer is set to Listen Always 20 Al
87. LC 1 2 LIM BEEP COND SYST BEEP SYST BEEP STAT For example to set the beeper mode to emit a beep when the comparison result is PASS OUTPUT 717 CALC1 LIM BEEP PASS Remote Operation 4 7 To Set Up the 4338B 4338B To Use Comparator Function The following commands control the comparator function CALC 1 2 LIM CLE CALC 1 2 LIM FAIL CALC 1 2 LIM LOW CALC 1 2 LIM LOW STAT CALC 1 2 LIM UPP CALC 1 2 LIM UPP STAT m CALC 1 2 LIM STAT 1 2 shows that one of the two numbers is attached to the root mnemonic 1 means the primary parameter and 2 means the secondary parameter For example to set the limit values for the primary parameter and to enable the comparator function OUTPUT 717 CALC1 LIM LOW 1E 2 UPP 1E 1 OUTPUT 717 CALC1 LIM STAT ON To Display a Deviation Measurement The following commands displays a deviation measurement DATA CALC 1 2 MATH EXPR NAME CALC 1 2 MATH EXPR CAT m CALC 1 2 MATH STAT 1 2 shows that one of the two numbers is attached to the root mnemonic 1 means the primary parameter and 2 means the secondary parameter For example to set the reference values using the measured values and to calculate the absolute value of deviation for the primary parameter OUTPUT 717 FETC ENTER 717 s d1 d2 OUTPUT 717 DATA REF1 d1 OUTPUT 717 CALC1 MATH EXPR NAME DEV OUTPUT 717 CALC1 MATH STAT ON To Wait Until Previously Sent Commands
88. N He G Rs Ls 5 Rs JoLs WWA e T G Yo Got w Co Co Go ZouT lp 4 a Test Fixture Residuals He Rs Ls Zs Co Go SHORT o lt b SHORT Measurement Zs Zur ZS Zour gt gt 1 Zy Zs Yo Mm Yo our When Zour lt lt 1 Yo Zour EZm ZS c Correction Formula LD0E7001 L8007001 Figure 7 1 SHORT Correction Measurement Basics 7 1 Dry Circuit Loop 4338B The measured impedance Zm contains the measurement errors Figure 7 1 a shows the existence of residual impedance between the UNKNOWN terminals and the DUT which is due to the test fixture If the DUT s impedance Zpur is low the test fixture s residual impedance has more effect on a measurement than does the fixture s stray admittance The 4338B has a SHORT correction function to cancel the residual impedance of the test fixture so low impedance devices can be accurately measured Figure 7 1 b describes the SHORT measurement technique which measures the residual impedance of the test fixture Zs A SHORT measurement is performed by connecting the test electrodes directly together or connecting a shorting device to the electrodes The residual impedance of the shorting device must be significantly lower than the DUT s impedance otherwise it will directly affect the measurement results After the SHORT measurement is
89. NSe AVERage COUNt command only accepts one parameter so receiving AVER COUN 2 4 is not allowed 109 Missing parameter Fewer parameters were received than required for the header for example the SENSe AVERage COUNt command requires one parameter so receiving only AVER COUN is not allowed 112 Program mnemonic too long The header contains more than twelve characters see IEEE 488 2 7 6 1 4 1 113 Undefined header The header is syntactically correct but it is undefined for the 4338B for example XYZ is not defined for the 4338B 121 Invalid character in number An invalid character for the data type being parsed was encountered for example an alpha character in a decimal numeric or a 9 in octal data Messages 3 Overload Over Voltage No Contact Operations 4338B 123 Numeric Overflow The magnitude of the exponent was larger than 32000 see IEEE 488 2 7 7 2 4 1 124 Too many digits The mantissa of a decimal numeric data element contains more than 255 digits excluding leading zeros see IEEE 488 2 7 7 2 4 1 128 Numeric data not allowed Legal numeric data element was received but the 4338B does not accept it in this position for a header 131 Invalid suffix The suffix does not follow the syntax described in IEEE 488 2 7 7 3 2 or the suffix is inappropriate for the 4338B 138 Suffix not allowed A suffix was encountered after a numeric element which does not allow suffixes
90. ORT correction menu is displayed Shift 0001323 ShortMeas MeasVal Exit AVG R 12 345nQ LVL AUTO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger ange Level In Chk Only Lock 3 Press or until ShortMeas blinks and press B The SHORT correction is in progress and the following message is displayed Shift LD001351 Short Correction AVG R 12 345nQ LVL AUTO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger ange Level In Chk Only Lock After a short time the 4338B will display the message Short Correction Complete and return to the normal display If the SHORT impedance Zs is NOT less than 10 Q which is unsuitable for use as the SHORT correction data the 4338B will display the following warning message 1 20 Getting Started 4338B To Perform a SHORT Correction Shift 0001322 R 12 345m Q LVL AUTO WARNING Out of Limit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Cl Only Lock This is only a WARNING the SHORT correction data will still be used However it is better to confirm that the test fixture s connection to UNKNOWN terminals is good and confirm that the procedure used to perform the SHORT correction When
91. OVVOL or Over Voltage The test voltage across the DUT is exceeding 20 mV and source voltage output goes to O V N C No Contact Contact check failed 42 ALARM Alarm This signal is asserted on POWER DOWN of the 4338B The signal length is 200 ms 43 ANDEX Index This signal is asserted when an analog measurement is complete and the 4338B is ready for the next DUT to be connected to the UNKNOWN terminals The measurement date however is not valid until EOM is asserted 44 EOM End of Measurement This signal is asserted when the measurement data and comparison results are valid 45 COM2 Common for EXT DCV2 46 COM2 49 GND Ground tied to chassis 50 GND 1 The slash means that the signal is asserted when low Function Reference 3 17 Rear Panel 4338B EXT_TRIG INDEX Previous Data Valid ate invalid Data Valid T1 Trigger Pulse Width T2 Trigger Wait Time After EOM Output Figure 3 7 Timing Diagram GPIB Interface GPIB Interface is used for remote control of the 4338B using the General Purpose Interface Bus GPIB GPIB is an instrument interface standard which supports worldwide standards IEEE 488 1 IEC 625 IEEE 488 2 and JIS C1901 The GPIB interface allows the instrument to be controlled by an external computer that sends commands or instructions to and receives data from the instrument via GPIB It also defines handshaking addressing and the gene
92. Power Requirements 1 1 1 wk ee a a A a ps Oe ps ps EOOD Ne WYNN H Roa 1 Roa 3 n q T iw Turning ON the 4338B 0 0 00 a 1 13 Using Front Panel Keys 2 ee ee 1 14 Direct Execution Keys 2 1 1 14 Toggle Keys 2 1 ww a a a 1 14 Selection Keys 1 14 Value Setup Keys 2 2 a a a 1 15 Numeric Keys 1 e 1 15 Maximum and Minimum Keys 00 0 2 00 0 eee 1 16 Left Down and Right Up Arrow Keys 0 2 0008 eae 1 17 Back Space Key 2 6 6 a e 1 17 N To Perform a Measurement 2 ee ee a 1 18 Connecting a Test Fixture 2 a a a 1 19 Using the 16338A Cl o 1 19 To Reset 4838B8B8B_ A 1 20 To Perform a SHORT Correction 1 20 To Select Measurement Parameter 1 1 ee ee e 1 22 To Select Auto Measurement Mode Cl A 1 22 To Select Test Signal Level e 1 22 To Select Measurement Range 1 23 Auto Hold Range Mode Ce 1 23 Measurement Range Setting 1 23 Contents 1 2 Operating the 4338B Introduction 2 1 Measurement Configuration e 2 2 To Select the Measurement Time Mode Ve 2 2 To Set the Averaging Rate 2 2 To Set the Trigger Delay or Source Delay Time A 2 2 To Set the Contact Check o 2 3 To Set the Beeper Mode Ce ee 2 4 To Save and Recall Instrument Settings Ce ee 2 4 Making a Measurement 2 1 1 1 a ee 2 6 To Trigger a Measurement 2 6 To Use the Comparator Function 2 7
93. S Sets or queries measurement time to Short 0 035 s Medium 0 07 s or Long 0 900 s lt numeric_value gt is numeric 0 0035 0 07 or 0 900 s The following suffixes can be used with lt numeric_value gt S s MS ms GPIB Reference 5 23 SENSe Subsystem 4338B Query response is lt numeric_value gt lt NR2 gt format SENSe FIMPedance CONTact VERify ON OFF 1 0 Sets or queries if the contact check function is enabled The contact check function monitors if the DUT is properly connected to the test electrodes ON 1 enables contact check OFF O disables contact check Query response is 1 0 Default setting is OFF SENSe FIMPedance RANGe AUTO ON OFF 1 0 Sets or queries if the Auto range mode is enabled In this mode the 4338B automatically selects the optimum measurement range ON 1 The Auto mode is ON OFF O The Auto mode OFF and the measurement range is in the Hold mode Query response is 1 O SENSe FIMPedance RANGe UPPer lt numeric_value gt MOHM OHM KOHM Sets or queries the measurement range Available measurement ranges are 1 mQ 10 mQ 100 mQ 1 Q 100 100 9 1 KQ and 10 kQ which are limited by the test level setting See Figure 3 2 lt numeric_value gt is numeric 1 0x108 1 0x10 1 0x10 1 0 1 0x10 1 0x10 1 0x 10 1 0x10 0 MAXimum 10 kQ MINimum 1 mQ UP move to upper range DOWN move to lower range Following suffixes can be used with lt
94. Sets or queries if the comparator output to the beeper is enabled ON 1 enables comparator output to the beeper as defined by CALCulate 1 2 LIMit BEEPer CONDition command OFF O disables comparator output to the beeper When you enable the beeper function the SYSTem BEEPer STATe command is automatically set to ON Query response is 1 0 Note The comparator output states of both parameters is linked together So the i CALCulate 1 2 LIMit BEEPer command toggles the comparator function of Y both parameters ON or OFF CALCulate 1 2 LIMit CLEar Clears the data which is reported by CALCulate 1 2 LIMit FAIL command no query CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter CALCulate 1 2 LIMit FAIL Returns the comparison result of the selected parameter query only CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter Query response is 110 Where 1 comparison result is FAIL 0 comparison result is PASS CALCulate 1 2 LIMit LOWer DATA lt numeric_value gt Sets or queries the lower limit value of the selected channel CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter lt numeric_value gt is numeric 9 999x 10 to 9 999x10 4 MAX imum 9 999x 1014 MINimum 9 999x 1014 Query response is lt numeric_value gt in lt NR3 gt format 5 12 GPIB Reference 4338B CALCulate Subsystem
95. Shift Short Key a SHORT correction measurement to get correction data 27 5 Key 28 7 Key Shift Minimum Key enters the minimum value when setting a parameter 29 8 Key Shift Maximum Key enters maximum value when setting a parameter 30 6 Key 31 9 Key 32 BLUE Shift Key activates secondary functions printed above the front panel keys Note In this manual the BLUE shift key is expressed as ga the top of the key is not labeled with blue Y Getting Started 1 5 Overview 4338B 33 Engineering Unit Key enters the engineering units p n y m k and M 34 Back Space Key erases the last entered character when entering numeric values 35 Enter Key terminates key entry 1 6 Getting Started 4338B Overview Display Chapter 3 This section introduces the display For a detailed description of each display field see k Shift L0001101 PN R 12 345mQ X 0 1000m Q LVL 1 mA v v vv vv vvv AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock a b c d ef gh i j 1 Character Display Area displays the measurement result setting data and instrument messages 2 Annunciator v points to the currently selected instrument setting The label pointed to by the annunciator is the current setting The annunciator labels are as follows a Measurement time shows the selected
96. The blinking item is the one currently selected By using D or the selection key itself the selected blinking items can be changed For example to perform the self test 1 Press E Exit is blinking Shift 10001306 R 12 345mQ LVL AUTO Beep Line Svc Test Exit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Press to blink Test 3 Press B The self test will start immediately After the test is finished the 4338B will display any existing error code and return to the menu 4 Select Exit and press B to exit the menu 1 14 Getting Started 4338B Value Setup Keys Pressing the value setup keys displays the parameter entry display and prompts for you to enter a value For example 1 Press and the 4338B displays Using Front Panel Keys Shift LD001308 R 12 345mQ Average LVL AVG gt AUTO Short Med Long Int Man Ext Hold Hold Meas Time Trigger Range Level Talk Rmt Key Measurement Settings Only Lock The displayed value can be altered by using the following keys Numeric Keys Maximum and Minimum Keys Left Down and Right Up Arrow Keys Back Space Key Numeric Keys Some commands use numeric parameters A numeric parameter is the actual value used by the 4338B For example to set the averaging rate to
97. The following commands reset the 4338B m RST m SYST PRES Note RST resets the trigger system also Y For example OUTPUT 717 RST To Set the LINE Frequency The following command sets the LINE frequency m SYST LFR For example to set the LINE frequency to 50 Hz OUTPUT 717 SYST LFR 50 To Perform the SHORT Correction The following commands perform the SHORT correction m SENS CORR COLL STAN2 m SENS CORR For example to perform the SHORT correction OUTPUT 717 SENS CORR COLL STAN2 OUTPUT 717 OPC ENTER 717 A To Select the Measurement Parameter The following commands select the measurement parameter m CALC1 FORM m CALC2 FORM For example to select the R only mode OUTPUT 717 CALC1 FORM REAL OUTPUT 717 CALC2 FORM NONE For example to select the R X mode OUTPUT 717 CALC1 FORM REAL OUTPUT 717 CALC2 FORM IMAG Remote Operation 4 5 To Set Up the 4338B 4338B For example to select the R L mode OUTPUT 717 CALC1 FORM REAL OUTPUT 717 CALC2 FORM LS For example to select the Z Z mode OUTPUT 717 CALC1 FORM MLIN OUTPUT 717 CALC2 FORM PHAS To Select the Auto Measurement Mode The following commands select the auto measurement mode m SOUR CURR RANG AUTO m SENS FIMP RANG AUTO For example OUTPUT 717 SOUR CURR RANG AUTO ON OUTPUT 717 SENS FIMP RANG AUTO ON To Select the Measurement Range The following commands select the measurement ra
98. To Display Deviation Data 2 8 To Set the Reference Value o 2 8 To Select the Deviation Display Mode 2 9 To Set the Display Mode and Display Digits 2 10 To Change the Measurement Settings Display Mode 2 11 To Lock Out the Front Panel Keys 2 12 To Select the Local Mode 2 12 To Set the GPIB Address 2 12 To Print Measurement Data 2 12 To Test the 4338B 2 13 To Perform a Self Test 2 13 To Test the Front Panel Keys Functionality 2 13 If You Have a Problem Loe eee 2 14 If the Display is Blank and the 4338B Appears Dead o 2 14 If an Error Message is Displayed 2 14 If the 4338B does not Accept Any Key Input 2 14 3 Function Reference Introduction Ce a 3 1 Front Panel aaa A 3 2 Display Ce 3 2 LINE Switch 2 a a a 3 3 Chassis Terminal 2 1 we 3 3 ZX UNKNOWN Terminals ee 3 3 aie Cort So Ce 3 3 Level Key cai o o 3 4 Measurement Paramotor Key CE 3 5 Deviation Mode Key qa pen Bo Core a a ea a e a e e 3 5 Measurement Time Key E Ce 3 5 3 5 Show Setting Key fixa Display Mode Key cm Average Key a CA 3 6 Auto Hold Nm Key EE E 3 6 Range Setup Key fz Cl e 3 6 Trigger Key f cc a aa aa aa aa 3 6 Trigger Mode Key EJ ooo 3 7 Delay Key Ml o a 3 7 Contents 2 Local Key 5 Ce Ce e o 3 8 Address Key oa 3 8 Save Key pa A 3 8 Recall Key frei fai Ce CA o 3 9 Primary and Secondary comparator limit Key E 5 Ce 3 9
99. V Open Close Open 9 Reinstall the Al main board the A2 CPU board and the cover Handler Interface Installation B 9 Overload Over Voltage No Contact Operations Table C 1 shows the summary of operations when the 4338B detects OVLD Overload OVVOL Over Voltage or N C No Contact Table C 1 OVLD OVVOL N C Condition Condition Display Handler GPIB Output Solutions Output Data Mode Comprtr utpu Mode OVLD OVLD High PHI and SHI lt State gt 1 Select an Overload lt Data gt 9 9999E13 approptiate lt Comp gt 2 measurement range OVVOL OVVOL High PHI and SHI lt State gt 4 Change to the Over Voltage and OVVOL or lt Data gt 9 9999E13 appropriate N C lt Comp gt 2 signal level N C N C N C OVVOL or lt State gt 2 Cancel the bad No Contact N C lt Data gt 9 9999E13 contact lt Comp gt 8 between the DUT and the contact pin 1 Refer to the FETCh Command in Chapter 5 2 Measurement Status 0 Normal 1 Overload 2 No Contact 4 Over Voltage 3 Comparison result 1 IN 2 HIGH 4 LOW 8 No Contact 4 OVVOL signal or N C signal is detected from the Pin No 38 in the 4338B Handler Interface Caution When the measurement parameter R is selected GPIB output and Handler Interface output are following GPIB output lt Comp2 gt 0 Handler output SHI signal isn t detected Overload Over Voltag
100. VG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Select Beep using or E and press B Shift 10002309 R 12 345mQ X 0 1000m Q LVL AUTO Beep Off Fail Pass AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 3 Select the desired mode Fail Pass or Off using or 59 and press B 4 Select Exit using or E and press B to exit To Save and Recall Instrument Settings The 4338B can save and recall the instrument s settings m To save the current settings Save 2 Enter the register number 0 to 9 that you want to save the settings into 1 Press Shift LD002302 R 12 345m0 X 0 1000m O LVL AUTO Save 0 9 0 AVG 11 Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level 0 Chk Only Lock 3 Press B to save Note Record the register number that you saved into for further reference Y 2 4 Operating the 4338B 4338B Measurement Configuration a To recall a setting Sa 1 Press fen 2 Enter the register number 0 to 9 that you want to recall the settings from Shift LD002303 R 12 345m0 X 0 1000m Q LVL AUTO Recall 0 9
101. When you want to exit without changing value just press B 2 8 Operating the 4338B 4338B Making a Measurement To Select the Deviation Display Mode To select the deviation display mode Off A or A 3 To select the primary parameter deviation display mode press or to select Pri and press B Shift LD002355 R 12 345m 9 X 0 1000m amp LVL AUTO Off AABS A AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Cl Only Lock Press or to select Off AABS or A and press B 4 To select the secondary parameter deviation display mode press or to select Sec and press B The same menu as the primary parameter is displayed and you can select the mode Off AABS or A in the same manner as the primary parameter Operating the 4338B 2 9 Making a Measurement 4338B To Set the Display Mode and Display Digits Disp Mode If you press the display mode selection menu appears Select the desired mode using ing or Data displays the measurement data Comprtr displays the comparator results Off turns the display OFF and press B To exit from this menu select Exit and press B Shift LD002353 R 12 345mQ X 0 1000m Q LVL AUTO Off Data Comprtr Digit Exit AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time
102. al incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products For any assistance contact your nearest Agilent Technologies Sales and Service Office Addresses are provided at the back of this manual vii 4338B Typeface Conventions Bold Italics Computer SOFTKEYS viii Boldface type is used when a term is defined For example icons are symbols Italic type is used for emphasis and for titles of manuals and other publications Italic type is also used for keyboard entries when a name or a variable must be typed in place of the words in italics For example copy filename means to type the word copy to type a space and then to type the name of a file such as filet Computer font is used for on screen prompts and messages Labeled keys on the instrument front panel are enclosed in 1 Softkeys located to the right of the CRT are enclosed in Contents 1 Getting Started Introduction 2 a a a a a Overview aoaaa a E a Features Front Panel 2 2 aa Display 2 ee a Rear Panel 2 1 1 a Incoming Inspection 2 a a a a a a Providing clearance to dissipate heat at installation site Instruction for Cleaning ooa a a Power Cable Ce e Preparation for Use 4 Ce A
103. ameter result measured secondary parameter result and comparator sorting result Line 340 If the Comp flag value is not 1 the comparator function is OFF reads out the measurement status measured primary parameter result and measured secondary parameter result Lines 390 to 410 Displays the measurement status measured primary parameter result and measured secondary parameter result Line 430 to 440 If the Comp flag value is 1 the comparator function is ON displays the comparator sorting result Line 460 If the Comp flag value is not 1 the comparator function is OFF displays Comparator OFF 4 18 Remote Operation 4338B 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 Reading Out Measured Result DIM Buff 9 REAL Pri_para Sec_para INTEGER Meas_stat Comp1 Comp2 INTEGER Comp_flag ASSIGN Agt4338b TO 717 OUTPUT Agt4338b FORM ASC OUTPUT Agt4338b INIT CONT ON OUTPUT Agt4338b TRIG SOUR EXT OUTPUT Agt4338b CALC LIM STAT ENTER Agt4338b Comp flag SRQ setting OUTPUT Agt4338b STAT OPER ENAB 16 OUTPUT Agt4338b SRE 128 OUTPUT Agt4338b CLS OUTPUT Agt4338b OPC ENTER Agt4338b Buff Triggering and data read ON INTR 7 GOTO Meas_end
104. ange mode Press G and the Hold Range annunciator v is alternately displayed and turned off In Hold range mode the Hold Range annunciator is displayed The Auto range mode is active when the Hold Range annunciator is not displayed Measurement Range Setting Range Setup 1 Press Cai Measurement range menu is displayed Shift 0001317 R 12 345mQ X 0 1000m Q LVL AUTO Range 100m AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level Cl Only Lock 2 Press or until the desired range is displayed 3 Press B Note You may find some measurement range cannot be set because the 4338B has i test signal level limitations for each measurement range setting For details see Y Figure 3 2 Getting Started 1 23 Operating the 4338B Introduction This chapter provides step by step instructions for using the 4338B Milliohmmeter This chapter includes the following sections Measurement Configuration m Making a measurement a Testing the 4338B m If You Have a Problem Refer to Chapter 3 for the description of each front panel key function Operating the 4338B 2 1 Measurement Configuration 4338B Measurement Configuration This section discusses the 4338B s general configuration topics that apply to many or all measurement functions To Select the Measurement Time Mode The current
105. ange without notice This document contains proprietary information that is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of the Agilent Technologies Agilent Technologies Japan Ltd Component Test PGU Kobe 1 3 2 Murotani Nishi ku Kobe shi Hyogo 651 2241 Japan Copyright 1996 1997 1998 2000 2001 2002 2003 Agilent Technologies Japan Ltd 4338B Manual Printing History The manual s printing date and part number indicate its current edition The printing date changes when a new edition is printed Minor corrections and updates that are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated March 1996 anaana aaarnas First Edition part number 04338 90010 April 1997 cel Second Edition part number 04338 90020 June 1998 ooo Third Edition part number 04338 90030 January 2000 naana aaaea raa Fourth Edition part number 04338 90030 January 2001 anaana Fifth Edition part number 04338 90030 September 2002 nnana 0 0 00 Sixth Edition part number 04338 90030 March 2008 2 2 00 0 00 Seventh Edition part number 04338 90040 4338B Safety Summary The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply wi
106. arator sorting result If the Comp flag value is not 1 the comparator function is OFF reads out the measurement status measured primary parameter result and measured secondary parameter result Displays the measurement status measured primary parameter result and measured secondary parameter result If the Comp_flag value is 1 the comparator function is ON displays the comparator sorting result If the Comp flag value is not 1 the comparator function is OFF displays Comparator OFF 4338B 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 Reading Out Measured Result DIM Buff 9 REAL Pri_para Sec_para INTEGER Meas_stat Comp1 Comp2 INTEGER Comp_flag Cond_reg ASSIGN Agt4338b TO 717 OUTPUT Agt4338b FORM ASC OUTPUT Agt4338b INITICONT ON OUTPUT Agt4338b TRIG SOUR BUS OUTPUT Agt4338b CALC LIM STAT ENTER Agt4338b Comp flag Triggering and data read REPEAT OUTPUT Agt4338b STAT OPER COND ENTER Agt4338b Cond_reg UNTIL BIT Cond_reg 5 OUTPUT Agt4338b TRG IF Comp flag 1 THEN ENTER Agt4338b Meas stat Pri para Sec para Comp1 Comp2 ELSE ENTER Agt4338b Meas stat Pri para Sec para END IF Display results PRINT USING 15A X D Meas status Meas stat PRINT USING 15A X
107. are Completed The following commands make the 4338B wait until the previously sent commands are completed m 0PC m 0PC m WAI For example to wait until the OPEN correction is completed OUTPUT 717 SENS CORR COLL STAN2 Perform SHORT Correction OUTPUT 717 OPC Wait for Open Correction completed ENTER 717 A 4 8 Remote Operation 4338B To Set Up the 4338B To Get the Current Instrument Settings The following command gets the current instrument settings m LRN For example DIM A 1000 OUTPUT 717 LRN ENTER 717 A PRINT A To Save and Recall Instrument Settings The following commands save and recall instrument settings m SAV m RCL To save the instrument settings to register no 1 OUTPUT 717 SAV 1 To recall the instrument settings from register no 1 OUTPUT 717 RCL 1 Remote Operation 4 9 To Trigger a Measurement 4338B To Trigger a Measurement The following commands are used to trigger measurements from an external controller and to handle the 4338B s trigger system Refer to Trigger System in Chapter 5 for the information about the 4338B s trigger system m TRIG m TRIG SOUR m INIT m INIT CONT m ABOR m TRG m FETC Group Execution Trigger GET Follow the procedure below to perform successive measurements automatically initial setup 1 Set the trigger mode to the internal trigger with the TRIG SOUR command 2 If the trigger system has not started
108. asurement 4338B To Display Deviation Data The A before the measurement parameter on the LCD display tells that the displayed value for the parameter is the deviation value To Set the Reference Value 1 Press Ex The following menu is displayed Shift LD002310 Pri Sec ARefEnt Exit AVG R 12 345m Q X 0 1000m Q LVL AUTO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Press or to select ARefEnt and press B Shift LD002354 AREF Primary AVG R 12 345m Q X 0 1000m Q LVL AUTO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock m To set by measuring the reference DUT a Press regardless of the trigger mode and the primary parameter is measured Press B to set the measurement value as the primary reference b Then the secondary parameter reference setting menu ARef Secondary is displayed Press to measure the secondary parameter and press B to set the measurement value as the secondary reference m To set by entering a value a Enter the primary parameter reference value using the numeric keys and press 5 When you want to exit without changing value just press B b Enter the secondary parameter reference value using the numeric keys and press 5
109. ated test instruments when performance testing the 4338B Equipment which equals or surpasses the key required specifications of the recommended equipment may be used as a substitute Calculation Sheet The calculation sheet is used as an aid for recording raw measurement data and for calculating the performance test results The performance test procedure gives the test sequence for performing a test the complete set of measurement data are recorded on the calculation sheet the results are calculated using the equations given on the calculation sheet and the results are transcribed to the performance test record The procedure for using the calculation sheet is 1 Photo copy the calculation sheet 2 Follow the performance test procedure and record the measurement value s the 4338B s reading etc into the specified column on the calculation sheet 3 Calculate the test result using the appropriate equation given on the calculation sheet and record the test result into the Test Result column of the performance test record 9 2 Maintenance 4338B Performance Tests Performance Test Record Record the performance test results in the test record at the end of this chapter Photocopy the test record and use the photocopy The test record lists all test specifications their acceptable limits and measurement uncertainties for the recommended test equipment Test results recorded during incoming inspection can be used for comparison
110. ber in Appendix A Power Cord Receptacle The Power Cord Receptacle is used to plug in the power cord Power Code The 4338B is equipped with a three conductor power cord that when plugged into the appropriate AC power receptacle grounds the instrument The offset pin on the power cord is the safety ground Function Reference 3 15 Rear Panel 4338B Handler Interface Specification Output signal Negative true open collector opto isolated Decision Output Primary parameter Comparator High In Low Secondary parameter Comparator High In Low Contact check failed N C Voltage across the DUT exceeds 20 mV and source output goes to O V Index Analog measurement complete Measurement complete Full measurement complete Alarm Notification that a momentary power failure was detected Input Signal Opto isolated Keylock Front panel keyboard lockout External Trigger Pulse width gt 1 ps Note The comparator output signals High In Low and the control signals INDEX i EOM are available when the comparator function is ON And the contact Y check output signal N C is available when both the comparator and contact check functions are ON 15003006 Figure 3 6 Pin Assignment For Handler Interface Connector 3 16 Function R
111. bsystem commands query only This query needs the parameter BUF1 BUF2 which is the name of the data buffer to be read So the query form is DATA DATA BUF1 or DATA DATA BUF2 Reading the data buffer returns its pointer to the head of the buffer After that data will be stored starting from the head of the buffer Query response is lt sell gt lt sel2 gt lt setn gt Where lt seti gt data set of the first measured point lt set2 gt data set of the second measured point lt sein gt data set of the last measured point n is specified by DATA POINts command Every data set contains the following data lt stat gt lt data gt lt comp gt Where lt stat gt measured status 0 normal 1 overload 2 no contact 4 over voltage lt data gt measured data lt comp gt comparison result 0 OFF 1 In 2 High 4 Low 8 no contact DATA FEED BUF1 BUF2 lt data_handle gt Sets or queries whether or not measurement data is fed into data buffer DATA FEED query requires the parameter BUF1 or BUF2 which is the name of the data buffer So the query form is DATA FEED BUF1 or DATA FEED BUF2 lt data_handle gt is CALCulatel set to feed data specified CALCulatel MATH command CALCulate2 set to feed data specified CALCulate2 MATH command null string set to feed nothing into data buffer At RST DATA FEED BUF1 BUF2 is set to Query response is
112. ce delay time 3 7 GPIB command 5 30 how to set 2 2 4 7 SOURce subsystem 5 25 specifications 8 2 SPOLL 4 23 SRE 4 23 5 32 SRE 5 32 standard event status register 5 36 status 4 23 5 34 status byte register 5 35 STATus OPERation CONDition 4 23 5 26 STATus OPERation ENABle 4 23 5 26 STATus OPERation EVENt 4 23 5 26 STATus PRESet 4 23 5 27 STATus QUEStionable CONDition 4 23 5 27 STATus QUEStionable ENABle 4 23 5 27 STATus QUEStionable EVENt 4 28 5 27 STATus subsystem 5 26 STB 4 23 5 33 supplemental performance characteristics 8 7 SYSTem BEEPer IMMediate 4 7 5 28 SYSTem BEEPer STATe 4 7 5 28 SYSTem LFRequency 4 5 5 28 SYSTem PRESet 4 5 5 29 SYSTem subsystem 5 28 Index 4 T talk only mode 2 12 3 8 test equipment 9 1 test leads extension 7 3 Test Signal Frequency Accuracy Test 9 4 test signal level 3 4 GPIB command 5 25 how to select 1 22 4 6 test signal level functional test 9 12 TRG 4 10 5 33 trigger 3 6 GPIB command 5 33 how to 2 6 how to trigger 4 10 TRIGger 5 30 TRIGGER 4 10 trigger delay time 3 7 GPIB command 5 30 how to set 2 2 4 7 TRIGger IMMediate 5 30 trigger mode 3 7 GPIB command 5 30 TRIGger SEQuencel DELay 4 7 5 30 TRIGger SEQuence1 IMMediate 4 10 5 30 TRIGger SEQuence1 SOURce 4 10 5 30 TRIGger SEQuence2 DELay 4 7 5 30 TRIGger subsystem 5 30 trigger system 5 39 Trig key 3
113. cific code entered into the queue in lieu of the code that caused the error This code indicates that there is no room in the queue and an error occurred but was not recorded 400 Query errors This is the generic query error that the 4338B cannot detect more specific errors This code indicates only that a query error as defined in IEEE 488 2 11 5 1 1 7 and 6 3 has occurred 410 Query INTERRUPTED A condition causing an interrupted query error occurred see IEEE 488 2 6 3 2 3 for example a query followed by DAB or GET before a response was completely sent 420 Query UNTERMINATED A condition causing an unterminated query error occurred see IEEE 488 2 6 3 2 2 for example the 4338B was addressed to talk and an incomplete program message was received by the controller 430 Query DEADLOCKED A condition causing an deadlocked query error occurred see IEEE 488 2 6 3 1 7 for example both input buffer and output buffer are full and the 4338B cannot continue 440 Query UNTERMINATED after indefinite response A query was received in the same program message after an query requesting an indefinite response was executed see IEEE 488 2 6 5 7 5 Messages 6 Index A ABORt 4 10 5 9 Adrs key 3 8 annunciator 3 2 Arrow key 3 9 ASCII 5 41 GPIB command 5 20 Auto Hold key 3 6 auto level 3 4 GPIB command 5 25 Auto Meas key 3 3 auto measurement 3 3 how to select 4 6 auto range 3 6 GPIB command 5 24
114. cked up settings are e Auto level mode e Measurement time e Test signal level e Averaging e Source delay e Trigger mode e Measurement parameter e Trigger delay e Deviation mode e Comparator ON OFF state e Deviation reference value e High and low limit value e Auto Hold range mode e Display mode e Measurement range setting Chassis Terminal The Chassis terminal is tied to the instrument s chassis N UNKNOWN Terminals These terminals are used to connect test fixtures or test leads for measuring a DUT The connector type is BNC Caution DO NOT apply a dc voltage exceeding 42 V to UNKNOWN terminals or the Y 4338B s input circuits will be destroyed Auto Meas Auto Measurement Key O The Auto Measurement key enables the Auto measurement function which allows the 4338B to measure a DUT automatically using the optimum measurement range and test signal level When the auto measurement function enabled the 4338B is set to the auto range mode see Auto Hold range Key Gay and auto level mode see Level Key f When the Auto measurement function is enabled the Auto Measurement indicator turns ON Note The Auto Measurement key doesn t disable the Auto measurement function i And the Auto measurement function is disabled when auto range or auto level Y is disabled Function Reference 3 3 Front Panel 4338B Level Key The level key sets the test signal level The available test
115. conds in 0 001 seconds steps m Source Delay Time 0 to 9 999 seconds in 0 001 seconds steps a Test Cable Length 2 meters maximum Measurement Range Parameter Measurement Range Contact Check R 10 y to 100 kQ Off 10 y to 10 kQ On 8 2 General Information 4338B Measurement Accuracy The following conditions must be met 1 Warm up time gt 15 min 2 Short correction has been performed Accuracy applies when X R lt 2 Multiply the accuracy by the following temperature induced error factors 18 C lt T lt 28 C x1 8 C lt T lt 18 C or 28 C lt T lt 38 C x 2 0 C lt T lt 8 C or 388 C lt T lt 45 C x 4 Where T is the temperature Specifications General Information 8 3 Specifications 4338B Table 8 1 Measurement Accuracy Rm Measurement Accuracy of reading mt J 9 Measurement Signal Current A ly 10 x 100 Im 10 m 100 k 0 001 R 0 85 Em 1565 gm el 10 L 0 4 Rm 1980 3500 001 R 0 35 1005001 2900 m 04 250 00 fim m ik 0 4 Rm 2000 170 001 R 350 001 R 0 85 Rm 2000 0 85 Rm 2000 04 000 EA 13 001 R 25 001 R 100 E 0 4 Rin 2000 0 4 Em 3000 100 001 R 17 001 R 35 001 R a a A afim PA
116. ction Ventilation Requirements Instruction for Cleaning Power Cable Preparation for Use Using Front Panel Keys Basic Operation Getting Started 1 1 Overview 4338B Overview 4338B Milliohmmeter is a precise reliable and high speed test tool for measuring low resistance Features Low and selectable test signal current 1 A to 10 mA Wide measurement range 10 O to 100 kQ 10 O resolution 1 kHz ac measurement High speed measurement 34 ms Built in comparator Auto measurement mode m Precise Low Resistance Measurement Contact failure of electro mechanical components in low current circuits is a key issue in determining these components reliability The 4338B offers selectable low level ac test signals 1 yA to 10 mA so now low current conditions can be characterized A high resolution of 10 Q allows you to determine the slightest differences in contact resistance testing of relays switches connectors PC board traces and cables The 1 kHz test signal eliminates potential errors introduced by thermo electric effects across the DUT contacts The 1 kHz ac test signal is the best solution for evaluating the internal resistance of batteries because it avoids de energy consumption High Speed Measurements The high speed 34 ms built in comparator and GPIB handler interfaces makes it possible to construct a measurement system using an automatic handler and an external computer to minimize production te
117. cts the trigger mode Shift Delay Key selects the trigger source from Internal Manual or External 15 Trigger Key triggers a measurement when in the Manual trigger mode 16 Local Key returns the 4338B to the local mode from the GPIB remote mode Shift Address Key sets the 4338B s GPIB address 17 Recall Key recalls the instrument state data from 4338B s internal memory Shift Save Key saves the instrument state data to the 4338B s internal memory 18 Primary Comparator Upper Limit Pri High Key sets the upper limit of the comparator function for the primary comparator Shift Secondary Comparator Upper Limit Sec High Key sets the upper limit of the comparator function for the secondary comparator 19 Primary Comparator Lower Limit Pri Low Key sets the lower limit of the comparator function for the primary comparator Shift Secondary Comparator Lower Limit Sec Low Key sets the lower limit of the comparator function for the secondary comparator 20 O Key Shift Key Lock Key locks out all key 0 input except for this key 21 Key Shift Reset Key resets the 4338B to its default state 22 Key Shift Configuration Key sets the beep setting and power line frequency setting and executes the internal test 23 3 Key 24 2 Key Shift Contact Check Key toggles the contact check function between ON and OFF 25 1 Key Shift Comparator Key toggles the comparator function between ON and OFF 26 4 Key
118. d 3 gt lt Field 4 gt Where Field 1 manufacturer always HEWLETT PACKARD Field 2 model number always 4338A Field 3 serial number in HP format like 2419J00100 Field 4 firmware version number like 01 00 LRN The LRN learn Device Setup query returns a sequence of commands that places the 4338B in the current state The returned sequence of commands can be sent back to the 4338B to place it in this state OPC The OPC OPeration Complete command tells the 4338B to set bit O OPC bit in the standard event status register when it completes all pending operations GPIB Reference 5 31 4338B OPC The OPC OPeration Complete query places an ASCII character 1 into the 4338B s Output Queue when all pending operations have been completed OPT The OPT OPTion identification query tells the 4338B to identify the options installed in the system interface RCL lt numeric_value gt The RCL recall command recalls the instrument state which was stored in the specified register number The 4338B has 10 available storage registers 0 through 9 lt numeric value gt is numeric 0 to 9 lt NR1 gt format RST The RST reset command returns the 4338B to the default state see SYSTem PRESet command and sets the following commands INITiate CONTinuous OFF SENSe CORRection STATe OFF SYSTem KLOCk OFF SAV lt numeric_value gt The SAV save command saves the instrument state
119. dry circuit loop prevents the test signal voltage applied across the DUT from exceeding 20 mV Thus even when an unknown DUT is measured without special preparation the contact resistance is still accurately measured without disturbing the state of the contacts 7 2 Measurement Basics 4338B Extending Test Leads Extending Test Leads When you want to use the 4338B with the handler or to make a test fixture use the connection methods shown in Figure 7 2 The names in the parenthesis are the terminals on the 4338B s front panel The Lcur terminal is not used for measurement Test Leads Figure 7 2 Test Lead Extension Measurement Basics 7 3 General Information Introduction This chapter provides the following general information for the 4338B m Specifications Supplemental Performance Characteristics General Information 8 1 Specifications 4338B Specifications Measurement Parameter R AC resistance X Reactance L Inductance Z Impedance 6 Phase Measurement Conditions a Test Signal Characteristics c Test Frequency 1 kHz 0 1 c Test Signal Level 1 y 104 1004 1 m 10 mArms o Maximum Voltage Across Sample 20 mV peak m Measurement Time Mode Short Medium and Long Ranging Auto and Hold manual m Averaging 1 to 256 a Trigger Mode Internal Manual External and Bus a Trigger Delay Time 0 to 9 999 se
120. ds in Chapter 7 for the information on how to extend the test leads Handler Interface 10048A L8006004 Figure 6 2 Measuring Internal Resistance of Batteries Application Measurement 6 5 Measuring Internal Resistance of Batteries 4338B 2 Run the following sample program 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 OPTION BASE 1 DIM St 200 Dat 200 Comp 200 Hp_ib 7 ASSIGN ASSIGN 1 OUTPUT OUTPUT 1 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT 0Hp4338 TO 717 Binary TO 717 FORMAT OFF 0Hp4338 RST 0Hp4338 x CLS 0Hp4338 0Hp4338 0Hp4338 0Hp4338 0Hp4338 0Hp4338 CALC1 FORM REAL CALC2 FORM NONE SENS FIMP APER 0 03 SENS FIMP RANG AUTO OFF SENS FIMP RANG 0 1 SOUR CURR 0 001 DISP Short the test leads then press Continue PAUSE OUTPUT Hp4338 SENS CORR COLL STAN2 OUTPUT 0Hp4338 x 0PC ENTER Hp4338 A DISP Connect the DUT then press Continue PAUSE DISP 1 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT 1 OUTPUT OUTPUT OUTPUT 1 OUTPUT OUTPUT OUTPUT 0Hp433
121. e command makes the 4338B wait until all previously sent commands are completed GPIB Reference 5 33 Status Reporting Structure 4338B Status Reporting Structure This section provides information about the status reporting structure for Service Request functions which correspond to SCPI Questionable Data 41 Cc EV Status EN Output Queue Standard Event Logical OR Logical OR Status Byte Logical OR Standard Operation sa ETERNO J Logical OR STB SRE Service Request Generation Note C Condition EV Event EN Enable Figure 5 2 Status Reporting Structure Service Request SRQ The 4338B can send an SRQ Service Request control signal when it requires the controller to perform a task When the 4338B generates an SRQ it also sets Bit 6 of the status byte RQS Request Service bit Service Request Enable Register allows an application programmer to select which summary messages in the status byte register may cause service requests Illustrated in Figure 5 3 5 34 GPIB Reference 4338B Status Reporting Structure Status Byte Resister The status byte register is composed of eight bits that summarize the overlaying status data structure The status byte can be read using either STB or SPOLL which
122. e No Contact Operations C 1 Overload Over Voltage No Contact Operations 4338B Table C 2 shows the summary of operations when the 4338B detects OVLD Overload OVVOL Over Voltage or N C No Contact The 4338B performs one of following cases in the Table C 2 Table C 2 Combination of any two OVLD OVVOL N C Conditions Condition Display Handler GPIB Output Solutions tput Data Mode Comprtr Outpu Mode OVLD amp N C N C N C OVVOL or lt State gt 2 Select an N C lt Data gt 9 9999E13 approptiate lt Comp gt 8 measurement range Cancel the bad contact between the DUT and the contact pin OVLD amp OVVOL High PHI and SHI lt State gt 4 Select an OVVOL or OVVOL or lt Data gt 9 9999E13 approptiate N C lt Comp gt 2 measurement range Change to the appropriate signal level N C amp OVVOL N C N C OVVOL or lt State gt 2 Change to the N C lt Data gt 9 9999E13 appropriate lt Comp gt 8 signal level C the bad OVVOL High PHI and SHI lt State gt 4 contact a and OVVOL or lt Data gt 9 9999E13 between the 3 N C lt Comp gt 2 DUT and the contact pin 1 Refer to the FETCh Command in Chapter 5 2 Measurement Status 0 Normal 1 Overload 2 No Contact 4 Over Voltage 3 Comparison result 1 IN 2 HIGH 4 LOW 8 No Contact 4 OVVOL signal or N C signal is detected from the Pin No 38 in
123. eck all GPIB addresses and connections most GPIB problems are caused by an incorrect address and bad or loose GPIB cables If the 4338B Hangs Up When You Send ABORt Command o Send the device clear command to the 4338B For example CLEAR 717 Remote Operation 4 25 GPIB Reference Introduction This chapter provides the reference for the GPIB commands used to control the 4338B in the GPIB remote mode GPIB Commands m Status Reporting Structure a Trigger System Data Transfer Format The 4338B can be operated using the General Purpose Interface Bus Gp1B GPIB corresponds to the Standard Commands for Programmable Instruments scP1 SCPI is the instrument command language for controlling instrument that goes beyond IEEE 488 2 to address a wide variety of instrument functions in a standard manner GPIB Commands Commands can be separated into two groups common commands and subsystem commands Common Commands Common commands are generally not measurement related but are used to manage macros status registers synchronization and data storage All common commands begin with an asterisk Common commands are defined in the IEEE 488 2 standard Common Commands CLS OPC SRE lt numeric_value gt ESE lt numeric_value gt OPC SRE ESE OPT STB ESR RCL lt numeric_value gt TRG IDN RST TST LRN SAV lt numeric_value gt WAI Subsystem Commands Subsystem commands include all meas
124. eference 4338B Rear Panel Table 3 2 Contact Assignment for Comparator Function Pin No Signal Name Description 1 EXT DCV1 External DC Voltage 1 2 EXT DCV1 DC Voltage supply pins for DC isolated open collector outputs PHI SHI PIN SIN PLO SLO The maximum voltage is 24V the minimum 5V 18 KEY LOCK Key Lock When this line is asserted all of the 4338B s front panel key functions are disabled 19 EXT TRIG External Trigger 4338B is triggered on the rising edge of a pulse applied to this pin when the trigger mode is set to External 20 EXT DCV2 External DC voltage 2 21 EXT DCV2 DC voltage supply pins for DC Isolated inputs EXT TRIG KEY LOCK and DC Isolated outputs ALARM INDEX EOM Maximum voltage is 15V minimum 5V 24 5V Internal voltage supply max output 0 1 A 25 5V Exceeding 0 1 A will cause the internal voltage to go to 0 V 26 COMI Common for EXT DCV1 27 COMI 28 PHI Primary Parameter High The comparison result of primary parameter is HIGH 29 PIN Primary Parameter In The comparison result of primary parameter is IN 30 PLO Primary Parameter Low The comparison result of primary parameter is LOW 31 SHI Secondary parameter High The comparison result of secondary parameter is HIGH 32 SIN Secondary parameter In The comparison result of secondary parameter is IN 33 SLO Secondary parameter Low The comparison result of secondary parameter is LOW 38
125. ent and accurate as possible Agilent Technologies recommends that you periodically request the latest MANUAL CHANGES supplement For information concerning serial number prefixes not listed on the title page or in the MANUAL CHANGE supplement contact the nearest Agilent Technologies office To confirm the firmware version turn ON the power for the 4338B or execute IDN on the external controller Table A 1 Manual Changes by Serial Number Serial Prefix or Number Make Manual Changes Table A 2 Manual Changes by ROM Version Version Make Manual Changes 1 00 Change 1 Manual Changes A 1 4338B Change 1 When the OVLD OVVOL or N C is displayed during the SHORT correction the 4338B will display WARNING Out Of Limit The SHORT correction data will still be used A 2 Manual Changes 4338B Serial Number Agilent Technologies uses a two part ten character serial number that is stamped on the serial number plate see Figure A 1 attached to the rear panel The first five characters are the serial prefix and the last five digits are the suffix SER NO AK Agilent Technologies Japan Ltd JP1KG12345 MADE INJAPAN 33 Figure A 1 Serial Number Plate Manual Changes A 3 Handler Interface Installation Introduction This appendix provides a description of the electrical characteristics of the interface signals
126. ent from a computer to an instrument Program messages consist of commands combined with appropriate punctuation and program message terminators Case Letter case upper and lower is ignored Program Message Terminator A program message must end with one of the three program message terminators lt new line gt lt END gt or lt new line gt lt END gt lt END gt means that EOI is asserted on the GPIB interface at the same time the preceding data byte is sent For example HP BASIC OUTPUT statement automatically sends a message terminator after the last data byte is sent If you are using a PC you can usually configure your system to send whatever terminator you specify Subsystem Command Syntax Subsystem command consists of the level mnemonics which are separated with colons For example command form of APERture under SENSe FIMPedance subsystem becomes as follows FIMPedance APERture Abbreviated mnemonics are also available for command headers In the above example FIMP APER is available Common Command Syntax Common commands do not have a hierarchical structure They are just sent as follows CLS Parameters There must be a lt space gt between the last command mnemonic and the first parameter in a subsystem command FIMP APERUparameter U means a space ASCII character decimal 32 is inserted here If you send more than one parameter with a single command each parameter must be separated b
127. ent range mode is Auto The Range setup key sets the measurement range The available measurement range settings are 1 mQ 10 mQ 100 mQ 1 9 109 100 Q 1 kQ and 10 kQ which are limited by test level setting See Figure 3 2 Range Setup Key When the measured impedance is out of range and the 4338B cannot measure at the currently set range setting OVLD is displayed Trigger Key The Trigger key triggers a measurement when in the manual trigger mode see Trigger Mode Delay Key 3 3 6 Function Reference 4338B Front Panel Trigger Mode Key The Trigger mode key toggles three trigger mode Internal Manual or External The 4338B also has a BUS trigger mode Internal Int The internal trigger mode In this mode measurements are free running and continuous Default Manual Man The manual trigger mode In the manual mode the 4338B performs a single measurement when the front panel key is pushed External Ext The external trigger mode The 4338B is triggered by a TTL pulse input through the rear panel External Trigger connector or through the handler interface For more information refer to External Trigger in Rear Panel Bus mode This mode is available only when in the GPIB remote state In the BUS GPIB only trigger mode the GET and TRG commands will trigger a single shot measurement For more information refer to TRIGger Subsystem in Chapter 5 The mode selected is
128. er Interface LINE Voltage Selector External Trigger Terminal Power Cord Receptacle Figure 3 4 Rear Panel External Trigger The EXT TRIGGER Terminal is used to input an External trigger signal When the 4338B is set to the External trigger mode the 4338B is triggered on the active low to high rising edge of a TTL level input pulse Figure 3 5 shows the specifications required of the TTL pulse Input Voltage 2 0V lt VIH lt 5 0V OV lt VIL lt 0 5V Input Current Max 0 1mA V IH 5 0V Max 0 4mA ViIL 0 44 Pulse Width Tp 100us LBDEBDOS Figure 3 5 Required External Trigger Pulse Specification 3 14 Function Reference 4338B Rear Panel N LINE Fuse Holder Fuse holder for the 4338B s line fuse The required fuse is selected depending on LINE Voltage Selector selection Refer to Table 3 1 LINE Voltage Selector The Line Voltage Selector switches the ac power source voltage selection This is used to match the 4338B to the ac operating voltage being used The line voltage selection is as follows Table 3 1 Line Voltage selection Voltage Selector Line Voltage Required Fuse 115V 100 120Vac 10 UL CSA type Time delay 0 5A 250V Agilent part number 2110 0202 230V 220 240Vac 10 UL CSA type Time delay 0 25A 250V Agilent part number 2110 0201 Serial Number Plate The serial number plate gives manufacturing information about the 4338B For details see Serial Num
129. et contains four types of test leads which are used depending on the DUT type A 16143B 16007A B 16006A 16005D fili no 16005B 16005D C 16006A 16007A B Figure 1 3 Connecting 16338A Getting Started 1 19 To Perform a SHORT Correction 4338B To Reset 4338B Resetting the 4338B sets its settings to their default states 1 Press to select the reset menu Shift 0001316 R 12 345mQ LVL AUTO System Reset Na Yes AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Press to select Yes Yes blinks then press fm O The 4338B is now set to the default state For more information about the default state refer to Reset Key E in Chapter 3 To Perform a SHORT Correction Correction is used to cancel the residual errors of the cables and the test fixture The SHORT correction cancels residual impedance in series with the DUT 1 Connect the electrodes of fixture to obtain a SHORT condition Note The SHORT condition is obtained by using a shorting bar or by connecting i the test leads together For details on making a good SHORT see the manual Y supplied with the test fixture being used Short 2 Press 4 The SH
130. eted 3 Always 0 zero 2 4 This bit is set when the ranging has completed 1 2 This bit is set when the settling has completed 0 Always 0 zero Questionable Status Register The Questionable Status Register group provides information about the quality of the 4338B s output and measurement data The 4338B has no operation to report an event to the questionable status register all of whose bits are always set to 0 Table 5 7 Questionable Status Register Assignments Bit No Bit Weight Description 15 0 Always 0 5 38 GPIB Reference 4338B Trigger System Trigger System This section provides information about the 4338B s trigger system SCPI defines the common trigger model for several types of instruments This trigger system allows you to have detailed control of the measurement process The description of the following information requires more technical expertise than most other topics covered in this chapter But you can avoid the need to learn the information in this section by using the INITiate commands to make your measurements 4338B Trigger System Configuration The trigger system synchronizes the 4338B measurement with specified events The events include GPIB trigger commands or a trigger pulse input through the rear panel External Trigger connector The Trigger system also allows specifying the number of times to repeat a measurement and the delay time between measurements ABOR
131. face Output Order 14 Set the LED_PW switch on the Handler Interface Tester to OFF 15 Press B twice to exit from the test mode Maintenance 9 15 Functional Test Record Agilent 4338B Milliohmmeter Test Signal Level Functional Test Serial No Temperature Humidity 9 16 Maintenance 4338B Date Tested by Fail Manual Changes Introduction This appendix contains the information required to adapt this manual to earlier versions or configurations of the 4338B than the current printing date of this manual The information in this manual applies directly to the 4338B serial number prefix listed on the title page of this manual Manual Changes To adapt this manual to your 4338B see Table A 1 and Table A 2 and make all the manual changes listed opposite your instrument s serial number and firmware version Instruments manufactured after the printing of this manual may be different from those documented in this manual Later instrument versions will be documented in a manual changes supplement that will accompany the manual shipped with that instrument If your instrument s serial number or ROM version is not listed on the title page of this manual in Table A 1 or Table A 2 make changes according to the yellow MANUAL CHANGES supplement In additions to information on changes the supplement may contain information for correcting errors Errata in the manual To keep this manual as curr
132. ference 5 27 4338B SYSTem Subsystem The SYSTem subsystem reports the firmware version and errors sets the beeper locks the front panel keys and defines the line frequency COMMAND PARAMETER SYSTem BEEPer MMediate STATe lt Boolean gt ERRor KLOCK lt Boolean gt LFRequency lt numeric_value gt PRESet VERSion SYSTem BEEPer IMMediate Emits a beep no query SYSTem BEEPer STATe ON OFF 1 0 Sets or queries if the beeper is enabled ON 1 enables the beeper and set beeper mode as defined by CALCulate 1 2 LIMit BEEPer command OFF O disables the all beeper including the error beep Query response is 1 0 SYSTem ERRor Returns the existing error numbers and messages in the 4338B s error queue Query only SYSTem KLOCK ON OFF 1 0 Sets or queries whether or not the front panel keys of the 4338B are locked ON 1 the front panel keys are locked OFF O the front panel keys are unlocked Query response is 1 0 SYSTem LFRequency lt numeric_value gt Sets or queries the 4338B s operating power line frequency The available line frequency selections are 50 Hz and 60 Hz lt numeric_value gt is numeric 50 or 60 integer 5 28 GPIB Reference 4338B SYSTem Subsystem SYSTem PRESet Resets the 4338B to its default states no query The reset states are as follows Auto measurement ON Source delay O ms Measurement parameter R resistance
133. fied parameter is enabled lt gt Angular brackets enclose words or characters that are used to symbolize a program code parameter or an GPIB command Square brackets indicates that the enclosed items are optional When several items are enclosed by braces one and only one of these elements may be selected A vertical bar is read as or and is used to separate alternative parameter options for example CALClate 1 2 means CALCior CALC2 DATA is optional so this allows to omit the keyword for example CALC1 LIM LOW lt numeric_value gt 5 8 GPIB Reference 4338B ABORt Command ABORt Command ABORt The ABORt command resets the trigger system and places all trigger sequences in the IDLE state Any actions related the trigger system that are in progress such as acquiring a measurement are aborted immediately The execution of an ABORt command will set any the pending operation flags to false for example flags that were set by the initiation of the trigger system See Trigger System Unlike RST ABORt does not alter the settings programmed by other commands No query Note After FETCh query TRG command or the BASIC command TRIGGER the i ABORt command will cause the GPIB bus to hang up To avoid this before Y ABORt command execution clear the GPIB bus by executing the BASIC command CLEAR address GPIB Reference 5 9 4338B CALCulate Subsystem The CALCulate subsystem cont
134. g and press B 3 Activate the Auto Measurement mode Auto Press o when the auto measurement indicator is OFF The Auto Measurement function allows the 4338B to measure a DUT automatically using the optimum measurement range and the test signal level 4 Perform the SHORT compensation a Connect the 16005B Kelvin clip leads to each other 6 2 Application Measurement 4338B Measuring Contact Resistance of Relays or Switches Ss AR Voltage e Voltage terminal e terminal Current Current terminal terminal b Press c Press or until ShortMeas is blinking and press B 5 Connect DUT Application Measurement 6 3 Measuring Contact Resistance of Relays or Switches 4338B Figure 6 1 Measuring Contact Resistance The following figure shows the typical measurement result display Shift 10006301 R 25 365m Q LVL AUTO AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock 6 4 Application Measurement 4338B Measuring Internal Resistance of Batteries N Measuring Internal Resistance of Batteries This example shows how to measure internal resistance of batteries using a handler 1 The following figure is the typical measurement system using a handler Refer to Extending Test Lea
135. ge Level On Chk Only Lock Enter the desired value using the numeric keys and press B When you want to exit without changing value just press B 2 2 Operating the 4338B 4338B Measurement Configuration m To set the source delay time Press or until SourceDelay blinks and press B Shift LD002352 R 12 345mQ X 0 1000m 2 LVL AUTO Source Delay 1 000s AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level On Chk Only Lock Enter the desired value using the numeric keys and press B When you want to exit without changing value just press B To display the current setting press until the setting value is displayed on the right side of the LCD display To Set the Contact Check The Cont Chk annunciator v indicates the ON OFF state of the contact check function The contact check function is turned ON OFF as follows a To turn ON the contact check function Cont Chk Press 2 The Cont Chk annunciator w is displayed m To turn OFF the contact check function Cont Chk Press amp again The Cont Chk annunciator v disappears Operating the 4338B 2 3 Measurement Configuration 4338B To Set the Beeper Mode To set the beeper mode for the comparator result reporting Config 1 Press C Shift LD001406 R 12 345mQ X 0 1000m Q LVL AUTO Beep Line Svc Test Exit A
136. her the display is ON or OFF ON 1 sets the display to be visible OFF O sets the display to be blank Query response is 1 0 DISPlay WINDow TEXT1 DIGit 3 4 15 Selects the display digits 3 3 digits 4 4 digits 5 5 digits Query response is 31415 DISPlay WINDow TEXT1 PAGE 1 2 Sets or queries the display mode 1 displays the measurement results 2 displays the comparison results Query response is 112 DISPlay WINDow TEXT2 PAGE 1 2 3 4 Selects the mode of Measurement Settings Display 1 displays the test signal level and averaging rate 2 displays the trigger delay and source delay 3 displays the comparator limits of primary parameter 4 displays the comparator limits of secondary parameter Query response is 1121314 5 18 GPIB Reference 4338B FETCh FETCh Query FETCh The FETCh query retrieves the measurements taken by the INITiate command and places them into the 4338B s output buffer Query only Query response is lt stat gt lt data1 gt lt data2 gt lt compl gt lt compl gt Where lt stat gt 0 1 2 4 lt datal gt lt data2 gt lt compl gt 8 lt comp2 gt 0 e N measured status normal overload no contact over voltage measurement data of primary parameter measurement data of secondary parameter Meaningless output when the secondary parameter is none comparison result of the primary parameter No output whe
137. ing For Completion Of Measurement detecting completion of measurement You can detect the status of the 4338B by using the status register as described in this section For information on the entire status report system for example information on each bit of the status register refer to Chapter 5 GPIB Reference The measurement state is indicated by the operation status register refer to Table 5 6 and Table 5 7 An SRQ service request is useful for detecting the completion of measurement in your program by using the information indicated by this register To detect the completion of measurement using SRQ use the following commands a SRE a STAT OPER ENAB The procedure is given below 1 Make the setup so that the 4338B generates an SRQ if bit 4 of the operation status event register is set to 1 2 Trigger the instrument to start a measurement 3 Perform interrupt handling in the program when the SRQ occurs Service request enable register SRQ E SRE 128 Status byte register o 0 o O STAT OPER ENAB 16 Operation status event register STAT OPER ol lo ol lo Positive transition filter o 1 1 o Negative transition filter Operation status condition register STAT OPER COND 32768 16384 8192 4096 2048 1024
138. k In an GPIB system there can be only one active talker at any given time Listener A listener receives device dependent data when addressed to listen In a GPIB system there can be any number of active listener at any given time Controller A controller manages the operation of the bus and addresses talker s and listener s In an GPIB system there can be only one active controller at any given time Table 3 3 lists the 4338B s GPIB capability and functions These functions provide the means for an instrument to receive process and transmit commands data and status over the GPIB bus Table 3 3 GPIB Interface Capability Code Function SH1 Complete Source Handshake capability AH1 Complete Acceptor Handshake capability T5 Basic Talker serial poll unaddressed if MLA Talk Only L4 Basic Listener unaddressed if MTA no Listen Only SRI Service Request capability RL1 Remote Local capability DC1 Device Clear capability DT1 Device Trigger capability CO No Controller capability El Drivers are open collector Function Reference 3 19 Theory of Operation 4338B Theory of Operation This section discusses the 4338B s theory of operation Overall Measurement Theory The 4338B measures Device Under Test DuT impedance in the following manner o DUT a 8003014 Figure 3 8 Definition of Impedance Figure 3 8 shows the Impedance definition
139. keys If so unlock the keys from the handler or the 16064B Key Lock 0 o Press 2 14 Operating the 4338B Function Reference Introduction This chapter provides information on all of the 4338B s functions m Front Panel m Rear Panel m Theory of Operation Function Reference 3 1 Front Panel 4338B Front Panel FVIEW 4338B 1 ENTRY MILL TOHMMETER Same adrs Min Max 52000000 Delay Save Short Se E oeme agolalmalag LINE UNKNOWN futo on al Ses Lor Sec High Comprtr Cont Chk O CA Do not apply a de voltage exceeding 42Y CATI T y tee tens tes Pr EN 1 2 3 EN rum Sus todo Dian todo tones Set tri ls Lok Reset Config Enter E Ed GOH Figure 3 1 Front Panel Note In this manual the BLUE shift key is expressed as top of the key is not Hy labeled with blue Display The display has two functions the character display and an annunciator display The character display displays the measurement result setting data and instrument messages The 4338B has four measurement display modes For details on the display modes refer to Display Mode Key The
140. layed on the right side of the LCD display Measurement Settings area each time pressed The following information is displayed Test signal level and Averaging rate Trigger delay time and Source delay time Comparator limits of the primary parameter Comparator limits of the secondary parameter Function Reference 3 5 Front Panel 4338B Disp Mode The Display Mode key sets the 4338B to one of the following four display modes Display Mode Key Data displays the measurement result default Comprtr displays the result message of the comparator as HIGH grater than the upper limit IN passed LOW less than the lower limit and N C contact check fail Off does not display any measurement result Display OFF Also if you select Digit in this menu you can set the number of digits for the measurement data The available digits are 3 4 and 5 Average Key The Average key sets the measurement averaging rate The 4338B averages the measurement results automatically The averaging rate can be set from 1 to 256 The default averaging rate is 1 Auto Hold range Key G The Auto Hold range key toggles the measurement ranging mode between Auto and Hold The Auto mode selects the optimum measurement range automatically within 5 measurement cycles The Hold mode fixes the measurement range setting to the range you select When the Hold mode is selected the Hold Range annunciator v will be displayed The default measurem
141. lt To repeat the measurement repeat Steps 2 to 4 Figure 4 6 and Figure 4 7 show sample programs using the FETC command Figure 4 6 is for the ASCII transfer format and Figure 4 7 is for the binary transfer format These programs when an external trigger is inputted and the measurement finishes read out the measurement status measured primary parameter result measured secondary parameter result and comparator sorting result when the comparator function is ON and display them The program of Figure 4 6 is detailed below Line 60 Sets the GPIB address Line 70 Sets the data transfer format to the ASCII format Lines 90 to 100 Turns ON the trigger system continuous startup and sets the trigger mode to the external trigger Lines 120 to 130 Reads out the ON OFF state of the comparator function and assigns it into the Comp_flag variable Lines 170 to 210 Makes the setup generate an SRQ when measurement finishes and clears the status byte register and operation status event register Lines 250 to 260 Sets the branch destination of the SRQ interrupt and enables the SRQ interrupt Lines 270 to 280 Displays the message to prompt the user to input an external trigger and then waits until the external trigger is inputted and the measurement finishes Line 300 Executes the measured result readout command FETC Line 320 If the Comp flag value is 1 the comparator function is ON reads out the measurement status measured primary par
142. measurement time Short Medium or Long 5 am o Trigger indicates that the trigger mode is Internal Manual or External Hold Range indicates that the 4338B is in the Hold range mode When in the Auto range mode the Hold range annunciator is not displayed Hold level indicates that the 4338B is in the Hold level mode When in the Auto level mode the Hold level annunciator is not displayed Comparator On indicates that comparator function is ON Contact Check On indicates that the contact check function is ON Talk Only indicates that the 4338B is in the GPIB talk only mode Remote indicates that the 4338B is in the GPIB remote mode Key Lock indicates that the 4338B s front panel keys are locked out Measurement Setting Shows the 4338B s settings such as test signal level averaging rate ete Shift annunciates that the shift toggle is active Getting Started 1 7 Overview Rear Panel This section gives a guided tour of the rear panel For a detailed description of each item see Chapter 3 Ca LINE Voltage lt gt CAUTION For Continued protection against Selector fire hazard replace only with the same type O O and rating of fuse as specified for the line WARNING Wo operator serviceable parts O inside Refer servicing to quaified personnel W5 oo Handler Interface Es 2304
143. measurement time mode setting Short Med or Long is indicated by the Meas Time annunciator v To select the measurement time mode 1 Press until the measurement time mode is set to the desired mode To Set the Averaging Rate To set the averaging rate 1 Press fave Shift LDOO1 408 R 12 345mQ X 0 1000m Q LVL AUTO Average AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Enter the desired value 3 Press B to set the value and to exit The current setting is desplayed on the right side of the LCD display When the current setting is not displayed press until it is displayed To Set the Trigger Delay or Source Delay Time To set the trigger delay or the source delay time Delay 1 Press a i Mode Shift 0002301 TrigDelay SourceDelay Exit AVG R 12 345m Q X 0 1000m Q LVL AUTO Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rmt Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock m To set the trigger delay time Press or until TrigDelay blinks and press B Shift LD002351 R 12 345mQ X 0 1000m 2 LVL AUTO Trigger Delay 1 000s AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Ran
144. mediately terminate operation and disconnect the power cable Contact your local Agilent Technologies sales representative or authorized service company for repair of the instrument If you continue to operate without repairing the instrument there is a potential fire or shock hazard for the operator E Instrument operates abnormally E Instrument emits abnormal noise smell smoke or a spark like light during the operation E Instrument generates high temperature or electrical shock during operation EH Power cable plug or receptacle on instrument is damaged E Foreign substance or liquid has fallen into the instrument Herstellerbescheinigung GERAUSCHEMISSION LpA lt 70 dB am Arbeitsplatz normaler Betrieb nach DIN 45635 T 19 Manufacturer s Declaration ACOUSTIC NOISE EMISSION LpA lt 70 dB operator position normal operation per ISO 7779 Caution Do not apply DC voltage exceeding 42V to the UNKNOWN terminals or input circuit of the 4338B will be destroyed Agilent 4338B Milliohmmeter Operation Manual SERIAL NUMBERS This manual applies directly to instruments with serial number prefix JPIKD or firmware revision 1 01 For additional important information about serial numbers read Serial Number in Appendix A opie Agilent Technologies Agilent Part No 04338 90040 Printed in Japan March 2003 Seventh Edition Notice The information contained in this document is subject to ch
145. mmand 5 6 GPIB Reference 4338B Program Message Syntax Multiple Messages To send more than one command in the same message you must separate the commands with a semicolon CLS INIT Query and Response Message Syntax All subsystem commands can be queried except for the commands described as no query in the command reference To send a query message add after last command mnemonic FIMP APER A response message may contain both commas and semicolons as separators When a single query command returns multiple values a comma is used to separate each data item When multiple queries are sent in the same message the group of data items corresponding to each query are separated by a semicolon For example the fictitious query QUERY1 QUERY2 might return a response message of lt datal gt lt datal gt lt data2 gt lt data2 gt After the message lt new line gt lt END gt is always sent as a response message terminator GPIB Reference 5 7 Command Reference 4338B Command Reference In this section all the commands which are available with the 4338B are listed in alphabetical order Notations The following conventions and definitions are used in this chapter to describe GPIB operation CALClate 1 2 LIMit LOWer DATA lt numeric_value gt Sets or queries the lower limit of the specified parameter CALClate 1 2 LIMit LOWer STATe ON OFF 1 0 Sets or queries if the lower limit of the speci
146. mp A ENTER Agt4338b USING Read_form Num_of_byte IF Comp_flag 1 THEN ENTER Binary Meas_stat Pri_para Sec_para Comp1 Comp2 ELSE ENTER Binary Meas_stat Pri_para Sec_para END IF ENTER Agt4338b USING A Buff Display results PRINT USING 15A X D Meas status Meas stat PRINT USING 15A X SD 5DE Pri parameter Pri para PRINT USING 15A X SD 5DE Sec parameter Sec para IF Comp flag 1 THEN PRINT USING 15A X K Primary Comparator Compf PRINT USING 15A X K Secondary Comparator Comp2 ELSE PRINT USING 19A Comparator OFF END IF END Figure 4 5 Reading out the measured result in binary transfer format using TRG command Remote Operation 4 17 Reading Out Measured Result 4338B Reading out measured result using FETC command You can use this readout method when you want to trigger the instrument from any source other than an external controller or when you want to perform a process that is between triggering the instrument and reading out the measured result The readout procedure using the FETC command is described below 1 Set up the trigger mode as necessary 2 Trigger the instrument by using the method for the trigger mode Note To trigger the instrument from an external controller in this procedure use the i TRIG command Y 3 Execute the FETC command at the completion of the measurement 4 Read out the measured resu
147. n comparator is OFF In High Low no contact comparison result of the secondary parameter No output when comparator is OFF Meaningless output when the secondary parameter is none In High Low no contact Data format is specified using the FORMat subsystem For more information refer to To Trigger a Measurement in Chapter 4 GPIB Reference 5 19 4338B FORMat Subsystem COMMAND PARAMETER FORMat DATA ASCii REAL 64 FORMat DATA ASCii REAL 64 Sets the data format for transferring numeric and array information retrieved using the DATA subsystem or the FETCh query ASCii sets the data transfer format to the ASCII transfer format REAL 64 sets the data transfer format to the real 64 bit transfer format For details about the data transfer formats see Data Transfer Format Query response is ASC REAL 64 5 20 GPIB Reference 4338B INITiate Subsystem INITiate Subsystem The INITiate subsystem controls the initiation of the trigger system It indicates all trigger sequences as a group The detailed description of the trigger system is in Trigger System COMMAND PARAMETER INITiate CONTinuous lt Boolean gt IMMediate INITiate IMMediate The INITiate IMMediate command causes all sequences to exit the IDLE state and enter the INITIATE state This command causes the trigger system to initiate and complete one full trigger cycle retur
148. nance 4338B Performance Tests 4 Set the trigger delay time to 9 seconds using the following procedure a Press E to display the trigger source delay setting menu b Press E oF until TrigDelay blinks and press B c Press 9 and press B d Press Ej or until Exit blinks and press B 5 Record the universal counter reading on the calculation sheet on the Counter Reading line Note The counter may display strange frequency readings for a moment in this test i this is because the 4338B turns the test signal off after each measurement The Y delay time in which the 4338B outputs the test signal continuously is used to ease the test signal frequency measurement 6 Calculate the test result according to the calculation sheet and record the result into the performance test record Maintenance 9 5 Performance Tests 4338B Resistance Measurement Accuracy Test Calibrated Standard Resistors are measured with the 4338B and the measured values are compared with the standards calibration values to determine the measurement accuracy of the 4338B Specification Basic Measurement Accuracy 0 4 See Chapter 8 General Information for details Test Equipment Description Recommended Model 1 mQ Standard Resistor 420814 10 mQ Standard Resistor 42032A 100 mQ Standard Resistor 42033A1 1 Q Standard Resistor 42034A1 10 Q Standard Resistor 42035A1 100 Q Standard Resistor 42036A 2 1 kQ Standard Resistor 4
149. nd the lower limit LOW less than the lower limit N C contact check failed When measurement parameter changes the comparator function is automatically turned OFF 3 10 Function Reference 4338B Front Panel Contact Check Key 5 The contact check key toggles the contact check function ON and OFF This function monitors whether the DUT is properly connected to the measurement terminals When the no contact is detected the 4338B displays N C The default state is OFF When the contact check function is ON the Cont Chk annunciator v will be displayed Short Key The Short key executes the SHORT correction function The SHORT correction measurement must be performed when the high terminal and low terminals are directly shorted together or with a low impedance high quality shorting device The 4338B takes measurement data under these conditions and uses the correction data to cancel measurement errors due to the residual impedance of cable and test fixture The correction data is stored in non volatile memory EEPROM Short Press 4 the following SHORT correction menu is displayed e ShortMeas Performs the SHORT correction e MeasVal Displays the SHORT correction data R X o Exit Exits the menu If the short impedance Zs is NOT less than 10 9 the 4338B displays WARNING Out Of Limit This is only a WARNING the SHORT correction data will still be used When the OVLD OVVOL or N C
150. nd up to 200 measurements can be stored into each buffer Into REF1 and REF2 the reference values for deviation measurement are entered REF1 is for the primary parameter and REF2 for the secondary parameter REF 1 and REF2 can store only one data which is the nominal value for the deviation measurement The data stored in the BUF1 and BUF2 are set by DATA FEED BUF1 BUF2 lt data_handle gt command COMMAND PARAMETER DATA DATA REF 1 REF2 lt numeric_value gt DATA BUF 1 BUF2 FEED BUF1 BUF2 lt data_handle gt CONTrol BUF1 BUF2 ALWays NEVer POINts BUF1 BUF2 lt numeric_value gt DATA DATA REF1 REF2 lt numeric_value gt Enters the data into the data buffer REF1 or REF2 The 4338B has capability of deviation measurement which generates output of deviation between measurement result and user defined nominal value The DATA DATA command allows programmer to define the nominal value Deviation measurement is controlled by the CALCulate 1 2 MATH command REF 1 nominal value for primary parameter data processing REF2 nominal value for secondary parameter data processing Query response of DATA DATA REF1 REF2 retrieves the data buffer REF1 or REF2 according to the format determined by FORMat subsystem commands GPIB Reference 5 15 DATA Subsystem 4338B DATA DATA BUF1 BUF2 Returns the data held in the data buffer BUF1 or BUF2 according to the format determined by FORMat su
151. nds oso a a a a a a Subsystem Commands aooaa a e Subsystem Command Tree oaoa a a a a Program Message Syntax oaoa a a a Case o oo a Program Message Terminator Subsystem Command Syntax 2 a e Common Command Syntax 2 a Parameters 1 1 ee e Parameter Topes Suffix 20 a A Multiple Messages 2 0a a a a a Query and Response Message Syntax oaoa a a a a a Command Reference Notations oaa aa ABORt Command aaa a A ABORt oaa a CALCulate Subsystem ooo a a a a e CALCulate1 FORMat REAL MLINear CALCulate2 FORMat NONE IMAGnary PHASe LS 1 2 CALCulate 1 2 LIMit BEEPer CONDition FAIL PASS 2 2 CALCulate 1 2 LIMit BEEPer STATe ON OFF 1 O 2 2 CALCulate 1 2 LIMit CLEar 2 1 e Contents 4 CALCulate 1 2 LIMit FAIL Lc CALCulate 1 2 LIMit LOWer DATA lt numeric value gt 1 2 2 CALCulate 1 2 LIMit LOWer STATe ON OFF 1 O CALCulate 1 2 LIMit STATe ON OFF 1 O CALCulate 1 2 LIMit UPPer DATA lt numeric_value gt o o CALCulate 1 2 LIMit UPPer STATe ON OFF L 0 CALCulate 1 2 MATH EXPRession CATalog 2 0 ee CALCulate 1 2 MATH EXPRession NAME DEV PENT 2 CALCulate 1 2 MATH STATe ON OFF 1 O 202 CALCulate 1 2 PATH 0 2 a DATA Subsystem 2 0 o a a a a A DATA DATA REF1 REF2 lt numeric_value gt 0
152. nge m SENS FIMP RANG m SENS FIMP RANG AUTO For example to select the auto range mode OUTPUT 717 SENS FIMP RANG AUTO ON For example to select the 1 Q range OUTPUT 717 SENS FIMP RANG AUTO OFF OUTPUT 717 SENS FIMP RANG 1 To Select the Test Signal Level The following commands select the test signal level m SOUR CURR m SOUR CURR AUTO For example to select the auto level mode OUTPUT 717 SOUR CURR AUTO ON For example to select 100 A OUTPUT 717 SOUR CURR AUTO OFF OUTPUT 717 SOUR CURR 1E 4 To Set the Measurement Time Mode The following command sets the measurement time mode m SENS FIMP APER To set the measurement time to SHORT OUTPUT 717 SENS FIMP APER 0 034 To set the measurement time to MEDIUM OUTPUT 717 SENS FIMP APER 0 07 4 6 Remote Operation 4338B To Set Up the 4338B To set the measurement time to LONG OUTPUT 717 SENS FIMP APER 0 9 To Set the Averaging Rate The following commands set the averaging rate m SENS AVER m SENS AVER COUN For example to set the averaging rate to 4 OUTPUT 717 SENS AVER 4 To Set the Delay Time The following commands set the delay time m TRIG DEL m TRIG SEQ2 DEL For example to set the trigger delay time to 10 ms OUTPUT 717 TRIG SEQ2 DEL 1E 2 For example to set the source delay time to 10 ms OUTPUT 717 TRIG DEL 1E 2 To Set the Beeper Mode The following commands set the beeper mode CALC 1 2 LIM BEEP CA
153. ning to IDLE on completion If the 4338B is not in IDLE or if INITiate CONTinuous is set to ON an INITiate IMMediate command has no effect on the trigger system and error 213 is generated No query INITiate CONTinuous ON OFF 1 0 The INITiate CONTinuous command sets or queries whether or not the trigger system is being continuously initiated ON 1 continuously initiated OFF O not continuously initiated Query response is 1 0 GPIB Reference 5 21 4338B SENSe Subsystem COMMAND PARAMETER SENSe AVERage COUNt lt numeric_value gt STATe lt Boolean gt CORRection COLLect ACQuire STAN dard2 METHod REFL1 DATA STAN dard2 STATe lt Boolean gt FIMPedance APERture lt numeric_value gt MS S CONTact VERify lt Boolean gt RANGe AUTO UPPer lt numeric_value gt MOHM OHM KOHM FUNCtion lt sensor function gt SENSe AVERage COUNt lt numeric_value gt Sets or queries the averaging rate lt numeric_value gt is numeric 1 to 256 integer default is 1 MAXimum 256 MINimum 1 Query response is lt numeric_value gt lt NR1 gt format SENSe AVERage STATe ON OFF 1 0 Sets or queries if averaging is enabled ON 1 enables averaging OFF O disables averaging Query response is 1 0 SENSe CORRection COLLect ACQuire STANdard2 Performs a SHORT correction The instrument takes SHORT correction data which cancels measurement errors due
154. notify the carrier as well as the Agilent Technologies office Keep the shipping materials for the carrier s inspection Providing clearance to dissipate heat at installation site To ensure the specifications and measurement accuracy of the product you must keep ambient temperature around the product within the specified range by providing appropriate cooling clearance around the product or for the rackmount type by forcefully air cooling inside the rack housing For information on ambient temperature to satisfy the specifications and measurement accuracy of the product refer to Chapter 8 Specifications When the ambient temperature around the product is kept within the temperature range of the operating environment specification refer to General in Chapter 8 the product conforms to the requirements of the safety standard Furthermore under that temperature environment it has been confirmed that the product still conforms to the requirements of the safety standard when it is enclosed with cooling clearance as follows Conditions Rear 400 mm Side 100 mm Upper 15 mm Instruction for Cleaning For cleaning wipe with soft cloth that is soaked with water and wrung tightly without undue pressure Getting Started 1 9 Overview 4338B Power Cable In accordance with international safety standards this instrument is equipped with a three wire power cable When connected to an appropriate ac power outlet
155. ntil TrigDelay blinks and press B and press B or until Exit blinks and press B 6 Confirm that the multimeter reading is within the test limits listed in Table 9 3 Functional Test Note i Y The multimeter may display strange voltage readings for a moment in this test this is because the 4338B turns the test signal off after each measurement The delay time in which the 4338B outputs the test signal continuously is used to ease the test signal level measurement 7 Perform this test for all settings listed in Table 9 3 Table 9 3 Test Signal Minimum Maximum Level Limit Limit 1 mA 9 9 mV 12 1 mV 10 mA 99 mV 121 mv Maintenance 9 13 Functional Test 4338B Handler Interface Functional Test The 4338B s handler interface function is tested using the built in selftest and the handler interface tester Test Equipment Description Recommended Model Handler Interface Tester 04339 65007 Procedure Initial Setup 1 Turn the 4338B OFF 2 Set the LED PW switch on the Handler Interface Tester to OFF and set the IN1 IN2 IN3 and IN4 switches to 0 3 Set up the equipment as shown in Figure 9 4 To Handler Interface Handler Interface Tester Connector B imo or 00 0000 E Handler Interface Tester Furnished Cable Figure 9 4 Handler Inte
156. omatic selection of the optimum measurement range and test signal level To activate the auto measurement mode Auto Meas Press O The auto measurement indicator turns ON If the Hold Range annunciator v or Hold Level annunciator v is displyed the indicator turns off To Select Test Signal Level The 4338B has five test current levels 1 yA 10 pA 100 A 1 mA and 10 mA In addition to these selection you can select also the auto level mode in which the 4338B automatically selects the optimum measurement test level If the test level is set other than the auto level mode the Hold Level annunciator v is displayed To select the test level 1 press t Auto and available test signal levels are displayed Shift 10001318 R 12 345m 9 X 0 1000m amp LVL AUTO LVL AUTO lu 104 1004 Im 10m AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint Key Measurement Settings Meas Time Trigger Range Level In Chk Only Lock 2 Press or until the desired level blinks If you want to select the auto level mode press or until Auto blinks 3 Press B 1 22 Getting Started 4338B To Select Measurement Range To Select Measurement Range Auto Hold Range Mode The 4338B has two measurement range modes Auto and Hold The Auto mode changes the measurement range automatically to fit the measured value The Hold mode fixes the measurement range To select the r
157. ommand Query response is DEV PCNT GPIB Reference 5 13 4338B CALCulate 1 2 MATH EXPRession NAME DEV PCNT Defines or queries the expression used for math processing which is enabled by CALCulate 1 2 MATH STATe The 4338B has deviation measurement capability which generates an output of the deviation between measurement result and a user defined nominal value The nominal value can be defined using the DATA DATA command CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter DEV absolute value of deviation PCNT percentage of deviation At RST CALCulate 1 2 MATH EXPRession NAME is set to DEV CALCulate 1 2 MATH STATe ON OFF 1 0 Sets or queries if math processing defined by CALCulate 1 2 MATH EXPRession NAME is enabled ON 1 enables math processing OFF O disables math processing Query response is 1 0 CALCulate 1 2 PATH Returns the CALCulate subsystems in the order in which they are to be performed query only CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter Query response is FORM MATH LIM 5 14 GPIB Reference 4338B DATA Subsystem DATA Subsystem The DATA subsystem commands are used to store and read measurement data to and from the 4338B s data buffer The 4338B provides four data buffers which are named BUF 1 BUF2 REF1 and REF2 BUF 1 and BUF2 are used to store measurement results a
158. oolean gt 5 2 GPIB Reference 4338B Subsystem Commands continued GPIB Commands Command Parameter Note SENSe continued CORRection COLLect ACQuire STANdard2 METHod REFL1 DATA STANdard2 STATe lt Boolean gt FIMPedance APERture lt numeric_value gt MS S CONTact VERify lt Boolean gt RANGe AUTO lt Boolean gt EUPPer lt numeric_value gt MOHM OHM KOHM FUNCtion lt sensor function gt SOURce CURRent LE Vel IMMediate E AMPLitude lt numeric_value gt UA MA AUTO lt Boolean gt STATus OPERation CONDition query only ENABle lt numeric value gt EVENt query only PRESet no query QUEStionable CONDition query only ENABle lt numeric value gt EVENt query only SYSTem BEEPer IMMediate no query STATe lt Boolean gt ERRor query only KLOCk lt Boolean gt LFRequency lt numeric_value gt PRESet VERSion query only TRIGger SEQuence1 DELay lt numeric_value gt MS S IMMediate no query SOURce BUS EXTernal INTernal MANual SEQuence2 DELay lt numeric_value gt MS S GPIB Reference 5 3 Subsystem Command Tree 4338B Subsystem Command Tree Top of the subsystem command tree is called the root command or simply the root To reach the low level commands you must specify a particular path just like you would for example specify a DOS file directory path After Power ON or after RST the current path is set
159. or codes 3 12 Function Reference 4338B Front Panel item result error code 1 Beeper Display RAM EPROM Calibration data EEPROM User s data EEPROM A D converter DOI o a fF wi N Backup RAM beep once display all digits and segments display error message if fail display error message if fail display error message if fail display error message if fail display error message if fail display error message if fail o e N 32 1 During the power on test the 4338B suspends operation if an error occurs 2 During the power on test the 4338B uses its default setting and continues with the test The self test is also executed at power on After the test the 4338Bs settings are not affected m Exit return to measurement Function Reference 3 13 Rear Panel 4338B Rear Panel GPIB Interface LINE Fuse Holder LINE fT IA Voltage Fuse T 0 54 2504 O 250 r CAUTION For Continued protection against Selector fire hazard replace only with the same type 6 and rating of fuse as specified for the line voltage being utilize WARN z No operator serviceable parts 5 inside Refer servicing to quaified personnel Ny Handler Interface Ext Trigger 6N 0 gt em z d 50 60Hz A ANA Max REAR38B2 Serial Number Plate Handl
160. peak voltage across the DUT exceeds 20 mV the source output level goes to Y O V and the 4338B displays OVVOL For details see Dry Circuit Loop in Chapter 7 Measurement Parameter Key The Measurement Parameter key selects the measurement parameter The 4338B has the following measurement parameters R default R L series circuit R X Z 6 Where R Resistance L Inductance X Reactance Z Absolute value of Impedance 0 Phase Angle deg Meas Prmtr Deviation Mode Key The Deviation mode A mode key selects the deviation measurement mode which displays the difference between the measured value a user entered nominal value and sets the nominal value of the deviation measurement A ABS mode displays the difference between the measured value and the nominal value A mode displays the difference between the measurement value and the nominal value as a percentage of the nominal value Off turns OFF the deviation measurement mode default Measurement Time Key The Measurement Time key toggles the measurement time between Short Medium and Long The current setting is indicated by the Meas Time annunciator v While a Short measurement time setting gives the shortest measurement time a Long measurement time will give the more accurate result The default measurement time is Medium ee Show Setting Key The Show Setting Key displays the current settings of the 4338B The settings are sequentially disp
161. r No Substitute 42036 A2 1 P 16074A 1 KQ Standard Resistor No Substitute 42037 A2 1 P 16074A 10 kQ Standard Resistor No Substitute 42038 A2 1 P 16074A SHORT Termination No Substitute 42091A 1 P 16074A Adapter Dual Banana BNC f PN 1251 2277 1 F Cable 30 em BNC m BNC m PN 8120 1838 1 PF 61 em BNC m BNC m PN 8120 1839 1 PF Handler Interface Tester No Substitute PN 04839 65007 1 F 1 P Performance Tests F Functional Tests 2 Part of 42030A Standard Resistor Set Maintenance 9 1 Performance Tests 4338B Performance Tests Introduction This section provides the test procedures used to verify that the 4338B s specifications listed in Chapter 8 are met All tests can be performed without access to the interior of the instrument The performance tests can also be used to perform incoming inspection and to verify that the 4338B meets its performance specifications after troubleshooting or adjustment If the performance tests indicate that the 4338B is NOT operating within the specified limits check your test setup then proceed with troubleshooting if necessary Note Allow the 4338B to warm up for at least 15 minutes before you execute any of i the performance tests Y Note Perform all performance tests in ambient conditions of 23 C 5 C i lt 70 RH Test Equipment Table 9 1 lists the test equipment required to perform the tests described in this section Use only calibr
162. r or replace products that prove to be defective For warranty service or repair this product must be returned to a service facility designated by Agilent Technologies Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent Technologies from another country Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instruction when property installed on that instrument Agilent Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free Limitation Of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Agilent Technologies specifically disclaims the implied warranties of merchantability and fitness for a particular purpose vi 4338B Exclusive Remedies The remedies provided herein are buyer s sole and exclusive remedies Agilent Technologies shall not be liable for any direct indirect speci
163. r than one of the keys in ENTRY block before pressing CY the setting will not change and Maximum and Minimum Keys These keys enter the maximum and minimum numeric value in place of using the numeric keys For example 1 Press E and you will get the maximum value of averaging rate 256 Shift LD001313 R 12 345mQ Average 256 LVL AVG gt AUTO gt Talk Only Rint Key Lock Hold Hold Range Level Short Med Long Meas Time Man Trigger Int Ext Comprtr Cont On Chk 2 Press B to enter the value and exit this menu 1 16 Getting Started Measurement Settings 4338B Using Front Panel Keys Left Down and Right Up Arrow Keys Increments or decrements numeric entry For example Ad 1 Press to bring up the GPIB address setup display 2 Press several times and confirm a change in value 3 Press B to exit the setup display Back Space Key Erases the last entered character and cancels the input value For example Sec Low 1 Press to select comparator limit menu 2 Press Comprtr Cont Chk Short Shift 0001314 R 12 345m Q LVL AUTO Pri Low Limit 1234 AVG NS Short EE Int mer Ext pola pels Comprtr Cont Eis Rmt Key Measurement Settings 3 Press 7 R 12 345m Q LVL AUTO Pri Low Limit 123 AVG Short Med Long Int n Ext Hold Hold Comprtr Cont Talk Rint Key
164. ral protocol used for transmitting individual bytes of data between instruments and a controller With an GPIB system many different types of devices including instruments computers plotters and printers can be connected in parallel When configuring an GPIB system the following restrictions must be adhered to m The length of cable between two devices must be less than or equal to four meters The total length of cable in one bus system must be less than or equal to two meters times the number of devices connected on the bus the GPIB controller counts as one device and the total length of cable must not exceed 20 meters a A maximum of 15 devices can be connected on one bus system 3 18 Function Reference 4338B Rear Panel m There are no restrictions on how the cables are connected together However it is recommended that no more than four piggyback connectors be stacked together on any one device The resulting structure could exert enough force on the connector mounting to damage it Every GPIB device has a unique address for identification The available GPIB addresses are the integer values 0 to 30 Any device on an GPIB bus must have a unique address otherwise there will be bus contention as devices with the same address try to use the bus at the same time Every GPIB device must be capable of performing one or more of the following interface functions Talker A talker sends device dependent data when it is addressed to tal
165. returns the decimal expression of the contents of the register equal to the sum of the total bit weights of all bits set to 1 For more information see To Report the Instrument s Status in Chapter 4 Status Summary Messages vice uest 7 V Status Byte Register ration ry read by STB or read by Serial Poll Logical OR Service Request Enable Register Set by SRE Figure 5 3 Status byte Register Bits are set to 1 and reset to 0 Table 5 3 Status Byte Assignments Bit No Bit Weight Description 7 128 Operation Status Register Summary Bit 6 64 Request Service Bit This bit is set when the any enabled bit of the status byte has been set which indicates 4338B has at least one reason for requesting service SPOLL resets this bit 5 32 Standard Event Status Register Summary Bit 16 MAV Message Available Bit This bit is set whenever the 4338B has data available in Output Queue and is reset when the available data is read 3 8 Questionable Status Register Summary Bit 2 0 always O zero GPIB Reference 5 35 Status Reporting Structure 4338B Standard Event Status Register The Standard Event Status Register is frequently used and is one of the simplest You can program it using GPIB common commands ESE and ESR Refer to
166. rface Functional Test Setup 4 Turn the 4338B ON 5 Reset the 4338B using the following procedure a Press to display the system reset menu b Press or until Yes blinks and press B Key Lock Function Test 6 Set the IN4 switch on the Handler Interface Tester to 1 7 Confirm that the all keys on the 4338B s front panel are locked out 8 Set the IN4 switch on the Handler Interface Tester to 0 External Trigger Function Test 9 Press to set the trigger mode to External 10 Press the IN5 switch on the Handler Interface Tester and confirm that the 4338B is triggered 9 14 Maintenance 4338B Functional Test Handler Interface Output Test 11 Start the handler interface output test with the following procedure a Press to display the configuration setting menu b Press or until Svc blinks and press qm c Press or until HNDL blinks and press qm 12 Set the LED_PW switch on the Handler Interface Tester to ON Caution Do not set the LED PW switch to ON except when doing the handler interface output test The LEDs may cause the 4338B to shut down during normal Y Operation 13 Confirm that the LEDs on the Handler Interface Tester light in the order shown in Figure 9 5 in accordance with the 4338B display 1 2 3 4 5 18 SLO O 23 OVER VOL y es o e e e O O O E e A gt o o oO T N o 0000 kk DH MOTTA LEMO1006 Figure 9 5 Handler inter
167. rocedure o a a a a A B 5 C Overload Over Voltage No Contact Operations Messages Instrument Errors a ee ee ee ee aa ee Messages 2 GPIB Errors Messages 3 Index Contents 8 Figures 47 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 5 11 6 1 6 2 6 3 7 1 7 2 9 1 9 2 9 3 9 4 9 5 Serial Number Plate B 1 Power Cable Supplied 2 a a a a a ee Voltage Selector and Fuse Connecting 16338A A Front Panel 2 2 2 2 2 Test Level and Measurement Range Setup 2 04 Source Delay and Trigger Delay ee e Rear Panel ll A Required External Trigger Pulse Specification Ce Pin Assignment For Handler Interface Connector 2 2 Timing Diagram e Definition of Impedance e Ce Vector Representation of Impedance Ce A o Relationship between Measurement Parameters Cl Simplified Model of 4338B_ en Simple Program Example SRQ generation sequence when measurement finishes 2 Detecting the completion of measurement using SRQ Reading out the measured result in ASCII transfer format by using the TRG command 1 E A Reading out the measured result in binary transfer format using TRG command Reading out the measured result in ASCII transfer format using the FETC command 1 a a Reading out measured result in binary
168. rols the following measurement data processing procedures 1 to select the measurement parameter CALClate FORMat subsystem 2 to control the deviation measurement mode CALCulate MATH subsystem 3 to control the comparator function CALClate LIMit subsystem The 4338B performs data processing in the order listed The CALCulate subsystem is logically between the SENSe subsystem and data output to either the bus or the display and is used with the SENSe subsystem the DATA subsystem and FETCh query COMMAND PARAMETER CALCulate 1 2 FORMat REAL MLINear NONE IMAGinary PHASe LS LIMit BEEPer CONDition FAIL PASS STATe lt Boolean gt CLEar FAIL LOWer DATA lt numeric_value gt STATe lt Boolean gt STATe lt Boolean gt UPPer DATA lt numeric_value gt STATe lt Boolean gt MATH EXPRession CATalog NAME DEV PCNT STATe lt Boolean gt PATH 5 10 GPIB Reference 4338B CALCulate Subsystem CALCulatel FORMat REAL MLINear CALCulate2 FORMat NONE IMAGnary PHASe LS Sets or queries the measurement parameter For information on selecting measurement parameters refer to Table 5 2 This command works with the SENSe subsystem The 4338B measures the DUT s vector impedance value using the method specified by the SENSe subsystem After the measurement the scalar measurement parameter is calculated from the vector value as specified by the CALClate 1 2 FORMat command The
169. s ALARM INDEX EOM COM2 L600B003 Figure B 2 Handler Interface Control Output Signals Diagram Handler Interface Installation B 3 Electrical Characteristics 4338B Input Signals The de isolated input signals are connected to the cathodes of the LEDs in the opto isolators The anodes of the LEDs are powered by an external voltage source EXT DCV2 The OFF state voltage high level of the dc isolated input signals depends on the pull up voltage selected by a switch on the main board The electrical characteristics of the signals are listed in Table B 2 A diagram for the input signals is shown in Figure B 3 Table B 2 Handler Input Electrical Characteristics Signal Input Voltage Input Current Low Circuit Pull up Voltage Common Low High 5V 12v 15V EXT TRIG lt 1 V 5 to 15 V 8 7 mA 10 5 mA 13 5 mA COM2 IKEY LOCK lt 1 V 5 to 15 V 7 7 mA 10 8 mA 13 6 mA COM2 Handler Interface Connector A1 Main Board EXT DCV2 s EXT TRIG re S2 93 KEY LOCK LB0EB002 Figure B 3 Handler Interface Input Signal Diagram B 4 Handler Interface Installation 4338B Tools and Fasteners Setting Up the Handler Interface Board Before using the handler interface connect the pull up resistors to enable the output signals and set the
170. selection decides the measurement parameter displayed by the 4338B and also the data processed by CALCulate LIMit CALCulate MATH or DATA subsystem commands CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter REAL real part of impedance IMAGinary imaginary part of impedance MLINear absolute value of impedance PHASe phase of impedance LS equivalent series inductance NONE none Note You cannot set CALC1 FORM and CALC2 FORM to combinations not specified in i Table 5 2 Y Table 5 2 Measurement Parameter Selection Parameters CALC1 FORM CALC2 FORM R REAL NONE R L REAL LS R X REAL IMAGinary Z Z MLINear PHASe CALCulate 1 2 LIMit BEEPer CONDition FAIL PASS Defines comparator output to the beeper CALCulatel selects the primary parameter CALCulate2 selects the secondary parameter FATL emits a beep when the comparison result is FAIL High or Low PASS emits a beep when the comparison result is PASS In This command is effective when SYSTem BEEPer STATe command is set to ON and CALCulate 1i 2 LIMit BEEPer STATe command is set to ON Query response is FAIL PASS Note The comparator output states of both parameters are linked together So the i CALCulate 1 2 LIMit BEEPer command toggles the comparator function of Y both parameters PASS or FAIL GPIB Reference 5 11 4338B CALCulate 1 2 LIMit BEEPer STATe ON OFF 1 0
171. son capable of rendering first aid and resuscitation is present DO NOT Substitute Parts Or Modify Instrument Because of the danger of introducing additional hazards do not install substitute parts or perform unauthorized modifications to the instrument Return the instrument to a Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained 4338B Dangerous Procedure Warnings Warnings such as the example below precede potentially dangerous procedures throughout this manual Instructions contained in the warnings must be followed Warning Dangerous voltages capable of causing death are present in this instrument Use extreme caution when handling testing and adjusting this instrument Safety Symbols General definitions of safety symbols used on equipment or in manuals are listed below gt pho Warning Caution Note Y Instruction manual symbol the product is marked with this symbol when it is necessary for the user to refer to the instruction manual Alternating current Direct current On Supply Off Supply In position of push button switch Out position of push button switch Frame or chassis terminal A connection to the frame chassis of the equipment which normally include all exposed metal structures This Warning sign denotes a hazard It calls attention to a procedure practice condition or the like
172. st time m Auto Measurement Mode When performing gross continuity testing where the test signal level is not a significant factor in the test the auto measurement function allows the 4338B to select the appropriate test signal level and measurement range 1 2 Getting Started 4338B Overview Accessories Available 16338A Test Lead Set 16005B Kelvin Clip Lead 0 4 m with large clip 16005C Kelvin IC Clip Lead 0 4 m IC clip 16006A Pin Type Probe Lead 0 4 m 16007A Alligator Clip Leads 0 4 m with 2 red clips 16007B Alligator Clip Leads 0 4 m with 2 black clips 16143B Mating Cable 0 6 m 16064B LED Display Trigger Box pass fail display and trigger Getting Started 1 3 Overview 4338B Front Panel This section gives a guided tour of the 4338B s front panel e For a detailed description of each key s function see Chapter 3 e Each description starting with Shift is the secondary function of the key which is available by pressing the BLUE shift key see 32 10 12 13 13 11 12 13 14 15 16 17 LDOE1100 A338B 1 ENTRY Do MILL TOHNNETER am adrs Min Mao ED CMI CIC 18 Stent Med Long lat Man xt aid Fut Corte Qu ak Ant Kee pabgouremant Botti E y nt e a io A EE E J E E JEFE on al Heas
173. standard operation status group lt numeric_value gt is numeric decimal expression of the contents of the register in lt NR1 gt format Query response is a decimal expression of the contents of the register in lt NR1 gt format 5 26 GPIB Reference 4338B STATus Subsystem STATus PRESet Clears the OPERation and QUEStionable register groups Both the event and enable registers are cleared no query STATus QUEStionable EVENt Returns the contents of the event register of the standard questionable status group query only Query response is a decimal expression of the contents of the register in lt NR1 gt format The 4338B has no operation to report the event to the questionable status event register all of whose bits are always 0 STATus QUEStionable CONDition Returns the contents of the condition register of the standard questionable status group Query only Query response is a decimal expression of the contents of the register in lt NR1 gt format The 4338B has no operation to report the event to the questionable status condition register all of whose bits are always set to 0 STATus QUEStionable ENABle lt numeric_value gt Sets or queries the enable register of the standard questionable status group lt numeric_value gt is numeric decimal expression of the contents of the register Query response is a decimal expression of the contents of the register in lt NR1 gt format GPIB Re
174. t SRQ oaoa a a a a Status Byte Resister a a a a Standard Event Status Register o a a a a a a a a a e Standard Operation Status Group oaoa a e e a a a Operation Status Register a a a a Questionable Status Register a a a a a Trigger System ww we 4338B Trigger System Configuration Idle State Initiate State a a A Event Detection State Sequence Operation State a a a a a a Data Transfer Format ASCII Format aoaaa L REAL Format aaa a 6 Application Measurement Introduction a a a Measuring Contact Resistance of Relays or Switches oaoa aoa a N Measuring Internal Resistance of Batteries 04 Contents 6 5 28 5 28 5 29 5 29 5 30 5 30 5 30 5 30 5 30 5 31 5 31 5 31 5 31 5 31 5 31 5 31 5 31 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 33 5 33 5 33 5 33 5 34 5 34 5 35 5 36 5 37 5 38 5 38 5 39 5 39 5 39 5 40 5 40 5 40 5 41 5 41 5 42 Measurement Basics Introduction Cc SHORT Correction Measurement Range Dry Circuit Loop Extending Test Leads General Information Introduction Specifications Measurement Parameter Measurement Conditions Measurement Range Measurement Accuracy Measurement Support Functions General Supplemental Performance Characteristics Maintenance Introduction Test Equipment Performance Tests Introduction Test Equipment Calculation Sheet o Performance Test
175. t idle y RST initiate TRIG Event Detection Sequence Measurement Operation BUESOTT Figure 5 6 Trigger System Configuration Figure 5 6 shows the logical configuration of the 4338B s trigger system Each undashed block is called a trigger state The 4338B moves between adjacent trigger states depending on its condition The power ON state is called the idle state You can force the 4338B to the idle state using the ABORt or RST commands The initiate and TRIGger Event Detection state causes the 4338B program to branch when specified conditions are met The Sequence Operation state signals the instrument hardware to take a measurement and then listens for confirmation that the measurement has been taken Idle State The trigger system remains in the idle state until it is initiated by INITiate IMMediate or INITiate CONTinuous ON Once one of these conditions is satisfied the trigger system exits downward to the initiate state Note that RST sets INITiate CONTinuous OFF GPIB Reference 5 39 Trigger System Initiate State 4338B If the trigger system is on a downward path it travels directly through the initiate state without restrictions If the trigger system is on an upward path and INITiate CONTinuous is ON then it exits downward to an event detection state If the trigger system is on an upward path and INITiate CONTinuous is OFF then it exits upward to the idle state
176. t annunciator v is ON This means the 4338B is in the remote mode 4 2 Remote Operation 4338B Getting Started Returning to the Local Mode When you press a key on the 4338B s keyboard while operating in remote the 4338B does not respond This is because the 4338B is in remote as indicated by the display s Rmt Ad annunciator and is ignoring all front panel inputs but the key To return the 4338B to the Ad Local mode press the ici Query Commands There are several commands in the alphabetic command directory that end with a question mark These commands are called query commands because each returns a response to a particular question In addition to the queries described above you can create others by appending a question mark to most commands Getting Data from the 4338B The 4338B can output readings and responses to query commands As an example have the 4338B generate a response to a query command by sending OUTPUT 717 IDN When you send a query from remote the 4338B does not display the response as it did when you executed the command from its front panel Instead the 4338B sends the response to its output buffer The output buffer is a register that holds a query response or data for a single measurement until it is read by the computer or replaced by new information Use the computer s input statement to get the response from the output buffer For example the following program reads the response
177. t key again The Shift annunciator v is displayed when the BLUE shift key is toggled to the active mode Function Reference 3 9 Front Panel 4338B Engineering units Key The Engineering units key enters engineering units The available engineering units are f femto x 10715 k kilo x 10 p pico x 10712 M mega x 10 n nano x 107 G giga x 10 u micro x 107 T tera x 10 2 m milli x 1073 Press E the unit is displayed in increasing order Press E the unit is displayed in decreasing order Back Space Key The Back Space key deletes a single preceding character of an input value Minimum Key The Minimum key enters the minimum value during a setting operation Maximum Key Max The Maximum key enters the maximum value during a setting operation Comparator Key 1 The Comparator key toggles the comparator function ON and OFF The default comparator function is OFF The Comparator distinguishes whether or not the measurement result is within the upper and lower comparator limits for primary and secondary measurement parameter When the comparator function is ON the Comprtr On annunciator v will be displayed The comparison results output is assigned as follows Destination Condition Comparison Display HIGH IN LOW N C Handler Interface HIGH IN LOW N C Beep FAIL mode HIGH LOW N C PASS mode IN Where HIGH greater than the upper limit IN between the upper limit a
178. terface triggers a measurement INTernal makes free running continuous measurements MANual The 4338B performs a measurement in response to the front panel trigger key being pressed Query response is BUS EXTernal INTernal MANual TRIGger SEQuence2 DELay lt numeric_value gt MS S Sets or queries the trigger delay time lt numeric_value gt is numeric O to 9999 ms 1 ms resolution Default is O s MAXimum 9999 ms MIMimum 0 ms The following suffixes can be used with lt numeric_value gt Ss MS ms 5 30 GPIB Reference 4338B OPC Common Commands CLS The CLS clear status command clears the status byte register the operation status event register the questionable status register and the standard event status register ESE lt numeric_value gt Sets the bits of Standard Event Status Enable Register ESE The ESE Event Status Enable query reads the bits in the standard event status enable register Query response is the decimal expression of the contents of the register in lt NR1 gt format ESR The ESR standard event status register query returns the contents of the standard event status register Query response is the decimal expression of the contents of the register in lt NR1 gt format IDN The IDN identification query returns an identification string which consist of 4 fields separated by commas Query response is lt Field 1 gt lt Field 2 gt lt Fiel
179. th these precautions or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment In addition it violates safety standards of design manufacture and intended use of the instrument The Agilent Technologies assumes no liability for the customer s failure to comply with these requirements Note 4338B comply with INSTALLATION CATEGORY II and POLLUTION DEGREE 2 i in IEC1010 1 4338B are INDOOR USE product Y Note LEDs in 4338B are Class 1 in accordance with IEC825 1 i CLASS 1 LED PRODUCT Ground The Instrument To avoid electric shock hazard the instrument chassis and cabinet must be connected to a safety earth ground by the supplied power cable with earth blade DO NOT Operate In An Explosive Atmosphere Do not operate the instrument in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel Do not replace components with the power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power and discharge circuits before touching them DO NOT Service Or Adjust Alone Do not attempt internal service or adjustment unless another per
180. the ESE and ESR commands in GPIB Commands Power On User Request Command Error Execution Error Deveice Dependent Error Query Error Request Control Operation Complete Standard Event Status Register ESR q aD eal i no o to Logical OR KRKRA ARA o amp Standard Event Status Enable Register ESE 7 6 5 4 Summary Message Event Summary Bit ESB Bit 5 of Status Byte Register Figure 5 4 Standard Event Status Register Table 5 4 Standard Event Status Register Assignments Bit No Bit Weight Description 7 128 Power On Bit This bit is set when the 4338B has been turned OFF and then ON again since the last time this register was read 6 always O zero 5 32 Command Error Bit This bit is set if the following the command errors occur eAn IEEE 488 2 syntax error occurred eThe 4338B received a Group Execute Trigger GET inside a program message 4 16 Execution Error Bit This bit is set when a parameter of a GPIB command was outside of its legal input range or is otherwise inconsistent with the 4338B s capabilities 3 8 Device Dependent Error Bit This bit is set when so many errors have been occurred that the error queue is full 2 4 Query Error Bit This bit is set to 1 when reading data from the output buffer and no data was present or when the data was lost
181. tion Query response to lt numeric_value gt is always a numeric value a lt Boolean gt represents a single binary condition that is either ON or OFF lt Boolean gt allows the following parameters ON OFF In a program message 1 0 In a program message and query response E lt sensor_function gt and lt data_handle gt are string parameters which contain ASCII characters A string must begin with a single quote ASCH 39 decimal or a double quote ASCII 34 decimal and end with the same character The quote to mark the beginning and end of the string is called the delimiter You can include the delimiter as part of the string by typing it twice without any characters in between Example of lt sensor_function gt FIMPedance 10 OUTPUT Meter FUNC FIMP using single quote 20 OUTPUT Meter FUNC FIMP using double quote Query response is the string between the double quote delimiters Suffix When a command has a specified suffix the suffix multiplier and suffix units The suffix multiplier must be used with the suffix unit can be used with parameters as follows Table 5 1 Suffix Multiplier Definition Mnemonic Available Suffix 103 Kilo Kk A 103 Milli M OHM 105 Micro U S For example 10 OUTPUT Meter TRIG DEL 30MS 30MS s a parameter which means 30 ms The suffix is optional and can be omitted The suffixes available for the commands are described in the reference for each co
182. to the root The path settings are changed as follows Message Terminator A message terminator such as lt new line gt character sets the current path to the root Colon When a colon is placed between two command mnemonics the colon moves the current path down one level on the command tree When the colon is the first character of a command it specifies the following command mnemonic is a root level command Semicolon A semicolon separates two commands in the same message without changing the current path Common commands such as RST are not part of any subsystem The 4338B interprets them in the same way regardless of the current path setting Figure 5 1 shows examples of how to use the colon and semicolon to navigate efficiently through the command tree AA BB cc DD EE FF GG HH JJ pp 1 AA CC set t path w D N ets current pa aan to ROOT 2 E IN N No change to current path y 3 AA DD HH JJ D Set current path R 2 OW D DOWN one level 4 AA BBIEE AA DD JJ Figure 5 1 Proper Use of the Colon and Semicolon In Figure 5 1 notice how proper use of the semicolon can save typing Sending this message AA BB EE FF GG Is the same as sending these three messages AA BB EE AA BB FF AA BB GG 5 4 GPIB Reference 4338B Program Message Syntax Program Message Syntax This section provides an example of constructing a SCPI program message A program message is the message s
183. transfer format using FETC command Proper Use of the Colon and Semicolon 2 4 Status Reporting Structure Status byte Register a a a a Standard Event Status Register e o Standard Operation Status Group Structure Trigger System Configuration Inside an Event Detection State ao aoa a e NRI Format aa a NR2 Format aoa a NR3 Format aaa a Real Data Format Measuring Contact Resistance a a a a a Measuring Internal Resistance of Batteries 0a a a a a Application Sample Program SHORT Correction Test Lead Extension Test Signal Frequency Accuracy Test Setup 2 ee Resistance Measurement Accuracy Test Setup 0 0 22824 Test Signal Level Functional Test Setup o en Handler Interface Functional Test Setup Handler interface Output Order Handler Interface Comparison Output Signals Diagram 1 11 1 12 1 19 3 2 3 4 3 7 3 14 3 14 3 16 3 18 3 20 3 20 3 21 3 22 4 4 4 11 4 12 Contents 9 B 2 Handler Interface Control Output Signals Diagram 2 oa a a a a B 3 Handler Interface Input Signal Diagram B 4 Al Main Board Location Contents 10 Tables 1 1 3 1 3 2 3 3 3 4 5 1 5 2 5 3 5 4 5 5 5 6 5 7 8 1 9 1 9 2 9 3 A 1 A 2 B 1 B 2 B 3 C 1 C 2 C 3 Line Voltage Selection 2 1 1 a a a 1 12 Line Voltage
184. ts The statements used to operate the 4338B in remote depend on the computer and the programming language being used In particular you need to know the statements the language uses to input and output information For example the input statements for the HP 9000 series 200 or 300 BASIC language are ENTER or TRANSFER The output statement is OUTPUT Read your computer manuals to find out which statements you need to use Reading the GPIB Address Before you can operate the 4338B in remote you need to know its GPIB address factory setting 17 To check the address press 7 ii A typical display is Shift LD002307 R 12 345m Q LVL AUTO HP IB Adrs 17 AVG Short Med Long Int Man Ext Hold Hold Comprtr Cont Talk Rint key Measurement Settings Meas Time Trigger Range Leve In Chk Only Lock The displayed response is the device address When sending a remote command you append this address to the GPIB interface s select code normally 7 For example if the select code is 7 and the device address is 17 the appended combination is 717 Every device on the GPIB bus must have a unique address You can assign new GPIB addresses Sending a Remote Command To send a remote command to the 4338B combine the computer s output statement with the GPIB select code the device address and finally the 4338B command For example to reset the 4338B send OUTPUT 717 RST Notice that the Rm
185. ue is not 1 the comparator function is OFF reads out the measurement status measured primary parameter result and measured secondary parameter result Reads out the message terminator at the end of the data Displays the measurement status measured primary parameter result and measured secondary parameter result If the Comp_flag value is 1 the comparator function is ON displays the comparator sorting result If the Comp flag value is not 1 the comparator function is OFF displays Comparator OFF 4 16 Remote Operation 4338B 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 Reading Out Measured Result DIM Buff 9 Digit 1 Read form 9 Num of byteS 9 REAL Pri para Sec para REAL Meas stat Comp1 Comp2 INTEGER Comp_flag Cond_reg ASSIGN Binary TO 717 FORMAT OFF ASSIGN Agt4338b TO 717 OUTPUT Agt4338b FORM REAL OUTPUT Agt4338b INIT CONT ON OUTPUT Agt4338b TRIG SOUR BUS OUTPUT Agt4338b CALC LIM STAT ENTER Agt4338b Comp flag Triggering and data read REPEAT OUTPUT Agt4338b STAT OPER COND ENTER Agt4338b Cond reg UNTIL BlT Cond reg 5 OUTPUT Agt4338b TRG ENTER Agt4338b USING A Buff ENTER Agt4338b USING A Digit Read_form amp Digit a
186. urement functions and some general purpose functions Each subsystem is a set of commands that roughly corresponds to a functional block inside the instrument For example the SOURce subsystem contains commands for signal generation while the STATus subsystem contains commands for accessing status registers Subsystem commands have a hierarchical structure called a command tree which consist of several key words separated by a colon between each word GPIB Reference 5 1 GPIB Commands Subsystem Commands 4338B Command Parameter Note ABORt no query CALCulate 1 2 FOR Mat REAL MLINear NONE IMAGinary PHASe LS LI Mit BEEPer CONDition FAIL PASS STATe lt Boolean gt CLEar no query FAIL query only LOWer DATA lt numeric_value gt STATe lt Boolean gt STATe lt Boolean gt UPPer EDATA lt numeric value gt STATe lt Boolean gt MATH EXPRession CATalog query only NAME DEV PCNT STATe lt Boolean gt PATH query only DATA DATA REFI REF2 lt numeric value gt DATA BUF 1 BUF2 query only FEED BUF1 BUF2 lt data_handle gt CONTrol BUF1 BUF2 ALWays NEVer POINts BUF1 BUF2 lt numeric_value gt DISPlay WINDow STATe lt Boolean gt TEXT1 DIGit 3 4 5 PAGE 12 TEXT2 PAGE 1 2 3 4 FETCh query only FORMat DATA ASCi REALI 64 INITiate CONTinuous lt Boolean gt IMMediate no query SENSe AVERage COUNt lt numeric_value gt STATe lt B
187. y a comma For example POINts command of DATA subsystem is followed by two parameters as follows DATA POINUparameter parameter Parameter Types SCPI defines different data formats for use in program messages and query responses The 4338B accepts commands and parameters in various formats and responses a particular query in a predefined and rigid format Each command reference contains information about available parameter types for the individual commands a lt numeric_value gt is used in both common commands and subsystem commands lt numeric_value gt represents numeric parameter as follows GPIB Reference 5 5 Program Message Syntax 4338B 100 no decimal point required 100 fractional digits optional 1 23 235 leading signs allowed 4 56eL3 space allowed after e in exponential 7 89E 01 use either E or e in exponential 5 digits left of decimal point optional The 4338B setting programmed with a numeric parameter can assume a finite number of values so the 4338B automatically rounds off the parameter For example the 4338B has programmable line frequencies of 50 or 60 Hz If you specified 50 1 it would be rounded off to 50 The subsystem commands can use extended numeric parameters Extended numeric parameters accept all numeric parameter values and other special values for instance MAXimum MINimum or UP DOWN The special values available for a command are described in the each command s reference descrip

Agilent 4338B Milliohmmeter Operation Manual

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