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Chroma 61501, User Manual

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Chroma 61501 User Manual Download Page 64

Programmable AC Source 61501/61502/61503/61504 User’s Manual 

4-8 

In above step B of EXTERNAL Vref CALI., the user apply +5Vdc to Vref BNC connector from 
outer DC source.    Check the output voltage of AC source is about 106Vdc, then keyin the 
exact value of input Vref voltage (not AC source output) measured from DVM. 

 

 
Step B is the final step of EXTERNAL Vref CALI.    Press 

PAGE/EXIT

 to exit that page.    Then 

display will show as below.    Press 

ENTER

 to save the calibration result. 

 
 
 
 
 
 
 
 
 
 
 

   

              Press (ENTER) to save. 

       Press (PAGE/EXIT) not to save.  

    

Summary of Contents for 61501

Page 1: ...i Programmable AC Source 61501 61502 61503 61504 User s Manual ...

Page 2: ......

Page 3: ...Programmable AC Source 61501 61502 61503 61504 User s Manual Version 1 6 January 2010 ...

Page 4: ...t be held liable for errors contained herein or direct indirect special incidental or consequential damages in connection with the furnishing performance or use of this material CHROMA ATE INC No 66 Hwa Ya 1st Rd Hwa Ya Technical Park Kuei Shan 33383 Taoyuan County Taiwan Copyright Notices Copyright 2002 2010 Chroma ATE INC all rights reserved Reproduction adaptation or translation of this documen...

Page 5: ...be billed at cost Chroma assumes no responsibility for its product being used in a hazardous or dangerous manner either alone or in conjunction with other equipment High voltage used in some instruments may be dangerous if misused Special disclaimers apply to these instruments Chroma assumes no liability for secondary charges or consequential damages and in any event Chroma s liability for breach ...

Page 6: ...e exceeds the threshold level specified in the standards of SJ T 11363 2006 and EU 2005 618 EC 1 Chroma is not fully transitioned to lead free solder assembly at this moment however most of the components used are RoHS compliant 2 The environment friendly usage period of the product is assumed under the operating environment specified in each product s specification Disposal Do not dispose of elec...

Page 7: ...v ...

Page 8: ...g wire or disconnect the wiring of protective grounding terminal Doing so will cause a potential shock hazard that may bring injury to a person FUSES Only fuses with the required rated current voltage and specified type normal blow time delay etc should be used Do not use repaired fuses or short circuited fuse holders To do so could cause a shock or fire hazard DO NOT OPERATE IN AN EXPLOSIVE ATMOS...

Page 9: ...bol indicates that the terminal must be connected to ground before operation of equipment WARNING The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met CAUTION The CAUTION sign denotes a ha...

Page 10: ...age during shift or transportation users can choose to install the enclosed rear panel protection plates 2 pieces as an option Installation Instruction 1 Remove the 4 screws from both sides of the rear panel Figure 1 2 Mount the protection plates with the screws included in the bag Figure 2 Figure 1 Figure 2 ...

Page 11: ...section of OUTPUT RELAY Modify the following chapters the figure 3 1 in the section of Operation through Keypad and RPG the definition of letters in the section of MAIN PAGE Output Setting and Measurement the content and notice in the section of RANGE CALIBRATION CHOICE PAGE in the section of MANUAL CALI Functional List the waveform and table list in the section of Appendix B Built in Waveforms Ma...

Page 12: ...x the description in the section of Output Voltage and Voltage Measurement Calibration the content of CE Declaration ...

Page 13: ... 3 4 3 4 CHOICE PAGE Functional List Choice 3 5 3 5 SETUP Functional List 3 5 3 5 1 RANGE 3 6 3 5 2 Vac LIMIT 3 7 3 5 3 Vdc LIMIT Vdc LIMIT 3 7 3 5 4 I LIMIT DELAY 3 8 3 5 5 OUTPUT RELAY 3 9 3 5 6 BUZZER 3 9 3 5 7 DATALOCK 3 9 3 5 8 Is START Is INTERVAL 3 10 3 6 CONF Functional List 3 10 3 6 1 REMOTE INHIBIT 3 11 3 6 2 EXT V COUPLE 3 12 3 6 3 WAVEFORM GENERATOR 3 13 3 6 4 POWER ON STATUS 3 14 3 6 ...

Page 14: ...est Troubleshooting 7 1 7 1 General 7 1 7 2 Self Test 7 1 7 3 Troubleshooting 7 2 8 Remote Operation 8 1 8 1 General Information 8 1 8 1 1 Setting the GPIB Address and RS 232C Parameters 8 1 8 1 2 Wire Connection of RS 232C 8 1 8 2 The GPIB Capability of the AC Source 8 2 8 3 Introduction to Programming 8 3 8 3 1 Conventions 8 3 8 3 2 Numerical Data Formats 8 3 8 3 3 Boolean Data Format 8 3 8 3 4 ...

Page 15: ...on z Local operation from the keypad on the front panel z Remote operation via GPIB or RS 232C interface z Protection against Over power Over Current Over temperature Fan fail z Temperature controlled fan speed z Built in output isolation relays B Input Output z Selective output voltage with full scale of 150V 300V 600V Auto where 600V is for A615003 fixture only z Remote control by the use of ana...

Page 16: ...A 4A 2A 6A 3A 8A 4A OUTPUT IMPEDANCE Range 0 0Ω 200uH 1 0Ω 1 0mH HARMONICS SYNTHESIS SIMULATION Bandwidth 50Hz 60Hz 40 order INPUT RATING Voltage range 90 250V 90 250V 90 250V 90 250V Frequency range 47 63 Hz 47 63 Hz 47 63 Hz 47 63 Hz Current 8A Max 16A Max 21A Max 28A Max Power factor 0 97 Min 0 98 Min 0 98 Min 0 98 Min MEASUREMENT Voltage Range 150V 300V 150V 300V 150V 300V 150V 300V Accuracy 0...

Page 17: ...class A CE Remarks 1 Maximum distortion is tested on output 125VAC 150V RANGE and 250VAC 300V RANGE with maximum current to linear load 2 Load regulation is tested with sinewave and remote sense 3 Efficiency is tested on input voltage 110V 1 4 Names of Parts 1 4 1 Front Panel 1 2 3 4 5 6 7 8 9 10 11 Figure 1 1 Front Panel ...

Page 18: ...PAGE the uses can save the output setting see 3 8 1 If pressing the key on CHOICE PAGE the user can save system data see 3 8 2 5 Õ or RECALL Backspace and Minus command key Pressing this key will erase the keyin number Or it may show if no number is in front of cursor Under shift mode pressing the key on MAIN PAGE the user can recall the output setting see 3 8 1 If pressing the key on CHOICE PAGE ...

Page 19: ... PWM are for AC source parallel connectivity only SYNC transfers a pulse signal synchronously when output changes It also sends synchronizing signal for 3 phase mode operation 7 Output Connector This connector outputs power to the loading device 8 Remote Sense Connector It senses directly at the terminals of the load to eliminate any voltage drop on the connecting cable Make sure of connecting the...

Page 20: ......

Page 21: ...Voltage Range 90 250 Vac single phase Input Frequency 47 63 Hz Max Current 61501 8 A 61502 16 A 61503 21 A 61504 28 A CAUTION AC source may be damaged if it is operated at an input voltage that is outside its configured input range 2 3 2 Input Connection The input terminal is located at the bottom of the instrument rear panel The rated withstand temperature of power cord must be at least 85 C or a...

Page 22: ...to the GND terminal must be connected to the earth ground Under no circumstances shall this AC source be operated without an adequate ground connection Installation of the power cord must be done by a professional and in accordance with local electrical codes Figure 2 1 Input Connection Figure 2 2 Input Terminal Cover ...

Page 23: ...urate voltage as programmed at the load by automatically compensating the output voltage drop over the connecting cable Remove the iron chip from the SN and SL terminals connect the remote sense to the load as shown in Figure 2 3 Because the sensing leads carry only a few milliamperes the wires for sensing are much lighter than the load leads The sensing leads are part of the feedback path of the ...

Page 24: ...h test item indicating that the item is no problem It takes about six seconds to complete the routines of the self test Then the display shows the versions of software as below If any failure is detected on a certain item an ERROR CODE will be shown at the right side of that item The error messages and trouble shooting are shown on 7 2 The test item 3 REMOTE shows EMPTY if the option board with GP...

Page 25: ...n power on self test procedure Please see 7 2 2 The inner digital circuit of AC source maybe not reset if turn off power then turn on immediately Waiting more than 3 seconds is suggested to turn on power after turning off 2 7 I O Connectors Option Figure 2 4 Option Board ...

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Page 27: ...2 6 the display will show MAIN PAGE as below Press to move cursor to choose the item Use numeric and decimal keys or RPG to set value then press ENTER to confirm The user can press PAGE EXIT to change to CHOICE PAGE as below Or press PAGE EXIT again to return to MAIN PAGE In CHOICE PAGE the user can press numeric key then ENTER to choose the functional lists After entering each functional list pre...

Page 28: ...Programmable AC Source 61501 61502 61503 61504 User s Manual 3 2 ...

Page 29: ...Local Operation 3 3 Figure 3 1 ...

Page 30: ...s L 150V RANGE H 300V RANGE H 600V RANGE A AUTO RANGE The definitions of output setting parameters Vac It is the AC composition of output voltage in Volts F It is the output frequency in Hertz Vdc It is the DC composition of output voltage in Volts Press OUT QUIT then the AC source output the voltage set in Vac F Vdc Press OUT QUIT again then the AC source quit the output voltage When COUPLE AC DC...

Page 31: ...t in Amperes Is It is I surge and only measured from the occurrence of output transition as defined in 3 5 8 VA It is Apparent Power in Watts and its calculation formula Vrms Irms VAR Its calculation formula VA P 2 2 3 4 CHOICE PAGE Functional List Choice If displays on MAIN PAGE or on functional list press PAGE EXIT to change to CHOICE PAGE as below Users can press 0 9 or RPG to choose operationa...

Page 32: ...red To set the range of output voltage as AUTO as below 1 Move the cursor to the command line of Range Range 300V_ 2 Turn the RPG to change the option from 300V to AUTO then press ENTER Range AUTO The AC source will set output voltage as 0 V first in order to eliminate voltage spike when range changes Then it will set output voltage as set value It may cause UUT to shut down or get bad if the outp...

Page 33: ...of Vdc on MAIN PAGE The user can set both on SETUP functional list see 3 5 The setting value of Vdc cannot be higher than Vdc LIMIT or can not be lower than Vdc LIMIT Vdc LIMIT must be positive or zero Vdc LIMIT must be negative or zero This command is about user programmable protection not hardware protection The procedures of setting Vdc LMT 200V Vdc LMT 50V are described as below 1 Move the cur...

Page 34: ...ble protection not hardware protection The procedures of setting Current limit 4A Delay time 1 sec are described as below 1 Move the cursor to the command line of I LIMIT A I LIMIT A 0 00_ DELAY S 0 0 2 Press 4 then press ENTER to change the value to 4 00 I LIMIT A 4_ DELAY S 0 0 3 The cursor moves to the command line of DELAY S automatically I LIMIT A 4 00 DELAY S 0 0_ 4 Press 1 ENTER to change t...

Page 35: ...the life of the AC SOURCE it powered off under outputting status is prohibited strongly 3 5 6 BUZZER The buzzer of the AC source beeps when the user presses the keypad on the front panel or turns the RPG knob If the user does not need it please turn it off The user can set BUZZER on SETUP functional list see 3 5 To turn off the buzzer as follows 1 Move the cursor to the command line BUZZER ON_ of ...

Page 36: ...of measurement time is Is INTERVAL The user can set both on SETUP functional list see 3 5 The procedures of setting Is START 10 ms Is INTERVAL 200 ms are described as below 1 Move the cursor to the command line Is START 0 0_ ms of Is START 2 Press 1 0 then press ENTER to change the value to 10 0 Is START 10 0 ms 3 The cursor moves to the command line of Is INTERVAL automatically Is INTERVAL 50 0_ ...

Page 37: ... is HIGH TRIG The output of the AC source will be disabled if TTL signal is LOW and will remain the state even TTL signal becomes HIGH The user has to press OUT QUIT to restart the AC source output EXCITE When users run LIST PULSE STEP SYN INTERHAR mode see chapter 5 the trigger on and trigger off commands will be triggered form this TTL signal A low active pulse signal at least 60us triggers the ...

Page 38: ... dc 10 Vdc 424 2 Vdc 300V RANGE Vout dc Vref dc 10 Vdc 212 1 Vdc 150V RANGE or Vout ac Vref ac 7 072 Vac 300 Vac 300V RANGE Vout ac Vref ac 7 072 Vac 150 Vac 150V RANGE Example 1 set Vout to 100Vdc 1 Select RANGE 300V in SETUP functional list apply external V 2 357Vdc the Vout 100Vdc 2 Select RANGE 150V in SETUP functional list apply external V 4 715Vdc the Vout 100Vdc Example 2 set Vout to 100Vac...

Page 39: ...er 1000Hz it might cause AC source damage The user should obey the formula if F 1000Hz Vref pk pk V F Vref Hz 10000 VHz 2 Because of the bandwidth limitation of AC source the output may distortion Especially when external V reference consists of high frequency composition 3 6 3 WAVEFORM GENERATOR The AC source provides the user with two independent sets of waveforms A and B Both of the waveforms i...

Page 40: ...source damage 2 Because of the bandwidth limitation of AC source the output may distortion Especially when external V reference consists of high frequency composition 3 6 4 POWER ON STATUS The AC source allows the user to set the status of the output when power is switched on The user can set POWER ON STATUS on CONF functional list see 3 6 After setting the user should save them before powering of...

Page 41: ...ation through the RS 232C bus Communication protocol is set as follows To set parity ODD baud rate 19200 1 Move the cursor to the command line of PARITY BAUD 9600 PARITY NONE_ 2 Turn RPG to select ODD then press ENTER BAUD 9600 PARITY ODD_ 3 The cursor moves automatically to the setting position of BAUD BAUD 19200 PARITY ODD Turn RPG to select 19200 then press ENTER The options of baud rate are 96...

Page 42: ...rsor to the command of COUPLE COUPLE AC DC_ 2 Turn RPG to change the option from AC DC to AC then press ENTER COUPLE AC The DC mode of AC source is applied to doing some voltage tests The AC source has not such many output capacitors some features like voltage ripple load transient are not as good as DC source But it can supply positive and negative DC voltage without changing output connector PAR...

Page 43: ...put voltage interruption P S Normally the DC source will change to C C mode then the output voltage slow down to 0V 3 Another major reason is it cannot accept add increase large capacitor more than 20uF at output side directly It may cause output unstable and damage AC source For solving above weak point we suggest that add a special fixture for sure and protection 150uH 8uH L N 1uF 630V C1 47K 10...

Page 44: ...emnant voltage to hit user when output off But users need to consider about power consumption the discharger resistor power should be enough for it 3 7 2 OUTPUT DEGREE The AC source can control the transition angle of the waveform when it out or quit The user set DEG ON and OFF to achieve it in OUTPUT functional list see 3 7 The procedures of setting output phase angle DEGREE ON 90 and OFF 180 are...

Page 45: ...s low 100Vac it s possible to cause AC Source unstable especially when output current is large Users have to program the inductance to the target level slowly monitor the output voltage and listen the sound of AC Source whether there are abnormal high frequency voltage output or abnormal voice If instability happens disable the output impedance programming and use an external impedance network 3 7...

Page 46: ...ew rate when Vs DCs are too large 3 When user run OUT of AC source the output will follow the setting to final state But when user run QUIT the output will vary to 0 V immediately If user want to quit the output with the setting slew rate he must keyin 0 V then press ENTER 3 7 5 HIGH VOLTAGE OPTION For special request a new 600 Vac option will be added to the Range column in SETUP Function for set...

Page 47: ...ype connector see Appendix A it s the SLAVE For more information about the cable please consult your dealer The procedure of using THREE PHASE MODE 1 Connect the N terminals of AC source outputs For 3 phase Y connection 2 Connect the cable for synchronism 3 Power on all AC sources Keep all in output quit state 4 Set the 3 PHASE MODE MATER DEGREE 0 And set another AC source 3 PHASE MODE SLAVE DEGRE...

Page 48: ...1502 61503 61504 User s Manual 3 22 Figure 3 3 1 The DEGREE of MASTER is 0 and the DEGREE of SLAVE is 120 it means the SLAVE is 120 degree ahead of MASTER The DEGREE of SLAVE 2 is 240 it means the SLAVE is 240 degree ahead of MASTER ...

Page 49: ...ect L terminals of AC source outputs together even set the DEGREE 0 of SLAVE 3 For safety concern the 3 phase mode can t save to power on status 3 7 7 PARALLEL MODE When the power of one AC source is not enough to drive load it s allowed to parallel AC sources if they are the same model Users can set PARALLEL MODE on OUTPUT functional list see 3 7 The AC source setting as MASTER sends SCLK and PWM...

Page 50: ...ch at the same time To change parallel mode OFF to MASTER as below 1 Move the cursor to the command line of PARALLEL MODE PARALLEL MODE OFF_ 2 Turn RPG to change the option from OFF to MASTER then press ENTER PARALLEL MODE MASTER After checking PARALLEL MODE setting and RANGE setting confirm it 3 The cursor moves to the command line of CHECK OK automatically CHECK OK NO_ 4 Turn RPG to change the o...

Page 51: ...Setting The AC source offers nine channels for the user to save a set of frequently used Vac F Vdc and to recall them for later use For example in the MAIN PAGE see 3 3 keyin the output settings as below and save the settings to memory channel 5 Press SHIFT then PAGE EXIT to run the SAVE function The display will show as below The cursor stays in channel 1 The user can press 1 9 to select channel ...

Page 52: ...nel or use or press SHIFT then to change page to the destination The cursor stays in channel 2 after pressing 2 The display is shown as below Press ENTER the display returns to MAIN PAGE automatically And the output settings are Vac 120 F 60 Vdc 0 just as the settings saved in memory channel 2 CHOICE 1 9 PRESS ENTER TO SAVE 4 Vac 0 0 F 60 00 Vdc 0 0 5 Vac 230 0 F 50 00 Vdc 10 0 S 6 Vac 0 0 F 60 00...

Page 53: ...V F 60Hz Vdc is the setting value in MAIN PAGE as running the SAVE function 3 8 2 Save and Recall System Data The AC source offers three memory groups for the user to save system data and to recall them for later use The system data includes all parameters in function list like SETUP see 3 5 CONF see 3 6 and OUTPUT see 3 7 In the CHOICE PAGE see 3 4 press SHIFT then PAGE EXIT to run the SAVE funct...

Page 54: ...red on again Those saved into other memory groups must be recalled manually 3 9 Protection The AC source provides protection for software and hardware When protection is happened the AC source will quit the output and turn off the output relays then show the condition of protection in display If any protection is triggered to hold normal output please remove the errors then press ENTER to unlock t...

Page 55: ...nder the specific value INT DD It is inner DD power stage see 6 2 protection and means that the output voltage is over or under the specific value OUTPUT SHORT It is short protection and means that the output terminals are shorted INPUT FAIL It is power failure protection and means that the line input voltage is lower or higher than specification OVER TEMP It is over temperature protection and wil...

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Page 57: ...nts please refer to Figure 4 1 There are three items need to calibrate But it is not necessary to calibrate all at once User can just choose one item if needs Figure 4 1 4 2 MANUAL CALI Functional List Users can choose 4 MANUAL CALI in CHOICE PAGE to enter the calibration procedure Before showing the calibration items for safety reason user must enter password The password is shown in this manual ...

Page 58: ...es to CALIBRATION CHOICE PAGE as below after keying the right password V OUT AND MEAS output voltage and voltage measurement accuracy calibration I MEAS current measurement accuracy calibration EXT Vref external Vref calibration Enter Password _ You can get password in user s manual Enter Password You can get password in user s manual CALIBRATION CHOICE 1_ CALIB 1 V OUT AND MEAS 2 I MEAS 3 EXT Vre...

Page 59: ...fset variation is 400mV 0 40 C In this step A of V OUT AND MEAS ACCURACY CALI the user should keyin the AC source s DC output voltage measured by HP 34401A Digital Voltage Meter DVM in mV Then monitor the reading of DVM keyin the DC output voltage repeatedly until DC output is less than 10 mV 1 The Vdc offset may be positive or negative The positive of DVM connect to the line of AC source output a...

Page 60: ...tion procedure step by step step A step B Or it may cause output and measurement errors Then press SHIFT then to change to next step In above step C of V OUT AND MEAS ACCURACY CALI the user should not turn on the load Press ENTER then check the output voltage measured by DVM is about 15VAC This step is just to make sure the connection is correctly Then go to next step D Press ENTER check the outpu...

Page 61: ...ss ENTER to save the calibration results 1 Users can press PAGE EXIT to exit to the calibration choice page at every step 2 See the above display if press PAGE EXIT not to save the result the result of calibration still works until turn the power off 4 2 2 Current Measurement Calibration Users can enter CALIBRATION CHOICE page after pressing password see 4 2 Then press 2 ENTER to do the current me...

Page 62: ...ent is ok after applying load press ENTER then AC source will output 125VAC The output current will be 10 times of step B 16A Keyin the exact value of current measured by current meter The output current of step B and step C are shown as below Model Step B Step C 61501 500 VA 0 4 A 4 A 61502 1000 VA 0 8 A 8 A 61503 1500 VA 1 2 A 12 A 61504 2000 VA 1 6 A 16 A Step C is the final step of CURRENT MEA...

Page 63: ...ef calibration See detailed as below It is not necessary to do this item if no option board GPIB RS 232 and Vref board is installed In above step A of EXTERNAL Vref CALI short the external Vref input terminal to make input is 0V then the display shows the measured Vdc from AC source They are offset voltages produced by internal components Wait two seconds then press ENTER then Vdc 0V Then press SH...

Page 64: ... DC source Check the output voltage of AC source is about 106Vdc then keyin the exact value of input Vref voltage not AC source output measured from DVM Step B is the final step of EXTERNAL Vref CALI Press PAGE EXIT to exit that page Then display will show as below Press ENTER to save the calibration result Press ENTER to save Press PAGE EXIT not to save ...

Page 65: ... to compose different harmonic components to synthesize harmonic distorted wave shapes see 5 6 The AC source also can achieve interharmonics waveform a sweeping frequency superimposed on a static fundamental wave see 5 7 5 2 List Mode On CHOICE PAGE see 3 4 press 5 then ENTER choose the LIST functional list The waveform programming of LIST mode is the assembly of the SEQuences The output waveform ...

Page 66: ...status at present Press ENTER to trigger Then LCD shows status RUNNING and TRIG_OFF waiting for user to stop the LIST waveform output The LCD will shows STOP when the AC source executed all sequences and COUNT If the AC Source is in running status press OUT QUIT the output will quit waveform to zero voltage Then if press OUT QUIT again the AC source only out the waveform set in MAIN PAGE Users mus...

Page 67: ...SEQ 0 DEGREE 90 0 LIST Vs 20 0 Fs 50 00 DCs 0 0 Ve 80 0 Fe 50 00 DCe 0 0 S WAVE A TIME 75 0 ms T SEQ 1 DEGREE 0 0 LIST Vs 20 0 Fs 50 00 DCs 0 0 Ve 20 0 Fe 50 00 DCe 100 0 S WAVE A TIME 80 0 ms T SEQ 2 DEGREE 0 0 LIST Vs 20 0 Fs 50 00 DCs 0 0 Ve 100 0 Fe 400 00 DCe 0 0 S WAVE A TIME 100 0 ms T ...

Page 68: ...ER choose the PULSE functional list Press SHIFT then to change to next page COUNT 0 PULSE Vac 0 0 F 60 00 Vdc 0 0 DUTY 0 0 PERIOD 0 0 ms SHIFT ENTER to Execute T PAGE CHOICE 6_ 1 SETUP 2 CONF 3 OUTPUT 4 MANUAL CALI 5 LIST 6 PULSE 7 STEP 8 HAR 9 SYN 10 INTERHAR 75ms 80ms 100ms 90 SEQ 0 SEQ 1 SEQ 2 50V The output waveform ...

Page 69: ...E execution page The LCD shows _TRIG_ON is under action and STOP is the triggering status at present Press ENTER to trigger Then LCD shows status RUNNING and TRIG_OFF waiting for user to stop the PULSE waveform output The LCD shows STOP when the AC source executed all COUNT number If the AC Source is in output status press OUT QUIT the output will quit waveform to zero voltage Then if press OUT QU...

Page 70: ...e output waveform TRIG AUTO WAVE A PULSE DEGREE 90 0 SHIFT ENTER to Execute S COUNT 3 PULSE Vac 100 0 F 50 00 Vdc 0 0 DUTY 35 0 PERIOD 100 0 ms SHIFT ENTER to Execute T Vac 50 0 F 50 00 Vdc 0 0 L V 0 00 F 0 00 I 0 00 S P 0 0 PF 0 000 CF 0 00 T 35ms 65ms 100ms Pulse 1 Pulse 2 Pulse 3 100Vac 50Vac 90 50V ...

Page 71: ...MANUAL the way to trigger AUTO it will finish all COUNT number when trigger MANUAL the output waveform will change just one step for each execution WAVE A B to choose waveform see 3 6 3 DEGREE the output phase angle of each step Press SHIFT then ENTER to go to STEP execution page The LCD shows _TRIG_ON is under action and STOP is the triggering status at present Press ENTER to trigger Then LCD sho...

Page 72: ...xecution page When TRIG MANUAL the LCD shows TRIG_UP and TRIG_DOWN The output waveform is changed to the next step if TRIG_UP is selected The output waveform is changed back to last step if TRIG_DOWN is selected STEP mode example _TRIG_ON STOP STEP V 0 00 F 0 00 I 0 00 S P 0 0 PF 0 000 CF 0 00 T _TRIG_OFF RUNNING STEP TRIG_PAUSE V 0 00 F 0 00 I 0 00 S P 0 0 PF 0 000 CF 0 00 T _TRIG_CONTINUE PAUSE ...

Page 73: ... 2 CONF 3 OUTPUT 4 MANUAL CALI 5 LIST 6 PULSE 7 STEP 8 HAR 9 SYN 10 INTERHAR SOURCE I FREQ 60 Hz HAR TIMES SINGLE PARAMETER PERCENT SHIFT ENTER to measure TRIG AUTO WAVE A STEP DEGREE 90 0 SHIFT ENTER to Execute S 60ms 60ms 60ms Initial Step 1 Step 2 Step 3 40Vac 50Hz 0Vdc 50Vac 100Hz 20Vdc 60Vac 150Hz 40Vdc 70Vac 200Hz 60Vdc 50V 90 90 ...

Page 74: ...UE the data form of each harmonic order PERCENT the percentage of fundamental value VALUE the absolute value Press SHIFT then ENTER to execute harmonics measurement THD the total harmonic distortion of output wave DC the dc value of output wave Fundament the fundamental value of output wave Press SHIFT then to change to next page Press SHIFT then or to see other harmonic orders Press PAGE EXIT to ...

Page 75: ...mple COMPOSE VALUE 1 VALUE 2 PERCENT 1 PERCENT 2 the data form of each harmonic order VALUE the absolute value PERCENT the percentage of fundamental voltage Users totally can program 4 kinds of synthesized waveforms to execute Vac_fund the fundamental voltage The maximum value is limited by RANGE see 3 5 1 F_fund 50 60Hz the fundamental frequency Vdc the DC voltage adds to voltage waveform DEGREE ...

Page 76: ...to output SYN waveform directly The synthesized wave will shut down when press PAGE EXIT to exit SYN execution page 1 For practical use and to protect the power stage of AC Source the composing value or percentage of each order has to be restricted 2 order 10 value 150V or percentage 100 11 order 20 value 120V or percentage 50 21 order 30 value 80V or percentage 30 31 order 40 value 45V or percent...

Page 77: ...e the examples Fi_start the starting frequency of the sweeping wave The range is 0 01Hz 2400Hz Fi_end the ending frequency of the sweeping wave The range is 0 01Hz 2400Hz LEVEL the r m s magnitude of the sweeping wave in percentage of fundamental voltage set in MAIN PAGE TIME the time interval from Fi_start to Fi_end Fi_start 0 01 Hz INTERHAR Fi_end 2400 0 Hz LEVEL 0 0 TIME 0 00 sec SHIFT ENTER to...

Page 78: ... the AC Source is in output status press OUT QUIT the output will quit to zero voltage Then if press OUT QUIT again the AC source only out the waveform set in MAIN PAGE Users must press ENTER to trigger again Or if in quit status users can press ENTER to output interharmonics waveform directly The INTERHAR waveform will shut down when press PAGE EXIT to exit INTERHAR execution page For practical u...

Page 79: ...ower from the A D output It generates two isolated DC outputs for D A power stage The H board of D A inverter generates AC output through full bridge controlled by B board The D A power stage is through G board relays in parallel or series control to obtain more current and higher voltage B board is identified as DSP processor and D A controller The DSP processor is applied to control output frequ...

Page 80: ...Measure I Board G Board System Power EMI Filter D A Power Stage D D Power Stage Relay and EMI Filter A D Power Stage Fan Control Stage D Board E Board C Board B Board Control Measure A Board K Board LCD Display Input Power Output Power TTL Signal GPIB RS 232 EXT V Key Connector F Board H Board ...

Page 81: ...nd bit 2 are 1 So ERROR 05 means SRAM error and DATA error occurs Error Message Description Action SRAM error SRAM test fail Consult your dealer for assistance CODE error Program code test fail Consult your dealer for assistance DATA error Data in Flash or EEPROM test fail Consult your dealer for assistance Communication error Can not communicate 1 Power off the AC source wait three seconds power ...

Page 82: ... POWER protection OPP The output power is over specification Remove the over power or lower down output voltage OVER CURRENT protection OCP The output current is over specification or I LIMIT Remove the overload or relax the I LIMIT OUTPUT SHORT protection 1 The output is shorted 2 External current reverse 1 Remove the short 2 Remove the load INPUT FAIL protection UVP The AC source line input volt...

Page 83: ...e AC source is shipped with the GPIB address which is set at 30 The address can be only changed from the CONF functional list menu please refer to 3 6 4 This menu is also used to select the RS 232C interface and specify the parameters of RS 232C such as baud rate and parity 8 1 2 Wire Connection of RS 232C The AC source is shipped with the baud rate which is set at 9600 and with parity which is se...

Page 84: ...true if there is an enabled service request condition SR1 Remote Local The AC source powers up in local state In local state the front panel is operative and the AC source responds to the commands from GPIB In remote state all front panel keys except the PAGE EXIT key are disabled Press PAGE EXIT key to return the AC source to local state RL1 Remote State The panel shows remote message on the LCD ...

Page 85: ...s that parameter A must be entered while parameter B may be omitted or entered once or more times 8 3 2 Numerical Data Formats All data programmed to or returned from the AC source are ASCII The data can be numerical or character string Numerical Data Formats Symbol Description Example NR1 It is a digit with no decimal point The decimal is assumed to be at the right of the least significant digit ...

Page 86: ...ed common commands and queries The commands with a leading are common commands Instrument Controlled Headers Instrument controlled headers are used for all other instrument commands Each of them has a long form and a short form The AC source only accepts the exact short and long forms A special notation will be taken to differentiate the short form header from the long one of the same header in th...

Page 87: ...s the header path to the root level Example OUTPut PROTection CLEar All colons are header separators OUTPut PROTection CLEar Only the first colon is a specific root OUTPut PROTection CLEar VOLT AC 100 Only the third colon is a specific root 8 5 Execution Order The AC source executes program messages by the order received Program message units except coupled commands are executed in order of recept...

Page 88: ...e merely applied to specific models these models will be listed in the Model only entry If there is no Model only entry the command will be applied to all models 8 6 1 Common Command Dictionary Common commands begin with a and consist of three letters and or one query Common commands and queries are listed alphabetically CLS Clear status This command clears the following registers 1 Questionable S...

Page 89: ...end the next command SRE This command sets conditions of the Service Request Enabled Register If one or more of the enabled events of the Status Byte Register is set the MSS and RQS of Status Byte Register are set too SRE This query returns the Service Request Enabled Register STB This query returns the Status Byte Register Bit configuration of Status Byte Register Bit Position 7 6 5 4 3 2 1 0 Con...

Page 90: ...nt buffer FETCh SCALar CURRent AC MEASure SCALar CURRent AC Description These queries return the rms current which is being output at the output terminal Query Syntax FETCh CURRent AC MEASure CURRent AC Return Parameters NR2 FETCh SCALar CURRent DC MEASure SCALar CURRent DC Description These queries return the DC current which is being output at the output terminal Query Syntax FETCh CURRent DC ME...

Page 91: ... queries return the apparent power which is being output at output terminals in volt amperes Query Syntax FETCh POWer AC APParent MEASure POWer AC APParent Return Parameters NR2 FETCh SCALar POWer AC REACtive MEASure SCALar POWer AC REACtive Descrition These queries return the reactive power which is being output at output terminals in volt amperes Reactive power is computed as VAR APPARENTPOWER R...

Page 92: ...TATe RESistor INDuction MODE PROTection CLEar OUTPut STATe Description This command enables or disables the output of the AC source Disable output is to set an output voltage amplitude at 0 Volt Query Syntax OUTPut STATe Parameters OFF ON Return Parameters OFF ON OUTPut RELay Description This command sets output relay on or off Query Syntax OUTPut RELay Parameters OFF ON ON sets the output relay o...

Page 93: ...ters ON OFF Return Parameters ON OFF OUTPut IMPedance RESistor Description This command sets the resistance of the output impedance Query Syntax OUTPut IMPedance RESistor Parameters NR2 valid range 0 00Ω 1 00Ω Return Parameters NR2 OUTPut IMPedance INDuction Description This command sets the induction of the output impedance Query Syntax OUTPut IMPedance INDuction Parameters NR2 valid range 0 0mH ...

Page 94: ...rrent limit of the AC source for software protection Query Syntax SOURce CURRent LIMit Parameters NR2 valid range 0 00 maximum current spec of the specific model unit A Return Parameters NR2 SOURce CURRent DELay Description This command sets the delay time for triggering over current protection Query Syntax SOURce CURRent DELay Parameters NR2 valid range 0 0 5 0 unit 0 5 second Return Parameters N...

Page 95: ...ntax SOURce FUNCtion SHAPe Parameters A B Return Parameters A B SOURce FUNCtion SHAPe A Description This command specifies the waveform shape of waveform buffer A Query Syntax SOURce FUNCtion SHAPe A Parameters SINE SQUA CSIN DST 01 30 USR 01 06 Return Parameters SINE SQUA CSIN DST 01 30 USR 01 06 SOURce FUNCtion SHAPe A MODE Description This command selects the mode of the value for the clipped s...

Page 96: ... Description This command sets the percentage of peak at which the clipped sine clips in waveform buffer B Query Syntax SOURce FUNCtion SHAPe B AMP Parameters NR2 valid range 0 0 100 Return Parameters NR2 SOURce VOLTage LEVel IMMediate AMPLitude AC Description This command sets the AC composition of output voltage in Volts Query Syntax SOURce VOLTage LEVel IMMediate AMPLitude AC Parameters NR2 val...

Page 97: ...ANGe Parameters LOW HIGH AUTO Return Parameters LOW HIGH AUTO 8 6 2 4 CONFIGURE Sub system SOURce CONFigure INHibit EXTernal COUPling SOURce CONFigure INHibit Description This command sets REMOTE INHIBIT state There are three states for the feature of remote inhibit OFF LIVE and TRIG Query Syntax SOURce CONFigure INHibit Parameters OFF LIVE TRIG Return Parameters OFF LIVE TRIG SOURce CONFigure EXT...

Page 98: ...CE Sub system TRACe RMS TRACe Description This command sets waveform data of user defined It needs 1024 data points to construct a period of waveform Users have to normalize the data as the maximum point equal to 32767 or the minimum point equal to 32767 Syntax TRACe waveform_name amplitude amplitude Parameters waveform_name US n n 1 6 amplitude NR1 valid range 32767 32767 Example TRACe US1 100 20...

Page 99: ...ce LIST COUNt Description This command sets the number of times that the list is executed before it is completed Query Syntax SOURce LIST COUNt Parameters NR1 valid range 0 65535 Return Parameters NR1 SOURce LIST DWELl Description This command sets the sequence of dwell time list points Query Syntax SOURce LIST DWELl Parameters NR2 NR2 valid range 0 99999999 9 unit ms Return Parameters NR2 NR2 SOU...

Page 100: ... Syntax SOURce LIST VOLTage DC STARt Parameters NR2 NR2 valid range 212 1 212 1 in low range 424 2 414 2 in high range Return Parameters NR1 SOURce LIST VOLTage DC END Description This command sets the sequence of DC end voltage list points Query Syntax SOURce LIST VOLTage DC STARt Parameters NR2 NR2 valid range 212 2 212 1 in low range 424 2 414 2 in high range Return Parameters NR2 NR2 SOURce LI...

Page 101: ...ON Query Syntax TRIG STATE Parameters OFF ON Return Parameters OFF RUNNING 8 6 2 8 PULSE Sub system SOURce PULSe VOLTage AC DC FREQuency SHAPe SPHase COUNt DCYCle PERiod OUTPut MODE TRIG TRIG STATE SOURce PULSe VOLTage AC Description This command sets AC voltage in the duty cycle of PULSE mode Query Syntax SOURce PULSE VOLTage AC Parameters NR2 valid range 0 0 150 0 in low range 0 0 300 0 in high ...

Page 102: ...y Syntax SOURce PULSE COUNt Parameters NR2 valid range 0 65535 Return Parameters NR2 SOURce PULSe DCYCle Description This command sets the duty cycle of PULSE mode Query Syntax SOURce PULSE DCYCle Parameters NR2 valid range 0 100 Return Parameters NR2 SOURce PULSe PERiod Description This command sets the period of the PULSE mode Query Syntax SOURce PULSE PERiod Parameters NR2 valid range 0 9999999...

Page 103: ...EP mode Query Syntax SOURce STEP VOLTage DC Parameters NR2 valid range 212 1 212 1 in low range 424 2 414 2 in high range Return Parameters NR2 SOURce STEP FREQuency Description This command sets the initial frequency of STEP mode Query Syntax SOURce STEP FREQuency Parameters NR2 valid range 15 00 1000 00 unit Hz Return Parameters NR2 SOURce STEP SHAPe Description This command selects the waveform...

Page 104: ...NR2 SOURce STEP DWELl Description This command sets the dwell time in each step Query Syntax SOURce STEP DWELl Parameters NR2 valid range 0 99999999 9 unit ms Return Parameters NR2 SOURce STEP COUNt Description This command sets the number of times that the step is executed before it is completed Query Syntax SOURce STEP COUNt Parameters NR2 valid range 0 65535 Return Parameters NR2 OUTPut MODE De...

Page 105: ...ysis to display in LCD SINGLE the display will remain the measurement data when execute CONTINUE the display will refresh to new measurement data Query Syntax SOURce CONFigure HARMonic TIMes Parameters SINGLE CONTINUE Return Parameters SINGLE CONTINUE SOURce CONFigure HARMonic PARameter Description This command sets the data form of each harmonic order Query Syntax SOURce CONFigure HARMonic PARame...

Page 106: ...r output voltage Query Syntax FETCh HARMonic FUNDamental MEASure HARMonic FUNDamental Return Parameters NR2 FETCh SCALar HARMonic ARRay MEASure SCALar HARMonic ARRay Description These queries return the amplitude of all the harmonic order Query Syntax FETCh HARMonic ARRay MEASure HARMonic ARRay Return Parameters NR2 8 6 2 11 SYNTHESIS Sub system SOURce SYNThesis COMPose AMPLitude PHASe FUNDamental...

Page 107: ...Rce SYNThesis FUNDamental Parameters NR2 valid range 0 0 150 0 in low range 0 0 300 0 in high range Return Parameters NR2 SOURce SYNThesis DC Description This command sets the DC voltage which adds to voltage waveform of SYNTHESIS mode Query Syntax SOURce SYNThesis DC Parameters NR2 valid range 212 1 212 1 in low range 424 2 424 2 in high range Return Parameters NR2 SOURce SYNThesis FREQuency Desc...

Page 108: ...onics FREQuency STARt END LEVEl DWELl OUTPut MODE TRIG TRIG STATE FETCh MEASure INTerharmonics FREQuency Query the sweeping frequency SOURce INTerharmonics FREQuency STARt Description This command starts frequency of the sweep wave of INTERHARMONICS mode Query Syntax SOURce INTerharmonics FREQuency STARt Parameters NR2 valid range 0 01 2400 00 unit Hz Return Parameters NR2 SOURce INTerharmonics FR...

Page 109: ... command sets INTERHARMONICS mode in OFF ON PAUSE or CONTINUE execution state after setting OUTPut MODE INTERHAR If users want to change the parameters it s necessary to set TRIG OFF then OUTPut MODE FIXED Then set OUTPut MODE INTERHAR again to get ready to set TRIG ON Query Syntax TRIG STATE Parameters OFF ON PAUSE CONTINUE Return Parameters OFF RUNNING COMPLETE FETCh SCALar INTerharmonics FREQue...

Page 110: ...tion Description This query returns the value of the Questionable Condition register which is a read only register that holds the real time questionable status of the AC source Query Syntax STATus QUEStionable CONDition Parameters NONE Return Parameters NR1 valid range 0 511 STATus QUEStionable EVENt Description This query returns the value of the Questionable Event register The Event register is ...

Page 111: ...PTR registers are set at 0 no transition of that bit in the Questionable Condition register can set the corresponding bit in the Questionable Event register Bit Configuration of Questionable Status Register Bit Position 15 9 8 7 6 5 4 3 2 1 0 Condition OVP INP OCP FAN SHT OTP OPP INT DD INT AD OVP Output voltage protection INP Line input protection OCP Over current protection FAN Fan failure SHT O...

Page 112: ...on This command can only be used under the control of RS 232C If SYST LOC is programmed the AC source will be set in the LOCAL state and the front panel will work Query Syntax NONE Parameters NONE Return Parameters NONE SYSTem REMote Description This command can only be used under the control of RS 232C If SYST REM is programmed the AC source will be set in the REMOTE state and the front panel wil...

Page 113: ...trument Commands FETCh MEASure SCALar CURRent AC DC AMPLitude MAXimum CREStfactor INRush FREQuency HARMonic THD FUNDamental ARRay INTerharmoics FREQuency POWer AC REAL APParent REACtive PFACtor VOLTage ACDC DC OUTPut STATe RELay SLEW VOLTage AC DC FREQuency COUPling IMPedance STATe RESistor INDuction MODE PROTection CLEar SOURce CURRent LIMit DELay INRush STARt ...

Page 114: ...MMediate VOLTage LEVel IMMediate AMPLitude AC DC LIMit AC DC PLUS MINus RANGe FUNCtion SHAPe SHAPe A A MODE THD AMP B B MODE THD AMP LIST POINts COUNt DWELl SHAPe BASE VOLTage AC STARt END DC STARt END FREQuency STARt END DEGRee PULSe VOLTage AC DC FREQuency SHAPe SPHase COUNt DCYCle PERiod ...

Page 115: ...ncy DWELl COUNt SYNThesis COMPose AMPLitude PHASe FUNDamental DC FREQuency SPHase INTerharmonics FREQuency STARt END LEVEl DWELl SOURce PHASe ON OFF SOURce CONFigure INHibit EXTernal COUPling HARMonic SOURce TIMes PARameter FREQuency SENSe HARMonic TRACe RMS STATus OPERation EVENt ENABle ...

Page 116: ...Programmable AC Source 61501 61502 61503 61504 User s Manual 8 34 QUEStionable EVENt CONDition ENABle NTRansition PTRansition SYSTem ERRor VERSion LOCal REMote TRIG TRIG STATE ...

Page 117: ...n inhibit the output of AC source or excite the action of mode See 3 6 1 AC ON When AC source output voltage this pin will becomes HIGH and it becomes LOW when quit output FAULT OUT The voltage level of this pin is HIGH if AC source is in normal state It becomes LOW when AC source is in protection state Connecting the FAULT OUT signal of TTL PIN8 on AC Source rear panel to TTL PIN8 on A615003 rear...

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Page 119: ...Appendix B Built in Waveforms B 1 Appendix B Built in Waveforms DST01 DST02 Harmonic θ 5 9 8 0 7 15 8 0 8 2 16 0 Harmonic θ 3 1 44 0 7 1 47 0 19 1 95 0 ...

Page 120: ...rammable AC Source 61501 61502 61503 61504 User s Manual B 2 DST03 DST04 Harmonic θ 3 1 96 0 5 1 37 0 7 1 98 0 23 1 42 0 31 1 0 Harmonic θ 3 2 45 0 5 1 88 0 7 2 46 0 23 1 95 0 25 1 09 0 31 1 52 0 33 1 09 0 ...

Page 121: ...Appendix B Built in Waveforms B 3 DST05 DST06 Harmonic θ 3 2 45 0 5 1 88 0 7 2 46 0 23 1 95 0 25 1 09 0 31 1 52 0 33 1 09 0 Harmonic θ 3 1 6 0 5 4 17 0 7 3 4 0 15 1 02 0 19 2 92 0 ...

Page 122: ...le AC Source 61501 61502 61503 61504 User s Manual B 4 DST07 DST08 Harmonic θ 3 2 17 0 5 5 59 0 7 2 79 0 9 4 56 0 11 2 92 0 15 1 35 0 21 0 99 0 Harmonic θ 3 4 86 0 5 1 58 0 7 2 64 0 11 1 37 0 15 1 95 0 17 1 06 0 ...

Page 123: ...10 Harmonic θ 3 7 27 0 5 2 39 0 7 4 01 0 11 2 07 0 13 1 03 0 15 2 94 0 17 1 59 0 19 1 0 21 1 04 0 23 1 19 0 25 1 03 0 Harmonic θ 3 9 78 0 5 3 19 0 7 5 37 0 9 1 17 0 11 2 76 0 13 1 37 0 15 3 92 0 17 2 13 0 19 1 34 0 21 1 39 0 23 1 59 0 25 1 36 0 ...

Page 124: ...Programmable AC Source 61501 61502 61503 61504 User s Manual B 6 DST11 DST12 Harmonic θ 3 17 72 0 Harmonic θ 3 21 21 0 ...

Page 125: ...Appendix B Built in Waveforms B 7 DST13 DST14 Harmonic θ 3 24 48 0 Harmonic θ 2 2 19 0 5 9 83 0 7 15 76 0 8 2 34 0 ...

Page 126: ...Programmable AC Source 61501 61502 61503 61504 User s Manual B 8 DST15 DST16 Harmonic θ 2 1 04 0 5 4 9 0 7 7 86 0 8 1 14 0 Harmonic θ 5 2 42 0 7 73 91 0 ...

Page 127: ...Appendix B Built in Waveforms B 9 DST17 DST18 Harmonic θ 3 11 08 180 5 4 05 0 7 2 03 180 9 1 27 0 Harmonic θ 3 7 16 0 5 3 46 180 ...

Page 128: ...Programmable AC Source 61501 61502 61503 61504 User s Manual B 10 DST19 DST20 Harmonic θ 3 8 07 0 5 3 55 180 9 0 96 0 13 0 92 180 Harmonic θ 3 9 38 0 5 3 44 180 9 1 12 0 13 0 5 180 ...

Page 129: ... DST21 DST22 Harmonic θ 3 2 06 180 5 1 77 0 7 1 62 180 9 1 23 0 11 0 91 180 13 0 54 0 23 0 51 0 25 0 53 180 Harmonic θ 3 3 08 180 5 2 72 0 7 2 43 180 9 1 97 0 11 1 41 180 13 0 86 0 21 0 62 180 23 0 73 0 25 0 77 180 27 0 69 0 29 0 56 180 ...

Page 130: ...2 0 13 180 3 4 28 180 5 3 77 0 7 3 27 180 9 2 57 0 11 1 93 180 13 1 22 0 15 0 55 180 19 0 46 0 21 0 83 180 23 0 97 0 25 1 04 180 29 0 75 180 Harmonic θ 3 5 74 180 5 5 11 0 7 4 44 180 9 3 52 0 11 2 63 180 13 1 65 0 15 0 8 180 19 0 61 0 21 1 07 180 23 1 28 0 25 1 35 180 27 1 22 0 29 0 98 180 ...

Page 131: ... θ 3 7 35 180 5 6 6 0 7 5 74 180 9 4 57 0 11 3 41 180 13 2 16 0 15 1 04 180 19 0 74 0 21 1 35 180 23 1 64 0 25 1 73 180 27 1 56 0 29 1 24 180 Harmonic θ 5 3 41 0 7 2 55 0 11 9 22 0 13 7 68 0 17 0 9 0 19 0 9 0 23 3 88 0 25 3 56 0 31 0 5 0 35 2 34 0 37 2 21 0 ...

Page 132: ...ual B 14 DST27 DST28 Harmonic θ 21 1 24 0 23 4 91 0 25 2 21 0 Harmonic θ 3 33 39 0 5 20 01 0 7 13 76 0 9 10 7 0 11 8 39 0 13 7 06 0 15 5 85 0 17 4 86 0 19 4 86 0 21 4 52 0 23 4 0 25 3 49 0 27 2 91 0 29 2 45 0 31 1 94 0 33 1 95 0 35 1 91 0 37 1 89 0 39 1 83 0 ...

Page 133: ...39 0 5 20 01 0 7 13 75 0 9 10 71 0 11 8 37 0 13 7 05 0 15 5 84 0 17 4 84 0 19 4 83 0 21 4 48 0 23 3 93 0 25 0 89 0 27 0 92 0 29 0 94 0 31 0 94 0 33 0 94 0 35 0 93 0 37 0 92 0 39 0 91 0 Harmonic θ 3 33 39 0 5 20 01 0 7 13 74 0 9 10 67 0 11 8 33 0 13 6 99 0 15 5 26 0 ...

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