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Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual

Section 3: Adjustment

DMM6500-905-01 Rev. A/July 2018

3-37

cal.adjust.step.setup("cal_ACI_200mA_1kHz_fs")

cal.adjust.step.execute("cal_ACI_200mA_1kHz_fs")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_200mA_10kHz_fs")

cal.adjust.step.execute("cal_ACI_200mA_10kHz_fs")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_1A_1kHz_tenth")

cal.adjust.step.execute("cal_ACI_1A_1kHz_tenth")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_1A_10Hz_fs")
cal.adjust.step.execute("cal_ACI_1A_10Hz_fs")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_1A_1kHz_fs")
cal.adjust.step.execute("cal_ACI_1A_1kHz_fs")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_3A_1kHz_tenth")

cal.adjust.step.execute("cal_ACI_3A_1kHz_tenth")
--Use AC current setup
cal.adjust.step.setup("cal_ACI_3A_1kHz_fs")
cal.adjust.step.execute("cal_ACI_3A_1kHz_fs")
--Use AC current 10 A setup
cal.adjust.step.setup("cal_ACI_10A_400Hz_tenth")
cal.adjust.step.execute("cal_ACI_10A_400Hz_tenth")

--Use AC current 10 A setup
cal.adjust.step.setup("cal_ACI_10A_400Hz_fs")

cal.adjust.step.execute("cal_ACI_10A_400Hz_fs")

--Use AC current 10 A setup
cal.adjust.step.setup("cal_ACI_10A_5kHz_fs")

cal.adjust.step.execute("cal_ACI_10A_5kHz_fs")

--Use AC current 10 A setup
cal.adjust.step.setup("cal_ACI_10A_400Hz_2A")

cal.adjust.step.execute("cal_ACI_10A_400Hz_2A")

--Use AC current 10 A setup
cal.adjust.step.setup("cal_ACI_10A_10Hz_2A")

cal.adjust.step.execute("cal_ACI_10A_10Hz_2A")
--Use frequency setup
cal.adjust.step.setup("cal_FREQ_1kHz")
cal.adjust.step.execute("cal_FREQ_1kHz")

Enable temperature correction

After your adjustments are complete, turn on temperature correction. Run the following command to
turn on temperature correction.

cal.adjust.step.setup("TC_EN")
cal.adjust.step.execute("TC_EN", 1)

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Содержание DMM6500

Страница 1: ...Calibration and Adjustment Manual DMM6500 905 01 Rev A July 2018 DMM6500 905 01A DMM6500 905 01A tek com keithley Model DMM6500 6 Digit Multimeter With Scanning...

Страница 2: ...eithley Instruments product names are trademarks or registered trademarks of Keithley Instruments LLC Other brand names are trademarks or registered trademarks of their respective holders The Lua 5 0...

Страница 3: ...d to mains These instruments will be marked as category II or higher Unless explicitly allowed in the specifications operating manual and instrument labels do not connect any instrument to mains Exerc...

Страница 4: ...lains hazards that could damage the instrument Such damage may invalidate the warranty The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or m...

Страница 5: ...6 AC voltage verification 2 8 Digitize voltage verification 2 12 Frequency verification 2 14 Simulated thermocouple Type J temperature verification 2 15 Simulated RTD temperature verification 2 17 Re...

Страница 6: ...3 10 Rear terminal adjustment with open circuit inputs 3 11 Resistance adjustment 3 12 DC voltage adjustment 3 14 DC current adjustment 3 16 DC current 10 A range adjustment 3 18 AC voltage adjustmen...

Страница 7: ...calibration constants so that the accuracy of the instrument is within its one year accuracy specifications This manual presents calibration information adjustment information and command description...

Страница 8: ...review the information in this documentation please contact your local Keithley Instruments office sales partner or distributor You can also call the corporate headquarters of Keithley Instruments to...

Страница 9: ...tory specifications Determine if adjustment is required Verify that adjustment was done properly The information in this section is intended for qualified service personnel only Do not attempt these p...

Страница 10: ...unless otherwise noted No direct airflow on the input terminals Warmup period Allow the DMM6500 to warm up for at least 30 minutes before conducting the calibration verification procedures If the inst...

Страница 11: ...ey Instruments 3390 Function Arbitrary Waveform Generator Frequency See following note IET Labs Inc 1423 A Precision Decade Capacitor Capacitance 1 nF to 1 F See following note IET Labs Inc HACS Z A 2...

Страница 12: ...esistance values supplied by the equipment manufacturer Calculations are performed in the same manner as shown in the preceding example Use the actual calibration resistance values instead of the nomi...

Страница 13: ...ions When performing the calibration verification procedures Be sure to restore factory front panel defaults From the front panel select the MENU key select Info Manage and select System Reset Make su...

Страница 14: ...a shock hazard Verify DC voltage accuracy for the 100 mV to 1000 V ranges To verify 100 mV to 1000 VDC voltage accuracies you will Apply accurate DC voltages from the calibrator to the DMM6500 front...

Страница 15: ...Source positive and negative full scale and half scale voltages and allow for proper settling 14 Select each range on the DMM6500 allow for proper settling and verify the ranges according to the follo...

Страница 16: ...1 000000E 02 1 0000460E 02 9 999540E 01 Verify the DC voltage 1000 V range Description Verification point Lower limit Upper limit Full scale 1 000000E 03 9 99931E 02 1 000069E 03 Half scale 5 00000 02...

Страница 17: ...CTION key and select AC voltage 3 On the Home screen select the button next to Range and select 100 mV 4 Press the MENU key 5 Under Measure select Settings 6 Make sure that detector bandwidth is set t...

Страница 18: ...10 1 0E 03 9 991000E 00 1 000900E 01 10 5 0E 04 9 983000E 00 1 001700E 01 10 1 0E 05 9 932000E 00 1 006800E 01 Verify the AC voltage 100 V range Input Frequency Lower limit Upper limit 100 3 0E 01 9...

Страница 19: ...curately for input signals from 3 Hz to 300 kHz with reading rates 0 5 readings s To improve verification throughput to 3 3 readings s set detector bandwidth to 30 Hz for frequencies of 30 Hz to 300 k...

Страница 20: ...page 2 4 The maximum input voltage between INPUT HI and INPUT LO is 1000 V DC and 750 V AC Exceeding this value may create a shock hazard The maximum common mode voltage the voltage between INPUT LO...

Страница 21: ...es below For each voltage setting verify that the STATISTICS swipe screen reading for Average is within low and high limits The Fluke 5720A or 5730A calibrator 1000 V range 0 0 V setting is not verifi...

Страница 22: ...cale 500 4 9975E 02 5 0025E 02 Half scale 500 5 0025E 02 4 9975E 02 Full scale 1000 1 00040E 03 9 996E 02 Frequency verification To verify frequency accuracy you will Apply accurate frequencies from t...

Страница 23: ...999730E 05 3 000270E 05 Simulated thermocouple Type J temperature verification To verify thermocouple accuracy you will Apply accurate voltages from the calibrator to the terminals on the front panel...

Страница 24: ...NPLC 10 Next to NPLC select 1 PLC 11 Select OK and press the HOME key to return to the Home Screen 12 Set the calibrator to output 0 V and enable the output 13 Allow five minutes for settling of the...

Страница 25: ...verification Use the following information to verify the performance of the DMM6500 Actual calibrator source values will vary RTD verification is based on the calibrator sourcing resistance and the D...

Страница 26: ...an Dusen equations are listed in the following table DMM6500 resistance to temperature device RTD Type Standard Alpha Beta Delta R0 at 0 C PT100 ITS 90 0 00385055 0 10863 1 49990 100 0000 D100 0 00392...

Страница 27: ...uracy verification 2 For 3 wire accuracy connect the DMM6500 INPUT and SENSE terminals to the calibrator as shown in the following figure The SENSE HI wire is not required for 3 wire RTD measurements...

Страница 28: ...SNS keys 12 Record DMM6500 accuracies 13 Refer to the table for PT100 accuracies Fluke 5720 and 5730 resistance source values vary and may require new resistance to temperature target accuracy values...

Страница 29: ...ctual calibrator source values Verify that the displayed readings are within specified limits Verify 4 wire resistance accuracy To verify 4 wire resistance accuracy 1 Connect the DMM6500 INPUT and SEN...

Страница 30: ...compensation enable dmm OCOMP_ON dmm measure range 1e6 The following warning message is displayed 1131 Parameter measure range expected value from 1 to 100000 Set dmm measure offsetcompensation enable...

Страница 31: ...ctual calibrator value Lower limit Upper limit 1 0E 05 1 00E 05 1 0000060E 05 9 99921E 04 1 000091E 05 1 0E 06 0 00E 00 n a 6 00E 00 6 00E 00 1 00E 06 9 99851E 05 1 000063E 06 1 000063E 06 1 0E 07 0 0...

Страница 32: ...ainty required This manual describes the verification procedure using a Fluke 8508A reference digital multimeter DMM in series with the DMM6500 to determine the nominal test current value for the 10 A...

Страница 33: ...propriate range to be verified Use the Model 8508A 200 A range to verify the DMM6500 10 A and 100 A ranges Use the Model 8508A 2 mA 20 mA and 200 mA ranges to verify the DMM6500 1 mA 10 mA and 100 mA...

Страница 34: ...nce 5 00012 mA 60 ppm 10 mA 9 ppm 0 000390072 mA Lower test limit 5 00012 0 000390072 4 999729928 mA Upper test limit 5 00012 0 000390072 5 000510072 mA Although the specification tolerance calculated...

Страница 35: ...100 mA to 3 A range verification Zero verify the DMM6500 1 On the calibrator select the OPR STBY key Make sure that the front panel displays STANDBY 2 Set the ranges to 100 mA 3 Verify the DMM6500 zer...

Страница 36: ...scale 1 5 1 498980E 00 1 501020E 00 Half scale 1 5 1 501020E 00 1 498980E 00 scale 2 2 001320E 00 1 998680E 00 The 3 A range full scale test points are limited to 2 A in this table because of the acc...

Страница 37: ...cale currents as listed in the following tables 13 Repeat these steps for the 100 A to 3 A range settings listed in the following tables Verify digitize current 100 A range Description Calibrator setp...

Страница 38: ...ze current 3 A range Description Calibrator setpoint A Lower limit Upper limit UUT zero 0 REL n a scale 2 1 99700E 00 2 00300E 00 Half scale 1 5 1 49745E 00 1 50255E 00 Half scale 1 5 1 50255E 00 1 49...

Страница 39: ...ngs 6 Make sure that Detector Bandwidth is set to 30 Hz AC current is specified for the detector bandwidth setting of 3 Hz 3 Hz measures accurately for input signals from 3 Hz to 10 kHz with reading r...

Страница 40: ...400E 02 10 mA at 1 kHz 0 010 9 986000E 03 1 001400E 02 10 mA at 5 kHz 0 010 9 986000E 03 1 001400E 02 Verify AC current 100 mA range Description Verification point Lower limit Upper limit 100 mA at 40...

Страница 41: ...F thru 100 F decade box 1 Connect the DMM6500 shielded banana cable banana to dual BNC cable and 1 F through 100 F decade capacitor box as shown in the following diagram Figure 16 Connect DMM6500 to...

Страница 42: ...be as high as 300 pF which could prevent full scale verification due to the large cable capacitance offset Cable lengths should be minimized to reduce cable capacitance as much as possible 9 Connect...

Страница 43: ...0E 06 100 10 F range 1 0000E 05 9 9500E 06 1 0050E 05 10 100 F range 1 0000E 05 9 8600E 06 1 0140E 05 100 100 F range 1 0000E 04 9 9500E 05 1 0050E 04 Verifying zero values using a 4 wire short Four w...

Страница 44: ...2 00E 03 1 k 6 00E 03 6 00E 03 10 k 6 00E 02 6 00E 02 100 k 1 00E 00 1 00E 00 Verify DC voltage zero values using the 4 wire short To verify DC voltage zero values 1 Leave the short connected as desc...

Страница 45: ...e verification procedures that are done with connections attached to the terminals on the DMM6500 rear panel DC current 10 A range verification To verify 10 A range 1 Set the TERMINALS switch to REAR...

Страница 46: ...displays STANDBY 2 Verify the DMM6500 zero reading 3 Verify the DC current verification points and reference DMM readings from the following table Verify DC current 10 A range Description Nominal inpu...

Страница 47: ...ld be made of heavy gauge wire and should be as short as practical To verify the 10 A range 1 Connect DMM6500 calibrator and amplifier as shown in the following figure Figure 20 Connections for the 10...

Страница 48: ...mit UUT Zero STANDBY 8 00E 03 REL 8 00E 03 REL Full scale 10 9 99670E 00 1 00330E 01 Half scale 5 4 97950E 00 5 02050E 00 Half scale 5 5 02050E 00 4 97950E 00 Full scale 10 1 00330E 01 9 99670E 00 AC...

Страница 49: ...onnections for the 10 A range 9 Enable the calibrator amplifier and select the BOOST key 10 On the calibrator set the amplifier range lock to ON 11 Source AC current for each of the frequencies listed...

Страница 50: ...pecified for a period of 90 days 1 year or 2 years from adjustment Adjustment should be performed at one of these intervals depending on your specification requirements Performance is specified relati...

Страница 51: ...Warmup period Allow the DMM6500 to warm up for at least 30 minutes before conducting the adjustment procedures If the instrument has been subjected to temperature extremes more than 5 C above or belo...

Страница 52: ...ertainty which varies for each function and range test point General adjustment considerations DMM6500 DCV performance is sensitive to errors from thermoelectric potentials generated by test cables an...

Страница 53: ...intended for qualified service personnel only Do not attempt these procedures unless you are qualified to do so Some of these procedures may expose you to hazardous voltages which could cause personal...

Страница 54: ...e of the remote interfaces The adjustment procedure may be done interactively programmatically or using a combination of the two Interactive Manually set up and connect each reference signal then send...

Страница 55: ...he parameters you need For a complete adjustment run through these sections in order making the preparations and running all of the command parameters You will send each command parameter twice The fi...

Страница 56: ...accuracy will be affected if the shorting plug terminals are not aligned correctly Figure 22 Connection for a front panel adjustment with a 4 wire short 3 Allow to settle for five minutes Command par...

Страница 57: ..._front cal_4W_10ohm_zero_front cal_2W_100ohm_zero_front cal_4W_100ohm_zero_front cal_2W_1kohm_zero_front cal_3W_1kohm_zero_front cal_3W_1kohm_Hi_zero_front cal_3W_1kohm_SLO_zero_front cal_4W_1kohm_zer...

Страница 58: ...terminals of the DMM6500 as shown in the figure below The shorting plug terminals must be connected so that HI and LO are correctly aligned Zero accuracy will be affected if the shorting plug termina...

Страница 59: ...hm_zero_rear cal_2W_100kohm_zero_rear cal_3W_100kohm_SLO_zero_rear cal_4W_100kohm_zero_rear cal_2W_1Mohm_zero_rear cal_4W_1Mohm_zero_rear cal_2W_HiOhm_zero_rear cal_4W_HiOhm_zero_rear cal_diode_10mA_z...

Страница 60: ...zero_front Command parameters cal_DCI_3A_zero_front cal_DCI_1A_zero_front cal_DCI_100mA_zero_front cal_DCI_10mA_zero_front cal_DCI_1mA_zero_front cal_DCI_100uA_zero_front cal_DCI_10uA_zero_front cal_D...

Страница 61: ...command cal adjust step setup cal_DCI_10A_zero_rear cal adjust step execute cal_DCI_10A_zero_rear Command parameters cal_DCI_10A_zero_rear cal_DCI_DIGI_10A_zero_rear cal_DCI_3A_zero_rear cal_DCI_1A_z...

Страница 62: ...First send the parameter using the setup command Second send the parameter using the execute command along with the calibrator stimulus value The example code below uses the first line of code from t...

Страница 63: ...10000 10000 actual from calibrator cal_source_100uA_1V 4 wire 100000 100000 actual from calibrator cal_4W_100kohm_fs 4 wire 100000 100000 actual from calibrator cal_source_10uA_1V 4 wire 100000 10000...

Страница 64: ...nd all command parameters using this command cal adjust step setup cal_DCV_DIGI_1kV_fs_pos cal adjust step execute cal_DCV_DIGI_1kV_fs_pos Command parameters Calibrator function Calibrator range Calib...

Страница 65: ...front terminal adjustment for DC current accuracy The following section provides a command parameter table to complete the adjustment For this adjustment you need a Fluke 5720 calibrator Fluke 8508A R...

Страница 66: ...end the cal_TS6 first Command parameters Calibrator function Calibrator range Calibrator value Calibrator stimulus value Reference DMM DC current range cal_TS6 n a n a n a n a 10 A range full scale no...

Страница 67: ...eading 10 mA cal_DCI_DIGI_10mA_fs_neg DC current 0 022 0 01 8508A Reading 10 mA Characterized step measured by the Fluke 8508A Command parameters Calibrator function Calibrator range Calibrator value...

Страница 68: ...ng 10 A cables Figure 27 Connection for a 10 A range adjustment Command parameters for a DC current 10 A range adjustment When calibrating your DMM6500 for a DC current 10 A range adjustment use the f...

Страница 69: ...wing section provides a command parameter table to complete the adjustment For this adjustment you need a Fluke 5720 calibrator Keithley Model 3390 function generator Prepare your DMM6500 for an AC vo...

Страница 70: ...Hz_fs AC voltage 0 22 0 1 200 kHz cal_ACV_100mV_300kHz_fs AC voltage 0 22 0 1 300 kHz cal_ACV_1V_1kHz_1pct AC voltage 0 022 0 01 1 kHz cal_ACV_1V_10Hz_fs AC voltage 2 2 1 10 Hz cal_ACV_1V_1kHz_fs AC v...

Страница 71: ...ter table to complete the adjustment For this adjustment you need a Fluke 5720 calibrator Prepare your DMM6500 for an AC current adjustment To prepare the DMM6500 for an AC current adjustment Connect...

Страница 72: ...1 kHz cal_ACI_100mA_10Hz_fs AC current 0 22 0 1 10 Hz cal_ACI_200mA_1kHz_fs AC current 0 22 0 2 1 kHz cal_ACI_200mA_10kHz_fs AC current 0 22 0 2 10 kHz cal_ACI_1A_1kHz_tenth AC current 0 22 0 1 1 kHz...

Страница 73: ...ses the first line of code from the table below Send all command parameters using this command cal adjust step setup cal_ACI_10A_400Hz_tenth cal adjust step execute cal_ACI_10A_400Hz_tenth Command par...

Страница 74: ...or a frequency adjustment 3 Set the function generator output impedance to high amplitude of 5 VRMS waveform to square wave 4 Enable output Command parameters for a frequency adjustment When calibrati...

Страница 75: ...just step setup cal_DCV_10V_zero_front cal adjust step execute cal_DCV_10V_zero_front Use front terminal 4 wire short setup cal adjust step setup cal_sense_10V_zero_front cal adjust step execute cal_s...

Страница 76: ...m_zero_front Use front terminal 4 wire short setup cal adjust step setup cal_3W_10kohm_SLO_zero_front cal adjust step execute cal_3W_10kohm_SLO_zero_front Use front terminal 4 wire short setup cal adj...

Страница 77: ...e cal_DCV_1V_zero_rear Use rear terminal 4 wire short setup cal adjust step setup cal_DCV_10V_zero_rear cal adjust step execute cal_DCV_10V_zero_rear Use rear terminal 4 wire short setup cal adjust st...

Страница 78: ..._3W_100kohm_SLO_zero_rear Use rear terminal 4 wire short setup cal adjust step setup cal_4W_100kohm_zero_rear cal adjust step execute cal_4W_100kohm_zero_rear Use rear terminal 4 wire short setup cal...

Страница 79: ...step execute cal_DCI_DIGI_100mA_zero Use front terminal 4 wire open circuit setup cal adjust step setup cal_DCI_DIGI_10mA_zero cal adjust step execute cal_DCI_DIGI_10mA_zero Use front terminal 4 wire...

Страница 80: ...tor Use resistance setup cal adjust step setup cal_4W_100ohm_fs cal adjust step execute cal_4W_100ohm_fs 100ohm_value_read_from_calibrator Use resistance setup cal adjust step setup cal_4W_100ohm_OCOM...

Страница 81: ...p setup cal_DCV_DIGI_100V_fs_pos Use DC voltage setup cal adjust step setup cal_DCV_100V_fs_neg cal adjust step setup cal_DCV_100V_fs_neg Use DC voltage setup cal adjust step setup cal_DCV_DIGI_100V_f...

Страница 82: ...rrent setup cal adjust step setup cal_DCI_DIGI_1mA_fs_pos cal adjust step execute cal_DCI_DIGI_1mA_fs_pos value_read_from_ 8508A Use DC current setup cal adjust step setup cal_DCI_1mA_fs_neg cal adjus...

Страница 83: ...CI_DIGI_10A_fs_pos cal adjust step execute cal_DCI_DIGI_10A_fs_pos Use DC current 10 A setup cal adjust step setup cal_DCI_10A_fs_neg cal adjust step execute cal_DCI_10A_fs_neg Use DC current 10 A set...

Страница 84: ...p cal_ACV_10V_1kHz_fs cal adjust step execute cal_ACV_10V_1kHz_fs Use AC voltage setup cal adjust step setup cal_ACV_10V_50kHz_fs cal adjust step execute cal_ACV_10V_50kHz_fs Use AC voltage setup cal...

Страница 85: ...nt setup cal adjust step setup cal_ACI_100uA_1kHz_tenth cal adjust step execute cal_ACI_100uA_1kHz_tenth Use AC current setup cal adjust step setup cal_ACI_100uA_1kHz_fs cal adjust step execute cal_AC...

Страница 86: ...current setup cal adjust step setup cal_ACI_3A_1kHz_fs cal adjust step execute cal_ACI_3A_1kHz_fs Use AC current 10 A setup cal adjust step setup cal_ACI_10A_400Hz_tenth cal adjust step execute cal_AC...

Страница 87: ...is executed However you can also use Test Script Processor TSP commands to set the time verification date and adjustment date To set the DMM6500 time adjust date and verify date using TSP commands Unl...

Страница 88: ...pleted a step and is ready for the next command Prompts mode also returns a TSP prompt if an event message is available for example if an error occurs during an adjustment step See Handling events on...

Страница 89: ...Nonvolatile memory Not applicable Usage adjustments cal adjust count adjustments The number of adjustments Details You can use this command if calibration is locked or unlocked The adjust count is re...

Страница 90: ...nd adjustDate The date when the last adjustment occurred year Year must be more than 1970 month Month 1 to 12 day Day 1 to 31 hour Hour in 24 hour time format 0 to 23 minute Minute 0 to 59 second Seco...

Страница 91: ...saved Default value Function Yes Usage cal adjust step setup stepname cal adjust step setup stepname value stepname The adjustment step to start value The value for this adjustment step If using the...

Страница 92: ...e saved Default value Function Yes Usage cal adjust step execute stepname cal adjust step execute stepname value stepname The adjustment step to start value Value for this adjustment step If using the...

Страница 93: ...on To perform calibration you must unlock calibration This command does not save calibration data Calibration data is lost if it is you do not save it before sending cal lock Use cal save to save the...

Страница 94: ...contains the password to unlock calibration maximum of 10 characters Details This command can only be sent when calibration is unlocked The password is not saved until calibration is saved with cal sa...

Страница 95: ...also sets the adjustment date and increments the adjustment count Calibration constants are retained indefinitely once saved Calibration is temporary unless the changes are saved Calibration data is n...

Страница 96: ...alibration Details Calibration data is locked during normal operation To perform calibration you must unlock calibration The default password is KI000CAL You can use cal password to change the default...

Страница 97: ...he last verification occurred year Year must be more than 1970 month Month 1 to 12 day Day 1 to 31 hour Hour in 24 hour time format 0 to 23 minute Minute 0 to 59 second Second 0 to 59 Details The date...

Страница 98: ...July 2018 Example 1 cal verify date os time year 2018 month 9 day 5 print cal verify date Set the verify calibration date to September 5 2018 Verify the date Example output Sep 5 2014 12 00 00 000 Exa...

Страница 99: ...names are the property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Clevela...

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