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Fluke 5790B, Service Manual

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Fluke 5790B Service Manual Download Page 29

 

Theory of Operation

 

 

Functional Block Diagram Discussion

 

2

 

 

 

 

 

2-3 

BINDING

POSTS

TYPE ‘N’

CONNECTOR

ATTENUATORS

AND 

PROTECTION

MODULE

TRANSFER

SWITCH

PROTECTION INTERRUPT

AMPLIFIERS

RMS

SENSOR

A/D

DAC

CPU

M1

CHOPPER

MEASURE INPUT

28 Hz

BINDING

POSTS

TYPE ‘N’

CONNECTOR

ATTENUATORS

AND 

PROTECTION

MODULE

PROTECTION INTERRUPT

AMPLIFIERS

RMS

SENSOR

A/D

DAC

CHOPPER

CPU

M2

MEASURE
INPUT=M1

SET

DAC

MEASURE

DAC=M2

M1-M2<

IDELTAI?

NO

YES

ADJUST 

DAC

DISPLAY

MEAS

1

MEASURE DAC

2

FLOWCHART

1

2

 

elu002.eps 

Figure 2-1. Functional Block Diagram 

Summary of Contents for 5790B

Page 1: ...Specifications are subject to change without notice All product names are trademarks of their respective companies 5790B AC Measurement Standard Service Manual Via Acquanera 29 22100 Como tel 031 526...

Page 2: ...nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB D...

Page 3: ...rmance 1 13 DC Secondary Performance 1 15 Operating Characteristics 1 16 AUX Input Characteristics 1 17 Absolute Wideband Specifications 5790B 3 5790B 5 and 5790B AF 1 17 2 Theory of Operation 2 1 Int...

Page 4: ...eband AC Option 3 27 Characterizing the AC Source 3 29 Calibration Adjustment of Wideband Input Gain at 1 kHz 3 32 Calibration Adjustment of Wideband Input Flatness 3 33 Calibration Adjustment of AF O...

Page 5: ...Removal and Installation 4 7 Analog Assembly Removal and Installation 4 7 A20 CPU Assembly Removal and Installation 4 8 Power Transformer Removal and Installation 4 8 Fan Removal and Installation 4 8...

Page 6: ...5790B Service Manual iv...

Page 7: ...a procedure to ensure that the Product meets its published specifications Fluke Calibration recommends a 1 year calibration cycle for the Product Use calibration adjustments to correct out of toleran...

Page 8: ...shock fire or personal injury Read all safety information before you use the Product Carefully read all instructions Use the Product only as specified or the protection supplied by the Product can be...

Page 9: ...d connector approved for the voltage and plug configuration in your country and rated for the Product Make sure that the Product is grounded before use Disconnect the mains power cord before you remov...

Page 10: ...product is classed as category 9 Monitoring and Control Instrumentation product Do not dispose of this product as unsorted municipal waste Specifications Specifications are valid after a warm up peri...

Page 11: ...due to conducted and radiated disturbances Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object Korea KCC Class A Equipment Industrial Broa...

Page 12: ...tributed unless otherwise stated The relative specifications are provided for enhanced accuracy applications To calculate an enhanced absolute specification from the relative specification it is neces...

Page 13: ...Hz 1 210 210 1 5 210 1 5 210 1 5 20 Hz 40 Hz 82 84 1 5 85 1 5 87 1 5 40 Hz 20 kHz 34 37 1 5 38 1 5 43 1 5 20 kHz 50 kHz 67 69 2 0 69 2 0 73 2 0 50 kHz 100 kHz 160 2 5 160 2 5 160 2 5 100 kHz 300 kHz...

Page 14: ...7 50 kHz 100 kHz 96 98 110 100 kHz 300 kHz 210 210 260 300 kHz 500 kHz 440 500 700 700 V 10 Hz 20 Hz 4 200 200 200 200 20 Hz 40 Hz 92 96 99 110 40 Hz 20 kHz 36 39 41 47 20 kHz 50 kHz 120 130 150 50 kH...

Page 15: ...1 3 36 1 3 43 1 3 20 kHz 50 kHz 40 2 0 45 2 0 64 2 0 50 kHz 100 kHz 53 2 5 57 2 5 73 2 5 100 kHz 300 kHz 97 4 0 110 4 0 160 4 0 300 kHz 500 kHz 310 6 0 380 8 0 610 8 0 500 kHz 1 MHz 1200 6 0 1500 8 0...

Page 16: ...0 450 500 kHz 1 MHz 1100 1200 1500 70 V 1 10 Hz 20 Hz 55 60 62 63 20 Hz 40 Hz 19 29 31 39 40 Hz 20 kHz 15 23 25 34 20 kHz 50 kHz 22 25 27 39 50 kHz 100 kHz 64 68 85 100 kHz 300 kHz 140 150 180 300 kHz...

Page 17: ...100 kHz 0 5 2 5 220 mV 10 Hz 45 Hz 0 1 1 5 45 Hz 1 kHz 0 1 1 5 1 kHz 20 kHz 0 17 1 5 20 kHz 100 kHz 0 5 2 5 700 mV 10 Hz 45 Hz 0 1 1 5 45 Hz 1 kHz 0 1 1 5 1 kHz 20 kHz 0 17 1 5 20 kHz 100 kHz 0 5 2 5...

Page 18: ...dc inputs is not recommended due to the inherent thermal EMFs in a N connector See Operators Manual for details Relative DC Voltage Voltage Range 5 C of Calibration Temperature Measurement Mode ppm o...

Page 19: ...kHz 500 kHz 3 0 150 150 500 kHz 1 MHz 4 5 200 200 7 mV 10 Hz 20 Hz 0 4 15 15 20 Hz 40 Hz 0 4 15 15 40 Hz 20 kHz 0 4 15 15 20 kHz 50 kHz 0 4 15 15 10 M 50 kHz 100 kHz 0 8 25 25 100 kHz 300 kHz 1 5 60 6...

Page 20: ...0 8 0 100 kHz 300 kHz 18 10 0 10 0 300 kHz 500 kHz 30 20 0 20 0 500 kHz 1 MHz 90 50 0 50 0 7 V 10 Hz 20 Hz 8 1 5 3 0 20 Hz 40 Hz 5 1 5 3 0 40 Hz 20 kHz 5 1 5 3 0 20 kHz 50 kHz 5 2 0 3 0 50 k 50 kHz 1...

Page 21: ...pacitance approximately 100 pF 3 Inputs with a V Hz product 2 2 E7 are unspecified 4 Typical specification as determined by sourcing with the Fluke 5205A Precision Power Amplifier 5 Inputs that are 30...

Page 22: ...er reading 40 Hz 2 seconds decreasing linearly to 1 second at 200 Hz 200 Hz 1 second per reading Maximum Settling Time to Full Specifications in range lock Filter Off 1 sample dc 6 seconds 200 Hz 8 se...

Page 23: ...z 1 2 kHz 0 05 0 75 0 5 1 2 0 6 1 5 0 8 2 1 2 kHz 120 kHz 0 05 0 75 0 5 1 2 0 6 1 5 0 8 2 120 kHz 500 kHz 0 07 1 75 0 5 1 2 0 6 1 5 0 8 2 0 1 V 500 kHz 1 2 MHz 0 07 1 75 1 2 MHz 2 MHz 0 07 1 100 2 MHz...

Page 24: ...100 120 kHz 500 kHz 0 04 40 0 3 60 0 4 80 0 5 100 1 0 V 500 kHz 1 2 MHz 0 05 40 1 2 MHz 2 MHz 0 05 75 2 MHz 10 MHz 0 1 100 10 MHz 20 MHz 0 15 100 20 MHz 30 MHz 0 35 200 30 MHz 50 MHz 5 0 6 200 700 mV...

Page 25: ...z 50 MHz 5 6 0 6 200 1 Range limits same as INPUT 1 or INPUT 2 2 Relative to 1 kHz for 2 year specification multiply by 1 5 3 Add to flatness specifications when more than 3 C from calibration tempera...

Page 26: ...5790B Service Manual 1 20...

Page 27: ...dc voltage the RMS value of the ac voltage is equal to the dc voltage The FTS has extremely flat frequency response and has short term stability approaching 1 part per million ppm Highly stable resis...

Page 28: ...e same range amplifier The output of the FTS is measured again to yield M2 In Wideband mode the Wideband option module takes over the function of the Transfer assembly The chopped reference from the A...

Page 29: ...PT AMPLIFIERS RMS SENSOR A D DAC CPU M1 CHOPPER MEASURE INPUT 28 Hz BINDING POSTS TYPE N CONNECTOR ATTENUATORS AND PROTECTION MODULE PROTECTION INTERRUPT AMPLIFIERS RMS SENSOR A D DAC CHOPPER CPU M2 M...

Page 30: ...lator Guard Crossing A17 Transfer A10 A D Amplifier A15 DAC A16 Wideband A6 These analog assemblies are interfaced to the analog motherboard assembly A3 The guarded digital bus generated by the guard...

Page 31: ...Theory of Operation Analog Section Overview 2 2 5 AC LCD LVDS Signal ics001 eps Figure 2 2 Digital Section Block Diagram...

Page 32: ...e inputs routed through the A4 digital motherboard This assembly supplies outputs throughout the Product all of which are routed through the A4 digital motherboard The transformer assembly the filter...

Page 33: ...LED rings that surround the front panel terminals and the high voltage hazard LED Analog Section Detailed Circuit Description Detailed descriptions of each assembly in the analog section are provided...

Page 34: ...is used instead of dc for making the transfers for these reasons The square wave passes through the ac coupled amplifiers on the wideband board while dc would be blocked by the coupling caps Errors c...

Page 35: ...ves 0 V 3fff hex counts gives 2 2 V full scale The instrumentation amplifier amplifies the difference between the output of the null DAC and the output of the FTS circuit on the transfer assembly The...

Page 36: ...of the filter is a dc voltage which is the sum of the average voltages of the two waveforms The Output Stage which consists of the dc amplifier hybrid and the output buffer isolates the filter output...

Page 37: ...embly schematic diagram for the remaining theory discussion Wideband inputs are made to the WIDEBAND 50 Type N connector on the front panel and the option is activated by pressing the WBND key In wide...

Page 38: ...FOUR RANGES ONLY 50 ohms LOAD Z3 AMPLIFIER U3 CHOPPED REFERENCE 80 Hz SWITCHABLE ATTENUATORS 0 10 20 OR 30 dB Z4 DC OFFSET FEEDBACK AMPLIFIER U2 DC OFFSET FEEDBACK AMPLIFIER U5 RANGE COMPARATORS SENSO...

Page 39: ...calibration cycle selection determines which set of specifications from Chapter 1 are valid and used for CalShift Reports and for display when the Setup key is pushed Set the calibration cycle to matc...

Page 40: ...ring the passcode The front panel prompts for the passcode to unsecure the Product before it can accept new values to be eventually stored The passcode contains 1 to 8 decimal digits The Product is sh...

Page 41: ...ee sets of calibration constants are maintained in memory Associated with each set of constants is the date and ambient temperature of the calibration Figure 3 1 shows the three sets of calibration co...

Page 42: ...ications and substituted measurement equipment uncertainty During calibration select the fast medium or slow filter Calibrating Calibration Adjustment the Main Input Calibrate INPUT1 or INPUT2 by usin...

Page 43: ...or outputs at lethal voltages Self Calibrate a Fluke 752A Divider with a Fluke 8508A as the Null Detector 1 Connect the 5730A 752A and 8508A as shown in Figure 3 3 2 Set the 8508A to the 200 mV dc vol...

Page 44: ...the same for the switch in the 10 1 position as the 10 1 position but opposite sign For example if the BALANCE difference is 1 V then adjust the appropriate CALIBRATION adjustment until one switch pos...

Page 45: ...nection DC Voltage Source Characterization Values 1 Self Calibrate the reference divider according to the procedure in the Self Calibrate a Fluke 752A Divider with a Fluke 8508A as the Null Detector s...

Page 46: ...ard OFF 8508A Reference Multimeter NC hhp301 eps Figure 3 3 Zero Null Detector Connections 3 Set the reference divider to 0 1 V and the mode switch to OPERATE 4 Set the 8508A to dc V 200 mV range 7 di...

Page 47: ...der Standard INPUT REFERENCE STANDARD NULL DETECTOR 732B Voltage Reference Standard 732B DC STANDARD AC PWR IN CAL CHARGE LOW BAT 10V 1 018V CHASSIS GUARD 1 018V COM 10V COM SERIAL NUMBER External Sen...

Page 48: ...cterized nominal output relative to a reference cell Fluke 732B or 732A and a reference divider Fluke 752A Polarity is 1 for positive and 1 for negative Vstd is the output of Fluke 732B or 732A refere...

Page 49: ...Nominal Output V V POS 0 1 220 mV 100 mV 0 1 POS 0 1 2 2 V 100 mV 0 1 NEG 0 1 220 mV 100 mV 0 1 NEG 0 1 2 2 V 100 mV 0 1 NEG 1 2 2 V 1 V 0 1 NEG 1 11 V 1 V 0 1 POS 1 2 2 V 1 V 0 1 POS 1 11 V 1 V 1 PO...

Page 50: ...alent 50 Type N Female to Double Banana Plug Adapter Pomona Model 1740 or Equivalent Binding Posts to 50 Type N Male Adapter Pomona Model 1796 or Equivalent Low Thermal Test Leads Fluke 5440B 7002 or...

Page 51: ...LO VOLTAGE MODE CURRENT MODE 5725A STANDBY FAULT OVERLOAD CABLE OFF POWER 0 00050mV 1 year 213 days since calibration 12 21 12 10 52am External Sense OFF External Guard OFF Wideband OFF Setup Menu St...

Page 52: ...the 5730A to operate When the U unsettled indicator on the 5730A goes out push Continue 6 At each step you accept the default value by pushing Continue You do this because you have already applied you...

Page 53: ...Positive dc 70 mV Negative dc 60 mV dc 60 mV dc 35 Establishes gain and dc offset for the 70 mV range 220 mV Positive dc 220 mV Negative dc 200 mV dc 200 mV dc 10 Establishes gain and dc offset for th...

Page 54: ...z 6 mV RMS 50 kHz 6 mV RMS 100 kHz 6 mV RMS 300 kHz 6 mV RMS 500 kHz 6 mV RMS 800 kHz 6 mV RMS 1 MHz Generates flatness calibration data for the 7 mV range 22 mV AC 10 Hz 22 mV AC 100 Hz 22 mV AC 1 kH...

Page 55: ...2 V AC 300 kHz 2 2 V AC 500 kHz 2 2 V AC 1 MHz 2 V RMS 10 Hz 2 V RMS 100 Hz 2 V RMS 1 kHz 2 V RMS 10 kHz 2 V RMS 20 kHz 2 V RMS 50 kHz 2 V RMS 100 kHz 2 V RMS 300 kHz 2 V RMS 500 kHz 2 V RMS 1 MHz Gen...

Page 56: ...V RMS 100 kHz Generates flatness calibration data for the 1000 V range AC Calibration Adjustment Table 3 5 lists the equipment required to perform the ac calibration of the main input Before you begin...

Page 57: ...713141 2 DC 792 DC 5790 DC 5790 EXAMPLE DC 5790B VOLTAGE NOMINAL 2 0 V 1 713135 1 999799 1 999801 1 999800 1 713146 1 713141 1 713188 1 999858 FRE QUENC Y 10 Hz 792A CORRECTION PPM 14 792A DC DC AVER...

Page 58: ...ING DC 792 I DCI I DCI 2 DC792 AC 792 AC792 ACMEAS ACMEAS DC 792 NOMINAL DC 792 CORR 106 elu029 eps Figure 3 7 Worksheet for 60 mV to 600 mV AC Calibration Points Proceed as follows to perform ac cali...

Page 59: ...ibrator with 5725A INT SENSE INT GUARD Strap from GUARD to GROUND I N P U T 792A P OWER PACK POWER SUPP LY OUTPUT OPER ATE LOW B AT CHARGE Coaxial Tee Only No cable between 792A and 5790B 792A Power R...

Page 60: ...h 600 V Step 7 60 mV through 600 mV Step 8 2 mV through 20 mV 5 For an ac calibration point in the 2 V through 1000 V range proceed as follows a Obtain a copy of Figure 3 6 the worksheet for this grou...

Page 61: ...s for you to enter Enter your computation of AC MEAS in the Product using the keypad and push the ENTER key After you push ENTER the Control Display shows the progress of the internal process of the c...

Page 62: ...rmula k Observe the default EXACT VALUE on the display It shows the allowed number of decimal places for you to enter Enter your computation of AC MEAS in the Product using the keypad and push the ENT...

Page 63: ...Bootstrap Ranges a Calibrate the 22 mV range as follows 1 Lock the Product in the 70 mV range The 792A may be left attached although it is not used 2 Apply the requested voltage and frequency When the...

Page 64: ...oltage and frequency When the reading on the Product Measurement Display settles record the reading 3 Push the Continue softkey This automatically selects the 2 2 mV range 4 Enter the value you record...

Page 65: ...Cable and 50 term 3 2 Vrms 10 Hz 50 MHz 32 mV 3 2 Vrms 1 kHz Thermal Voltage Converter Precision Measurement EL1100 3 Vrms 10 Hz 50 MHz Calibrated for voltage flatness by Fluke Calibration Precision...

Page 66: ...0 dB Error PPM 20 dB Error PPM Total Error PPM 1 kHz Ref Error Enter Once 10 Hz 20 Hz x 50 Hz x 100 Hz x 200 Hz x 2 kHz x 10 kHz x 20 kHz x 50 kHz x 100 kHz x 200 kHz x 500 kHz x 700 kHz x 1 MHz x 1 2...

Page 67: ...on Part 1 2 Make sure equipment warmup requirements are met 3 Set the 5730A to output 3 2 V at 1 kHz The TVC output will be about 7 mV 4 Allow the TVC to stabilize warm up for at least 10 minutes then...

Page 68: ...200 The 50 load should be able to handle as much as 3 5 V without change in resistance Fluke 5730A WIDEBAND OUTPUT Fluke 5790B Input 1 Type N 50 Load elu036 eps Figure 3 12 Wideband Calibration Sourc...

Page 69: ...Calibration Source Characterization Amplutude Frequency Fluke 5790B Measured 3 5 V 1 kHz 3 2 V 1 kHz 2 V 1 kHz 1 V 1 kHz 0 64 V 1 kHz 0 6 V 1 kHz 0 32 V 1 kHz 0 2 V 1 kHz 0 1 V 1 kHz 60 mV 1 kHz 32 m...

Page 70: ...ration Adjust DC All Wideband 4 The Product will step to the first calibration point on the 7 V range 5 Use the number keys to enter the requested value recorded in Table 3 8 then push CONTINUE 6 The...

Page 71: ...790B See Table 3 9 for attenuators required for each range elu039 eps Figure 3 13 WIDEBAND Input Flatness Calibration Test Setup 2 The 5730A will be set to a nominal 3 2 V for all flatness calibration...

Page 72: ...V 10 Hz step 8 Set the 5730A to 3 2 V at 10 Hz and adjust the 5730A to the total error value at 10 Hz that was recorded in Table 3 8 during source characterization 9 Push the Continue key and the syst...

Page 73: ...valid the constants must be stored Select Cal Store then enter the passcode The Cal Store field changes from Secured to Open 23 Select Save Cal constants The display indicates Save Operation Complete...

Page 74: ...Hz source Make a measurement to establish the output of the source This value shall be used in consecutive measurement with the product 2 Connect the matching N type cable supplied as part of the AF o...

Page 75: ...rformance of the Main Input The calibration verification of the main input dc voltage is done on Input 2 Although equivalent for transfer function to Input 1 Input 2 is recommended for the dc voltage...

Page 76: ...V 20 V 19 999500 V 20 000500 V 12 70 V 20 V 19 99940 V 20 00060 V 13 70 V 60 V 59 99820 V 60 00180 V 14 220 V 60 V 59 99826 V 60 00174 V 15 220 V 200 V 199 99420 V 200 00580 V 16 700 V 200 V 199 9922...

Page 77: ...the Lower and Upper limit columns 11 Repeat steps 2 to 10 for each line of the verification table Verifying the Main Input INPUT 1 or 2 Verifying the Main Input requires measurements and calculations...

Page 78: ...22 0 002 1 MHz 6200 7500 No spec 11 0 0022 0 0006 1 kHz 2587 2587 No spec 12 0 007 0 006 10 Hz 1070 1070 No spec 13 0 007 0 006 20 Hz 587 587 No spec 14 0 007 0 006 40 Hz 427 427 No spec 15 0 007 0 00...

Page 79: ...42 0 07 0 06 500 kHz 760 803 No spec 43 0 07 0 06 1 MHz 1200 1230 No spec 44 0 22 0 06 1 kHz 62 63 34 45 0 22 0 06 1 MHz 1040 1100 No spec 46 0 22 0 2 10 Hz 218 218 210 47 0 22 0 2 20 Hz 92 93 82 48 0...

Page 80: ...8 2 2 0 6 1 MHz 840 900 No spec 79 2 2 1 0 10 Hz 200 200 200 80 2 2 1 0 20 Hz 65 66 63 82 2 2 1 0 40 Hz 22 24 18 83 2 2 1 0 1 kHz 22 24 18 84 2 2 1 0 20 kHz 22 24 18 85 2 2 1 0 50 kHz 45 46 43 86 2 2...

Page 81: ...0 Hz 200 200 123 114 22 20 0 20 Hz 66 67 123 115 22 20 0 40 Hz 25 27 21 116 22 20 0 1 kHz 25 27 21 117 22 20 0 20 kHz 25 27 21 119 22 20 0 50 kHz 46 48 44 120 22 20 0 100 kHz 80 81 No spec 121 22 20 0...

Page 82: ...700 600 0 100 kHz 400 500 No spec 148 1000 1000 0 100 Hz 37 38 33 149 1000 1000 0 1 kHz 37 38 33 150 1000 1000 0 20 kHz 37 38 33 151 1000 1000 0 30 kHz 120 130 No spec 152 1000 600 0 40 Hz 37 38 33 15...

Page 83: ...ble 3 2 The procedure to obtain those settings is described under Characterizing the DC Source at the beginning of the calibration instructions in this chapter Use Figure 3 16 and nominal dc outputs f...

Page 84: ...3 2 POSITIVE ERROR DISPLAY FROM TABLE 3 2 NEGATIVE 792A DC DC AVERAGE AC AC DC ERROR DC 792 DC 5790 AC 792 AC 5790 DC 5790B DC AVERAGE I DCI I DCI 2 AC DC ERROR PPM 10 792 CORR 6 DC 5790 DC 5790 AC 5...

Page 85: ...E NOMINAL FREQUENCY 792A CORRECTION PPM 792A DC DC AVERAGE AC AC DC ERROR DC 792 DC 5790 AC 792 AC 5790 DC 5790B DC AVERAGE I DCI I DCI 2 AC DC ERROR PPM 10 792 CORR 6 DC 5790 DC 5790 AC 5790 DC 792 D...

Page 86: ...3 2 POSITIVE ERROR DISPLAY FROM TABLE 3 2 NEGATIVE 792A DC DC AVERAGE AC AC ERROR DC 792 AC 792 AC 5790 DC 5790B DC AVERAGE I DCI I DCI 2 10 792 CORR 6 10 6 AC 5790 DC NOMINAL DC NOMINAL AC 792 DC 792...

Page 87: ...case you take the measurements and make calculations in the same way as Regions I and III to obtain the ac dc errors You may have already calculated these errors if you are verifying both the ac dc a...

Page 88: ...ISPLAY FROM TABLE 3 2 POSITIVE ERROR DISPLAY FROM TABLE 3 2 NEGATIVE DC DC 5790 DC ERROR DC 5790B READING DC 5790 I DCI I DCI 2 10 6 DC 5790 DC NOMINAL DC ERROR PPM DC NOMINAL elu046 eps Figure 3 17 W...

Page 89: ..._Err ACDUT_Ver_R_Linearity_Err Where ACerr is the final result for the amplitude range under test measured in V V ACDUT_R is the mV measurement of the DUT in the range being verified ACDUT_Ver_R is th...

Page 90: ...able 3 15 8 copies of Table 3 16 one for each voltage range and 1 copy of the overall test record Table 3 17 Note If verifying Option 5790B 3 frequencies above 30 MHz are not applicable Table 3 15 Wid...

Page 91: ...B Error PPM 20 dB Error PPM 20 dB Error PPM 20 dB Error PPM Total Error PPM 1 kHz Ref Error Enter Once 10 Hz X 20 Hz X 50 Hz X 105 Hz X 200 Hz X 2 kHz X 10 kHz X 20 kHz X 50 kHz X 120 kHz X 200 kHz X...

Page 92: ...500 kHz 0 03 0 31 14 7 V 3 2 V 700 kHz 0 05 No Spec No Spec 15 7 V 3 2 V 1 MHz 0 05 No Spec No Spec 16 7 V 3 2 V 1 2 MHz 0 05 No Spec No Spec 17 7 V 3 2 V 2 MHz 0 05 No Spec No Spec 18 7 V 3 2 V 3 MHz...

Page 93: ...0 03 0 33 45 2 2 V 1 0 V 50 kHz 0 03 0 33 46 2 2 V 1 0 V 120 kHz 0 03 0 33 47 2 2 V 1 0 V 200 kHz 0 03 0 33 48 2 2 V 1 0 V 500 kHz 0 03 0 33 49 2 2 V 1 0 V 700 kHz 0 05 No Spec No Spec 50 2 2 V 1 0 V...

Page 94: ...78 700 mV 320 mV 10 kHz 0 03 0 36 79 700 mV 320 mV 20 kHz 0 03 0 36 80 700 mV 320 mV 50 kHz 0 03 0 36 81 700 mV 320 mV 120 kHz 0 03 0 36 82 700 mV 320 mV 200 kHz 0 03 0 36 83 700 mV 320 mV 500 kHz 0 0...

Page 95: ...z 0 04 0 36 109 220 mV 100 mV 105 Hz 0 04 0 36 110 220 mV 100 mV 200 Hz 0 04 0 36 112 220 mV 100 mV 2 kHz 0 04 0 36 113 220 mV 100 mV 10 kHz 0 04 0 36 114 220 mV 100 mV 20 kHz 0 04 0 36 115 220 mV 100...

Page 96: ...0 mV 32 mV 20 Hz 0 10 0 46 142 70 mV 32 mV 50 Hz 0 05 0 46 143 70 mV 32 mV 105 Hz 0 05 0 46 144 70 mV 32 mV 200 Hz 0 05 0 46 146 70 mV 32 mV 2 kHz 0 05 0 46 147 70 mV 32 mV 10 kHz 0 05 0 46 148 70 mV...

Page 97: ...0 35 No Spec No Spec 174 70 mV 32 mV 50 MHz 0 35 No Spec No Spec 175 22 mV 10 mV 10 Hz 0 10 0 5 176 22 mV 10 mV 20 Hz 0 10 0 5 177 22 mV 10 mV 50 Hz 0 05 0 5 178 22 mV 10 mV 105 Hz 0 05 0 5 179 22 mV...

Page 98: ...0 mV 40 MHz 0 37 No Spec No Spec 208 22 mV 10 mV 45 MHz 0 37 No Spec No Spec 209 22 mV 10 mV 50 MHz 0 37 No Spec No Spec 210 7 mV 3 2 mV 10 Hz 0 10 0 55 211 7 mV 3 2 mV 20 kHz 0 10 0 55 212 7 mV 3 2 m...

Page 99: ...pec No Spec 240 7 mV 3 2 mV 30 MHz 0 40 No Spec No Spec 241 7 mV 3 2 mV 35 MHz 0 40 No Spec No Spec 242 7 mV 3 2 mV 40 MHz 0 40 No Spec No Spec 243 7 mV 3 2 mV 45 MHz 0 40 No Spec No Spec 244 7 mV 3 2...

Page 100: ...MHz 0 88 No Spec No Spec 273 2 2 mV 1 mV 26 MHz 0 88 No Spec No Spec 274 2 2 mV 1 mV 28 MHz 0 88 No Spec No Spec 275 2 2 mV 1 mV 30 MHz 0 88 No Spec No Spec 276 2 2 mV 1 mV 35 MHz 0 88 No Spec No Spe...

Page 101: ...source by following the procedure under the heading Characterizing the AC Source in the Wideband Calibration procedure earlier in this chapter Use the Wideband Flatness Verification Worksheet Table 3...

Page 102: ...are set relative to the nominal 3 2 V level 17 Verify all other ranges in the same way Verification of AF Option The following procedure is a part of calibration only if the 5790B AF Option is install...

Page 103: ...urements in dBm instead of mW Note The test record in Table 3 19 is in mW A custom table for the test record must be created if evaluation is to be performed in dBm 10 Turn on the characterized source...

Page 104: ...5790B Service Manual 3 66...

Page 105: ...e circuit boards Access procedures are provided for those who want to replace a faulty module only Clean the Exterior To keep the Product looking like new clean the case front panel keys and lens usin...

Page 106: ...duct off and remove the mains power cord Stop for two minutes to let the power assemblies discharge before you open the fuse door Replace a blown fuse with exact replacement only for continued protect...

Page 107: ...le 4 1 Replacement Fuses Line Voltage Setting Fuse Description Fluke Part Number 100 V to 120 V T 1 5 A 250 V SB 109231 220 V to 240 V T 1 5 A 250 V SB 109231 115V 115V 115V 115V 230V PRSR 1 2 3 4 hhp...

Page 108: ...is operated in a dusty environment The air filter is accessible from the rear panel of the Calibrator To clean the air filter refer to Figure 4 3 1 Disconnect mains power 2 Remove the filter element...

Page 109: ...Maintenance Introduction 4 4 5 hvi026 eps Figure 4 3 Air Filter Access...

Page 110: ...nine Phillips head screws The bottom Analog Section cover is secured with eight Phillips head screws three short five longer Rear Panel Removal and Installation Once the top and bottom covers are rem...

Page 111: ...Remove one end of the white cable that is connected between the A2 board and display assembly 2 Remove the nine screws from the metal cover 3 Flip the metal cover to one side to access display 4 Deta...

Page 112: ...rocedure to remove the front panel The front panel can remain connected and positioned on its handles in front of the Product 7 Remove the two screws from the front bulk head that fasten to the black...

Page 113: ...eference Outside Of Limits 109 Measured And Entered Input Don t Match 110 Frequency Doesn t Match Expected 111 Input Is Of Wrong Polarity 112 Input Is Changing During Cal 113 Input Tripped Protection...

Page 114: ...er 300 Level Faults Inguard processor 300 A17 Guardcrossing ROM Checksum 301 A17 Guardcrossing RAM 302 A17 Guardcrossing DUART 303 A17 Guardcrossing Watchdog 304 Hardware Initialization 400 Level Faul...

Page 115: ...sum Bad 507 Recalling Unsaved Instrument State 508 Already Printing A Report 509 External Guard Not Available 510 Display Brightness Setting Exceeds Limits 600 Level Faults Firmware updater 601 Backup...

Page 116: ...627 Failed to read the new source file config cal 628 Can not remove existing backup file config cal 629 Can not rename existing file to backup file config cal 630 Source file does not exist config c...

Page 117: ...file 660 File on USB device same as installed file per timestamp 661 Error unmounting USB device 662 Can not extract ver from line 1 of src file config cal 663 Can not extract ver from line 1 of dest...

Page 118: ...rations manager 1100 Guard Crossing Protocol Failed To Start 1101 Analog Hardware Initialization Failed 1102 Giving Up On Initializing Hardware 1103 NV Integrity Check Failed 1104 Analog Hardware Cont...

Page 119: ...own command 1302 Bad Parameter Count 1303 Bad Keyword 1304 Bad Parameter Type 1305 Bad Parameter Unit 1306 Bad Parameter Value 1307 488 2 I O DEADLOCK 1308 488 2 INTERRUPTED Query 1309 488 2 UNTERMINA...

Page 120: ...String Too Long 1375 Trigger GET String Too Long 1380 File Operation Failed 1400 Level Faults Report generation 1400 Unknown Report Requested 1401 Unknown Report Device Requested 1402 Serial Port Tim...

Page 121: ...raming Parity Overrun on chan d 1702 Input queue overflow on chan d 1705 Uart failed self Test 1707 Remote interface UART 1708 Remote interface USB 1709 Guard crossing UART 1710 Boost Crossing UART 18...

Page 122: ...Is Secured 2204 Passcode Must Be 1 to 8 Digits 2205 Cannot Store Cal Is Secured 2206 Invalid Security Passcode 2207 Cannot Set Clock Cal Is Secured 2208 Invalid command 2300 Level Faults Software Tim...

Page 123: ...Any special notes for example factory selected part Caution A symbol indicates a device that may be damaged by static discharge How to Obtain Parts Electrical components may be ordered from Fluke Cal...

Page 124: ...4716 PCA DAC A16 4628266 1 7 5790B 4717 PCA REGULATOR GUARD CROSSING A17 4628275 1 8 5790B 4718 PCA FILTER A18 4628282 1 9 5790B 4720 PCA MAIN CPU A20 4628294 1 A6 Option 5790B 7606 PCA WIDEBAND A6 T...

Page 125: ...75 PAN PHILLIPS STEEL ZINC CLEAR LOCK 114124 4 39 5700A 8020 WASHER LOW THERMAL 760892 3 40 5730A 4201 TRANSFORMER MODULE ASSY 4233875 1 42 POWER ENTRY MODULE 6A 250V FILTER FUSE DPST SWITCH FLANGE MT...

Page 126: ...4406 CABLE LVDS DISPLAY 4312028 1 65 5730A 4407 CABLE DISPLAY BACKLIGHT 4312037 1 66 5730A 4408 CABLE TOUCH CONTROLLER 4312043 1 67 5730A 8005 CLEAR STATIC CLING VINYL 4365799 1 68 NUT NUT EXT LOCK S...

Page 127: ...1 117 5730A 2005 BOTTOM COVER 4104383 1 111 5790B 2013 FRAME FILTER 4604458 1 110 5700A 2009 INSULATOR DIGITAL MOTHERBOARD 761247 1 123 5790B 2004 FRONT PANEL SHEET METAL 4410954 1 112 5730A 2019 LCD...

Page 128: ...5790B Service Manual 5 6 63 116 88 4 56 89 117 8 6 7 5 57 60 5790B Final Assembly 1 of 4 5790b_fa_1 eps Figure 5 1 Final Assembly...

Page 129: ...n Parts 5 5 7 31 13 14 19 20 17 11 26 25 64 56 16 12 15 75 123 18 122 1 112 75 85 67 60 18 18 32 60 76 29 28 30 83 61 64 18 75 65 60 66 11 22 12 78 33 10 79 57 23 5790B Final Assembly 2 of 4 5790b_fa_...

Page 130: ...5790B Service Manual 5 8 74 71 72 44 42 77 45 46 58 47 48 43 60 68 105 50 56 13 111 70 70 70 74 68 73 73 5790B Final Assembly 3 of 4 55 57 54 84 59 5790b_fa_3 eps Figure 5 1 Final Assembly Cont...

Page 131: ...eplacable Parts How to Obtain Parts 5 5 9 5790B Final Assembly 4 of 4 53 53 60 61 118 119 60 40 9 36 37 37 51 3 2 62 109 106 110 52 108 38 69 49 121 60 60 53 62 61 5790b_fa_4 eps Figure 5 1 Final Asse...

Page 132: ...5790B Service Manual 5 10...

Page 133: ...Appendices Appendix Title Page A Glossary of AC DC Transfer Related Terms A 1 B ASCII and IEEE 488 Bus Codes B 1 C Calibration Constant Information C 1...

Page 134: ...5790B Service Manual...

Page 135: ...t uses a calibration system within the instrument to reduce the number of required external standards to a small number of artifact standards The Fluke 5730A Calibrator uses Artifact Calibration Artif...

Page 136: ...voltage to the same RMS voltage A positive AC DC difference indicates that more alternating than direct voltage is required to produce the same reading Base Units Units in the SI system that are dime...

Page 137: ...nce Voltage The maximum voltage that a constant current source can supply Confidence Level A percentage indicating certainty or assurance that an associated condition is true Control Chart A chart dev...

Page 138: ...r is when the slope of a calibrator s displayed output vs its true output is not exactly 1 A calibrator with only gain error no offset or linearity error will read 0 V with 0 V on the display but some...

Page 139: ...and systematic components of error relative to national or other designated standards is quantified and sufficiently small to meet requirements Maximum Transfer Time Maximum time that an AC DC transfe...

Page 140: ...ly predictable Primary Standard A standard defined and maintained by some authority and used to calibrate all other secondary standards Process Metrology Tracking the accuracy drift of calibration and...

Page 141: ...nsfer standard for the same DC input but with polarity reversed The output logged for the DC reference should be the average of the two readings RF Radio Frequency The frequency range of radio waves f...

Page 142: ...the freedom from drift relative to a reference value over time and over changes in other variables such as temperature Note that stability is not the same as uncertainty Standard A device that is used...

Page 143: ...ith another This does not include the uncertainty of the transfer standard Transfer Stability Change in the AC DC Difference correction over time with stated conditions Transfer Standard Any standard...

Page 144: ...ne ampere flowing through a one ohm load In instrumentation wideband refers to the ability to measure or generate signals in the radio frequency spectrum Verification The comparison of a measurement o...

Page 145: ...1 001 01 0000 0001 GTL STX 2 002 02 0000 0010 ETX 3 003 03 0000 0011 EOT 4 004 04 0000 0100 SDC ENQ 5 005 05 0000 0101 PPC ACK 6 006 06 0000 0110 BELL 7 007 07 0000 0111 BS 8 010 08 0000 1000 GET HT 9...

Page 146: ...032 1A 0001 1010 ESC 27 033 1B 0001 1011 FS 28 034 1C 0001 1100 GS 29 035 1D 0001 1101 RS 30 036 1E 0001 1110 US 31 037 1F 0001 1111 SPACE 32 040 20 0010 0000 0 MLA LISTEN ADDRESSES 33 041 21 0010 000...

Page 147: ...0011 1010 26 MLA 59 073 3B 0011 1011 27 MLA 60 074 3C 0011 1100 28 MLA 61 075 3D 0011 1101 29 MLA 62 076 3E 0011 1110 30 MLA 63 077 3F 0011 1111 UNL 64 100 40 0100 0000 0 MTA TALK ADDRESSES A 65 101 4...

Page 148: ...133 5B 0101 1011 27 MTA 92 134 5C 0101 1100 28 MTA 93 135 5D 0101 1101 29 MTA 94 136 5E 0101 1110 30 MTA _ 95 137 5F 0101 1111 UNT 96 140 60 0110 0000 0 MSA SECONDARY ADDRESSES a 97 141 61 0110 0001...

Page 149: ...0111 0010 18 MSA s 115 163 73 0111 0011 19 MSA t 116 164 74 0111 0100 20 MSA u 117 165 75 0111 0101 21 MSA v 118 166 76 0111 0110 22 MSA w 119 167 77 0111 0111 23 MSA x 120 170 78 0111 1000 24 MSA y 1...

Page 150: ...5790B Service Manual B 6...

Page 151: ...ts DAC_RATIO 16500 0 DAC coarse fine count ratio AD_DIV_Z 0 0 A D divided 1 6 range offset in counts AD_DIV_G 1 397E 8 A D divided 1 6 range gain V count AD_X1_Z 0 0 A D x1 range offset in counts AD_X...

Page 152: ...7660e 03 Autogenerated SENSOR_C2_WB 0 0 Autogenerated Group AC_LINEARITY Name Default Function LN_C 02 Coefficient of V VEX F FEX LN_LIM 100 0 Linearitization is done only below this frequency LN_VHI...

Page 153: ...ion for 22 mv range L1_70MV 32e 6 AC Linearity correction for 70 mv range L1_220MV 0 AC Linearity correction for 220 mv range L1_700MV 18 4e 6 AC Linearity correction for 700 mv range L1_2_2V 11 5e 6...

Page 154: ...figuration HF_LIMHI 105 0E 3 Point above which we switch to high freq configuration MIN_FREQ 9 0 Below this point we consider the input to be DC MAX_FREQ 1 21E 6 Highest frequency measure normally MAX...

Page 155: ...nge flatness correction 1 10 Hz F2_2_2MV 1 0 2_2MV range flatness correction 2 100 Hz F3_2_2MV 1 0 2_2MV range flatness correction 3 1 kHz F4_2_2MV 1 0 2_2MV range flatness correction 4 10 kHz F5_2_2M...

Page 156: ...0 7MV range flatness correction 5 20 kHz F6_7MV 1 0 7MV range flatness correction 6 50 kHz F7_7MV 1 0 7MV range flatness correction 7 100 kHz F8_7MV 1 0 7MV range flatness correction 8 300 kHz F9_7MV...

Page 157: ...0MV Name Default Function DI_70MV 100 0 70MV range DAC volts per input volt OF_70MV 0 0 70MV range DC offset Group ZC_70MV Name Default Function Z_70MV 0 0 70MV range zero SHO_70MV 0 0 70MV AUX input...

Page 158: ...orrection 3 1 kHz F4_220MV 1 0 220MV range flatness correction 4 10 kHz F5_220MV 1 0 220MV range flatness correction 5 20 kHz F6_220MV 1 0 220MV range flatness correction 6 50 kHz F7_220MV 1 0 220MV r...

Page 159: ...MHz Group DC_2_2V Name Default Function DI_2_2V 5 0 2_2V range DAC volts per input volt OF_2_2V 0 0 2_2V range DC offset Group ZC_2_2V Name Default Function Z_2_2V 0 0 2_2V range zero SHO_2_2V 0 0 2_2...

Page 160: ...z F4_7V 1 0 7V range flatness correction 4 10 kHz F5_7V 1 0 7V range flatness correction 5 20 kHz F6_7V 1 0 7V range flatness correction 6 50 kHz F7_7V 1 0 7V range flatness correction 7 100 kHz Group...

Page 161: ...on 3 1 kHz F4_22V 1 0 22V range flatness correction 4 10 kHz F5_22V 1 0 22V range flatness correction 5 20 kHz F6_22V 1 0 22V range flatness correction 6 50 kHz F7_22V 1 0 22V range flatness correctio...

Page 162: ...ss correction 3 1 kHz F4_70V 1 0 70V range flatness correction 4 10 kHz F5_70V 1 0 70V range flatness correction 5 20 kHz F6_70V 1 0 70V range flatness correction 6 50 kHz F7_70V 1 0 70V range flatnes...

Page 163: ...rection 8 300 kHz Group DC_700V Name Default Function DI_700V 0 01 700V range DAC volts per input volt OF_700V 0 0 700V range DC offset Group ZC_700V Name Default Function Z_700V 0 0 700V range zero S...

Page 164: ...1_1000V 1 0 1000V range flatness correction 1 10 Hz F2_1000V 1 0 1000V range flatness correction 2 100 Hz F3_1000V 1 0 1000V range flatness correction 3 1 kHz F4_1000V 1 0 1000V range flatness correct...

Page 165: ...s correction 10 70 kHz F11_2_2MV_WB 1 0 2_2MV range wideband input flatness correction 11 100 kHz F12_2_2MV_WB 1 0 2_2MV range wideband input flatness correction 12 500 kHz F13_2_2MV_WB 1 0 2_2MV rang...

Page 166: ...correction 9 50 kHz F10_7MV_WB 1 0 7MV range wideband input flatness correction 10 70 kHz F11_7MV_WB 1 0 7MV range wideband input flatness correction 11 100 kHz F12_7MV_WB 1 0 7MV range wideband inpu...

Page 167: ...atness correction 10 70 kHz F11_22MV_WB 1 0 22MV range wideband input flatness correction 11 100 kHz F12_22MV_WB 1 0 22MV range wideband input flatness correction 12 500 kHz F13_22MV_WB 1 0 22MV range...

Page 168: ...on 10 70 kHz F11_70MV_WB 1 0 70MV range wideband input flatness correction 11 100 kHz F12_70MV_WB 1 0 70MV range wideband input flatness correction 12 500 kHz F13_70MV_WB 1 0 70MV range wideband input...

Page 169: ...eband input flatness correction 5 4 kHz F6_220MV_WB 1 0 220MV range wideband input flatness correction 6 30 kHz F7_220MV_WB 1 0 220MV range wideband input flatness correction 7 100 kHz F8_220MV_WB 1 0...

Page 170: ...tness correction 5 4 kHz F6_700MV_WB 1 0 700MV range wideband input flatness correction 6 30 kHz F7_700MV_WB 1 0 700MV range wideband input flatness correction 7 100 kHz F8_700MV_WB 1 0 700MV range wi...

Page 171: ...and input flatness correction 6 30 kHz F7_2_2V_WB 1 0 2_2V range wideband input flatness correction 7 100 kHz F8_2_2V_WB 1 0 2_2V range wideband input flatness correction 8 300 kHz F9_2_2V_WB 1 0 2_2V...

Page 172: ...eband input flatness correction 7 100 kHz F8_7V_WB 1 0 7V range wideband input flatness correction 8 300 kHz F9_7V_WB 1 0 7V range wideband input flatness correction 9 1 MHz F10_7V_WB 1 0 7V range wid...

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