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Fluke 732B Instruction Manual

Fluke 732B Instruction Manual

Dc reference standard
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732B/734A
DC Reference Standard
Instruction Manual
PN 869321
March 1992 Rev.3, 11/97
© 1993, 1994, 1997 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
www.valuetronics.com

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Summary of Contents for Fluke 732B

  • Page 1 ® 732B/734A DC Reference Standard Instruction Manual PN 869321 March 1992 Rev.3, 11/97 © 1993, 1994, 1997 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies. www.valuetronics.com...

  • Page 2: Limited Warranty And Limitation Of Liability

    Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.

  • Page 3: Declaration Of The Manufacturer Or Importer

    Declaration of the Manufacturer or Importer We hereby certify that the Fluke Models 732B and 734A are in compliance with BMPT Vfg 243/1991 and is RFI suppressed. The normal operation of some equipment (e.g. signal generators) may be subject to specific restrictions. Please observe the notices in the users manual.
  • Page 4 www.valuetronics.com...

  • Page 5: Safety Summary

    Safety Summary Safety Terms in this Manual Instrument models described in this manual (Models 732B and 734A) have been designed and tested in accordance with IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus. This Instruction Manual contains information, warnings, and cautions that must be followed to ensure safe operation and to maintain the instrument in a safe condition.

  • Page 6: Do Not Operate In Explosive Atmospheres

    Do Not Operate in Explosive Atmospheres To avoid explosion, do not operate the instrument in an atmosphere of explosive gas. Do Not Attempt to Operate if Protection May be Impaired If the instrument appears damaged or operates abnormally, protection may be impaired. Do not attempt to operate it.

  • Page 7: Table Of Contents

    2-3. Selecting Line Voltage and Accessing the Fuse ........2-4 2-4. Connecting to Line Power ..............2-5 2-5. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure 2-5 Operation....................3-1 3-1. Introduction ................... 3-3 3-2. Summary of the Features ............... 3-3 3-3.
  • Page 8 732B/734A Instruction Manual 3-12. Powering the Standard from a 732B-7001 ........3-12 3-13. Replacing the Internal Battery ............3-13 3-14. Connecting Cables to the Output ............3-14 3-15. Connecting the GUARD and GROUND .......... 3-15 3-16. Monitoring Oven Temperature .............. 3-16 3-17.
  • Page 9 Contents (continued) 5-14. Accessing the A5 Battery Charger ............ 5-13 5-15. Removing the Power Transformer Assembly ........5-13 5-16. Troubleshooting ..................5-14 5-17. 10V Reference Performance Test ............. 5-14 5-18. Troubleshooting the A5 Battery Charger Assembly ......5-14 5-19. Transformer/Rectifier/Filter ............5-15 5-20.
  • Page 10 732B/734A Instruction Manual www.valuetronics.com...

  • Page 11: List Of Tables

    Table Title Page 2-1. Standard Equipment....................2-3 2-2. AC Line Cords Available for Fluke Instruments............. 2-3 3-1. 732B DC Standard Front Panel Features..............3-5 3-2. 732B DC Standard Rear Panel Features..............3-7 3-3. 732B-7001 External Battery/Charger Front Panel Features........3-8 3-4.
  • Page 12 732B/734A Instruction Manual www.valuetronics.com...
  • Page 13 Line Power Cords Available for Fluke Instruments..........2-4 2-2. Line Power Label and Fuse Location ..............2-7 2-3. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure....2-8 3-1. 732B DC Standard Front Panel Features..............3-4 3-2. 732B DC Standard Rear Panel Features..............3-6 3-3.
  • Page 14 732B/734A Instruction Manual viii www.valuetronics.com...

  • Page 15: Introduction And Specifications

    Accessory Y734 Rack Mount Kit ............1-4 1-6. Calibration Options ................1-5 1-7. 732B-000 Special Calibration............1-5 1-8. 732B-100 Special Calibration and Drift Characterization....1-5 1-9. 732B-200 On-Site Calibration ............1-5 1-10. Warranty Information................1-5 1-11. Service and Reshipment Information............. 1-6 1-12.
  • Page 16 732B/734A Instruction Manual www.valuetronics.com...

  • Page 17: Introduction

    You can use the 732B 1.018V output to transfer the "volt" at the 1.018V level from one set of saturated standard cells to another. You can also use the 1.018V output as a working standard with older equipment that requires a standard cell voltage input.

  • Page 18: Hardware Options

    When the external battery is completely charged and connected to a completely charged 732B, it increases 732B battery operating time from 72 to 130 hours. Just as in the 732B, the charger in the 732B-7001 takes 36 hours to completely charge the battery (with no load on the battery).

  • Page 19: Calibration Options

    Unless requested at time of order, the 732B is shipped cold (not under battery power) and will need to be calibrated on receipt. A procedure to calibrate a 732B using a reference 732B as a transfer standard is provided in Section 5. After calibration, the 732B must be kept powered by ac power or battery, even during shipment.

  • Page 20: Service And Reshipment Information

    Section 5 for theory, troubleshooting, and calibration information. Schematic diagrams are in Section 7. The 732B and 734A are designed to withstand the shock and vibration of air and ground shipment, provided that you protect the equipment with a proper shipping container.
  • Page 21 Each data point for the computation of the regression parameters is the average voltage of 50 readings taken in a 50-second measurement period. Stability for the 732B outputs at 23 ±1°C is specified as follows: Stability (± ppm) Output Voltage...

  • Page 22: Load Regulation

    732B/734A Instruction Manual Output Adjustability - 10V: 0.15 ppm resolution - 1.018V: Set at nominal ±1 mV. No adjustment is provided. The 10V adjustment is done with a set of four decade-control switches with a range of at least 4 mV.
  • Page 23 When fully charged, the internal batteries will operate the 732B for a minimum of 72 hours at 23 ±5°C, with 0 to 0.1 mA current drain at the 10V output. Model 732B-7001 contains the same battery and charger as Model 732B.
  • Page 24 The dc source must be rated for 300 mA or more. Isolation The resistance from any of the 732B binding posts to earth (chassis) ground or to ac line power is greater than 10,000 MΩ shunted by less than 1000 pF.
  • Page 25 CHASSIS (5.28 in) 10V COM 1.018V COM GUARD SERIAL NUMBER 732B 43.2 cm (17.0 in) 734A DC REFERENCE STANDARD 732B DC STANDARD 732B DC STANDARD 732B DC STANDARD 732B DC STANDARD AC PWR IN CAL CHARGE LOW BAT AC PWR...
  • Page 26 732B/734A Instruction Manual 1-12 www.valuetronics.com...

  • Page 27: Installation

    Title Page 2-1. Introduction .................... 2-3 2-2. Unpacking and Inspection..............2-3 2-3. Selecting Line Voltage and Accessing the Fuse ........2-4 2-4. Connecting to Line Power..............2-5 2-5. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure 2-5 www.valuetronics.com...
  • Page 28 732B/734A Instruction Manual www.valuetronics.com...

  • Page 29: Introduction

    However, you should inspect the standard carefully for damage, and immediately report any damage to the shipper. Instructions for inspection and claims are included in the shipping container. If you need to reship the 732B, refer to Service and Reshipment Information in Section 1.

  • Page 30: Selecting Line Voltage And Accessing The Fuse

    LC-4 LC-5 LC-6 LC-7 k2f.eps Figure 2-1. Line Power Cords Available for Fluke Instruments Selecting Line Voltage and Accessing the Fuse 2-3. Caution To avoid blowing the ac line fuse, verify the position of the line voltage selection drum before plugging in the line cord. Rotate the drum if necessary to match local line power.

  • Page 31: Connecting To Line Power

    Enclosure 2-5. When you slide a 732B or 732B-7001 into one of the instrument bays in the chassis, it automatically connects to the ac power bus. The 734A-7001 Instrument Enclosure provides an ac line power bus only. There is no fuse in the 734A-7001. All fusing and line voltage selection is done in the installed 732Bs and 732B-7001s.
  • Page 32 732B/734A Instruction Manual 3. Insert the 732B or 732B-7001 into one of the four instrument bays. Guides along the bottom and a rear panel alignment stud inside the enclosure ensure correct installation. 4. When the unit is fully installed, lift and engage the locking lever at the bottom of the 732B or 732B-7001 front panel and finger-tighten the thumbscrew.
  • Page 33 Installation Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure J502 MONITOR/EXT BAT IN RESET (SEE MANUAL FOR PINOUT) CAUTION: FOR FIRE PROTECTION, 120Vac REPLACE ONLY WITH A 250V FUSE OF INDICATED VALUE 100/120 T 3/16 (3AG) 220/240 50/60 Hz 66W MAX...
  • Page 34 732B/734A Instruction Manual k4f.eps Figure 2-3. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure www.valuetronics.com...

  • Page 35: Operation

    732B DC Standard Front Panel............3-3 3-4. 732B DC Standard Rear Panel............3-3 3-5. 732B-7001 External Battery and Charger Front Panel ...... 3-3 3-6. 732B-7001 External Battery and Charger Rear Panel ....... 3-3 3-7. 734A-7001 Instrument Enclosure Front Panel ........3-3 3-8.
  • Page 36 732B/734A Instruction Manual www.valuetronics.com...

  • Page 37: Introduction

    Introduction 3-1. Information in this section tells you how to operate the 732B and 734A on battery and ac line power. This section begins with a description of the features of the models covered in this manual. Instructions for how to power the standard, connect it to other instruments, and use it to make a voltage transfer follow.
  • Page 38 732B/734A Instruction Manual 732B DC STANDARD AC PWR IN CAL CHARGE LOW BAT 1.018V CHASSIS 10V COM 1.018V COM GUARD SERIAL NUMBER k5f.eps Figure 3-1. 732B DC Standard Front Panel Features www.valuetronics.com...
  • Page 39 This indicator goes out in response to an excessive drop in battery voltage or a gross change in oven temperature. Once you have recalibrated the 732B, you can reset the IN CAL indicator by pressing the recessed rear panel CAL RESET switch.
  • Page 40 (SEE MANUAL FOR PINOUT) CAUTION: FOR FIRE PROTECTION, 120Vac REPLACE ONLY WITH A 250V FUSE OF INDICATED VALUE 100/120 T 3/16 (3AG) 220/240 50/60 Hz 66W MAX FLUKE CORPORATION MADE IN USA k6f.eps Figure 3-2. 732B DC Standard Rear Panel Features www.valuetronics.com...
  • Page 41 Table 3-2. 732B DC Standard Rear Panel Features Item Feature Description Recessed If the IN CAL indicator is off and normal 732B operating CAL RESET conditions are met, pressing this momentary-contact switch for Switch approximately 4 seconds resets IN CAL. You should calibrate the 732B before resetting the IN CAL indicator.
  • Page 42 732B-7001 EXTERNAL BATTERY/CHARGER AC PWR CHARGE LOW BAT SERIAL NUMBER k7f.eps Figure 3-3. 732B-7001 External Battery/Charger Front Panel Features Table 3-3. 732B-7001 External Battery/Charger Front Panel Features Item Feature Description AC PWR Indicator Lights whenever the battery unit is connected to ac line power.

  • Page 43: Operation

    T 3/16 (3AG) 220/240 50/60 Hz 66W MAX FLUKE CORPORATION MADE IN USA k8f.eps Figure 3-4. 732B-7001 External Battery/Charger Rear Panel Features Table 3-4. 732B-7001 External Battery/Charger Rear Panel Features Item Fearture Description BATTERY Switch Connects and disconnects the battery from the internal charger.
  • Page 44 732B-7001 rear panel ac power input when you install a 732B unit into the enclosure. Alignment Pin This alignment pin mates with an alignment hole on the rear panel of the 732B or 732B-7001. It ensures that the ac line connectors are aligned. Guide Guides separate each instrument bay.

  • Page 45: Powering The Standard

    Access Window This opening provides access to BAT switches and MONITOR/EXT BAT IN or EXT BAT OUT connectors on installed 732B or 732B-7001 units. AC Line Input IEC-type line cord male connector. All fusing is done in the individual installed 732B units.

  • Page 46: Setting The Bat Switch

    2. When you want to ship the unit cold (without battery power). For information about how to set the BAT switch on the 732B when you are using an external dc source such as the 732B-7001, refer to "Powering the Standard from a 732B- 7001."...

  • Page 47: Replacing The Internal Battery

    7. Set the 732B BAT switch to l to connect the batteries in parallel. 8. After the ac line power to both the 732V and the 732B-7001 is turned of, the 732B can be powered by battery for at least 130 hours.

  • Page 48: Connecting Cables To The Output

    You can use banana plugs, spade lugs, or bare wire to attach cables to the binding posts. The best choice is shielded cables with low-thermal emf connectors such as Fluke Model 5440-7002 Low Thermal Cables. See "Thermal EMFs" further on in this section for more information.

  • Page 49: Connecting The Guard And Ground

    Note Spurious currents in the COM (common) wires will degrade measurements at the accuracy level of the 732B. Make sure the GUARD terminals of all interconnected instruments are tied to earth ground at one point and one point only in the system, and all LO or COM terminals are tied to GUARD at only one point in the system.

  • Page 50: Monitoring Oven Temperature

    Resetting the IN CAL Indicator 3-17. If the IN CAL indicator is off, the 732B may not meet its specifications listed in Section 1. The indicator goes off if power to the battery voltage has dropped too low, or if the oven temperature has gone too high or too low.

  • Page 51: Monitoring Long-Term Stability

    Output voltage drift, with respect to the legal volt, may be positive or negative and is a characteristic of the individual 732B. Accumulated test data have shown that, once established, the measured drift is generally linear, provided the instrument continues to receive uninterrupted operating power.

  • Page 52: Minimizing Error Sources

    Minimizing Error Sources 3-20. You can inadvertently defeat the low uncertainty of the 732B output if you do not pay proper care to avoidable error sources. Errors can occur from the effects of thermal emfs, lead and connection resistance, and other sources.
  • Page 53 Operation Minimizing Error Sources Ω 732B DC STANDARD CABLE RESISTANCE AC PWR IN CAL CHARGE LOW BAT 10 mA – 1 mV + 10V OUTPUT 1.018V CHASSIS Ω LOAD 10V COM 1.018V COM GUARD – 1 mV + SERIAL NUMBER Ω...
  • Page 54 732B/734A Instruction Manual 3-20 www.valuetronics.com...

  • Page 55: Theory Of Operation

    Introduction .................... 4-3 4-2. Overall Functional Description .............. 4-3 4-3. Model 734A Functional Description ..........4-5 4-4. Model 732B-7001 External Battery/Power Supply ......4-5 4-5. 732B Circuit Description ............... 4-5 4-6. 10V Reference Circuit ............... 4-5 4-7. Generating the 1.018V Output............4-7 4-8.
  • Page 56 732B/734A Instruction Manual www.valuetronics.com...

  • Page 57: Introduction

    Overall Functional Description 4-2. Model 732B is a highly stable 10V, 12 mA dc power supply to be used as a standards laboratory primary dc voltage reference. Refer to Figure 4-1 for an overall block diagram.
  • Page 58 732B/734A Instruction Manual k16f.eps Figure 4-1. 732B Overall Block Diagram www.valuetronics.com...

  • Page 59: Model 734A Functional Description

    Figure 3-8 in Section 3. 732B Circuit Description 4-5. Circuits in the 732B are described to the component level in the rest of Section 2 in the following order: 1. 10V Reference Circuit 2. A4 Oven Assembly 3.
  • Page 60 732B/734A Instruction Manual k17f.eps Figure 4-2. 10V Reference Circuit Block Diagram www.valuetronics.com...

  • Page 61: Generating The 1.018V Output

    Theory of Operation 732B Circuit Description The next major component that is used to generate 10V is the 10V resistor string. This string (R401 and R402) is located on the Oven assembly. These are the feedback elements that set the gain to multiply the reference voltage up to 10V. In its simplest...

  • Page 62: Buffering Of The 10V Output

    732B/734A Instruction Manual The first circuit (U3A, R2, R3, VR2, and Z1-R10 on the reference hybrid) supplies current to the 10V high side of the 10V beta string resistors. The second circuit (U2B, R8, R9, and Z1-R8 Z1-R9) sinks current from the 10V low side of the 10V beta string resistors and Reference Amplifier collector current.

  • Page 63: Power Supplies And Battery Charger Assembly A5

    The LED Circuitry includes the LEDs and the drive circuitry for the following front panel indicators: • AC PWR: When lit, this indicates that ac line power is applied to the 732B. • CHARGE: When lit, this indicates that the battery charger is in the constant current mode (high level charging) as opposed to the float charge mode.
  • Page 64 732B/734A Instruction Manual k18f.eps Figure 4-3. A5 Power Supply/Battery Charger Block Diagram 4-10 www.valuetronics.com...

  • Page 65: Raw Dc Power Supply

    Battery Charger 4-16. The battery charger for the 732B is a dual mode charger. The charger operates as a constant current source for a fast charge until the battery is approximately 90% charged. Then the charger circuitry switches to a voltage source for the remainder of the charge and for a float charge.

  • Page 66: +11 . 5V Low-Dropout Regulator

    IN CAL Logic 4-20. The 732B has an indicator on the front panel for IN CAL. This indicates that the oven temperature has remained between 35 and 55°C and that the voltage measured at the battery has not been reduced below 11.2V dc. If the oven temperature is between 35 and 55°C, pressing the rear panel CAL RESET switch resets (lights) the IN CAL indicator.

  • Page 67: Ac Power To Battery Power Switching Circuitry

    AC Power to Battery Power Switching Circuitry 4-22. If the rear panel BAT switch is set to l, and ac line power is removed from the 732B, the battery is connected to the Low-Dropout Regulator to provide uninterrupted power for the +11.5V supply.

  • Page 68: Low-Battery Shutdown Circuitry

    732B/734A Instruction Manual Low-Battery Shutdown Circuitry 4-25. Sealed lead-acid batteries such as are used in this instrument are very susceptible to damage and/or decreased capacity if subjected to deep discharge. To prevent this from occurring, battery power is turned off when the voltage decreases to the level that coincides with loss of IN CAL.
  • Page 69 A Message From Fluke Corporation Some semiconductors and custom IC's can be damaged by electrostatic discharge during handling. This notice explains how you can minimize the chances of destroying such devices 1. Knowing that there is a problem.
  • Page 70 8. WHEN REMOVING PLUG-IN ASSEMBLIES 5. USE STATIC SHIELDING CONTAINERS FOR HANDLE ONLY BY NON-CONDUCTIVE HANDLING AND TRANSPORT. EDGES AND NEVER TOUCH OPEN EDGE CONNECTOR EXCEPT AT STATIC-FREE WORK STATION. PLACING SHORTING STRIPS ON EDGE CONNECTOR HELPS PROTECT INSTALLED S.S. DEVICES. 6.

  • Page 71: Maintenance

    Chapter 5 Maintenance Title Page 5-1. Introduction .................... 5-3 5-2. Service Information................5-3 5-3. Replacing the Fuse ................. 5-3 5-4. Cleaning the External Surfaces .............. 5-3 5-5. Calibration....................5-3 5-6. Preparing for Calibration ..............5-4 5-7. Preparing for 10V Calibration with Adjustment........ 5-4 5-8.
  • Page 72 732B/734A Instruction Manual www.valuetronics.com...

  • Page 73: Introduction

    Service Information 5-2. The 732B is warranted for a period of 1 year on delivery to the original purchaser. The Warranty is located on the reverse side of the title page at the front of this manual. Factory authorized calibration and service for Fluke products is offered at various worldwide locations.

  • Page 74: Preparing For Calibration

    732B, called the Unit Under Test (UUT), and a certified 732B or 732A to calibrate the 10V output. In the first procedure, you do not adjust the 732B under test. In the second procedure, you adjust the 10V output of the 732B under test so that it is equal to the reference standard.
  • Page 75 BAT CHG LINE OPR 1. UUT 10V HI TO 845AB INPUT – 2. REF 732B 10V HI TO 845AB COMMON 3. UUT 10V LO TO REF 732B LO 4. CHASSIS TO GUARD AND TO 10V ZERO COM @ REF 732B 5.

  • Page 76: Calibration With Adjustment

    Complete the following procedure to standardize the output of the 732B to a Certified 732B. Verify that for the UUT, the 24-hour warmup period on ac line power has been met. Always set the null detector to ZERO when changing leads.

  • Page 77: Maintenance Calibration

    Maintenance Calibration 7 3 2 T A N IN C 1 0 V 1 .0 1 8 V S IS 1 0 V R IA 1 .0 1 8 V k20f.eps Figure 5-2. Location of 732B Calibration Adjustment Switches www.valuetronics.com...

  • Page 78: Calibration Without Adjustment

    9. Reverse the HI and LO (positive and negative) leads on the UUT and certified 732B. 10. Set the OPR switch on the null detector to the OPR position and observe the reading.

  • Page 79: Access Procedures

    6. Subtract the reading in step 5 from the reading in step 3 and divide this difference by 7. To determine the 10V value of the 732B UUT, add the value in step 6 to the 10V value of the reference.
  • Page 80 732B/734A Instruction Manual k21f.eps Figure 5-3. Accessing Internal Components 5-10 www.valuetronics.com...
  • Page 81 Maintenance Access Procedures Warning Wear eye protection. Use extreme care not to short the battery terminals. The battery may explode if shorted. 1. Leave the ac power on to maintain calibration. Remove any cables connected to the MONITOR/EXT BAT IN connector. 2.
  • Page 82 732B/734A Instruction Manual CAUTION TO AVOID LOSS OF CALIBRATION, LEAVE AC LINE CORD PLUGGED IN. DISCONNECT BATTERY CABLE (4 POSITION 2 WIRES) DISCONNECT RED WIRE (BATTERY TERMINAL) KEY STUDS (2 PLACES) 7 3 2 T A N BATTERY BRACKET IN C...

  • Page 83: Replacing The Oven Assembly

    4. Remove the four screws (two on each side) that fasten the oven to the front panel bezel. 5. Remove the oven assembly. Refer to the parts list illustration for the 732B Final Assembly for further breakdown information. 6. Reverse the steps to install a new oven assembly.

  • Page 84: Troubleshooting

    Troubleshooting 5-16. When a problem occurs with the 732B, first verify that the battery is good and that the line power fuse is intact. Then you need to determine if the problem is in the 10V reference circuitry or the A5 Battery Charger/Power Supply assembly.

  • Page 85: Transformer/Rectifier/Filter

    Maintenance Troubleshooting Transformer/Rectifier/Filter 5-19. The transformer/rectifier/filter functional group is composed of the transformer assembly, the overvoltage detect circuit, the rectifier bridge, and the capacitive filter. The transformer provides a secondary voltage of 25V rms, or about 30V pk. The best way to troubleshoot this section is to use an oscilloscope at TP501 and at the secondary input connector J501.

  • Page 86: +11 . 5V Dc Regulator

    732B/734A Instruction Manual +11 . 5V DC Regulator 5-22. The input and output of the +11.5V dc regulator circuit can be easily checked at TP507 and TP508. The input should be nominally 14.87V dc. The normal range is 14.52 to 15.20V dc.

  • Page 87: List Of Replaceable Parts

    Chapter 6 List of Replaceable Parts Title Page 6-1. Introduction .................... 6-3 6-2. How to Obtain Parts ................6-3 6-3. Manual Status Information..............6-3 6-4. Newer Instruments ................. 6-3 6-5. Service Centers..................6-4 www.valuetronics.com...
  • Page 88 732B/734A Instruction Manual www.valuetronics.com...

  • Page 89: Introduction

    Introduction 6-1. This section contains an illustrated list of replaceable parts for the 734A, and 732B. Parts are listed by assembly; alphabetized by reference designator. Each assembly is accompanied by an illustration showing the location of each part and its reference designator.

  • Page 90: Service Centers

    732B/734A Instruction Manual Service Centers 6-5. To locate an authorized service center or to contact Fluke, call one of the following telephone numbers: USA and Canada: 1-800-44-FLUKE (1-800-443-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65- -276-6196 Anywhere in the world: +1-425-356-5500 Or, visit Fluke’s Web site at www.fluke.com.
  • Page 91 List of Replaceable Parts Parts Table 6-1. 734A DC Reference Standard Reference Fluke Stock Description Tot Qty Notes Designator A732 732B DC STANDARD 869297 FUSE,.25X1.25,0.187A,250V,SLOW 501098 H500 SCREW,PH,P,LOCK,STL,6-32,.250 152140 H515 SCREW,FHU,P,LOCK,SS,6-32,.250 320093 H540 SCREW,CAP,SCKT,SS,8-32,.375 295105 H565 SCREW,KNURL,SL,CAPT,SS,10-32,1,750 912436 H570 RIVET,BUTTON,NYL,.125,.330...
  • Page 92 732B/734A Instruction Manual k23f.eps Figure 6-1. 734A DC Reference Standard www.valuetronics.com...
  • Page 93 List of Replaceable Parts Parts 734A-5001 (1 of 2) k24f.eps Figure 6-1. 734A DC Reference Standard (cont) www.valuetronics.com...
  • Page 94 732B/734A Instruction Manual H515 (3 PL) MP513 MP528 MP531 MP533 MP540 (2 PL) MP524 (2 PL) W503 MP531 H515 (3 PL) MP530 MP528 MP540 MP500 (2 PL) (4 PL) H540 (3 PL) MP515 MP514 H500 H515 MP516 H540 (3 PL)
  • Page 95 List of Replaceable Parts Parts Table 6-2. 732B DC Standard Reference Fluke Stock Description Tot Qty Notes Designator FRONT PANEL PCA 869169 POWER SUPPLY PCA 869185 BT401 BATTERY,LEAD-ACID,12V,6.5AH 887042 FUSE,.25X1.25,0.187A,250V,SLOW 501098 E001 TERM,RING,#6,26-22AWG,CRIMP,GOLD 832667 H112 WASHER,LOCK,INTRNL,STL,.512ID 641381 H146 WASHER,FLAT,BRASS,#8,0.032 THK...
  • Page 96 732B/734A Instruction Manual Table 6-2. 732B DC Standard (cont) Reference Fluke Stock Description Tot Qty Notes Designator MP502 HANDLE ARM/REAR FOOT 871868 MP506 TOP COVER, PAINTED 871962 MP508 HANDLE, PAINTED 871959 MP509 DECAL, CSA 864470 MP602 INSUL PT,DIODE,POLYIMIDE,.130,,375 887307 MP636 FOOT,RUBBER,ADHES,BLK,.50 SQ,.23 THK...
  • Page 97 List of Replaceable Parts Parts 732B-5001 (1 OF 5) k26f.eps Figure 6-2. 732B DC Standard 6-11 www.valuetronics.com...
  • Page 98 732B/734A Instruction Manual MP144 MP144 MP151 H312 MP103 H312 (REF) MP104 MP143 (REF) H312 MP104 732B-5001 (2 OF 5) k27f.eps Figure 6-2. 732B DC Standard (cont) 6-12 www.valuetronics.com...
  • Page 99 List of Replaceable Parts Parts 732B-5001 (3 of 5) k28f.eps Figure 6-2. 732B DC Standard (cont) 6-13 www.valuetronics.com...
  • Page 100 H312 (2 PL) U500 (2 PL) MP602 (2 PL) H312 W640 (2 PL) H312 (2 PL) MP402 BT401 MP405 MP636 USE FIXTURE (4 PL) TO PLACE FEET 732B-5001 (4 of 5) k29f.eps Figure 6-2. 732B DC Standard (cont) 6-14 www.valuetronics.com...
  • Page 101 List of Replaceable Parts Parts 732B-50001 (5 of 5) k30f.eps Figure 6-2. 732B DC Standard (cont) 6-15 www.valuetronics.com...
  • Page 102 732B/734A Instruction Manual Table 6-3. A1 Front Panel PCA Reference Fluke Stock Description Tot Qty Notes Designator C100 CAP,POLYES,0.1UF,+-10%,50V 649913 C101 CAP,TA,1UF,+-20%,35V 697417 C102 CAP,POLYES,0.2UF,+-10%,50V 706028 CR100-103 LED,RED,T1,2.0 MCD 875666 CR104 DIODE,SI,100 PIV,5.0 AMP 483701 CR105 DIODE,SI,BV=125V,IO=150MA,500MW 272252 E100 SURGE PROTECTOR,230V,+-15%...
  • Page 103 List of Replaceable Parts Parts 732B-1601 k31f.eps Figure 6-3. A1 Front Panel PCA 6-17 www.valuetronics.com...
  • Page 104 732B/734A Instruction Manual Table 6-4. A5 Power Supply PCA Reference Fluke Stock Description Tot Qty Notes Designator C500,C501 CAP,POLYES,1UF,+-10%,50V 733089 C502 CAP,AL,2200UF,+-20%,50V,SOLV PROOF 876826 C503,C505, CAP,POLYES,0.22UF,+-10%,50V 706028 C506,C509, 706028 C513,C517, 706028 C520,C522, 706028 C523,C528, 706028 C537-539 706028 C504,C514 CAP,TA,10UF,+-20%,50V 800516...
  • Page 105 List of Replaceable Parts Parts Table 6-4. A5 Power Supply PCA (cont) Reference Fluke Stock Description Tot Qty Notes Designator Q508 TRANSISTOR,SIN-MOS,0.10 OHM,TO-220 944111 R500 RES,MF,200,+-1%,0.125W,100PPM 245340 R501 RES,CERM,560,+-5%,3W,100PPM 643764 R502,R503 RES,MF,10.7,+-1%,0.5W,100PPM 168740 R504 RES,MF,143,+-1%,0.125W,100PPM 192906 R505,R531 RES,MF,121,+-1%,0.125W,100PPM 343160 R506 RES,MF,1.33K,+-1%,0.125W,100PPM...
  • Page 106 732B/734A Instruction Manual Table 6-4. A5 Power Supply PCA (cont) Reference Fluke Stock Description Tot Qty Notes Designator SW501 SWITCH,PUSH-BTN,SPDT,MOMENTARY,RT ANG 743252 SW502 SWITCH,SLIDE,SPDT 453365 TP1,2,501 502, JUMPER,WIRE,NONINSUL,0.200CTR 816090 504, 507-509, 816090 512,513 816090 U500,U504 IC,VOLT REG,ADJ,POS,LOW DROPOUT 876537 U501,U507...
  • Page 107 List of Replaceable Parts Parts 732B-1605 k32f.eps Figure 6-4. A5 Power Supply PCA 6-21 www.valuetronics.com...
  • Page 108 732B/734A Instruction Manual 6-22 www.valuetronics.com...

  • Page 109: Schematic Diagrams

    Chapter 7 Schematic Diagrams Title Page A1 Front Panel PCA.................... 7-3 A2 Flex Circuit PCA ................... 7-5 A3 BCD Switch PCA ..................7-6 A4 Oven Control PCA..................7-7 A5 Power Supply PCA..................7-8 www.valuetronics.com...
  • Page 110 732B/734A Instruction Manual www.valuetronics.com...
  • Page 111 Schematic Diagrams 732B-1601 k33f.eps Figure 7-1. A1 Front Panel PCA www.valuetronics.com...
  • Page 112 732B Instruction Manual CONNECTS TO 10V HI BINDING POST VR101 PIV 5A CR104 11V TRANS SUPRESS NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS. ALL CAPACITOR VALUES ARE IN MICROFARADS. CONNECTS TO 10V LO BINDING POST E100 NOTE: OTHER SIDE CONNECTED TO CHASSIS OFF ASSEMBLY.
  • Page 113 BIT 5 10V ADJ LO BIT 6 BIT 7 TO A3 BCD SWITCH PCA 1.018V LO BIT 8 BIT 9 BIT 10 BIT 11 BIT 12 BIT 13 732B-1002 10V ADJ HI k35f.eps Figure 7-2. A2 Flex Circuit PCA www.valuetronics.com...
  • Page 114 732B Instruction Manual P304 10V ADJ HI R301 R305 R304 R303 R302 604K 1.5M 750K S W 3 0 4 BIT 5 R306 5.1M BIT 6 BIT 7 1 PPM S W 3 0 3 BIT 8 BIT 9 BIT 10...
  • Page 115 3 0 0 K BIT_6 150k BIT_7 7 5 K BIT_8 BIT_9 3 0 K BIT_10 Z401 BIT_11 7 3 4 A - 4 R 0 3 7.5K BIT_12 BIT_13 10V_ADJ_LO 732B-1004 TO A3 PCA k37f.eps Figure 7-4. A4 Oven Control PCA www.valuetronics.com...
  • Page 116 732B Instruction Manual 732B-1605 k38f.eps Figure 7-5. A5 Power Supply PCA www.valuetronics.com...
  • Page 117 Q 5 0 8 R 5 6 6 R507,R508,R509,R510,R511,R512,R513,R516,R522, Q 5 0 5 R524,R526,R527,R528,R530,R555,R557 VN0104N3 RT503 S W 5 0 2 TP513 TP503,TP505,TP506,TP510,TP511 U516 U502,U503,U508,U510,U512 V R 50 9 VR505,VR506,VR507 732B-1005 (1 of 3) k39f.eps Figure 7-5. A5 Power Supply PCA (cont) www.valuetronics.com...
  • Page 118 732B Instruction Manual 732B-1005 (2 of 3) k40f.eps 7-5. A5 Power Supply PCA (cont) 7-10 www.valuetronics.com...
  • Page 119 R F P 7 0 N 0 3 R 5 6 5 100K R 5 6 2 B A T T - N E G (FROM SH 1) 4.7K U516 U516 CD4013BE CD4013BE 732b-1005 (3 of 3) k41f.eps 7-5. A5 Power Supply PCA (cont) 7-11 www.valuetronics.com...
  • Page 120 732B Instruction Manual 7-12 www.valuetronics.com...
  • Page 121 732B DC Standard Front Panel Features Features (Figure), 3-10 (Figure), 3-4 734A-7001 Instrument Enclosure Front Panel 732B DC Standard Front Panel Features (Table), Features (Table), 3-10 734A-7001 Instrument Enclosure Rear Panel, 3-3 732B DC Standard Rear Panel, 3-3 734A-7001 Instrument Enclosure Rear Panel...
  • Page 122 Initial Access Procedure, 5-9 AC Line Cords Available for Fluke Instruments Inspection, 2-3 (Table), 2-3 Installing a 732B or 732B-7001 in a 734A-7001 AC Power to Battery Power Switching Circuitry, Instrument Enclosure, 2-5 4-13 Installing a 732B or 732B-7001 in a 734A-7001...
  • Page 123 Power Supplies and Battery Charger Assembly Summary of the Features, 3-3 A5, 4-9 Powering the Standard, 3-11 —T— Powering the Standard from a 732B-7001, 3-12 Theory of Operation, 4-3 Preparing for 10V Calibration with Adjustment, Thermal EMFs, 3-18 Thermistor, Oven, 3-16...
  • Page 124 732B/734A Instruction Manual www.valuetronics.com...

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734a