Fluke 8060A Instruction Manual
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Fluke 8060A Instruction Manual

True-rms multimeter
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This manual pertains to instruments with serial number 6820XXX
or higher.
PN 609146
May 1997 Rev.3, 11/00
© 1997,1998,1999, 2000 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
8060A
-rms Multimeter
True

Instruction Manual

®

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Summary of Contents for Fluke 8060A

  • Page 1: Instruction Manual

    This manual pertains to instruments with serial number 6820XXX or higher. 8060A -rms Multimeter True Instruction Manual PN 609146 May 1997 Rev.3, 11/00 © 1997,1998,1999, 2000 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies.
  • Page 2 Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.

  • Page 3: Safety Information

    Safety Information This meter has been designed and tested in accordance with IEC Publication 348. To ensure that the meter is used safely, follow all safety and operating instructions in this manual. If the meter is not used as described in this manual, the safety features of the meter might be impaired.

  • Page 5: Table Of Contents

    Table of Contents Chapter Title Page Introduction and Specifications..........1-1 1-1. Introduction................1-3 1-2. Items Furnished with Equipment ..........1-4 1-3. Specifications................1-4 Operating Instructions ............2-1 2-1. Introduction................2-3 2-2. Unpacking Your Instrument ............ 2-3 2-3. Battery Installation or Replacement......... 2-3 2-4.
  • Page 6 8060A Instruction Manual Applications ................3-1 3-1. Introduction ................3-3 3-2. Determining Amplifier Bandwidth........... 3-3 3-3. Using the 8060A as a Q-Meter ..........3-4 3-4. Measuring Amplifier Stage Gain with Relative dB....3-5 3-5. General Audio Uses..............3-6 3-6. Using the 8060A to Measure Extremely Low Currents ... 3-7 3-7.
  • Page 7 Contents (continued) 5-23. Self-Tests ................5-21 5-24. Ratio Self-Test ..............5-21 5-25. Switch Decoding Self-Test ..........5-22 5-26. Troubleshooting Guide ............5-23 List of Replaceable Parts............6-1 6-1. Introduction................6-3 6-2. How to Obtain Parts..............6-3 6-3. Manual Status Information ............6-4 6-4.
  • Page 8 8060A Instruction Manual...
  • Page 9 List of Tables Table Title Page 1-1. 8060A Specifications............... 1-5 2-1. Controls, Indicators and Connectors........2-7 2-2. Input Overload Limits.............. 2-10 2-3. Resistance Function Autoranges and Resolution..... 2-20 2-4. Frequency Function Autoranges and Resolution..... 2-30 2-5. Sensitivity for the Frequency Function........2-31 2-6.
  • Page 10 8060A Instruction Manual...
  • Page 11 List of Figures Figure Title Page 2-1. Removal of Battery Compartment Cover ........ 2-4 2-2. Battery Removal and Fuses ............. 2-4 2-3. Controls, Indicators and Connectors........2-6 2-4. 8060A Display ................. 2-8 2-5. Overrange Indicator ..............2-9 2-6. Voltage Operation..............2-11 2-7.
  • Page 12 8060A Instruction Manual 6-2. A1 Main PCB Assembly ............6-12 6-3. A3 Rms PCB Assembly ............6-14 7-1. A1 Main PCB Component Locations ........7-3 7-2. Test Point Locations ..............7-4 7-3. A/D Measurement Cycle ............7-5 7-4. Switch Detail ................7-6 7-5.

  • Page 13: Introduction And Specifications

    Chapter 1 Introduction and Specifications Contents Page 1-1. Introduction ..............1-3 1-2. Items Furnished with Equipment........1-4 1-3. Specifications ..............1-4...
  • Page 14 8060A Instruction Manual...

  • Page 15: Introduction

    Introduction and Specifications Introduction 1-1. Introduction Your Fluke Model 8060A is a handheld, microcomputer-based 4½ digit multimeter that is ideally suited for use in the field, laboratory, shop, or home. The 8060A has all the features that have become accepted standards for quality handheld multimeters, as well as some new features that have not been offered before in a handheld multimeter.

  • Page 16: Items Furnished With Equipment

    8060A Instruction Manual Power: 170 hours of continuous operation can be expected from a 9V alkaline battery (NEDA 1604). Low battery voltage is automatically detected and displayed. The low battery indication, BT, appears on the display when about 20% of the battery life remains.
  • Page 17 Introduction and Specifications Specifications Table 1-1. 8060A Specifications Electrical The following specifications are based on a one-year calibration cycle, an operating temperature of 18 to 28°C (64 to 82°F) and a relative humidity not exceeding 80%. DC Voltage Accuracy Range Resolution ±(% of reading + no.
  • Page 18 8060A Instruction Manual Table 1-1. 8060A Specifications (cont) DC Voltage, dB Mode Measurements are made in dBm referenced to 600 or relative dB. All specifications are the same as for dc voltage except the following: Dynamic Range......With full .01 dB resolution, 99.79 dB.
  • Page 19 Introduction and Specifications Specifications Table 1-1. 8060A Specifications (cont) AC Voltage (True rms, AC-Coupled) Ranges ....200 mV, 2V, 20V, 200V, 750V Accuracy * ..... (% of reading + no. of digits). See table below: Input Reso- Range 20 Hz - 45 Hz - 1 kHz - 10 kHz -...
  • Page 20 8060A Instruction Manual Table 1-1. 8060A Specifications (cont) AC Voltage, dB Mode (True rms, AC-Coupled) Measurements are made in dBm referenced to 600 or relative dB. All specifications are the same as for ac voltage except the following: Dynamic Range ... With full .01 dB resolution, 97.30 dBm. Total specified dynamic range is 109.72 dBm (2.45 mV to 750.0V ac rms).
  • Page 21 Introduction and Specifications Specifications Table 1-1. 8060A Specifications (cont) AC Voltage, dB Mode (cont.) 100 mV (relative 25 mV to 200 Hz reading) Frequency Typical Response in 200 mV Range Frequency Frequency Range Accuracy Resolution (Fully Autoranging) (% of reading + no. of digits) 200 Hz .01 Hz 2000 Hz...
  • Page 22 8060A Instruction Manual Table 1-1. 8060A Specifications (cont) Frequency (cont.) Maximum Useable AC AC Voltage Range Voltage* 200 MV 5V peak 50V peak 500V peak 200V 1000V peak 750V 1000V peak *Signal not to exceed a volt-hertz product of 1 x 10 Input Characteristics ..
  • Page 23 Introduction and Specifications Specifications Table 1-1. 8060A Specifications (cont) Resistance (cont.) Full- Open Reso- Range Accuracy Circuit scale lution Current Voltage Voltage 0.01 (0.07%+2+.02 ) <1.1 mA <4.8V (0.07%+2) <250 mV <150 A 20 k (0.07%+2) <15 A <1.5V 200 k (0.07%+2) <1.5 A 0-1.9999 M...
  • Page 24 8060A Instruction Manual Table 1-1. 8060A Specifications (cont) Continuity Ranges......All resistance ranges Threshold ...... Nominally 10% of range (for example, 20 in the 200 range) for 200 , 2 k , 20 k , 200 k ranges. Nominally 20 k in M range.
  • Page 25 Introduction and Specifications Specifications Table 1-1. 8060A Specifications (cont) AC Current (True rms Responding, AC-Coupled Accuracy * ....... (% of reading + no. of digits). See table below: Input 20 Hz - 45 Hz - 3 kHz - 10 kHz - Resolution Range Current...
  • Page 26 8060A Instruction Manual Table 1-1. 8060A Specifications (cont) General Maximum Common Mode Voltage....500V dc or ac rms Display Update Rate ... 2.5 readings/second for all functions except frequency and dB. For frequency, 1 reading/second. For dB, 1.4 readings/second. Electromagnetic In an RF field of 1 V/m on all ranges Compatibility ....
  • Page 27 Introduction and Specifications Specifications Table 1-1. 8060A Specifications (cont) General (cont) Environmental Operating Temperature ..0 to 50°C Storage Temperature ..-35 to + 60°C Accuracy Temperature 0.1 x the applicable accuracy Coefficient......specification per °C (plus the initial 23°C specification) for 0 to 18°C and 28 to 50°C.
  • Page 28 8060A Instruction Manual 1-16...

  • Page 29: Operating Instructions

    Chapter 2 Operating Instructions Contents Page 2-1. Introduction ..............2-3 2-2. Unpacking Your Instrument ..........2-3 2-3. Battery Installation or Replacement ........ 2-3 2-4. Fuse Replacement............2-5 2-5. Physical Features ............. 2-6 2-6. Front Panel..............2-6 2-7. Display ................. 2-8 2-8.
  • Page 30 8060A Instruction Manual...

  • Page 31: Introduction

    Operating Instructions Introduction 2-1. Introduction This chapter describes how to make measurements with your 8060A. Even though you may have used a multimeter before, we suggest that you take the time to read this material carefully so that you can take full advantage of the wide variety of measurement functions offered by the 8060A.

  • Page 32: Removal Of Battery Compartment Cover

    8060A Instruction Manual Set the 8060A power switch to OFF. Remove test leads from external connections and from the 8060A input terminals. Turn the instrument over and remove screw from battery cover as shown in Figure 2-1. Use your thumbs to push off the battery cover as shown in Figure 2-1. Slide the battery out of the compartment as shown in Figure 2-2.

  • Page 33: Fuse Replacement

    Replace F1 with the appropriate 2A/250V fuse; American-style: fast-acting, type AGX2, 1/4 x 1”, Fluke PN 376582; European-style: 5 x 20 mm, Fluke PN 460972. Do not use makeshift fuses or short-circuit the fuseholder.

  • Page 34: Physical Features

    8060A Instruction Manual 2-5. Physical Features Before you begin using your 8060A, we suggest you take a few minutes to familiarize yourself with the instrument. All of the externally accessible features are shown in Figure 2-3 and described in Table 2-1. The front panel and the display are also described in the following paragraphs.
  • Page 35 Operating Instructions Physical Features Table 2-1. Controls, Indicators and Connectors Item Name Function Battery Eliminator External input power connector for use with Connector the A81 Battery Eliminator accessory. Function Buttons: Push buttons that toggle on or toggle off the Hz, dB, ‘secondary functions: frequency, dB, visible or audible continuity, or relative.

  • Page 36: Display

    8060A Instruction Manual Table 2-1. Controls, Indicators and Connectors (cont) Item Name Function Tilt Bail A fold-out stand. The bail may also be removed (press on one of the legs at the hinge of the bail) and reinserted from the top as a hook for hanging the instrument.

  • Page 37: Signal Input Limits

    Operating Instructions Signal Input Limits If you are taking a measurement and the OL symbol appears on the display (Figure 2-5), an overrange condition is indicated, meaning that the input is higher than the range selected. You should select a higher range for the measurement.

  • Page 38: Operation

    8060A Instruction Manual Table 2-2. Input Overload Limits Function Input Terminals Maximum Input Limit AC Voltage, AC dB, V S and COMMON 750V rms or 1000V peak Frequency continuous except 20 seconds maximum on the 200 mV range above 300V dc or ac rms.

  • Page 39: Ac/Dc Voltage (V)

    Operating Instructions Operation If the LCD segments do not all turn on during the self-test, or if the instrument does not clear the display after the test and then respond to switch selections, something is probably wrong with the instrument. Try the test again, and if it fails, have a qualified person refer to Chapter 5.

  • Page 40: True Rms Measurement

    8060A Instruction Manual 2-12. True rms Measurement One of the most useful features of the 8060A is the direct measurement of the True rms or effective ac voltages and ac currents. Mathematically, rms is defined as the square root of the sum of the squares of the ac and dc components.

  • Page 41: Waveform Comparison And Conversion

    Operating Instructions Operation AC Component DC Component (ac rms component) + (dc component) RMS Total = dx09f.eps Figure 2-7. AC and DC Waveform Components 2-14. Waveform Comparison and Conversion Figure 2-8 shows the relationship between common waveforms and the display readings for the 8060A and average-responding meters. Figure 2-8 also illustrates the relationship between ac and dc measurements for ac- coupled meters.

  • Page 42: High Impedance Dc Voltage

    8060A Instruction Manual AC Coupled Peak Voltages Display Readings DC and AC Input AC Component Only Total rms TRUE RMS = Waveform PK - PK 0 - PK Component ac + dc rms CAL* 8062A only Sine 2.828 1.414 1.000 1.000 0.000 1.000...
  • Page 43 Operating Instructions Operation Figure 2-9 describes how to select the high input impedance dc voltage function (the ac voltage function does not operate in this mode). Notice that all of the function switches must be out to select this function. Either the 2V or the 200 mV range may be selected.

  • Page 44: Ac/Dc Current (A)

    8060A Instruction Manual 2-16. AC/DC Current (A) Selection of the ac or dc current (A) function is described is Figure 2-10. The 8060A offers five ac (true rms ac-coupled) and five dc current ranges: 200 A, 2 mA, 20 mA, 200 mA, 2000 mA. Each range is protected by a 2A/250V fuse in series with a 3A/600V fuse.

  • Page 45: Calculating Burden Voltage Error

    Operating Instructions Operation Ammeter Shunt Es = Source Voltage RI = Load resistance + Source resistance Im = Measured current (display reading in amps) Eb = Burden voltage (calculated) Eb = meas. current [(200/current range in mA) + .35] Error: Error in % = 100 x Eb/(Es - Eb) Error in A = (Eb x Im)/(Es - Eb) Example:...

  • Page 46: Resistance ( )

    8060A Instruction Manual 2-17. Resistance ( ) Selection of the resistance function is described in Figure 2-12. There are four fixed ranges (200 , 2 k , 20 k , 200 k ) plus the autoranging M range consisting of three ranges: 2 M , 20 M , and 300 M . In all fixed resistance ranges (200 to 200 k ), the test voltage is less than that required to turn on most semiconductor junctions.

  • Page 47: Autoranging Megohms

    Operating Instructions Operation Resistance measurements for all ranges are made using a two-wire ratiometric technique. This means that test lead resistance may affect the accuracy in the 200 range. You can correct this error by shorting the test leads together, reading the test lead resistance, and then subtracting it from resistance readings.

  • Page 48: Autoranging Kilohms

    8060A Instruction Manual 2-19. Autoranging Kilohms Although it is not indicated on the front panel, there is an additional autoranging range available: the autoranging k range, which consists of 2 k , 20 k , and 300 k . To select this range, you must simultaneously press the M and the 200 switches as shown in Figure 2-13.

  • Page 49: Conductance (S)

    Operating Instructions Operation 2-20. Conductance (S) Selection of the conductance function is described in Figure 2-14. The range is 2000 nS (nS = nanosiemens or 10 siemens, 1 siemen = 1/ ) which corresponds to a resistance range from 500 k to 10,000 M . Conductance is a good way to measure high resistances, such as leakages in diodes, capacitors, pcbs, or insulators.
  • Page 50 8060A Instruction Manual *nS-to-M 2000 nS Range (1000/nS = M ) 2000 1000 1000 2000 5000 10,000 Conversion Scales *S = Siemens = 1/ = International Unit of conductance formerly known as the MHO. Example: 250 nS = 4 M dx16f.eps Figure 2-15.

  • Page 51: Diode Test ( )

    Operating Instructions Operation Diode Test ( 1. Press both switches simultaneously 2. Set switch to select Low (-) diode test High (+) 3. Ensure all other switches are out (except the AC/DC switch which can be in or out). 4. Connect the test leads as shown. 5.
  • Page 52 8060A Instruction Manual A quick way to check for shorted or open junctions is to reverse the test leads. If the junction indicates the same in-scale reading both directions, it is probably shorted. If the junction indicates an overrange both directions, it is open.

  • Page 53: Relative (Rel)

    Operating Instructions Operation 2-22. Relative (REL) The relative function allows you to store any reading as an offset or relative reference value. When you press the REL button, the REL indicator appears in the upper right corner of the display, and the 8060A stores the next measurement in a register along with the function and range.
  • Page 54 8060A Instruction Manual Remember that even though the REL indicator appears on the display almost instantaneously after the REL button is pressed, the relative reference is not stored until the next measurement takes place. For most functions, the time between measurements is about 0.4 seconds (frequency measurements occur every second, and dB measurements occur about every 1.4 seconds).

  • Page 55: Frequency (Hz)

    Operating Instructions Operation Frequency (Hz) Frequency Button Low (-) High (+) 1. Select the ac voltage function by setting two switches in. 2. Connect the test leads as shown. 3. Heed the input overload limits for ac voltage (Table 2-2) and connect the test leads to he circuit being measured.
  • Page 56 8060A Instruction Manual The frequency function is fully autoranging over four ranges: 200 Hz, 2000 Hz, 20 kHz, and 200 kHz. Depending on the frequency of the ac input signal, the 8060A automatically selects the proper range and displays the appropriate measurement unit, either Hz or kHz.
  • Page 57 Operating Instructions Operation Table 2-5. Sensitivity for the Frequency Function Input Signal Sensitivity (based on sine wave V rms) 12 Hz to 20 kHz 20 mV or 10% of voltage range* 20 kHz to 100 kHz 50 mV or 25% of voltage range* 100 kHz to 200 kHz 150 mV or 75% of voltage range* *Whichever value is greater.

  • Page 58: Decibel (Db)

    8060A Instruction Manual 2-24. Decibel (dB) The selection of dB is described in Figure 2-19. Like frequency, dB is automatically canceled if you select another function (resistance or frequency, for example). When dB is selected, the 8060A microcomputer converts ac or dc voltage readings to the dBm equivalent (decibels above or below one milliwatt).

  • Page 59: Dbv

    Operating Instructions Operation Decibel (dB) Decibel (dB) Button 1. Select range. Low (-) 2. Select AC or DC voltage function. High (+) 3. Ensure all other switches are out. 4. Press the decibel (dB) button to enable the decibel function: (Press again to disable): 5.

  • Page 60: Continuity ( )

    8060A Instruction Manual Turn the 8060A power switch off. Select Volts, AC, 2V range. Turn the power switch on while holding down the continuity button. When the .8.8.8.8 display appears, the power-on self-test is complete. Release the continuity button. The display should now read -.9990 to -1.0010.
  • Page 61 Operating Instructions Initial Check-Out Procedure Continuity ( Continuity Button Low (-) High (+) 1. Select range. 2. Set switch in for resistance function. 3. Ensure that other switches are out. 4. Press the button once to enable visible continuity: Press the button again to enable audible continuity: (Press again to disable both):...

  • Page 62: Initial Check-Out Procedure

    8060A Instruction Manual 2-27. Initial Check-Out Procedure Here is an easy procedure you can use to verify that your 8060A is operating properly for most functions. All you need to perform these tests are the test leads and access to a standard wall socket. Remember that you are not trying to verify the instrument accuracy, but are simply confirming that the functions work.
  • Page 63 Operating Instructions Initial Check-Out Procedure Push the button twice to enable the visible and audible continuity. You should see the bar in the display and hear the tone. Select the diode test (with the V S and A inputs still shorted together). The display should read .0102 .0015V.
  • Page 64 8060A Instruction Manual 2-36...

  • Page 65: Applications

    Chapter 3 Applications Contents Page 3-1. Introduction ..............3-3 3-2. Determining Amplifier Bandwidth........3-3 3-3. Using the 8060A as a Q-Meter......... 3-4 3-4. Measuring Amplifier Stage Gain with Relative dB..3-5 3-5. General Audio Uses............3-6 3-6. Using the 8060A to Measure Extremely Low Currents ... 3-7 3-7.
  • Page 66 8060A Instruction Manual...

  • Page 67: Introduction

    Applications Introduction 3-1. Introduction With its unique combination of features such as true rms, frequency, dB, relative reference and the 4½ digit display, the 8060A offers a wide variety of measurement capabilities, including measurement of amplifier bandwidth, the Q factor, amplifier stage gain in relative dB, and some other general audio applications.

  • Page 68: Using The 8060A As A Q-Meter

    8060A Instruction Manual Signal Amplifier Load 8060A Generator dB Rel. Ref. Level 0 dB -3 dB Bandwidth (BW) dx22f.eps Figure 3-1. Measuring Amplifier Bandwidth Increase the frequency input until the dB readings drop to -3.00 dB. Press the Hz button on the 8060A to read the upper frequency limit of the bandwidth.

  • Page 69: Measuring Amplifier Stage Gain With Relative Db

    Applications Measuring Amplifier Stage Gain with Relative dB High Q Medium Q Low Q fc = Center Frequency Bandwidth dx23f.eps Figure 3-2. Measuring Q with the 8060A 3-4. Measuring Amplifier Stage Gain with Relative dB When testing multi-stage amplifiers, we are usually interested in the dB gain or loss at each stage referenced to an initial dB level.

  • Page 70: General Audio Uses

    8060A Instruction Manual 1. Apply 20 mV to the first-stage input and measure it with the 8060A ac voltage function. 2. Press the dB button and then the REL button to create the 0 dB relative reference. 0 dB +34 dB +28 dB +38 dB 20 mV...

  • Page 71: Using The 8060A To Measure Extremely Low Currents

    Applications Using the 8060A to Measure Extremely Low Currents 3-6. Using the 8060A to Measure Extremely Low Currents By using high impedance dc voltage function and high M precision resistors, you can use the 8060A to measure extremely low currents. For example, if you place a 100 M resistor across the 8060A and select the high impedance dc voltage function and the 200 mV range, the 8060A will measure a 2 nanoamp (10...
  • Page 72 8060A Instruction Manual For an example of how to use this feature, let’s assume that you want to make ac voltage dBm measurements referenced to 50 . First select the 8060A ac voltage dB function and the 2V range. Referring to Table 3-1, we find that the equivalent voltage level for 0 dBm for 50 is 0.2236V and the equivalent dB level for 0 dBm referenced to 600 is -10.79 dBm.

  • Page 73: Changing Ac Db Reference Impedances With A Dc Source

    Applications Changing AC dB Reference Impedances with a DC Source Whenever you use Table 3-1, be sure you start with the 600 reference impedance selected on the 8060A. Otherwise the values and formulas listed in Table 3-1 will be incorrect because they use the 600 reference impedance as a starting point.
  • Page 74 8060A Instruction Manual 3-10...

  • Page 75: Theory Of Operation

    Chapter 4 Theory of Operation Contents Page 4-1. Introduction ..............4-3 4-2. Functional Description ............. 4-3 4-3. Microcomputer.............. 4-4 4-4. Measurement Acquisition Chip (MAC)......4-5 4-5. A/D Conversion Cycle..........4-6 4-6. Voltage Measurement ........... 4-8 4-7. Current Measurement............ 4-10 4-8. Resistance Measurement..........
  • Page 76 8060A Instruction Manual...

  • Page 77: Introduction

    Theory of Operation Introduction 4-1. Introduction This chapter describes how the 8060A works. An overview of the operation is provided first, followed by descriptions of the two major components and the measurement functions. A detailed schematic of the instrument appears in Chapter 8.

  • Page 78: Microcomputer

    8060A Instruction Manual Ohms Range Hz, dB, Source Voltage Divider Function REL Push V/ /S Switches Buttons +1.0000V Digital Ohms Ref A/D Ref Control Resistors Logic Common Micro- computer True RMS Converter AC Converter Frequency Counter Frequency (V AC) Power Current Power Supply Supply...

  • Page 79: Measurement Acquisition Chip (Mac)

    Theory of Operation Functional Description After the power-on self-test routine is successfully completed, the microcomputer checks to see if the operator has selected the ratio self-test or the switch decoding self-test (refer to Chapter 5 for operating instructions). If neither of the self-tests has been selected, the microcomputer begins the normal operating routine.

  • Page 80: A/D Conversion Cycle

    8060A Instruction Manual 4-5. A/D Conversion Cycle The heart of the MAC is the dual-slope a/d converter. A block diagram of the analog portion of the a/d converter is shown in Figure 4-2. The internal buffer, integrator, and comparators work in conjunction with external resistors and capacitors to convert the dc analog voltage to a digital number.

  • Page 81: A/D Measurement Cycle

    Theory of Operation Functional Description Integ Integ or Read 200 mV 2V dc To Digital Integrator Gain Control Logic Buffer Amp Read Integrator Comparators Reference Voltage Integ Unkown Input Voltage Internal to the MAC dx26f.eps Figure 4-2. Analog Portion of the A/D Converter A/D Measurement Cycle Integ Read...

  • Page 82: Voltage Measurement

    8060A Instruction Manual The integrate period begins at the end of the autozero period. As the period begins, the AZ switches open and the INTEG switches close. This applies the unknown input voltage to the input of the converter. The voltage is buffered and then begins charging the INTEG capacitor.

  • Page 83: Voltage Measurement

    Theory of Operation Functional Description The dc input voltages for all ranges are divided by the appropriate factor of 10 to produce a proportional dc signal which is then filtered and applied to the input to the a/d converter. The dc and ac voltage ranges and division factors are listed in Table 4-1 along with the corresponding range of inputs to the a/d converter.

  • Page 84: Current Measurement

    8060A Instruction Manual Table 4-1. Voltage Input Divider Input Function Range Range of A/D Converter Input Divider 200 mV -200 mV to +200 mV -2V to + 2V DC Voltage 1/100 -200 mV to + 200 mV 200V 1/1000 -200 mV to + 200 mV 1000V* 1/1000 -2V to + 2V (1V max.

  • Page 85: Conductance Measurement

    Theory of Operation Functional Description Current Shunt True RMS Converter Inputs to A/D Converter Common dx29f.eps Figure 4-5. Current Measurement The operation of the a/d converter during a resistance measurement is basically as described earlier in this chapter, with a few exceptions. During the integrate period the voltage drop across the unknown resistor charges the INTEG capacitor.

  • Page 86: Continuity Measurement

    8060A Instruction Manual Internal to the MAC Continuity Continuity Ref V Logic Comp. ORef - V/ /S Unknown Resistor Known Unknown Known V Ref V to A/D to A/D Converter Resistor Converter Ohms Source ORef + Common dx30f.eps Figure 4-6. Resistance/Conductance/Continuity Measurement 4-10.

  • Page 87: Frequency Measurement

    Theory of Operation Functional Description 4-11. Frequency Measurement Frequency measurement is illustrated in Figure 4-7. The ac input signal is divided by the voltage divider (Figure 4-4) and buffered by the ac rms converter. The signal is then applied to a comparator in the MAC for counting.
  • Page 88 8060A Instruction Manual 4-14...

  • Page 89: Maintenance

    Chapter 5 Maintenance Contents Page 5-1. Introduction ..............5-3 5-2. Service Information ............5-3 5-3. General Information ............5-4 5-4. Handling Precautions for Using Static Sensitive Devices................. 5-5 5-5. Disassembly and Reassembly ........5-5 5-6. Calibration and Backup Fuse Access ....... 5-6 5-7.
  • Page 90 8060A Instruction Manual...

  • Page 91: Introduction

    Malfunctions that occur within the limits of the warranty will be corrected at no cost to the purchaser. For in-warranty repair, call (toll-free) 800 426-0361 for the address of the nearest Fluke Technical Service Center designated to service your instrument. (In Alaska, Hawaii, Washington or Canada call 206 356-5400.) Ship the instrument postpaid in...

  • Page 92: General Information

    Options 1 kHz to 10 kHz, 0 to 200 V, (0.06%) Y5000, 5100A- 10 kHz to 30 kHz, 0 to 200V, (0.1%) 03, and Fluke Calibrator 30 kHz to 50 kHz, 0 to 200V, (0.25%) 5205A Amplifier 50 kHz to 100 kHz, 0 to 2.0V, (0.75%) Resistance: 100 to 10.0 M , (0.1%)

  • Page 93: Handling Precautions For Using Static Sensitive Devices

    Maintenance Service Information 5-4. Handling Precautions for Using Static Sensitive Devices Caution This instrument contains CMOS components which can be damaged by static discharge. Static sensitive components on the main pcb include U3 and U4. The microcomputer pcb includes one static sensitive component, U5, the microcomputer.

  • Page 94: Calibration And Backup Fuse Access

    8060A Instruction Manual Caution To avoid contaminating the pcbs with oil from the fingers, handle the pcbs by the edges or wear gloves. 5-6. Calibration and Backup Fuse Access Use the following procedure to gain access to the calibration adjustments or the backup fuse (F2): Disconnect the test leads and battery eliminator, if attached.

  • Page 95: Calibration And Backup Fuse (F2) Access)

    Maintenance Service Information AC Shield Elastomeric Strip Remove before removing Main PCB. When reassembling, install shield after installing Main PCB. Green Power Switch Cap Pry fuse out from the side. Backup Fuse F2 dx32c.eps Figure 5-1. Calibration and Backup Fuse (F2) Access)

  • Page 96: Main Pcb Access

    8060A Instruction Manual 5-7. Main PCB Access Use the following procedure to gain access to the main pcb: Remove the screw in the center of the ac shield and remove the shield. Using your index finger, lift up the lower right corner of the main pcb until it is free.

  • Page 97: Lcd And Microcomputer Pcb Disassembly And Assembly

    Maintenance Service Information 5-8. LCD and Microcomputer PCB Disassembly and Assembly Note This procedure applies to serial number 3995000 and higher. The procedure for disassembling or assembling the LCD and the microcomputer pcb is not difficult, but the steps must be followed in sequence.

  • Page 98: Assembling/Disassembling The Microcomputer Pcb And Lcd

    8060A Instruction Manual LCD Display Shock Absorber LCD Interconnect CAUTION: Use tweezers to insert. Do not handle with fingers. Microcomputer PCB CAUTION: LCD Bracket Static Sensitive. LCD Plate (Do not remove) Microcomputer LCD Support Interconnect CAUTION: Use tweezers to insert. Do not handle with fingers.

  • Page 99: Disassembling The Lcd

    Maintenance Service Information To disassemble the LCD, use your thumbnails and push on the corners of the LCD display, gasket and display lens so that all three components slide out together as shown in Figure 5-3. Note It is not necessary to remove the main pcb from the button case to disassemble or reassemble the LCD.

  • Page 100: Backup Fuse Replacement

    Replace the defective backup fuse with a 3A/600V type BBS-3 (Fluke PN 475004). Refer to section 2-4 for information about replacing fuse F1 (2A/250V; American style: fast acting type AGX2, 1/4 x 1”, Fluke PN 376582.; European style: 5 x 20 mm, Fluke PN 460972).

  • Page 101: Performance Tests

    Maintenance Performance Tests 5-11. Performance Tests The following procedures allow you to compare the performance of your instrument with the specifications listed in Chapter 1. They are recommended for incoming inspection, periodic calibration, and to verify specifications. If the instrument fails any test, calibration adjustment and/or repair is needed.
  • Page 102 8060A Instruction Manual Table 5-2. Voltage Test Input Signal Step Function Range Display Limits Level Freq. DC Voltage 200 mV + 190.00 mV 189.91 to 190.09 -189.91 to -190.09 200 mV -190.00 mV 1.9000V 1.8991 to 1.9009 19.000V 18.989 to 19.011 200V 190.00V 189.89 to 190.11...

  • Page 103: Resistance Test

    Maintenance Performance Tests 5-15. Resistance Test Use the following procedure to verify proper operation of the resistance function: Connect the UUT and the DMM Calibrator as shown in Figure 5-4. Select the resistance function and follow the steps 1 through 7 as listed in Table 5-3.

  • Page 104: Continuity Test

    8060A Instruction Manual Table 5-3. Resistance Test Step Range Input Resistance Display Limits short circuit 0.00 to 0.04 100.00 99.89 to 100.11 1.0000 k .9991 to 1.0009 20 k 10.000 k 9.991 to 10.009 200 k 100.00 k 99.91 to 100.09 1.0000 M .9983 to 1.0017 10.00 M...

  • Page 105: Current Test

    Maintenance Performance Tests Apply a resistance of 1.000 M . A reading of 993.0 to 1007.0 should appear on the display. Remove the resistance from the inputs to the UUT. The display should read 0.0 to 0.2. 5-18. Current Test Use the following procedures to verify proper operation of the dc and ac current functions: Connect the UUT and the DMM Calibrator as shown in Figure 5-5.

  • Page 106: Diode Test

    8060A Instruction Manual Table 5-4. Current Test Input Signal Step Function Range Display Limits Level Freq. 200 A 190.00 A 189.60 to 190.40 200 A -190.00 A -189.60 to -190.40 2 mA 1.9000 mA 1.8960 to 1.9040 Current dc 20 mA 19.000 mA 18.941 to 19.059 200 mA...

  • Page 107: Calibration Adjustment

    Test equipment needed for the adjustments is listed in Table 5-1. If the test equipment is not available, your nearest Fluke Service Center will be glad to help. Call the number listed in section 5-2 of this manual for assistance.
  • Page 108 8060A Instruction Manual On the UUT, select the dc voltage function and the 2 volt range. Turn R6 fully clockwise (CW), and turn R5 fully counterclockwise (CCW). Program the DMM Calibrator for an input of 1.9000V dc. Adjust R5 for a display reading slightly greater than 1.9000.

  • Page 109: Troubleshooting

    Maintenance Troubleshooting 5-22. Troubleshooting Caution Static discharge can damage MOS components U3, U4, and U5. Follow the handling precautions for static sensitive devices previously described in this chapter. Never remove, install or otherwise connect or disconnect components without first setting the instrument power switch off and disconnecting any inputs to the instrument.

  • Page 110: Switch Decoding Self-Test

    8060A Instruction Manual 5-25. Switch Decoding Self-Test To select the switch decoding self-test, hold down the REL button while you turn on the instrument. After the power-on self-test has been completed (the display is .8.8.8.8), release the REL button. The instrument should now indicate the switch decoding.

  • Page 111: Troubleshooting Guide

    Maintenance Troubleshooting Table 5-6. Switch Decoding Self-Test Range Display Digit 0* 200 ( A, mV or ) 0 (default if no range selected) 2000 Push Button Display Digit 1* none Function Display Digit 3* AC Voltage DC Voltage AC Current DC Current Resistance Conductance...
  • Page 112 8060A Instruction Manual Do not remove the main pcb from the bottom case unless you must do so to gain electrical access to circuits. You can gain electrical access to almost all of the input circuitry through the switch contact pins on the top of the switch deck (refer to the schematic in Chapter 8).
  • Page 113 Maintenance Troubleshooting Table 5-7. Troubleshooting Guide (cont) Test and Symptom Possible Cause/Suggestions Power Supply VDD (voltage between U3, Q1, VR1 TP7 and common) 5.2 0.12V VDG (voltage between U3, C21, U5 TP7 and TP8) 3.15 0.08V VSS (voltage between U4, C21, C23 TP2 and common) -5.1 0.27V TP4 1.225 0.025V...
  • Page 114 8060A Instruction Manual Table 5-7. Troubleshooting Guide (cont) Test and Symptom Possible Cause/Suggestions Voltage Test - DC (cont) High impedance dc readings 0.00 normal dc readings correct DC readings incorrect for Leakage from pcb, U3-6/7, all ranges contamination DC readings correct for Input divider or input divider switches, 200 mV, 2V-incorrect for 20V, 200V, 1000V...
  • Page 115 Maintenance Troubleshooting Table 5-7. Troubleshooting Guide (cont) Test and Symptom Possible Cause/Suggestions Resistance/Conductance Test (cont) CR1 supplying proper current Check values of the reference but reading off resistors for the range not working. Check voltage drops across the known and unknown resistors and make sure the ratio works properly.
  • Page 116 8060A Instruction Manual Table 5-7. Troubleshooting Guide (cont) Test and Symptom Possible Cause/Suggestions Frequency Test (cont) Frequency calibration is good Frequency compactor in U3 not and signal present at U3-4, responding. To check comparator, but frequency readings off select switch-decoding self-test and apply input of 15 mV ac in the 200 mV ac range.
  • Page 117 Maintenance Troubleshooting Table 5-8. Troubleshooting the Resistance Function: Voltage Sources for Ranges Voltage Source Range Comment ( 10%) 4.5V These values should be obtained when 1.2V no external resistors are connected to the 20 k 1.2V resistance inputs. Measure voltage 200 k 1.2V between common (J2) and TP10.
  • Page 118 8060A Instruction Manual Table 5-9. U3 (MAC) Pin Descriptions (cont) Pin No. Mnemonic Description Output of the a/d buffer circuit. Input for AZ capacitor. Input for INTEG capacitor. Battery test input. +5.2V supply feedback (nominally 1V) Gate drive for JFET. Series pass element +5.2V supply.

  • Page 119: List Of Replaceable Parts

    Chapter 6 List of Replaceable Parts Contents Page 6-1. Introduction ..............6-3 6-2. How to Obtain Parts ............6-3 6-3. Manual Status Information ..........6-4 6-4. Newer Instruments............6-4 6-5. Service Centers..............6-4...
  • Page 120 8060A Instruction Manual...

  • Page 121: Introduction

    Fluke Corporation and its authorized representatives by using the part number under the heading FLUKE STOCK NO. In the U.S., order directly from the Fluke Parts Dept. by calling 1-800-526-4731. Parts price information is available from the Fluke Corporation or its representatives.

  • Page 122: Manual Status Information

    These changes are documented on a manual supplement which, when applicable, is included with the manual. 6-5. Service Centers 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...

  • Page 123: 8060A Final Assembly

    List of Replaceable Parts Manual Status Information Ref or Fluke Part Revision Assembly Name Option No. Level Main PCB Assembly 865803 Display PCB Assembly 538306 Rms PCB Assembly 609120 Table 6-1. 8060A Final Assembly Ref. Description Notes Des. MAIN PCB ASSEMBLY...
  • Page 124 TEST LEAD ASSY, TL70A 855820 MP40 BUTTON,FUNC,SW,DK PEWTER, MODIFIED 930347 MP41 GUIDE,DMM ACCESSORY LIST 825851 SWITCH ELASTOMERIC4 POSITION 587055 8060A INSTRUCTION MANUAL 609146 8060A OPERATOR GUIDE 632679 FINAL TESTED PLASTIC PKG-8060 704759 LCD, 4.5 DIGIT, MULTIPLEXED 799973 GROUND STRIP,BECU,1.980+-.035 817254 1.
  • Page 125 List of Replaceable Parts dx37c.eps Figure 6-1. 8060A Final Assembly...
  • Page 126 8060A Instruction Manual dx38c.eps Figure 6-1. 8060A Final Assembly (cont)

  • Page 127: A1 Main Pcb Assembly

    List of Replaceable Parts Table 6-2. A1 Main PCB Assembly Ref. Description Qty Notes Rms PCB ASSEMBLY 609120 C1,C23, CAP,AL,100UF,+-20%,6.3V,SOLV PROOF 615906 C32,C34 CAP,CER,8PF,+-0.25PF,1000V,C0H 643551 CAP,VAR,0.25-1.5PF,1700V,TEFLON 218206 CAP,CER,47PF,+-2%,100V,C0G 832295 CAP,CER,0.01UF,+-2%,50V,C0G 631044 CAP,CER,820PF,+-2%,50V,C0G 631002 CAP,VAR,4.2-20PF,100V,CER 631408 CAP,VAR,9-90PF,50V,CER 643130 C9,C18 CAP,POLYPR,0.22UF,+-10%,160V 446799 C10,C14 CAP,CER,0.01UF,+-20%,50V,Z5U 659045...
  • Page 128 8060A Instruction Manual Table 6-2. A1 Main PCB Assembly (cont) Ref. Description Qty Notes SPRING 535211 MP12-15 SPACER,LED .330 LG 930342 TRANSISTOR,SI,N-JFET,SEL,TO-92 721936 Q3,Q4,Q6 TRANSISTOR,SI,NPN,60V,310MW,SEL,TO-92 886916 TRANSISTOR,SI,NPN,30V,1W,TO-92 242065 R1,R2 RES,MF,1K,+-1%,100PPM,FLMPRF,FUSIBLE 474080 RES,CC,100M,+-10%,0.5W 190520 RES,CF,5.6K,+-5%,0.25W 442350 RES,VAR,CERM,2K,+-20%,0.3W 603753 RES,VAR,CERM,200,+-20%,0.3W 603738 RES,MF,154K,+-1%,0.125W,100PPM 289447 RES,VAR,CERM,1K,+-20%,0.3W 614065...
  • Page 129 List of Replaceable Parts Table 6-2. A1 Main PCB Assembly (cont) Ref. Description Qty Notes CRYSTAL,3.2MHZ,+-0.005%,HC-18/U 513937 RNET,MF POLY,SIP,8060 HI V DIVIDER 539213 RES,WW,NET,TOL MATCHED 461491 RNET,MF,POLY,SIP,8060 LO V DIVIDER 611467 RES,CERM,NET,TOL/TC MATCHED 614164 RES,CERM,NET,TOL/TC MATCHED 614149 RNET,CERM,SIP,8060 I SHUNT 737569 1.
  • Page 130 8060A Instruction Manual 8060A-4301 dx39c.eps Figure 6-2. A1 Main PCB Assembly 6-12...

  • Page 131: A3 Rms Pcb Assembly

    List of Replaceable Parts Table 6-3. A3 Rms PCB Assembly Ref. Description Qty Notes CAP,TA,22UF,+-20%,6V,6032 876545 CAP,TA,2.2UF,+-20%,6V,3216 930248 CAP,TA,10UF,+-20%,6V,3216 105954 CAP,CER,0.1UF,+-10%,25V,X7R,0805 942529 DIODE,SI,DUAL,100V,200MA,SOT-23 821116 TRANSISTOR,SI,PNP,50V,225MW,SOT-23 820910 R1,R2 RES,MF,10K,+-0.1%,.125W,25PPM,1206 106366 RES,MF,8.45K,+-0.1%,.125W,25PPM,1206 689528 R4,R15, RES,CERM,15K,+-1%,.125W,100PPM,1206 769810 R5,R6 RES,CERM,200K,+-1%,0.1W,100PPM,0805 928882 RES,CERM,10K,+-1%,.125W,100PPM,1206 769794 RES,CERM,10M,+-5%,.125W,300PPM,1206 783274 THERMISTOR,RECT,POS,1.5K,+-30% 822015...
  • Page 132 8060A Instruction Manual Circuit 1 Ref Des View Circuit 2 Ref Des View 8060A-4003M dx60f.eps Figure 6-3. A3 Rms PCB Assembly 6-14...

  • Page 133: Schematic Diagrams

    Chapter 7 Schematic Diagrams Figure Title Page 7-1. A1 Main PCB Component Locations....... 7-3 7-2. Test Point Locations ............7-4 7-3. A/D Measurement Cycle ..........7-5 7-4. Switch Detail ..............7-5 7-5. A1 Main PCB Schematic Diagram........7-7 7-6. A3 rms PCB Schematic Diagram ........7-8...
  • Page 134 8060A Instruction Manual...

  • Page 135: A1 Main Pcb Component Locations

    Schematic Diagrams 8060A-4301 dx39c.eps Figure 7-1. A1 Main PCB Component Locations...

  • Page 136: Test Point Locations

    8060A Instruction Manual TP3 - Z4-1 (Accessible only on bottom of A1 Main PCB) TP10 Top of R16 Top of VR3 Thru-hole TP11 S2A/N.O. S2D/Wiper (hole in AC Shield) Test Point Description VDD, +5.2V supply. VSS, -5.1V supply. VDG, digital supply, +3.15V ref. to VDD (TP7) VBG, bandgap ref., 1.2345V Supply ground.

  • Page 137: A/D Measurement Cycle

    Schematic Diagrams 50mS Shown, is the a/d measurement cycle for three readings: halfscale, fullscale and overrange (refer to Figure 4-3 and Section 4 for theory of operation). The three overlaid traces shown were made on a storage oscilloscope connected to U3-17 and triggered by TP6.
  • Page 138 8060A Instruction Manual...
  • Page 139 8060A Instruction Manual 8060A-1201 iu46c.eps Figure 7-5. A1 Main PCB Schmatic Diagram...
  • Page 140 8060A Instruction Manual 8060A-1003 iu61f.eps Figure 7-6. A3 rms PCB Schmatic Diagram...

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