FLUKE 863_867b 电路图.pdf

867B,863 Graphical Multimeters Service Manual PN 689312 December 1997 1997 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies. RadioFans.CN 收音机爱 好者资料库 LIMITED WARRANTY IP 52, Drip Proof Safety: Designed to meet IEC 1010-1 Category III, UL3111, CSA-C22.2. 1010-1-92, CE and TUV requirements Certification: Electromagnetic Interference RF Emissions EN-50081-1 Commercial Limits VFG 243-1991 FCC Part 15 Class B, RF Susceptibility: EN 50082-1 Industrial Limits Introduction and Specifications Specifications1 1-7 100 90 80 70 60 50 40 30 20 10 0 -20020406080100120140 Temperature ( F) Temperature ( C) %RH -4 -20 32 030405060 = Normal Operation (0 C 50 C) = Storage (-20 C 60 C) os1f.eps Figure 1-1. Temperature and Humidity Power Fluke 867BFluke 863 Battery Eliminator/ChargerYesOptional Eliminator only NiCd Battery PackYes Optional BP7217 Battery Pack Optional BC7210 Ext. Charger Alkaline Batteries 6 AA CellsOptional Customer SuppliedYes Battery Life: NiCad Alkaline 8 hrs (supplied) 8 hrs (optional) 10 hrs (optional) 8 hrs (supplied) 867B,863 Service Manual 1-8 Resolution and Accuracy The following specifications apply within 1 year of calibration when operating in a temperature range of 18C (64F) to 28C (82F). AC Volts (True RMS, AC-Coupled) (percent of reading + counts) Frequency RangeRes. 20 - 50 Hz 50 - 1 kHz 1 kHz - 30 kHz 30 kHz- 100 kHz 100kHz- 200kHz 200 kHz- 300 kHz 300.00 mV0.01 mV1.5% + 10 0.19 dB 0.5% + 10 0.10 dB 0.5% + 10 0.10 dB 4% + 200 1.39 dB 8% + 200 1.68 dB 10%+ 200 1.82 dB 3.0000V0.1 mV1.5% + 10 0.19 dB 0.5% + 10 0.10 dB 0.5% + 10 0.10 dB 4% + 200 1.39 dB 8% + 200 1.68 dB 10%+ 200 1.82 dB 30.000V1 mV1.5% + 10 0.19 dB 0.5% + 10 0.10 dB 0.5% + 10 0.10 dB 4% + 200 1.39 dB 8% + 200 1.68 dB 10%+ 200 1.82 dB 300.00V10 mV1.5% + 10 0.19 dB 0.5% + 10 0.10 dB 0.5% + 10 0.10 dB 4% + 200 1.39 dB 8% + 200 1.68 dB 10%+ 200 1.82 dB 1000.0V100 mV1.5% + 10 0.19 dB 1.5% + 10 0.19 dB NANANANA 300 mV - 300V ranges 3:1, 1000V range 3:1 decreasing to 1.41:1 as input voltage increases to 1000V (peak voltage not to exceed 1414V). Measurement Range:300 mV range from 10% to 100% of range. 3V - 1000V ranges from 5% to 100% of range. For frequencies 100 kHz 30% to 100% of range (all ranges). Introduction and Specifications Specifications1 1-9 AC Volts - Average Responding AC Coupled (percent of reading + counts) Frequency RangeRes. 20 - 50 Hz50 - 1 kHz1 kHz - 30 kHz30 kH - 50 kHz 300.0 mV0.1 mV1.5% + 4 0.25 dB 0.5% + 4 0.16 dB 0.5% + 4 0.16 dB 2% + 4 0.25 dB 3.000V1 mV1.5% + 4 0.25 dB 0.5% + 4 0.16 dB 0.5% + 4 0.16 dB 2% + 4 0.25 dB 30.00V10 mV1.5% + 4 0.25 dB 0.5% + 4 0.16 dB 0.5% + 4 0.16 dB 2% + 4 0.25 dB 300.0V100 mV1.5% + 4 0.25 dB 0.5% + 4 0.16 dB 0.5% + 4 0.16 dB 2% + 4 0.25 dB 1000V1 V1.5% + 4 0.25 dB 1.5% + 4 0.25 dB NANA Input Impedance: 1.11 M 1% in series with 0.1 F Volts-Hertz Product: 2 x 107 Common Mode Rejection: 60 dB at 50 Hz and 60 Hz (1 k unbalance) Common Mode Volts-Hertz Product: 1 x 107 dBm Reference: 2, 4, 8, 16, 50, 75, 93, 110, 125, 135, 150, 300, 600, 900, 1000, and 1200 Overload Protection: 1000V rms DC Volts (percent of reading + counts) FunctionRangeRes.Fluke 867BFluke 863 mV DC 300.00 mV0.01 mV0.025% + 20.04% + 2 3000.0 mV0.1 mV0.025% + 20.04% + 2 30.000V0.001 V0.025% + 20.04% + 2 V DC300.00V0.01 V0.025% + 20.04% + 2 1000.0V0.1 V0.025% + 20.04% + 2 Input Impedance: V DC-10 M, mV DC-10 M, mV DC Hi-Z -1000 M Normal Mode Rejection: 60 dB at 50 Hz or 60 Hz Common Mode Rejection: 120 dB a dc, 90 dB at 50 Hz and 60 Hz (1 k unbalance) Overload Protection: 1000 V rms Maximum Allowable Peak AC + DC Voltage (without causing a reading error) 300 mV, 3000 mV ranges: 15V 30V range: 1000V; 300V, 1000V ranges: 1414V 867B,863 Service Manual 1-10 Diode Test (Manual) Range: 3V Resolution: 0.0001V Accuracy: 0.05% of reading + 2 digits Open Circuit Voltage: 3.1V Diode Test (Auto) Accuracy: 20% Current Ranges Ranges for True RMS AC Current and DC Current True RMS Measurement Range (% Range to % Full Scale) Ranges for Average Responding AC Current Maximum Burden Voltage Fuse Protection 300.00 A15% - 100%300.0 A0.03V440 mA 1000V 3000.0 A15% - 100%3000 A0.3V440 mA 1000V 30.000 mA5% - 100%30.00 mA0.03V440 mA 1000V 300.00 mA5% - 100%300.0 mA0.3V440 mA 1000V 3.0000A5% - 100%3.000A0.1V11A 1000V 10.000A5% - 100%10.00A0.3V11A 1000V 1. DC ranges available on the Fluke 867B only. DC Current Accuracy (percent of reading + counts) RangeResolutionAccuracy 300 A10.01 A0.1% + 15 3000 A10.1 A0.1% + 2 30 mA21 A0.05% + 15 300 mA10 A0.1% + 2 3A100 A0.2% + 15 10A1 mA0.2% + 2 1. Ranges available on the Fluke 867B only. 2. Fluke 863 30 mA DC range accuracy 0.1% + 15. AC Current Accuracy (percent of reading + counts) RangeResolutionTrue RMS AC Current Accuracy (Average AC counts)2 True RMSAvg.20 Hz to 50 Hz 50 Hz to 3 kHz 3 kHz to 10 kHz 10 kHz to 30 kHz 300 A10.01 A0.1 A1% + 10 (4)0.75% + 10 (4)2% + 20 (4)2% + 40 (4) 3000 A10.1 A1 A1% + 10 (4)0.75% + 10 (4)2% + 20 (4)2% + 40 (4) 30 mA1 A10 A1% + 10 (4)0.75% + 10 (4)2% + 20 (4)2% + 40 (4) 300 mA10 A100 A1% + 10 (4)0.75% + 10 (4)2% + 20 (4)NA 3A100 A1 mA1% + 10 (4)0.75% + 10 (4)NANA 10A1 mA10 mA1% + 10 (4)0.75% + 10 (4)NANA 1. Ranges available on the Fluke 867B only. 2. Replace counts with Average AC counts for Average Responding AC measurements. In 300 A range, floor count increases to 20 with battery eliminator. Introduction and Specifications Specifications1 1-11 Conductance (percent of reading + counts) RangeResolutionAccuracy Open Circuit Voltage 300.00 nS0.01 nS0.5% + 203.2V 3000.0 nS0.1 nS0.5% + 203.2V Overload Protection: 1000V rms Capacitance (percent of reading + counts) RangeResolutionAccuracy 10000 pF110 pF1.9% + 20 .1000 F100 pF1.9% + 2 1.000 F1 nF1.9% + 2 10.00 F0.01 F1.9% + 2 100.0 F0.1 F1.9% + 2 1000 F1 F1.9% + 2 10000 F2, 3100 F10% + 900 Overload Protection: 1000V rms 1. 10,000 pF range last digit reads zero. 2. 10,000 F range last two digits read zero. 3. Using REL to zero internal offset. Continuity Beeper Values RangeBeeper OnBeeper Off 30032136 3 k212725 30 k15864799 300 k 15.3 k45.5 k 3 M152.7 k459.1 k 30 M66 k194 k Resistance (percent of reading + counts) RangeResolutionAccuracyMaximum Current Open Circuit Voltage 300.000.01 0.07% + 101 mA3.2V 3.0000 k0.1 0.07% + 2120 A1.5V 30.000 k1 0.07% + 214 A1.5V 300.00 k10 0.07% + 21.5 A1.5V 3.0000 M100 0.15% + 2150 nA1.5V 30.000 M1 k0.2% + 3320 nA3.2V 867B,863 Service Manual 1-12 Frequency AC Sensitivity AC VoltsAC Current FrequencySine Wave Level FrequencyRangesSine Wave Level 2 Hz - 500 kHz60 mV rms5 Hz - 30 kHz300 A - 300 mA20% of range 500 kHz - 1 MHz100 mV rms5 Hz - 2 kHz3A300 mA 1 MHz - 2 MHz*1V rms5 Hz - 2 kHz10A3A * Use single trigger mode for inputs above 1 MHz. Accuracy (percent of reading + counts) RangeResolutionAccuracy 1000.00 Hz0.01 Hz0.05% + 2 10.0000 kHz0.1 Hz0.05% + 1 100.000 kHz1 Hz0.05% + 1 1.00000 MHz10 Hz0.05% + 1 2.0000 MHz100 Hz0.05% + 1 Duty Cycle Range: 0.1% to 99.9% Accuracy: (5.2% divided by the pulse width in microseconds + 2 counts) (1 ms = 1000 microseconds). Period Ranges: 999.99 s, 9.999 ms, 99.99 ms, and 999 ms Accuracy: (0.05% of reading + 2 counts) Pulse Width Ranges: 999.99 s, 9.999 ms, 99.99 ms, and 999 ms Accuracy: (5.2% divided by the pulse width in microseconds + 2 counts) (1 ms = 1000 microseconds). Introduction and Specifications Specifications1 1-13 Logic (Fluke 867B Only) Trigger Levels1 Logic FamilyLowHigh 3V CMOS1.4V1.7V 5V CMOS2.6V2.8V TTL1.7V1.9V 1. Frequency measurements will trigger on the logic family high levels. All measurements are made using the Logic/Ext. Trig. input jack. 2. For frequency 1 MHz use full logic level. Frequency Measurements FrequencyResolutionAccuracy 1000.00 Hz 0.01 Hz 0.05% + 2 10.0000 kHz0.1 Hz0.05% + 1 100.000 kHz 1 Hz 0.05% + 1 1.00000 MHz 10 Hz 0.05% + 1 2.0000 MHz 100 Hz 0.05% + 1 10.0000 MHz100 Hz0.05% + 1 867B,863 Service Manual 1-14 Component Test FrequencyCapacitance 2 Hz0.72 F to 72 F 20 Hz0.072 F to 7.2 F 200 Hz7200 pF to 0.72 F 2 kHz720 pF to 0.072 F 18.75 kHz77 pF to 7700 pF Peak Hold Captures peak minimums and maximums of signals 10 s. Accuracy: (5% of reading + 30 counts) MIN/MAX/AVG Accuracy: add 8 counts to the number of counts in the accuracy table of the selected function. View Mode Specifications Horizontal Specifications Sample Rate: 4.8 Megasamples per second Sample per Division: 20 per horizontal division Samples Captured: 512 in Single Shot and Glitch Capture; 256 all other modes Update Rate: 4 times per second Time Base Modes: Single Shot and Recurrent Ranges: From 4.2 s per division to 5 seconds per division Trigger Types: Internal and External Coupling: AC, DC and Glitch Capture External Trigger Impedance: 1 M in parallel with 75 pF External Trigger Input: Logic/External Trigger Terminal External Trigger Level: 5V adjustable in 10 steps Amplitude Specifications Amplitude Resolution: 8 bits Frequency Response (-3 dB) Volts DC Coupled: DC to 1 MHz Volts AC Coupled: 3 Hz to 1 MHz Input Impedance Refer to the meter mode specifications Glitch Capture Glitch Trigger Level:20% of range 300 mV - 300V 6% of range 1000V Minimum Glitch Time: 1 s 2-1 Chapter 2 Theory of Operation TitlePage 2-1.Introduction. 2-3 2-2.Start-Up Sequence. 2-3 2-3.Function Selection. 2-3 2-4.Power Supply. 2-4 2-5.Power Supply Input Voltages. 2-4 2-6.Power Supply Output Voltages and Currents. 2-6 2-7.Power Supply Signals. 2-7 2-8.Power ON/OFF Requirements. 2-8 2-9.NiCd Charging Requirements. 2-8 2-10.Battery and Line Level Detection. 2-8 2-11.Power Supply Functional Blocks. 2-9 2-12.Input Power Selector (A). 2-9 2-13.Boost Preregulator (B). 2-10 2-14.Battery Charger (C). 2-10 2-15.DC-DC Converter (D) . 2-12 2-16.Backlight Current Sink (E). 2-12 2-17.Power Switch Circuitry (F). 2-12 2-18.LCD Contrast Control (G). 2-12 2-19.Power-On Reset Circuit (H). 2-12 2-20.Linear Post Regulators (I). 2-13 2-21.Input Overload Protection. 2-13 2-22.Volt/Ohms Input Protection. 2-13 2-23.External Trigger and Logic Activity Input Protection. 2-14 2-24.Amps / mA / A Input Protection. 2-14 2-25.Input Signal Conditioning. 2-14 2-26.AC Volts. 2-14 2-27.DC Volts. 2-16 2-28.mV DC. 2-16 2-29.Ohms. 2-17 2-30.Diode Test. 2-17 2-31.Capacitance. 2-17 2-32.mA/A. 2-18 2-33.Amps. 2-18 2-34.Waveform Processing. 2-19 2-35.Overview. 2-19 2-36.Detailed Description. 2-19 867B,863 Service Manual 2-2 2-37.Waveform Triggering. 2-20 2-38.Overview. 2-20 2-39.Dual Trigger. 2-20 2-40.Single Trigger. 2-21 2-41.External Trigger. 2-21 2-42.Glitch Capture. 2-22 2-43.Single Shot. 2-22 2-44.Frequency Trigger . 2-22 2-45.Logic Activity Trigger. 2-22 2-46.Peak Hold. 2-22 2-47.Auto Diode. 2-22 2-48.Component Test. 2-23 2-49.Digital Circuitry. 2-24 2-50.RS-232 Serial Port . 2-24 Theory of Operation Introduction2 2-3 Introduction2-1. This chapter describes the functional blocks shown in Figure 2-1. Overall descriptions are broken down into Power Supply, Analog Circuitry, and Digital Circuitry. For all measurements, inputs (e.g., and ) are applied through overvoltage (and overcurrent) protection circuits, switched to an appropriate range, and branched into two signal paths. One path leads first to a Fast A/D