FLUKE 43 电路图.pdf

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1、 43 Power Quality Analyzer Service Manual 4822 872 05377 September 1998, Rev. 3, 07/00 1998, 2000 Fluke Corporation, All rights reserved. Printed in the Netherlands All product names are trademarks of their respective companies. RadioFans.CN 收音机爱 好者资料库 SERVICE CENTERS To locate an authorized service

2、 center, visit us on the World Wide Web: or call Fluke using any of the phone numbers listed below: +1-888-993-5853 in U.S.A. and Canada +31-402-678-200 in Europe +1-425-356-5500 from other countries RadioFans.CN 收音机爱 好者资料库 i Table of Contents ChapterTitlePage 1Safety Instructions. 1-1 1.1 Introduct

3、ion. 1-3 1.2 Safety Precautions. 1-3 1.3 Caution and Warning Statements. 1-3 1.4 Symbols. 1-3 1.5 Impaired Safety. 1-4 1.6 General Safety Information. 1-4 2Characteristics. 2-1 2.1 Introduction. 2-3 2.2 Safety Specifications. 2-3 2.3 Function Specifications . 2-4 2.3.1 Electrical functions. 2-4 2.3.

4、2 Scope. 2-5 2.3.3 Meter. 2-7 2.3.4 Record. 2-7 2.4 Miscellaneous. 2-8 2.5 Current Probe. 2-8 2.6 Environmental Conditions. 2-9 2.7 Electromagnetic Immunity. 2-10 3Circuit Descriptions. 3-1 3.1 Introduction. 3-3 3.2 Block Diagram. 3-3 3.2.1 Input 1 - Input 2 Measurement Circuits . 3-3 3.2.2 Trigger

5、Circuit. 3-5 3.2.3 Digital Circuit. 3-5 3.2.4 Power Circuit. 3-6 3.2.5 Start-up Sequence, Operating Modes. 3-7 3.3 Detailed Circuit Descriptions. 3-9 3.3.1 Power Circuit. 3-9 3.3.2 Input 1 - Input 2 Measurement Circuits . 3-14 3.3.3 Trigger Circuit. 3-20 RadioFans.CN 收音机爱 好者资料库 43 Service Manual ii

6、3.3.4 Digital Circuit. 3-24 4Performance Verification . 4-1 4.1 Introduction. 4-3 4.2 Equipment Required For Verification. 4-3 4.3 How To Verify. 4-3 4.4 Display and Backlight Test. 4-4 4.5 Input 1 and Input 2 Tests in the SCOPE MODE. 4-5 4.5.1 Input 1 Trigger Sensitivity Test. 4-6 4.5.2 Input 1 Fre

7、quency Response Upper Transition Point Test. 4-7 4.5.3 Input 1 Frequency Measurement Accuracy Test. 4-7 4.5.4 Input 2 Frequency Measurement Accuracy Test. 4-9 4.5.5 Input 2 Trigger Level and Trigger Slope Test . 4-10 4.5.6 Input 2 Trigger sensitivity Test. 4-12 4.5.7 Input 1 Trigger Level and Trigge

8、r Slope Test . 4-13 4.5.8 Input 1 and 2 DC Voltage Accuracy Test. 4-15 4.5.9 Input 1 and 2 AC Voltage Accuracy Test. 4-17 4.5.10 Input 1 and 2 AC Input Coupling Test. 4-19 4.5.11 Input 1 and 2 Volts Peak Measurements Test. 4-20 4.5.12 Input 1 and 2 Phase Measurements Test. 4-21 4.5.13 Input 1 and 2

9、High Voltage AC 50 V; 500 V; 1250 V minimum step.1 mV; 10 mV; 100 mV; 1 V (1 % + 10 counts) Current ranges (auto). 50.00 A to 500.0 kA, 1250 kA minimum step. 10 mA; 0.1 A; 1 A; 100 A, 1 kA (1 % + 10 counts) Frequency range. 10.0 Hz to 15.0 kHz 40.0 to 70.0 Hz.(0.5 % + 2 counts) resolution. 0.1 Hz; 1

10、 Hz; 10 Hz; 100 Hz Power Readings.Watt, VA, VAR, PF, DPF, Hz Watt, VA, VAR ranges (auto) .250 W to 250 MW, 625 MW, 1.56 GW when selected: total ( %r):.(2 % + 6 counts) when selected: fundamental ( %f):.(4 % + 4 counts) DPF .0.00 to 1.00 0.00 to 0.25.not specified 0.25 to 0.90. 0.04 0.90 to 1.00. 0.0

11、3 Characteristics 2.3 Function Specifications2 2-5 PF. 0.00 to 1.00 0.04 Frequency range.10.0 Hz to 15.0 kHz 40.0 to 70.0 Hz.(0.5 % + 2 counts) Harmonics Number of harmonics . DC.21, DC.33, DC.51 Readings / Cursor readings Vrms. fund. (3 % + 2 counts).31 st (5 % + 3 counts).51st (15 % + 5 counts) Ir

12、ms. fund. (3 % + 2 counts).31 st (5 % + 3 counts).51st (15 % + 5 counts) Watt. fund. (5 % + 10 counts).31 st (10 % + 10 counts)51st (30 % + 5 counts) Frequency of fundamental. 0.25 Hz Phase.fund. 3 . 51 st 15 K-factor (in Amp and Watt). 10 % Sags so only one of these functions needs to be verified.

13、4.2 Equipment Required For Verification The primary source instrument used in the verification procedures is the Fluke 5500A. If a 5500A is not available, you can substitute another calibrator as long as it meets the minimum test requirements. Fluke 5500A Multi Product Calibrator, including 5500A-SC

14、 Oscilloscope Calibration Option. Stackable Test Leads (4x), supplied with the 5500A. 50 Coax Cables (2x), Fluke PM9091 (1.5m) or PM9092 (0.5m). 50 feed through terminations (2x), Fluke PM9585. Fluke BB120 Shielded Banana to Female BNC adapters (2x), supplied with the Fluke 43. Dual Banana Plug to F

15、emale BNC Adapter (1x), Fluke PM9081/001. Dual Banana Jack to Male BNC Adapter (1x), Fluke PM9082/001. 4.3 How To Verify Verification procedures for the display function and measure functions follow. For each procedure the test requirements are listed. If the result of the test does not meet the req

16、uirements, the test tool should be recalibrated or repaired if necessary. Follow these general instructions for all tests: For all tests, power the test tool with the PM8907 power adapter. The battery pack must be installed. Allow the 5500A to satisfy its specified warm-up period. For each test poin

17、t , wait for the 5500A to settle. Allow the test tool a minimum of 20 minutes to warm up. 43 Service Manual 4-4 4.4 Display and Backlight Test Before doing the tests, you must reset the test tool to put it in a defined state. Proceed as follows to reset the test tool: Press to turn the test tool off

18、. Press and hold . Press and release to turn the test tool on. Wait until the test tool has beeped twice, and then release When the test tool has beeped twice, the RESET was successful. Proceed as follows to test the display and the backlight: 1. Press to turn the test tool on. 2. Remove the adapter

19、 power, and verify that the backlight is dimmed. 3. Apply the adapter power and verify that the backlight brightness is set to maximum. 4. Press to leave the STARTUP screen. 5. Press and hold . 6. Press and release . 7. Release The test tool shows the calibration menu in the bottom of the display. D

20、o not press now! If you did, press twice to turn the test tool off and on, and start at 4. 8. Press (PREV) three times. The test tool shows Contrast (CL 0100):MANUAL 9. Press (CAL) . The test tool shows a dark display; the test pattern as shown in Figure 4-1 may not be visible or hardly visible. Obs

21、erve the display closely, and verify that no light pixels are shown. Figure 4-1. Display Pixel Test Pattern Performance Verification 4.5 Input 1 and Input 2 Tests in the SCOPE MODE.4 4-5 11. Press . The test pattern is removed; the test tool shows Contrast (CL 0110):MANUAL 12. Press (CAL) . The test

22、 tool shows the display test pattern shown in Figure 4-1, at default contrast. Observe the test pattern closely, and verify that the no pixels with abnormal contrast are present in the display pattern squares. Also verify that the contrast of the upper left and upper right square of the test pattern

23、 are equal. 13. Press . The test pattern is removed; the test tool shows Contrast (CL 0120):MANUAL 14. Press (CAL) . The test tool shows a light display; the test pattern as shown in Figure 4-1 may not be visible or hardly visible. Observe the display closely, and verify that no dark pixels are show

24、n. 15. Press twice to turn the test tool OFF and ON to exit the calibration menu and to return to the normal operating mode. 4.5 Input 1 and Input 2 Tests in the SCOPE MODE. Before performing the Input 1 and Input 2 tests, the test tool must be set in a defined state, by performing a RESET. Proceed

25、as follows to reset the test tool: Press to turn the test tool off. Press and hold . Press and release to turn the test tool on. Wait until the test tool has beeped twice, and then release When the test tool has beeped twice, the RESET was successful. Now you must select the SCOPE MODE. Press to lea

26、ve the STARTUP screen. Press . Press up-down till SCOPE is highlighted. Press to select SCOPE mode. 43 Service Manual 4-6 4.5.1 Input 1 Trigger Sensitivity Test Proceed as follows to test the Input 1 trigger sensitivity: 1. Connect the test tool to the 5500A as shown in Figure 4-2. ST8004.CGM Figure

27、 4-2. Test Tool Input 1 to 5500A Scope Output 50 2. Select the AUTO test tool setup: Press to select the MENU. Press till SCOPE is highlighted. Press to select SCOPE mode. 3. Select timebase of 100 ns/d. Press to select RANGE. Press to select 100 ns/d. 4. Select sensitivity of 200 mV/d. Press to sel

28、ect 200 mV/d. 5. Set the 5500A to source a 5 MHz leveled sine wave of 100 mV peak-to-peak (SCOPE output, MODE levsine). 6. Verify that the signal is well triggered , if necessary adjust the trigger level (see 7). 7. Adjusting trigger level. Press to highlight TRIGGER, then press to adjust the trigge

29、r level. 8. Set the 5500A to source a 25 MHz leveled sine wave of 400 mV peak-to-peak. 9. Select timebase of 20 ns/d. Press to select RANGE. Press to select 20 ns/d. 10. Verify that the signal is well triggered , if necessary adjust the trigger level (see 7). 11. Set the 5500A to source a 40 MHz lev

30、eled sine wave of 1.8V peak-to-peak. 12. Verify that the signal is well triggered, if necessary adjust the trigger level (see 7). 13. When you are finished, set the 5500A to Standby. Performance Verification 4.5 Input 1 and Input 2 Tests in the SCOPE MODE.4 4-7 4.5.2 Input 1 Frequency Response Upper

31、 Transition Point Test Proceed as follows to test the Input 1 frequency response upper transition point: 1. Connect the test tool to the 5500A as for the previous test (see Figure 4-2). 2. Select the AUTO test tool setup: Press to select the MENU. Press till SCOPE is highlighted. Press to select SCO

32、PE mode 3. Select the following test tool setup: Press to select menu SCOPE SETUP. Press to highlight Input 1 Reading Press to go to Input 1 READING. Press to highlight AC + DCrms. Press to confirm; ? mark changes to I Press to highlight Input 1 Coupling. Press to select the Input 1 Coupling menu. P

33、ress to highlight DC Coupling. Press to confirm; ? mark changes to I. Press to return to SCOPE. 4. Set the 5500A to source a leveled sine wave of 1.2V peak-to-peak, 50 kHz (SCOPE output, MODE levsine). 5. Adjust the amplitude of the sine wave to a reading of 424 mV 8 mV. 6. Set the 5500A to 20 MHz, without changing the amplitude. 7. Observe the Input 1 trace and check the reading is 297 mV. 8. When you are finished, set the 5500A to Standby. Note The lower transition point is tested in Section 4.5.9. 4.5.3 Inp