287/289 True-rms Digital Multimeters Calibration Manual February 2008, Rev. 1, 3/09 © 2008, 2009 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
Lifetime Limited Warranty Each Fluke 20, 70, 80, 170, 180 and 280 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase.
Table of Contents Title Lifetime Limited Warranty ................................................................................ Introduction........................................................................................................ Contacting Fluke................................................................................................ Precautions and Safety Information................................................................... International Symbols ..........................
287/289 Calibration Manual LCD Test ....................................................................................................... IR Port Verification ....................................................................................... Temperature Accuracy Test........................................................................... Accuracy Tests for Volts, Current, Ω, E, and G Test Functions ............... Calibration Adjustment.............................................................
List of Tables Table 1. 2. 3. 4. 5. 6. 7. 8. 9. Title Symbols.................................................................................................................. Required Equipment............................................................................................... Temperature Test Input and Display ...................................................................... 287/289 Performance Test Steps............................................................................
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List of Figures Figure Title 1. 2. 3. 4. 5. Testing the Current Fuses....................................................................................... Battery and Fuse Replacement............................................................................... PCA Component Location ..................................................................................... Calibration Adjustment Screenshot........................................................................ Replacement Parts ..........
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True-rms Digital Multimeters Introduction XW Warning To avoid shock or injury, do not perform the verification tests or calibration procedures described in this manual unless you are qualified to do so. The information provided in this document is for the use of qualified personnel only. WCaution The 287 & 289 True-rms Digital Multimeters contain parts that can be damaged by static discharge. Follow the standard practices for handling static sensitive devices.
287/289 Calibration Manual Address correspondence to: Fluke Corporation P.O. Box 9090, Everett, WA 98206-9090 USA Fluke Europe B.V. P.O. Box 1186, 5602 BD Eindhoven The Netherlands Visit us on the World Wide Web at: www.fluke.com Precautions and Safety Information XWWarning To avoid possible electric shock or personal injury, use this Meter only as specified in this manual or the protection provided by the Meter might be impaired. Read the “Safety Information” page before servicing this product.
True-rms Digital Multimeters Safety Information • • • • • CAN/CSA-C22.2 No. 61010-1-04 IEC/EN 61010-1 2nd Edition Pollution Degree 2 EMC EN 61326-1 Measurement Category III, 1000V, Pollution Degree 2 Measurement Category IV, 600 V, Pollution Degree 2 XWWarning To avoid possible electric shock or personal injury, follow these guidelines: • Use this Meter only as specified in this manual or the protection provided by the Meter might be impaired. • Do not use the Meter if it is damaged.
287/289 Calibration Manual • Do not operate the Meter around explosive gas, vapor, or dust. • Use only 1.5 V AA batteries, properly installed in the Meter case, to power the Meter. • When servicing the Meter, use only specified replacement parts. • When using probes, keep fingers behind the finger guards on the probes. • Do not use the Low Pass Filter option to verify the presence of hazardous voltages. Voltages greater than what is indicated may be present.
True-rms Digital Multimeters General Specifications General Specifications Maximum voltage between any Terminal and Earth Ground: 1000 V W Fuse Protection for mA or μA inputs............. 0.44 A (44/100 A, 440 mA), 1000 V FAST Fuse, Fluke specified part only W Fuse Protection for A input ............................ 11 A, 1000 V FAST Fuse, Fluke specified part only Battery Type .......................................................... 6 AA Alkaline batteries, NEDA 15A IEC LR6 Battery Life ...............
287/289 Calibration Manual AC Voltage Specifications Function [5] AC mV AC V dBV Range Resolution [1] 0.001 mV 0.01 mV 0.0001 V 0.001 V 0.01 V 0.1 V 0.01 dB 0.01 dB 0.01 dB 0.01 dB 0.01 dB 50 mV 500 mV [1] 5V [1] 50 V [1] 500 V 1000 V [3] -70 to -62 dB [3] -62 to -52 dB [3] -52 to -6 dB [3] -6 to +34 dB [3] 34 to 60 dB Low pass [4] filter L [4] [1] [2] 1000 V 0.1 V 20 to 45 Hz 45 to 65 Hz 1.5 % + 60 1.5 % + 60 1.5 % + 60 1.5 % + 60 1.5 % + 60 1.5 % + 60 3 dB 1.5 dB 0.2 dB 0.2 dB 0.2 dB 0.
True-rms Digital Multimeters Detailed Specifications DC Voltage Specification Function [3] DC mV DC V L [1] [1] [1] [2] [3] [4] [5] Range Resolution 50 mV 500 mV 5V 50 V 500 V 1000 V 0.001 mV 0.01 mV 0.0001 V 0.001 V 0.01 V 0.1 V 1000 V 0.1 V Accuracy [2] AC over DC, DC over AC, AC + DC 45 Hz to 20 to 35 kHz 20 to 45 Hz 1 to 20 kHz 1 kHz [2] DC [4] 0.05 % + 20 [5] 0.025 % + 2 0.025 % + 2 0.025 % + 2 0.03 % + 2 0.03 % + 2 2 % + 80 1 % + 20 Not Spec’d 0.5 % + 80 1.5 % + 40 1.
287/289 Calibration Manual Temperature Specifications Accuracy [1,2] Temperature Resolution -200 °C to +1350 °C 0.1 °C 1 % + 10 -328 °F to +2462 °F 0.1 °F 1 % + 18 [1] Does not include error of the thermocouple probe. [2] Accuracy specification assumes ambient temperature stable to ±1 °C. For ambient temperature changes of ±5 °C, rated accuracy applies after 2 hours.
True-rms Digital Multimeters Detailed Specifications Frequency Counter Sensitivity Input Range 50 mV 500 mV 5V 50 V 500 V 1000 V Input Range Approximate Voltage Sensitivity [1] (rms sine wave) 15 Hz to 100 kHz AC Bandwidth 5 mV 25 mV 0.25 V 2.5 V 25 V 50 V Approximate Current Sensitivity (rms sine wave) 15 Hz to 10 kHz Approximate DC Trigger Levels [2] 1 MHz 1 MHz 700 kHz 1 MHz 300 kHz 300 kHz 5 mV & 20 mV 20 mV & 60 mV 1.4 V & 2.0 V 0.5 V & 6.
287/289 Calibration Manual Burden Voltage (A, mA, μA) Function mA, μA A Range Burden Voltage 500 μA 102 μV/ μA 5000 μA 50.000 mA 400.00 mA 5.0000 A 10.000 A 102 μV/ μA 1.8 mV/mA 1.8 mV/mA 0.04 V/A 0.04 V/A Required Equipment Required equipment is listed in Table 2. If the recommended models are not available, equipment with equivalent specifications may be used. Repairs or servicing should be performed only by qualified personnel. Table 2.
True-rms Digital Multimeters Basic Maintenance Basic Maintenance XW Warning To avoid electrical shock or personal injury, remove the test leads and any input signals before opening the case or replacing the battery or fuses. To prevent damage or injury, install ONLY batteries or fuses specified for this product. Opening the Meter Case W Caution To avoid unintended circuit shorting, always place the uncovered Meter assembly on a protective surface.
287/289 Calibration Manual Reassembling the Meter Case To reassemble the Meter case, do the following: 1. Verify the rotary switch knob is in the N position (arrow on the rotary switch detent points straight up to the LCD). 2. Install the display bezel, LCD, and top shield into the top case. 3. On the PCA, align the RSOB housing so that the arrow is in the same orientation as the rotary switch knob (arrow points straight up to the LCD). 4.
True-rms Digital Multimeters Basic Maintenance 8:10pm 06/13/07 10.000 0 Menu 100 200 300 Save 400 k Auto Range 500 Replace F1 if reading is OL Setup 8:10pm 06/13/07 0.50 0 100 Menu 200 300 400 Auto Range 500 Save Replace F2 if reading is OL Setup Figure 1. Testing the Current Fuses est33.eps Replacing Fuses XW Warning To avoid electrical shock, remove the test leads and any input signals before replacing the battery or fuses.
287/289 Calibration Manual 3. Replace the batteries, observing proper polarity. Replace the battery door and secure it by turning the fastener to the lock position. F2 11 A F1 0.44 A Figure 2. Battery and Fuse Replacement est32.eps Cleaning Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives, isopropyl alcohol, or solvents. XWWarning To avoid electrical shock or damage to the Meter, never allow water inside the case.
True-rms Digital Multimeters Performance Tests Factory Default Prior to completing the Performance tests Reset the Meter to the factory defaults as follows: 1. Power the Meter on in any function. 2. Press F4 (Setup) and select Reset using arrow keys. 3. Press F3 (Meter). 4. Press F1 (OK). The Meter should go through power up routine. Power LED Test The Meter’s power button has an LED backlight.
287/289 Calibration Manual IR Port Verification Note If you are using MET/CAL to do performance testing over the Meter’s IR port, it is not necessary to perform this verification test. 1. Connect the Infrared Serial Cable to the USB port of a PC, with windows 98 or later, and the Meter’s IR port at the top of the Meter. 2. Turn the Meter on, and set the rotary switch to any function. 3. On the PC, go to “Start”, and under Programs, Accessories, open “HyperTerminal” 4.
True-rms Digital Multimeters Performance Tests 1. Turn the Meter on and position the rotary switch to N and select the temperature function. Select the degrees C function key. 2. On the Meter, select Offset. Adjust the offset to 000.0 using keypad edit buttons. 3. Close the Offset window. 4. Set the 5520A for K-type thermocouple and an output of 0 °C. 5. Perform the measurement steps in Table 3. Table 3. Temperature Test Input and Display Display Input Lower Limit Upper Limit 0.0 °C -1.0 °C 1.
287/289 Calibration Manual Table 4. 287/289 Performance Test Steps (cont.) Step 5. Function DC mV Range 50.000 mV Input Level Frequency or Model 50 mV[2] Display Reading[1] Lower Limit Upper Limit 49.955 50.045 Discontinue REL Offsets 6. DC mV 500.00 mV 500 mV 499.85 500.15 7. DC mV 500.00 mV -250 mV -250.08 -249.92 8. mV DC/AC 500.00 mV 50 mV 0 Hz 49.97 50.03 9. mV AC/DC 500.00 mV 250 mV 35 kHz 237.10 262.
True-rms Digital Multimeters Performance Tests Table 4. 287/289 Performance Test Steps (cont.) Step Function 31. VAC, Lo Pass (289) 32. Range Input Level Frequency or Model Display Reading[1] Lower Limit Upper Limit 48.60 51.40 0.00 8.00 500.00 V 50 V 60 Hz VAC, Lo Pass (289) 500.00 V 50 V 1600 Hz[3] 33. VAC 500.00 V 500 V 10 kHz 497.75 502.25 34. VAC 1000.0 V 1000 V 10 kHz 993.5 1006.5 35. DC V 5.0000 V 4V 3.9988 4.0012 36. DC V 50.000 V -40 V -40.012 -39.
7/289 Calibration Manual Table 4. 287/289 Performance Test Steps (cont.) Step Function Range Input Level 52 μA DC 5000.0 μA 5000 μA 53 mA AC 50.000 mA 4 mA Frequency or Model 20 Hz Display Reading[1] Lower Limit Upper Limit 4996.0 5004.0 3.940 4.060 29.375 [5] 30.625[5] 54 mA AC 50.000 mA 30 mA 30 kHz 55 mA AC 400.00 mA 300 mA 30 kHz 284.60 315.40 56 mA AC 400.00 mA 400 mA 60 Hz 397.55 402.45 57 mA DC 50.000 mA 0.1 mA 0.090 0.110 58 mA DC 50.
True-rms Digital Multimeters Calibration Adjustment Operation Calibration adjustment is started by pressing the F1 [Setup] softkey, and then navigating to “Calibration” on the Setup menu. Note Calibration will not be allowed with a low battery condition. When “Calibration” is selected in the Setup menu, the F1-F4 softkeys function as shown in Table 5. Table 5. Calibration Entry Softkeys Key Function Description F1 Calibrate Starts calibration after successful password entry.
287/289 Calibration Manual 4. Locate the PCA CAL key pad as shown in Figure 3. 5. Short the CAL key pad terminals to reset the password. When the password is reset, the Meter beeps to indicate that the action is complete. TP8 TP10 CAL Key Pad Battery Terminal 9 V Figure 3. PCA Component Location est90.
True-rms Digital Multimeters Calibration Adjustment screen. 4. Calibration Step progress indicator. 5. Calibration status message. Usually blank, but displays one of the following messages when the given condition occurs: • “Calibrating”... is shown while measurements are being made after Next is pressed. All softkeys except for ABORT are disabled during this time. • An error message is shown if the rotary switch is in an incorrect position for the present step.
287/289 Calibration Manual If the measurement is not within calibration tolerance then after pressing NEXT an error message will be shown and the calibration step will not proceed. The operator can adjust input signal if needed and attempt NEXT again. If the meter continues to give an error message after the source is validated then the calibration procedure may not proceed and the meter will need service. User should select the Abort softkey to exit the calibration procedure.
True-rms Digital Multimeters Calibration Adjustment Table 7. Calibration Adjustment Steps for Firmware Version 1.00 (cont.) Rotary Switch Position Step Source Value Settling Time (seconds) Calibrating Time[1] (seconds) 9 mV AC 0.0 V, 0 Hz 10 5 10 VAC 0.0 V, 0 Hz 4 10 11 VAC 5.0000 V, 60 Hz 10 5 5 35 [2] 12 VAC 5.0000 V, 65 kHz 13 VAC 50.000 V, 60 Hz 6 10 14 VAC 50.000 V, 100 kHz 6 120 15 VAC 250.00 V, 60 Hz 8 2 16 VAC 500.00 V , 60 Hz 6 5 17 VAC 1000.
287/289 Calibration Manual Table 7. Calibration Adjustment Steps for Firmware Version 1.00 (cont.) Step Rotary Switch Position Source Value Settling Time (seconds) Calibrating Time[1] (seconds) Connect the 5520A in a 4-Wire configuration and select COMP 2-Wire 39 Diode Test 0 Ω, zcomp wire2 2 2 40 Diode Test 3.1 V, 0 Hz 2 2 41 μA DC 500.0 μA, 0 Hz 3 4 42 μA DC 5000.0 μA, 0 Hz 3 4 43 μA AC 500.0 μA, 60 Hz 10 4 44 μA AC 5000.0 μA, 60 Hz 10 3 45 mA DC 50.
True-rms Digital Multimeters Calibration Adjustment Table 8. Calibration Adjustments Steps for Firmware Version 1.10 (cont.) Rotary Switch Position Step Source Value Settling Time (seconds) Calibrating Time[1] (seconds) 6 mV DC 500.0 mV, 0 Hz 2 1 7 mV AC 5.0 mV, 700 Hz 4 2 8 mV AC 50.0 mV, 700 Hz 3 3 9 mV AC 500.0 mV, 700 Hz 3 2 10 mV AC 500.0 mV, 55 Hz 2 3 11 mV AC 50.0 mV, 55 Hz 10 6 12 mVAC 0.0 V, 0 Hz 2 6 13 VAC 0.0 V, 0 Hz 2 15 14 VAC 5.
287/289 Calibration Manual Table . Calibration Adjustments Steps for Firmware Version 1.10 (cont.) Rotary Switch Position Step Source Value Settling Time (seconds) Calibrating Time[1] (seconds) 36 Ω 5.0 MΩ 2 9 37 Ω 50.0 MΩ 2 9 38 Ω 500.0 MΩ 2 2 Connect the 5520A in a 4-Wire configuration and select COMP 2-Wire 39 Diode Test 0.0 Ω, zcomp wire2 2 1 40 Diode Test 3.1 V, 0 Hz 2 1 41 μA DC 5000 μA, 0 Hz 2 1 42 μA AC 5000 μA, 55 Hz 2 1 43 mA DC 400.
True-rms Digital Multimeters Parts Parts Table 9 lists that available replacement parts shown in Figure 5. Table 9. Replacement Parts Ref Des. Description Fluke Part No.
287/289 Calibration Manual MP7 MP2 MP16 MP30 MP5 MP3 DS1 MP12 MP42-44 MP6 MP8 MP1 MP49 XBT1 H15-18 (4x) XBT2-3 MP9 H7-14 (8x) MP4 MP45 MP46 H1-6 (6x) Figure 5. Replacement Parts 30 est34.
