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fluke 123 manualAll rights reserved. All product names are trademarks of their respective companies. Unpacking the Test Tool Kit. Safely Using the Test Tool. Using The Test Tool. Goal of this Chapter. Powering the Test Tool.Resetting the Test Tool.Changing Backlight.Reading the Screen. The introduction does not cover all of the capabilities of the test tool but gives basic examples to show how to use the menus perform basic operations. Powering the Test Tool Follow the procedure (step 1 to 3) in Figure 1-1 to power the test tool from a standard ac outlet. The high brightness increases when you connect the To change the brightness of the display in Fluke 123, do power adapter.Brighten the backlight again. Refer to Figure 1-3 during the following. Reading area Displays the numeric readings. Because only input A is on, you will see the input A readings only. Subsequently follow steps to open a menu and to choose an item. Press the SCOPE MENU key to open the Scope menu. The test tool provides two 4-mm safety shielded banana jack inputs (red input A and gray input B) and a black safety 4-mm banana jack input (COM). This function optimizes the position, range, time base, and triggering and assures a stable display on nearly all waveforms. Open the INPUT B menu. Now, you will see a screen like Figure 1-8. Highlight ON. Turn Input B on. When a new stable reading is detected, the test tool beeps and displays the new Freeze the screen. This feature is useful when you need to monitor the measured value in relation to a known good value. Open the INPUT A menu. Press a second time to select the manual range.Press until you have left any open menu. Observe that the following main menu appears on bottom of the screen. Open the SCOPE OPTIONS submenu. Jump to WAVEFORM MODE. Highlight SMOOTH. Accept waveform smooth. Figure 1-11. Smoothing the Waveform You can use waveform smooth to suppress noise without loss of bandwidth. The secondary (small) reading shows: the average (AVG) reading and the date.http://highdesertrent.com/newsite/images/uploads/fiat-500-service-manual-pdf.xml
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Change MIN into MAX reading. Run appears on bottom of the screen when the single acquisition is triggered. Hold appears on bottom of the screen when the single acquisition has been completed. Open the SCOPE OPTIONS submenu. To invert the input A waveform, do the following: Open the SCOPE INPUTS menu. Observe the trigger Triggering tells the test tool when to begin displaying the icon on the second time division waveform. You can select which input signal should be line indicates the trigger level. Accept the video trigger selections. Figure 1-18. Measuring Video Signals. To view a specific video line in more detail you can select the line number. To measure on a selected video line, To choose line 135, do the following: continue from point of the previous example as follows:. Fluke 123 has 10 memories while Fluke 124 has 20 memories. In each memory you can save a screen and the related settings. Highlight RECALL. View the saved screen and belonging settings. If you want to clear all memory locations, press F3 DELETE ALL. If you want to clear just 1 memory location (e.g. Cursors allow you to make precise bottom of the screen, you can still use the arrow digital measurements on waveforms. keys. A marker is markers (See Figure 1-20). Use Turn off the cursors.Observe that the screen is freezed. Figure 1-22. Connecting a Serial Printer Open the PRINTER SETUP submenu. Connecting a Computer. For complete service, avoid abrasion of text on the test tool. Charging time is 7 hours (test tool is off). When fully charged, the batteries typically provide 6 hours of use at full brightness. Operating time is extended at normal brightness. Always operate the test tool on batteries until an -icon appears on the bottom line of the screen. Contact your authorized FLUKE Service Center for recycling information. To replace the battery pack, do the following: (See Figure 2-2.) You need to adjust other scope probes for optimal response.https://80ada.com/uploads/fiat-500-owners-manual-uk.xml Adjust the trimmer screw in the probe housing to give an optimum square wave. Open the PROBES submenu. Highlight PROBE AC ADJUST. Return to normal mode. Open the PROBE AC ADJUST submenu. A service manual can be downloaded from Fluke’s website www.fluke.com. Standard Accessories The next tables list the user-replaceable parts for the various test tool models. To order replacement parts, contact your nearest service center. Set of two Shielded Test Leads (Red and Gray), designed for use only STL120 with the Fluke ScopeMeter 120 series test tool. Set contains the following replaceable part: Ground Lead with Alligator Clip (Black) Supplied with: Fluke 123, 124 BB120 (Set of two) Two Banana-to-BNC Adapters (Black).Using the Tilt Stand The test tool is equipped with a tilt stand, allowing viewing from an angle. From the main menu, choose CONTRAST. Highlight GRID TYPE. The test tool has a date and time clock. To change the Choose 20. date to (e.g.) 20 June, 2002, do the following: Jump to FORMAT. Open USER OPTIONS menu. When operated on the battery pack (no Power Adapter connected), the test tool conserves power by shuting itself down. If you have not pressed a key for at least 30 minutes, the test tool turns itself off automatically. On delivery or after a reset, the Auto Set function captures Highlight UNCHANGED.Accept the new Auto Set configuration. Use the short ground lead(s) when measuring DC or AC signals on input A and input B. (See Figure 3-2.) Warning To avoid electrical shock or fire, use only one COM (common) connection. Specified non-tolerance (including. Trace disturbance with STL120 Table 1 No visible disturbance. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Please see our Privacy Policy for more information. Update your browser for more security, comfort and the best experience for this site. Try Findchips PRO Specifications subject to change without notice.http://www.diamondsinthemaking.com/content/dynex-dsx-manual All product, Each Fluke product is warranted to be free from defects in material and workmanship under normal use Connect the probe's output cable to the desired input on the test tool. Connect the power adapter to the AC outlet,.Chapter 2 of the Users Manuals for Model 123 and for Model 43(B) explain how to, with the Fluke ScopeMeter Model 123 and the Fluke Power Quality Analyzer Model 43(B). Chapter 2 of, switched off. This Rechargeable Battery Pack is designed for use with the Fluke ScopeMeter Model 123 and the Fluke Power Quality Analyzer Model 43(B). Chapter 2 of the Users Manuals for Model 123 and Printed in U.S.A. All product names are, Each Fluke product is warranted to be free from defects in material and workmanship under normal use, end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to Printed in China All product names are trademarks of their respective companies. LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from, on Flukea??s behalf. To obtain service during the warranty period, contact your nearest Fluke, AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED.G 5 Fluke 1520 Users Manual Key functions, the display backlight ON and OFF. 7 Fluke 1520 Users Manual Display Table 2 and Figure 2 Industrial professionals bring Fluke infrared cameras to the job because they do the job. Over 65 years of industrial experience give Fluke infrared tools the level of performance needed to keep you up and running. With the innovative features and functionality in the Fluke Ti125 This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke 's opinion, operation or handling. Fluke warrants that software will operate substantially in accordance with its LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product, warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke. Innovative functions designed to help technicians troubleshoot more efficientally and get the answers they need to keep their systems up and running. Display. FLUKE 123. FLUKE 124. FLUKE 125. Bandwidth. 20 MHz. 40 MHz. 40 MHz. Measurement functions 2-channels- TRMS- multimeter. My Fluke 123 scopemeter is suffering even worse from this. Reload to refresh your session. Reload to refresh your session. Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Kedvenc igaslovamat is elerte a Fluke kor. A zebragumi az LCD alatt osszetomorodott. Emiatt nem olvashato a kijelzo. Megpucoltam, ha kezzel nyomom, jo. A regi gumiba bele van preselodve a NYAK vezetosavok osszes csikja. A kepen szepen latszik, ahogy osszetomorodott. Ebay-en leltem repair KIT-et, de picit sokallom a kozel 10e Ft arat a 2 gumiert. Megis 1986-ban gyartottak szegenyt a NYAK szerint.Koszonom! FLUKE PM3384b 100MHz 2-4 bemenetek digitalis uzemmodban nem mukodnek Sziasztok! A targyban nevezett szkop 2-4 bemenetei nem mukodnek digitalis uzemmodban. A szkopban levo digitalizalo kartyan a csatornak 1-3,2-4 bemenetenkent vannak osszefogva. Meresek utan ugy nez ki, hogy a jel bemegy a OQ0233 szamu (egyedi Philips gyartmany) IC-be, de onnan mar nem jon ki tisztes alakban. Ha esetleg valakinek volna ilyen kartyaja megmaradva, azt szivesen fogadnam! Koszi a segitseget. Udv,Maga a keszulek mukodokepes jo allapotu de csinal fura dolgokat. Olyan szakit keresnek aki ismeri ezt a tipust es rendbe kapna esetleg tudna kalibralni is.Megbizhato szerviz is szoba johet. Koszonom a segitseget!A szoban forgo multimeter bekapcsolas utan bemutatkozik, hogy FLUKE truem RMS multimeter, majd ures kepernyore valt (habar egyszer ugy fagyott le, hogy a kepernyon maradt a bemutatkozasi szoveg). Be marad kapcsolva, mert latom a labortapon, hogy cca 50mA-t huz es a zold nyomogomb alatt vilagit a LED de onnent tovabb semmi. Szetszedes utan a kis elem rozsdasodasan kivul semmi lathato serulest nem talaltam nem is hiszem, hogy a kis elem lemerulese ilyen tipusu gondot jelenthetne. Nyilvan software hibara tippelek, habar nem kizart az is, hogy golyozasi problemaban szenved mivel a NYAK tuloldalan ott van a proci, meg a periferiai, persze BGA-ban. Mi itt a megoldas, hogyan lehet ezt a nemes muszert ujra eletre kelteni. Udvozletem Similar manuals: You can write in English language into the forum (not only in Hungarian). Our walk-in counter is closed indefinitely. Combines the three most frequently used service tools in one. Connect-and-View? hands-off operation for checking an entire troubleshooting sequence without ever touching a button. Checks and troubleshoots AC and DC motor drives, sensors and actuators, line voltage, transformers and converters, analog and digital control loops. Single, shielded test lead measures all functions for intuitive ease of use.Signal anomalies, dropouts and glitches that might cause a machine to go down, are best displayed with an oscilloscope. The ScopeMeter 120 Series meet today’s need of simultaneously measuring and checking waveforms. The unique Connect-and-View.It really is as easy as one-two-three! Leave all other test tools behind, the ScopeMeter 123 is the only tool you’ll need One test lead measures all No time wasted finding or swapping leads. The included accessories allow hook-up at test objects of every dimension. Which is why the ScopeMeter 123 has Connect-and-View automatic triggering.You don’t have to worry about triggering and instrument settings, and you have all the information on screen to do the job right. The handheld format and the weight of just 1.2 kg, make the instrument easy to carry and to fit comfortably in your hand. The rugged and drip proof case assures long life and reliable operation in the harshest industrial environments. Floating measurements, safety certified While conventional oscilloscopes can only make measurements referenced to power line ground, the Fluke 123 makes floating measurements so there is no risk of an accidental ground short circuit when making a connection. The ScopeMeter 123 and the included shielded test leads are safety certified for measurements on 600 V CAT III industrial power systems. And using the VPS40 probe, measurements up to 1000 V CAT II re fully supported. Via the optically isolated RS-232 or USB interface, the ScopeMeter 120 Series can be safely connected to a printer for direct print-out or to a PC for later analysis and documentation using FlukeView software.Wrong settings show unstable and sometimes wrong results. Fluke’s unique Connect-and-View recognizes signal patterns, and automatically sets up correct triggering. It provides a stable, reliable and repeatable display of virtually any signal - including motor drive and control signals - without you touching a button. Signal changes are instantly recognized and settings adjusted for a stable display. Benefit from the speed and convenience when measuring a number of test points in quick succession. They can be caused by bad connections, dust, dirt, corrosion or simply broken wiring or connectors. You may not be around to see it — your Fluke ScopeMeter will. The two inputs can plot any combination of volts, amps, temperature, frequency and phase - with time and date stamp -to help lead you to the cause of those faults quickly. Print or import the data into your report. Store complete Replay cycles for analysis of waveform changes. Store complete memory content of the ScopeMeter on your PC for back-up purposes. Display the actual, MIN, MAX and AVG reading. The warranty period begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke's opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption. 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. 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. To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB Destination), to the nearest Fluke authorized service center. Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision. This Service Manual provides the information necessary to maintain the test tool at customer level. The following information is presented in this Service Manual: Chapter 1. Introduction and safety Instructions. Read carefully before using or servicing the test tool. Chapter 2. Characteristics. A complete set of detailed specifications. Chapter 3. Performance Verification. Chapter 4. Calibration Adjustment. Chapter 5. Disassembling the test tool. Chapter 6. List of Replaceable Parts. Important. The Main PCA in this test tool is only available to Fluke Service Centers due to the programming that is necessary after installation. 1.2 Safety Introduction Read these pages carefully before beginning to install and use the instrument. The following paragraphs contain information, cautions and warnings which must be followed to ensure safe operation and to keep the instrument in a safe condition. Warning Servicing described in this manual is to be done only by qualified service personnel. To avoid electrical shock, do not service the instrument unless you are qualified to do so Safety Precautions For the correct and safe use of this instrument it is essential that both operating and service personnel follow generally accepted safety procedures in addition to the safety precautions specified in this manual. Specific warning and caution statements, where they apply, will be found throughout the manual. Go to Fluke s website for recycling information Impaired Safety Whenever it is likely that safety has been impaired, the instrument must be turned off and disconnected from line power. The matter should then be referred to qualified technicians. Safety is likely to be impaired if, for example, the instrument fails to perform the intended measurements or shows visible damage General Safety Information Warning Removing the instrument covers or removing parts, except those to which access can be gained by hand, is likely to expose live parts and accessible terminals which can be dangerous to life. The instrument shall be disconnected from all voltage sources before it is opened. Capacitors inside the instrument can hold their charge even if the instrument has been separated from all voltage sources. Components which are important for the safety of the instrument may only be replaced by components obtained through your local FLUKE organization. Specified non-tolerance numerical values indicate those that could be nominally expected from the mean of a range of identical ScopeMeter test tools. Specifications are based on a one year calibration cycle. Environmental Data The environmental data mentioned in this manual are based on the results of the manufacturer s verification procedures. Smooth Suppresses noise from a waveform. Envelope Records and displays the minimum and maximum of waveforms over time. Auto Set (Connect-and-View TM ) Continuous fully automatic adjustment of amplitude, time base, trigger levels, trigger gap, and hold-off. Peak Modes Max peak, Min peak, or pk-to-pk Ranges 500 mv, 5V, 50V, 500V, 1250V Accuracy: Max peak or Min peak 5 of full scale Peak-to-Peak 10 of full scale Full Scale Reading 500 counts Frequency (Hz) Ranges 1Hz, 10Hz, 100Hz, 1 khz, 10 khz, 100 khz, 1 MHz, 10 MHz, and 50 MHz (Fluke 123) or 70 MHz (Fluke 124, 125). Average, Min, Max and Time from Start of Readout (in ROLL mode, instrument in HOLD). Min, Max and Time from Start of Readout (in TRENDPLOT mode, instrument in HOLD). Dual Vertical Lines Peak-Peak, Time Distance and Reciprocal Time Distance Readout. Average, Min, Max and Time Distance Readout (in ROLL mode, instrument in HOLD). Dual Horizontal Lines High, Low and Peak-Peak Readout. Rise or Fall Time Transition Time, 0-Level and 100- Level Readout (Manual or Auto Leveling: Auto Leveling only possible in Single Channel Mode). Parallel via PAC91 (optically isolated print adapter cable, optional). To PC Dump and load settings and data. To avoid electrical shock, do not perform any servicing unless you are qualified to do so. The test tool should be calibrated and in operating condition when you receive it. The following performance tests are provided to ensure that the test tool is in a proper operating condition. The Performance Verification Procedure is based on the specifications, listed in Chapter 2 of this Service Manual. The values given here are valid for ambient temperatures between 18 C and 28 C. The Performance Verification Procedure is a quick way to check most of the test tool s specifications. Because of the highly integrated design of the test tool, it is not always necessary to check all features separately. For example: the duty cycle, pulse width, and frequency measurement are based on the same measurement principles; so only one of these functions needs to be verified. 3.2 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 Oscilloscope Calibration Option. Fluke BB120 Shielded Banana to Female BNC adapters (2x), supplied with the Fluke 123. For each procedure the test requirements are listed. If the result of the test does not meet the requirements, the test tool should be recalibrated or repaired if necessary. Some of the tests are slightly different for Fluke 123, 124, and Fluke 125. This is caused by the higher vertical and trigger bandwidth in Fluke 124 and 125. Moreover Fluke 125 has extra measuring functions and a slightly different way of operation. Differences in requirements for Fluke 123, 124, and 125 are clearly indicated. Follow these general instructions for all tests: For all tests, power the test tool with the PM8907 power adapter. A charged The battery pack must be installed. Allow the 5500A to satisfy its specified warm-up period. For each test point, wait for the 5500A to settle. Allow the test tool a minimum of 20 minutes to warm up. 3.4 Display and Backlight Test Proceed as follows to test the display and the backlight: 1. Press to turn the Test tool on. 2. Fluke 123: press and verify that the backlight is dimmed. Then select maximum backlight brightness again. Verify that the test tool can be switched between dimmed backlight and maximum brightness with the keys. During the tests, use maximum brightness for the best visibility. 3. Remove the adapter power, and verify that the backlight is dimmed. 4. Apply the adapter power and verify that the backlight brightness is set to maximum. 5. Press and hold. 6. Press and release. 7. Release. The test tool shows the calibration menu in the bottom of the display. Do not press now! If you did, turn the test tool off and on, and start at 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 3-1 may not be 3-4 35 Performance Verification 3.5 Input A and Input B Tests 3 visible or hardly visible. Observe the display closely, and verify that no light pixels are shown. Figure 3-1. Display Pixel Test Pattern 11. Press. The test pattern is removed; the test tool shows Contrast (CL 0110):MANUAL 12. Press (CAL). The test tool shows the display test pattern shown in Figure 3-1, 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 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 3-1 may not be visible or hardly visible. Observe the display closely, and verify that no dark pixels are shown. 15. Turn the test tool OFF and ON to exit the calibration menu and to return to the normal operating mode. 3.5 Input A and Input B Tests During verification you must open menus, and to choose items from the menu. Proceed as follows to make choices in a menu (see Figure 3.2): Open the menu, for example press (new) or (old). Press to highlight the item to be selected in a menu. Press to confirm the selection and to jump to the next item group (if present). Item groups in a menu are separated by a vertical line. Not selected items are marked by If a selected item is highlighted, an then is pressed, the item remains selected. You can also navigate through the menu using. To conform the highlighted item you must press. Before performing the Input A and Input B tests, the test tool must be set in a defined state, by performing a RESET. Proceed 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. For most tests, you must turn Input B on. Input A is always on. Proceed as follows to turn Input B on: Press to open the Meter B menu. Using select INPUT B: ON. Press to confirm the selection; the mark changes to. The active setting from the next item group will be highlighted (for example Vac ), and maintained after leaving the menu. Press to exit the menu Input A and B Base Line Jump Test Proceed as follows to check the Input A and Input B base line jump: 3-6 37 Performance Verification 3.5 Input A and Input B Tests 3 1. Short circuit the Input A and the Input B shielded banana sockets of the test tool. Press to select auto ranging (AUTO in top of display). ( toggles between AUTO and MANUAL ranging). After changing the time base wait some seconds until the trace has settled. Observe the Input A trace, and check to see if it returns to the same position after changing the time base. Observe the Input A trace, and check to see if it is set to the same position after changing the time base. After changing the sensitivity wait some seconds until the trace has settled. Observe the Input A trace, and check to see if it is set to the same position after changing the sensitivity. Do not press anymore. Set the 5500A to Operate (OPR). 4. Adjust the amplitude of the sine wave to 0.5 division on the display. 5. Verify that the signal is well triggered. Note The lower transition point is tested in Section Input A Frequency Measurement Accuracy Test Proceed as follows to test the Input A frequency measurement accuracy: 1. Connect the test tool to the 5500A as for the previous test (see Figure 3-3). 2. Select the following test tool setup: Press to select auto ranging (AUTO in top of display). Press to open the INPUT A MEASUREMENTS menu, and choose: MEASURE on A: Hz 3. Set the 5500A to source a leveled sine wave of 600 mv peak-to-peak (SCOPE output, MODE levsine). Set the 5500A to Operate (OPR). 4. Set the 5500A frequency according to the first test point in Table Observe the Input B main reading on the test tool and check to see if it is within the range shown under the appropriate column. 6. Continue through the test points. 7. When you are finished, set the 5500A to Standby Input B Frequency Response Upper Transition Point Test Proceed as follows to test the Input B frequency response upper transition point: 1. Connect the test tool to the 5500A as for the previous test (see Figure 3-4). 2. Select the following test tool setup: Turn Input B on (if not already on). Press to select auto ranging (AUTO in top of display). Move the Input A and Input B ground level (indicated by zero icon ) to the center grid line. Proceed as follows: Press Press Using the to enable the arrow keys for moving the Input A ground level.For positive slope triggering, the trigger level is the top of the trigger icon ( ). Using select positive slope triggering (trigger icon ). Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool. Proceed as follows: 1. Connect the test tool to the 5500A as for the previous test (see Figure 3-5). 2. Select the following test tool setup: Press select auto ranging (AUTO in top of display). Fluke 125: press to open the TRIGGER menu, and choose: UPDATE: FREE RUN Fluke 125: press to open the SMOOTH menu, and choose: WAVEFORM: SMOOTH Move the Input A and Input B ground level (indicated by zero icon ) to the center grid line. Proceed as follows: Press Press Using the to enable the arrow keys for moving the Input A ground level.Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool. Proceed as follows to test the Input A and B AC Voltage accuracy: 1. Connect the test tool to the 5500A as for the previous test (see Figure 3-5). 2. Select the following test tool setup: Press to select auto ranging (AUTO in top of display). Press to open the INPUT A MEASUREMENTS menu, and choose: MEASURE on A: Vac Press to open the INPUT B MEASUREMENTS menu, and choose: INPUT B: ON MEASURE on B: Vac Move the Input A and Input B ground level (indicated by zero icon ) to the center grid line.