The user can delay a portion of the signal off screen so they can view the important part of the waveform in greater detail. Press delay range 2nd F then Then use the, to adjust the waveform delay delay back to Index 36 Echo detection with dual Element Transducers 2017/3/25 Echo detection with dual Element Transducers Echoes must be greater in amplitude than 20 of screen height in order. 20 Echo not detected Note: The detection threshold is not the measurement point. Measurements are made using Algorithms and dsp and are independent of amplitude. 20 Echo detected Back to Index 37 2017/3/25 Freeze mode Press: freeze freeze allows the user to freeze both the waveform and thickness display, once the freeze key is pressed. The display can be reset by pressing the freeze key again or by pressing the save or meas keys. Press freeze again to return to a live measurement display. Note: The Freeze function is useful for high temperature applications.
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The gage is now ready to take thickness measurements of steel that is coated with external scale using the default setup. Back to Index 31 emat transducer people Calibration 2017/3/25 emat transducer Calibration For best accuracy it is recommended that the 38dl plus be calibrated using samples with external scale and known wall thickness. Perform the same cal Vel and Cal Zero procedure that is outlined for any single element transducer. Oxide Scale Known Steel thickness E110-sb back to Index 32 Using gain with the emat transducer 2017/3/25 Using gain with the emat transducer When using the emat transducer it will often be necessary to adjust the gain level in order to make proper echo detection. This is due to the variation in signal amplitude caused by changes in the external oxide thickness and surface conditions. Gain press then Use the, keys to adjust the gain Value gain too low echo not detected gain set properly set for echo detection Back to Index 33 waveform Controls a-scan Range Adjust Delay adjust 2017/3/25 waveform Controls a-scan Range Adjust Delay adjust Echo detection. The range should be set so that the echo from your thickest material will be on screen. Delay range press Successive presses of the range key toggles through the different ranges. Note: Adjusting the range will not affect meaning calibration. There are fixed display ranges for each transducer type depending on transducer frequency. Back to Index 35 2017/3/25 Delay adjust The delay function is used to adjust the beginning (left side) of the waveform.
The emat transducer does not require the the use of ultrasonic couplant. If the scale is not fully bonded to the surface of the steel, the shear wave sound energy will not be transmitted into the metal. Scale pipe e110-sb back to Index 29 2017/3/25 emat transducer emat transducers are designed to be a quick way of determining the approximate wall thickness without removing the external oxide scale. The E110-sb emat transducers generate shear sound waves in the steel material. The emat transducers create a non-focused signal and is designed to give a good estimate of the remaining wall thickness in or /-0.25 mm) emat transducers are relatively insensitive to small internal pits. The minimum capability is approximately. (2.0mm) Back to Index 30 Connecting the E110-sb emat transducer 2017/3/25 Connecting the E110-sb emat transducer The 1/2XA/E110 filter adapter must be plugged in to the transducer connectors located at the top of the 38dl plus. The E110-sb can then be connected to the 1/2XA/E110 adapter box using a standard Lemo to bnc cable. (lcb-74-4) lcb-74-4 38dl plus e110-sb the 38dl plus will automatically recall the default setup for the E110-sb (emat) transducer when the Adapter and E110-sb is plugged.
Back to Index 24 Instrument Lock, setting a password 2017/3/25 Instrument Lock, setting a password sp menu setup menu setting a password is an optional feature and the 38dl plus can be locked with out a password. Press Then use the, keys to select Password Set and press enter use the editing functions to enter a password and press Enter use the, keys to select set and press enter. Note: If the user forgets the password please contact Olympus for the master password. Back to Index 25 Instrument Lock with without Password 2017/3/25 Instrument Lock with without Password If a password has been set then the password must be entered in the Instrument Lock screen before any of the functions can be used. If a password has not been set then the password area will be grayed out. Sp menu setup menu press Then use the, keys to select Instrument Lock and press enter use the editing functions to enter a password and press Enter use, keys to select the a function to lock and, lock and unlock. Highlight set and press enter to activate the lock back to Index 26 Example of a locked function 2017/3/25 Example of a locked function wave adjust On: key locked! Back to Index 27 Model 38dl plus using the emat transducer 2017/3/25 Model 38dl plus using the emat transducer Back to Index 28 2017/3/25 emat transducer An emat (Electro magnetic Acoustic Transducer) uses the magnetostrictive principle to generate shear wave sound energy in ferrous metals.
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Vel cal 2nd F then The current velocity will be displayed. Use the arrow keys to enter the know velocity. Then press best meas press vel cal 2nd F then again The current coating velocity will be displayed. Then press meas back to Index. Thru-coat measurement Screen 2017/3/25 thru-coat measurement Screen Metal Thickness coating Thickness Back to Index 18, model 38dl plus calibration of Single Element Transducers 2017/3/25 Model 38dl plus calibration of Single Element Transducers Back to Index 19 Single Element Transducer/Setup Selection 2017/3/25 Single Element Transducer/Setup Selection. To select a default transducer setup press The user can select one of the default transducer setups or any of the user defined custom setups.
Ref value xdcr recall then use the, keys to select from the available lists and press enter then use the, keys to select a transducer setup and press the meas key to recall the setup and return to the measure mode. Back to Index 20 Single Element Cal Velocity 2017/3/25 Single Element Cal Velocity couple transducer to the thick sample and press: Allows the user to calibrate for the speed of sound of the material to be tested. Vel cal once reading is steady press: enter uncouple the transducer and enter the known thickness use in the, keys Back to Index 21 Single Element Cal Zero 2017/3/25 Single Element Cal Zero a subtracted time measurement used to compensate for the transit time through. Couple transducer to the thin sample press: do-zero cal zero once reading is steady press: enter uncouple the transducer and enter the known thickness use in the, keys Back to Index 22 Instrument Lock with Programmable password 2017/3/25 Model 38dl plus instrument Lock with Programmable. A password can be set so that the locked functions can not be unlocked without knowing the password The following functions can be locked Calibration Access to setup Menu and sp menu Transducer Recall Datalogger (except for the save key) The ability to adjust the.
Do-zero cal zero press: 2nd F then Rx Delay tx Use, to turn thru-coat on or Off, Press Enter Press Enter on ok to complete the do-zero note: The zero can be pressed at any time the transducer is uncoupled to update the zero offset. Back to Index 7, selecting measurement Units and Resolution 2017/3/25 Selecting measurement Units and Resolution sp menu setup menu press: Allows the user to set measurement Units and Resolution Use, to highlight the measurement setup then press enter use, to select units or resolution and. Model 38dl plus calibration Standard dual Transducers 2017/3/25 Model 38dl plus calibration Standard dual Transducers Back to Index 10, standard dual Element Cal Velocity 2017/3/25 Standard dual Element Cal Velocity couple transducer to the thick sample press: Allows the user to calibrate for the speed. Usually done on a sample representing the maximum of the measurement range. Vel cal once reading is steady press: enter uncouple the transducer and enter the known thickness Back to Index 11, standard dual Element Cal Zero 2017/3/25 Standard dual Element Cal Zero couple transducer to the thin sample press: A subtracted time measurement is used. Cal Zero is usually done on a sample representing the minimum of your measurement range.
Do-zero cal zero once reading is steady press: enter uncouple transducer and enter the known thickness. Then press the meas key to complete the calibration. Back to Index 12, model 38dl plus thru-coat calibration 2017/3/25 Model 38dl plus thru-coat calibration Back to Index 13, thru-coat cal Velocity 2017/3/25 thru-coat cal Velocity couple transducer to the thick sample press: Allows the user to calibrate for the speed of sound of the. Vel cal once the reading is steady press: enter uncouple the transducer and enter the known thickness Back to Index 14, thru-coat cal Zero couple transducer to the thin sample press: 2017/3/25 thru-coat cal Zero couple transducer to the thin sample press: A subtracted time. Press the meas key to complete the calibration or press the cal vel key to calibrate for the velocity of the coating. Back to Index 15 2017/3/25 coating Calibration couple transducer to a sample with known coating thickness press: Allows the user to calibrate for the speed of sound of the of the coating material. It is not necessary to calibrate for the coating if the coating value is not being displayed or if the accuracy of the coating thickness is of less importance. Vel cal once reading is steady press: enter uncouple the transducer and enter the known coating thickness Press meas to complete the calibration Back to Index 16, directly enter the velocity in thru-coat mode 2017/3/25 Directly enter the velocity in thru-coat mode Press Allows the. When using thru-coat the velocity of the coating can also be entered.
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Presentation Zen by my buddy garr reynolds. 1, model 38dl plus operation Training 2017/3/25 Model 38dl plus operation Training 2 2017/3/25 Index Click on the links below to go directly to the corresponding slide. (Please note: you have to be in slide show mode for the links to work.) Power Up do-zero-standard dual Transducers do-zero for thru-coat transducers Selecting Units and Resolution main Screen 38dlp standard Calibration 38dlp thru-coat calibration book Directly Enter Velocity, thru-coat mode thru-coat measurement Screen 38dlp. On 2017/3/25 Power Up The On/Off key is used to turn the 38dl plus on and off. On off back to Index 4, model 38dl plus dual Element do-zero 2017/3/25 Model 38dl plus dual Element do-zero back to Index 5, do-zero for Standard dual Transducers 2017/3/25 do-zero for Standard dual Transducers Uncouple the transducer and make sure the tip is free. Do-zero allows the gage to recognize the transducer for optimal setup. It will also measures the time of flight through the transducer to compensate for transducer wear and changes in temperature. Press do-zero cal zero 2nd F then Rx Delay tx Note: The 2nd f, zero can be pressed any time the transducer is uncoupled to update the zero offset. Back to Index 6, do-zero for thru-coat transducers 2017/3/25 do-zero for thru-coat transducers Uncouple the transducer and make sure the tip is free of any couplant layer.
The result is that you and the audience are out of synch. The reason people use a small font is twofold: first, that they dont know their material well enough; second, they think that more text is more convincing. Force yourself to use no font smaller than thirty points. I guarantee it will make your presentations better because it requires you to find the most salient points and to know how to explain them well. If thirty points, is too dogmatic, the i offer you an algorithm: find out the age of the oldest person in your audience and divide it by two. Thats your optimal font size. So please observe the 10/20/30 Rule of PowerPoint. If nothing else, the next time someone in your audience complains of hearing loss, ringing, or none vertigo, youll know what caused the problem. One last thing: to learn more about the zen of great presentations, check out a site called.
so it will take forty minutes to make it work with the projector. Even if setup goes perfectly, people will arrive late and have to leave early. In a perfect world, you give your pitch in twenty minutes, and you have forty minutes left for discussion. The majority of the presentations that I see have text in a ten point font. As much text as possible is jammed into the slide, and then the presenter reads. However, as soon as the audience figures out that youre reading the text, it reads ahead of you because it can read faster than you can speak.
These pitches are so lousy that Im losing my hearing, theres a constant ringing in my ear, and every once in while the world starts spinning. To prevent an epidemic of Ménières in the venture capital community, i am evangelizing the 10/20/30 Rule of PowerPoint. Its quite simple: a powerPoint presentation should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points. While Im in the venture capital business, this rule is applicable for any presentation to reach agreement: for example, raising capital, making a sale, forming a partnership, etc. Ten is the optimal number of slides in a powerPoint presentation because a normal human being cannot comprehend more than ten concepts in a meeting—and venture capitalists are very normal. (The only difference between you and venture capitalist is that he is getting paid to gamble with someone elses money). If you must use more than ten slides to explain your business, you probably dont have a business. The ten topics that a venture capitalist cares about golf are: Problem, your solution, business model, underlying magic/technology.
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Previous, next, i suffer from something called Ménières disease—dont worry, you cannot get it from reading my blog. The symptoms of Ménières include hearing loss, tinnitus (a constant ringing sound and vertigo. There are many medical theories about its cause: too much salt, caffeine, or alcohol in ones diet, too much stress, and allergies. Thus, ive worked to book limit control all these factors. However, i have another theory. As a venture capitalist, i have to listen to hundreds of entrepreneurs pitch their companies. Most of these pitches are crap: sixty slides about a patent pending, first mover advantage, all we have to do is get 1 of the people in China to buy our product startup.