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Insect Detection Systems IDS-2020L Operator's Manual

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IDS-2020L Operator's Guide
IDS-2020L
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  • Page 1 IDS-2020L Operator’s Guide IDS-2020L Operator’s Guide...
  • Page 2 IDS-2020L Operator’s Guide IDS-2020L Operator’s Guide © Insect Detection Systems, Inc. 630 Brookfield Loop Lake Mary, FL 32746-3745 USA Phone: 407.620.0011 www.insectdetectionsystems.com Document Version 1.0...
  • Page 3 Notice The information contained in this manual is subject to change without notice. Insect Detection Systems, Inc. makes no warranty of any kind about this material, including the implied warranties of merchantability and fitness for a particular purpose. Insect Detection Systems, Inc. shall not be liable for...

  • Page 4: Table Of Contents

    ASTM standards on AE ........15 US code groups ........... 17 G E T T I N G S T A R T E D --------------------------------- 2 0 Unpacking your IDS-2020L ........21 Identifying the parts ..........21 Connectors ............21 Battery compartment ..........
  • Page 5 IDS-2020L Operator’s Guide HITS Mode (Tot.) ..........38 RMS Mode ............38 Instrument states and LCD screens ....... 39 Powering up ............39 Idle ............... 39 Acquiring data ............. 40 Setting up ............43 Sleep mode ............43 Setup ............... 44 Mode keypad selection ........
  • Page 6 IDS-2020L Operator’s Guide Clearing current data ........59 Clearing logger data ......... 59 Cancel .............. 60 Battery status............61 Invalid values ............61 S O F T W A R E O P E R A T I O N ----------------------- 6 4 USB drivers and link ..........
  • Page 7 Logging data to a file ........95 Acquiring data ............. 95 Uploading stored data ......... 97 Viewing logged data ..........97 IDS-2020L command set ........98 IDS-2020L data formats ........101 Data packet types .......... 101 Hits packet structure ........102 RMS packet structure ........

  • Page 8: General Information

    If you are eager to begin using your IDS-2020L, you may skip ahead to Section 2, Getting Started. Introduction The IDS-2020L is our third-generation hand-held instrument incorporating signal processing for pulsed and continuous acoustic emission (AE).
  • Page 9 IDS-2020L Operator’s Guide ▪ Transformer partial discharge detection ▪ Acoustic emission testing of ▪ CNG cylinders ▪ Metals ▪ Composites ▪ Rock and soil ▪ Wood products ▪ Sensor and cable check for AE field test crews Features include ▪ Battery (single 9 V) or AC operation ▪...

  • Page 10: Customer Support

    IDS-2020L Operator’s Guide ▪ Store 4,000 data points ▪ USB output for data logging to computer or uploading stored data ▪ Windows-based data logging software Please refer to Appendix A for complete specifications for the IDS-2020L. Customer support Customer support is available by sending e-mail to: Ray@insectdetectionsystems.com...

  • Page 11: Acoustic Emission

    IDS-2020L Operator’s Guide Acoustic emission Acoustic emission (AE), as defined by the ASTM E 610-82 standard, is: “The class of phenomena whereby transient elastic energy is generated by the rapid release of energy from a localized source or sources within a material, or the transient elastic wave(s) so generated.”...

  • Page 12: Emission Types And Waveforms

    IDS-2020L Operator’s Guide Emission types and waveforms There are four basic types of acoustic emission (see Figures 2 through 5). Figure 2 shows and example of continuous acoustic emission. This type is best measured as RMS and the next subsection discusses this in detail.
  • Page 13 “hit determination time.” The fixed hit determination time for the IDS-2020L is 1 milli-second. More advanced signal (hit) feature measurements, such as signal risetime, peak amplitude in dB, energy, signal strength, and average frequency, are made only in advanced, multichannel computer-based systems.
  • Page 14 IDS-2020L Operator’s Guide Figure 3. An example of burst-type acoustic emission. Figure 4. An example of “spikey” continuous noise. This type of emission can be found in: 1.fluid or gas flow systems with turbulence; 2.corona discharge from insulators and high tension lines.
  • Page 15 (count) to the last threshold crossing, as determined by a timeout period between threshold crossings. In the case of the IDS-2020L, that period is 1 milli-second (also known as “hit determination time”).

  • Page 16: Rms

    RMS response time. A rather fast response time is used in the IDS-2020L since, in the RMS mode, nearly 100 readings per second are taken and averaged in firmware.
  • Page 17 2020L. The RMS response is fast enough to track the energy envelope of the signal. The IDS-2020L reports the minimum, maximum, and average of the RMS measurements for each second. This provides the ability to monitor the ratio of RMS maximum to average, which is a useful indicator of the signal shape.

  • Page 18: Interaction Between Gain And Threshold

    80 dB total gain and a 1.0 V threshold. A combination of 60 dB gain and a 0.1 V threshold would give the same result (1000 x 100 microvolt = 0.1 V at the output). The threshold in the IDS-2020L is fixed at 1.0 V.

  • Page 19: Further Reading

    IDS-2020L Operator’s Guide Figure 8. RMS response to signal with a more continuous stream of burst-type signals, in this case from an airborne probe. The RMS response now remains at a higher level as the signals grow closer together. Further reading...
  • Page 20 IDS-2020L Operator’s Guide ▪ E749-96 Standard Practice for Acoustic Emission Monitoring During Continuous Welding ▪ E750-98 Standard Practice for Characterizing Acoustic Emission Instrumentation ▪ E751-96 Standard Practice for Acoustic Emission Monitoring During Resistance Spot- Welding ▪ E976-99 Standard Guide for Determining the...
  • Page 21 IDS-2020L Operator’s Guide ▪ E1316-99a Standard Terminology for Nondestructive Examinations ▪ E1419-96 Standard Test Method for Examination of Seamless, Gas- Filled, Pressure Vessels Using Acoustic Emission ▪ E1495-97 Standard Guide for Acousto- Ultrasonic Assessment of Composites, Laminates, and Bonded Joints ▪...

  • Page 22: Us Code Groups

    IDS-2020L Operator’s Guide US code groups ▪ ASTM E07 Committee on Nondestructive Inspection ASTM F18 Committee on Electrical Equipment Worker Safety ▪ ASME Boiler and Pressure Vessel Code ▪ ASNT/CARP (Reinforced Composites) ▪ American Association of Railroads—Railway Tankcar Committee...

  • Page 23: G E T T I N G S T A R T E

    ✓ Powering up ✓ Verifying the instrument is working Later sections of this Operator’s Guide provide further details regarding the use of your IDS-2020L. Section 3 describes manual operation and Section 4 discusses software operation of the instrument. Unpacking your IDS-2020L Unpack the accessories, packing material, and instrument from the case.

  • Page 24: Identifying The Parts

    IDS-2020L Operator’s Guide Make sure the following items were shipped. If any of these items are missing or damaged, please contact customer support. ▪ IDS-2020L instrument ▪ Instrument carrying case ▪ Power module (AC Adapter) ▪ Carrying strap ▪ USB cable (Type A to mini 5-pin Type B) ▪...
  • Page 25 IDS-2020L Operator’s Guide Note! The sensor connector is not designed for high impedance sensor outputs. Use only integral preamp sensors or sensors with a separate preamplifier. Audio () – Headphone minijack with 8-ohm output. This connector can be used with headphones, minidisk recorder, or amplified speakers.
  • Page 26 IDS-2020L Operator’s Guide A E D - 2 0 1 O O P E R A T O R ’ S G U I D E Figure 9. IDS-2020L: identifying the parts. Signal Output Input Port 4 x 16 LCD...

  • Page 27: Battery Compartment

    FTDI USB serial port drivers and followed the installation instructions supplied on the CD. The IDS-2020L detects the presence of the USB port when connected to a computer and consumes a small amount of battery power, even when the instrument is turned off. To conserve the battery, be sure to disconnect the USB cable from the instrument when not in use.
  • Page 28 IDS-2020L Operator’s Guide Figure 10. View of the battery compartment. The compartment is accessible from the backside of the instrument. Figure 11. View of the battery compartment housing one 9 V battery. Insert the back end of the battery first and then push down on the...

  • Page 29: Lcd Module

    IDS-2020L Operator’s Guide Note! ▪ The AC adapter will not charge the battery, even if you are using a rechargeable battery. ▪ Some rechargeable 9 V batteries will not fit in the compartment! LCD module The instrument has a 4-line by 16-character LCD module that may be backlit for improved viewing in dark locations.
  • Page 30 IDS-2020L Operator’s Guide Figure 12. IDS-2020L keypad layout. ON/Off – turns the instrument on or off. Clear – clears either the currently displayed data point, the last stored data point, or all stored data points. Please refer to Section 3, Clear keypad selection.
  • Page 31 Filter In/Out – Filter position control. When placed in the “Out” position, the full bandwidth of the instrument is available. For the IDS-2020L model, the frequency bandwidth is 1 kHz to 1200 kHz when unfiltered, and 30 kHz to 500 kHz when filtered (in the “In” position). For...

  • Page 32: Status Indicator

    IDS-2020L Operator’s Guide Recall – recalls stored data points for viewing on the LCD screen or changes the operational settings to those in a stored test setup. Please refer to Section 3, Recall keypad selection in both the Setup and Operations subsections.
  • Page 33 IDS-2020L Operator’s Guide Figure 13. Proper setup of the IDS-2020L with a preamplifier (Model 2460) and separate sensor. Figure 14. Proper setup of the IDS-2020L with an integral preamp sensor.

  • Page 34: Connecting The Ac Or Battery Power

    IDS-2020L Operator’s Guide Figure 15. The IDS-2020L with an SP-1L probe. Change three images Connecting the AC or battery power The instrument may be powered with either an AC converter or battery power. AC power: With the instrument turned off, insert the power module (AC adapter) connector into the 9 VDC connector on the instrument.

  • Page 35: Powering Up

    IDS-2020L Operator’s Guide Battery power: Remove the battery compartment cover and insert one new 9 V battery. Be sure to correctly align the positive and negative connectors. Insert the back end of the battery first and then push down on the connector end to seat the battery (Figures 10 and 11).

  • Page 36: Verifying The Instrument Is Working

    IDS-2020L Operator’s Guide disconnect the battery for more than 2-3 minutes (in the absence of AC power), or when you disconnect and reconnect the AC power cable while the instrument is turned on. The default settings are: ▪ Test mode: Hits, rate ▪...

  • Page 37: M A N U A L O P E R A T I O

    Operating modes There are three possible test modes for the IDS-2020L. A description of each mode follows. To select the mode to use, turn the instrument on, press the Mode key on...

  • Page 38: Hits Mode (Tot.)

    RMS values for that second are displayed. Instrument states and LCD screens The IDS-2020L instrument may be in any one of several states. These states and the appearance of the LCD screen in each state are described here. Powering up...

  • Page 39: Idle

    IDS-2020L Operator’s Guide The screen displays the instrument name, firmware version, company logo, and battery status. It remains visible for a few seconds while the instrument is performing its power-up self-test and then it is replaced by the Ready to Start screen (see below).
  • Page 40 IDS-2020L Operator’s Guide is in Hits mode, whether it is in Hits totalized or Hits rate mode: Hits:00254 Cnts:04128 Fltr Sen:09 RMS:0.06 • The number in the upper right corner is the test time countdown. The maximum countdown time is 255 seconds. Test time starts with the test period value minus one and counts down to 0.
  • Page 41 IDS-2020L Operator’s Guide • If the battery is low, the fourth line is replaced with “Batt LO”. The following screen is an example of what appears when the instrument is in RMS mode. Avg:0.34 Mx:0.89 Mn:0.04 Sen:09 ||||||| • “Avg” is the average, “Mx” is the maximum, and “Mn”...

  • Page 42: Setting Up

    “0” if the test period is set to continuous data acquisition. Setting up Many keys and screens are involved in setting up the IDS-2020L. These are described in detail in the next subsection. Sleep mode The IDS-2020L instrument has an auto-turn off feature to conserve battery power;...

  • Page 43: Setup

    Gain, Store, or Recall features. Setup Many keys and screens are involved in the setup of the IDS-2020L instrument. Most settings can only be changed while the instrument is idle, but some may be changed during an active test. This will be noted when appropriate in the following descriptions of the keypad selections.

  • Page 44: Mode Keypad Selection

    IDS-2020L Operator’s Guide Mode keypad selection The Mode key is used to select the operational mode for a test. With the instrument in the idle state, press the Mode key to view the selection menu: > HITS (Rate) HITS (Tot.) Use the ...

  • Page 45: Test Period

    IDS-2020L Operator’s Guide Test Period Select “Continuous” to set the instrument up for continuous data acquisition (no time-out). The next screen to appear is the Ready to Start screen. Select “Timed” to specify a fixed length test period. A test period is the duration of the test run in seconds, ranging from 0 to 255 seconds.

  • Page 46: Gain Keypad Selection

    IDS-2020L Operator’s Guide Note! ▪ The Setup key is only functional while the instrument is in the idle state. Gain keypad selection The Gain key is used to change the gain level. Changing the gain level in effect changes the total gain while maintaining the threshold at 1.00 V.

  • Page 47: Filter In/Out Keypad Selection

    The Store key is used to store test setups and data points. Only storage of test setups is described here. Storing data points is described later in this section in the Operations subsection. Up to four test setups may be stored in the IDS-2020L.

  • Page 48: Recall Keypad Selection

    IDS-2020L Operator’s Guide They can be recalled later by using the Recall key. The operational settings include test mode, test period, high and low RMS alarm levels, gain level, and filter in/out state. Initially, the four setups are factory programmed to the default settings described in the Powering up subsection of Section 2.

  • Page 49: Operations

    Ready to Start screen and using the Setup and Gain keys to view the remaining operational settings. Operations Once you have set up the IDS-2020L, there are several operations you may wish to perform. The operations available using the keypad are described here.

  • Page 50: Start/Stop Keypad Selection

    Setup subsection above for information on storing test setups. Up to 4000 data points can be stored in the IDS-2020L. Once stored, they can be viewed by using the Recall key. They may also be uploaded by a software program and stored to disk on a computer (see Section 4, Software Operation).
  • Page 51 If successful, the next screen you will see is the Ready to Start screen. If you selected “Next Sequence”, the IDS-2020L will be ready to save a sequence of data points. The next screen you will see is the Ready to Start screen. Now press the...

  • Page 52: Filling The Data Logger

    Filling the data logger The IDS-2020L can hold up to 4000 data points. If you attempt to add another data point once the data logger is full, you will see the following screen:...

  • Page 53: Recall Keypad Selection

    IDS-2020L Operator’s Guide Note! If a test run is in progress when the Data Logger FULL screen appears, the test will be halted. Recall keypad selection The Recall key is used to recall stored test setups and data points. Only recalling stored data points is described here.

  • Page 54: Point Number

    IDS-2020L Operator’s Guide Point number Each point within a data set has a point number. Single points, which are self-contained in a data set, always have a point number of zero (0). Sequence points in a data set collected within one test period begin with a point number equal to the test period value minus one.
  • Page 55 IDS-2020L Operator’s Guide To initiate the recalling of stored data, press the Recall key. The following screen will appear: > Data Setup Cancel The pointer (>) is already pointing at “Data”, so simply press the Enter/Next key to take you to the next screen.
  • Page 56 IDS-2020L Operator’s Guide The following screen is an example of a stored data point collected in a sequence of points while the instrument was in RMS mode. The test period was set to 5 seconds and this screen shows the first in the series of 5 points: Avg:0.22...

  • Page 57: Traversing The Stored Data Points

    IDS-2020L Operator’s Guide The point number in the upper right-hand corner is “3”, one less than the point number of the previous point. The data point is type B (sequence point) and the data set number is the same as for the previous point because this point is part of the same sequence.

  • Page 58: Clearing Current Data

    IDS-2020L Operator’s Guide The following screen will appear after the Clear key is pressed: > Current Data Logger Data Cancel Use the  and  keys to move the pointer (>) between the two choices. Press the Enter/Next key to make the desired selection.

  • Page 59: Cancel

    IDS-2020L Operator’s Guide To clear the last data set stored in the data logger, use the  key to move the pointer to the “Last Set” line and then press the Enter/Next key. The next screen you will see is the Ready to Start screen. This operation removes all data points in the newest data set.

  • Page 60: Invalid Values

    2 minutes for the same reason. Invalid values The maximum value that the IDS-2020L can store for hits and counts is 65,535. When this value appears, it is likely that the hits or counts exceed full...

  • Page 61: S O F T W A R E O P E R A T I O

    USB drivers and link To operate the IDS-2020L using software, a USB link between the instrument and a computer must be established. During the process of installing the drivers,...

  • Page 62: Windows Host Program

    Windows program that you are using. Windows host program The Acoustic Emission Detector (AED) program is a Windows program designed specifically for use with the IDS-2020L. If you purchased this optional program, the installation CD will be included in your shipment. Features...

  • Page 63: Menus And Toolbars

    The AED program also allows you to work with data points you have collected manually and stored in the IDS-2020L instrument’s memory. You can place single data points in a report template and then annotate and print the report. Sequence data points can be plotted and printed.

  • Page 64: Data Logger And Message Windows

    IDS-2020L Operator’s Guide mode, and alarm levels may be set up with user-friendly input windows. You may save commonly used setups in files and then restore the settings at a later time. Data logger and message windows The AED program logs data in an easily readable format and displays it on the screen (upper window in Figures 16 and 17).
  • Page 65 IDS-2020L Operator’s Guide Figure 17. AED program sampling and storing RMS data every 5 seconds. Two types of data collection modes are available when using the AED program: Hits Mode (Figure 16) and RMS Mode (Figure 17). Data samples are acquired by the IDS- 2020L at a rate of one sample per second.

  • Page 66: Chart Windows

    IDS-2020L Operator’s Guide during the sample interval. The RMS values are averaged over that time interval. In addition, the total hits and counts from the beginning of the test run are displayed. Chart windows The AED software plots time trend data in graphs show in chart windows.
  • Page 67 IDS-2020L Operator’s Guide Figure 19. An example of the RMS Trend chart window displaying plots of maximum, minimum, and average RMS versus time in the upper graph and RMS ratios versus time in the lower graph. When in RMS mode, the RMS Trend chart displays...

  • Page 68: Data Files

    IDS-2020L Operator’s Guide Graphs can pan to reveal the data points no longer visible on the graph as it scrolls. You can choose to auto scale the Y-axis or set the scale manually, and choose between log and linear scaling.
  • Page 69 Microsoft Excel. Figure 21. An example of a CSV file containing data uploaded from the IDS-2020L to the AED program, after opening it in Microsoft Excel. The data points were stored in the IDS-2020L data logger during manual operation of the instrument.

  • Page 70: Post-Processing

    IDS-2020L Operator’s Guide The IDS-2020L can store up to 4000 data points in its own data logger memory. The AED program allows you to upload the stored data and save it to a CSV file. Figure 21 shows such a file after opening it in Excel. Column headings identify the data.
  • Page 71 IDS-2020L Operator’s Guide Figure 22. An example of the AED report template with 5 single data points uploaded from the IDS-2020L instrument’s memory. Annotations have been added by the operator. Initially, several the fields in the template will be blank and can be filled in by you.

  • Page 72: Installation

    IDS-2020L Operator’s Guide The fully annotated report can be saved to a tab- delimited file for future review. You can open that file with the AED program or with a word processing or spreadsheet program. You can also print the report from the template window.
  • Page 73 As part of this process, and at the appropriate time according to the supplied instructions , you will connect the IDS-2020L to an available USB port. Please make note of the COM port assigned to the USB port, e.g. “USB Serial Port (COM4)”.

  • Page 74: User's Guide

    One reason for this requirement is that the keypad of the IDS-2020L is locked while the instrument is under the control of the AED program. ▪ If the instrument is idle, the instrument will go into sleep mode within 3 minutes and the keypad will be freed.

  • Page 75: Hyperterminal Program

    IDS-2020L Operator’s Guide 3. Run the AED program. Whenever a button with a "?" appears in the upper right-hand corner of a window, first click on the "?" button and then click on the item for which you are seeking help.

  • Page 76: S P E C I F I C A T I O N

    IDS-2020L Operator’s Guide SECTION Appendix Specifications Physical ▪ Maximum dimensions 8.5" L x 4.3" W x 1.5" H (215 x 108 x 38 mm) ▪ Weight 14 oz (0.4 kg) ▪ Splash-proof, injection molded plastic “T” case, electrostatic shielded Display ▪...

  • Page 77: Indicators

    IDS-2020L Operator’s Guide per second (DC volts), Test Time (countdown), Preamp Current (mA), Test Mode, Filter In/Out, and bar graph of instantaneous RMS. Indicators ▪ Activity LED (red) flashes on threshold exceed Connectors ▪ Sensor input, coax BNC ▪ Signal out, coax BNC ▪...

  • Page 78: Measurements

    IDS-2020L Operator’s Guide ▪ Power in 9 V DC, 500 mA ▪ Battery single 9 V (typical 800 mA - hr) ▪ Current draw, sleep ~20 A, idle (on) ~10 mA, operating ~100 mA; w/backlight +50 mA; w/audio + 25 mA Measurements ▪...

  • Page 79: A C C E S S O R I E

    IDS-2020L Operator’s Guide Accessories Appendix Sensors ▪ Integral preamp sensors (60, 150, 400 kHz) (Figure 23) ▪ Differential sensors (375 kHz) (Figure 23) ▪ Miniature sensors (400-600 kHz) (Figure 24) Probes ▪ Airborne probe (40 kHz) (Figure 25) ▪ Contact probes for leak detection and machinery health monitoring (40 dB preamp) (Figure 26) Figure 23.
  • Page 80 IDS-2020L Operator’s Guide Figure 24. Model MS600 miniature sensor (400-600 kHz). Figure 25. Model ABP-2 airborne probe (40 kHz, 40 dB integral preamp). Figure 26. Model SP-1 handheld sensor with magnet and waveguide attachments (available in low and high frequency versions).

  • Page 81: Preamps

    IDS-2020L Operator’s Guide Preamps ▪ Line drive preamp (20 dB) ▪ Switchable 20/40/60 dB preamp (Figures 27 and 28) Magnetic Holder ▪ Model MAG-1 magnetic holder for integral preamp sensors (i150 and i400 sensors) (Figure 29) Figure 27. Model 2460 DE preamp. Dual channel (20, 40 or 60 dB).
  • Page 82 IDS-2020L Operator’s Guide Figure 28. Model 2460 single channel preamp (20, 40 or 60 dB). Figure 29. Model MAG-1 magnetic holder for integral preamp sensors (i150 and i400 sensors). Change logos on above...
  • Page 83 IDS-2020L Operator’s Guide...

  • Page 84: Starting Hyperterminal

    When you run the default HyperTerminal program, you will be presented with a Connection Description window. Enter the name you would like to use to recall this setup later, e.g. IDS-2020L. Select any icon you prefer and then click the OK button.

  • Page 85: Com Port

    To save the configuration, click Save on the File menu. The configuration will be saved as a session file, using the name you entered in the Connection Description window and with a file extension of “.ht”, e.g. IDS-2020L.ht. The next time you...

  • Page 86: Logging Data To A File

    Logging data to a file To log data acquired by the IDS-2020L to a file, click Capture Text on the Transfer menu. Then enter the name of the file you wish to use. Using a file extension of “.txt”...
  • Page 87 To stop the test run, issue the halt command by typing “h” (lower case) in the text window. Please refer to the subsection called IDS-2020L command set for a complete list of commands you can send to the instrument. Commands include those to start and stop data acquisition;...

  • Page 88: Uploading Stored Data

    USB link to HyperTerminal. The format of acquired data is described in detail in the subsection called IDS-2020L Data Formats. Uploading stored data First open communications between the IDS-2020L and HyperTerminal by typing “o” (lower case) in the HyperTerminal text window.
  • Page 89 7. Specify the column data format for each column in Step 3 of the Text Import Wizard. The “General” format will suffice. 8. Click the Finish key. Please refer to the subsection called IDS-2020L data formats, for a detailed description of the format of acquired data.

  • Page 90: Ids-2020L Command Set

    IDS-2020L Operator’s Guide IDS-2020L command set The commands to which the IDS-2020L responds are specified in the following table. Commands are issued as one character. When the character is a letter, the case of the letter is significant. Character Case...
  • Page 91 Clears memory for stored data. Initiates an upload of stored data. Sends an inquiry command. The instrument returns status (includes mode), variable gain, fixed gain, threshold, instrument name, firmware version, and filter in/out. See the subsection on IDS-2020L data formats.

  • Page 92: Ids-2020L Data Formats

    IDS-2020L data formats There are several different types of data sets sent out by the IDS-2020L on the USB link. All the multi- character data packets consist of a series of ASCII characters, followed by a carriage return (CR) and line feed (LF) character.

  • Page 93: Hits Packet Structure

    IDS-2020L Operator’s Guide Hits packet structure Both Hits, totalized and Hits, rate mode data have the same format. The format of the packet string is: I TTT R.RR A HHHHH CCCCC B SS FG 01234567890123456789012345678901 where = packet ID = down count of test period R.RR = RMS...

  • Page 94: Rms Packet Structure

    IDS-2020L Operator’s Guide RMS packet structure The format of the packet string is: I TTT R.RR A M.IN M.AX B SS FG 0123456789012345678901234567890123 where = packet ID = down count of test period R.RR = average RMS = alarm status: H for high, L for low, and space for OK M.IN = minimum RMS...

  • Page 95: Inquiry Packet Structure

    IDS-2020L Operator’s Guide Inquiry packet structure The inquiry packet is sent in response to the inquiry command (?). The format of the packet string is: I SS GG TT N-N V-V F 012345678901... where = packet ID = status, in hexadecimal, which contains mode in...

  • Page 96: Upload Packet Structure

    IDS-2020L Operator’s Guide Bits Description 0, 1 mode, where 0 = hits, totalized; 1 = RMS 2 = hits, rate hits in progress flag 20 dB fixed gain flag keypad flag for gain changes; always 0 when under host control keypad flag for threshold changes;...
  • Page 97 IDS-2020L Operator’s Guide = last index (basically a pointer to the previous data set) = status, in hexadecimal, which contains mode in the first 2 bits HHHHH = hits CCCCC = counts = RMS R.RR = variable gain, in hexadecimal and dB...

  • Page 98: G L O S S A R

    IDS-2020L Operator’s Guide R.RR = average RMS = variable gain, in hexadecimal and dB = threshold, in hexadecimal and units / volt (250 units / 5 volts) and the string of digits below the packet definition shows the spacing of the data items.
  • Page 99 IDS-2020L Operator’s Guide AE activity – the presence of acoustic emission during a test. burst emission – a qualitative description of the discrete signal related to an individual emission event occurring within the material. channel – an assembly of a sensor, preamplifier or...
  • Page 100 IDS-2020L Operator’s Guide event – a local material change giving rise to acoustic emission. Sometimes this term is used synonymously with “hit”, but “hit” is the preferred term. hit – detection and measurement of an AE signal on a channel.

  • Page 101: I N D E

    1, 2, 4, 6, 7, 8, 29 burst, 1, 7, 8 continuous, 1, 7 Acoustic Emission Detector, 66, 76, 79 AED host program, 66, 67 IDS-2020L data formats, 100, 101 alarms, 38, 45, 46, 49, 102, 103 applications, 1, 3 audio, 2, 22 auto-turn off, 43...
  • Page 102 IDS-2020L Operator’s Guide data acquisition, 26, 35, 40, 44, 51, 61, 80, 93, 96 data files, 72 data logger, 53, 54, 59, 60 Data Logger FULL, 55 data packets, 99, 101 data points clearing, 59 recalling, 55, 56 storing, 49, 51, 52...
  • Page 103 IDS-2020L Operator’s Guide hits, 2, 6, 37, 38, 62, 67, 101, 102, 104, 105 Hits, 40, 57 hits packet, 102 HyperTerminal program, 80, 94, 97 logging data, 95, 97 setting up, 94 uploading stored data, 97 idle state, 39, 43, 44, 45, 47, 51, 60...
  • Page 104 IDS-2020L Operator’s Guide ON/Off key, 26, 34, 40, 43 point number, 56, 57, 58, 105, 106 post-processing, 74 power module, 21 powering up, 20, 34, 35, 39, 61 preamplifier, 2, 4, 21, 30, 41, 42 Recall key, 44, 49, 50, 52, 55, 56...
  • Page 105 IDS-2020L Operator’s Guide AE activity, 29 Store key, 44, 49, 50, 51, 52, 55, 101 support, customer, 1, 3, 21 test period, 34, 40, 42, 45, 46, 49, 51, 54, 56, 58, 67, 96, 100, 102, 103, 105, 106 test setups...

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