Synchronized Tests

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DataTrapII Operations Guide for Synchronized Tests Edition 1.1 Manufactured By: MREL Group of Companies Limited

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synchronous test

Transcript of Synchronized Tests

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DataTrapII Operations Guide for Synchronized Tests

Edition 1.1

Manufactured By: MREL Group of Companies Limited

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The MREL logo is a registered trademark of Mining Resource Engineering Limited. The DataTrapII logo is a registered trademark of MREL Specialty Explosive Products Limited. All other brand and product names are trademarks or registered trademarks of their respective companies. © Copyright 2007, MREL Specialty Explosive Products Limited. This Operations Guide supersedes any earlier editions. All Rights Reserved. Reproduction or adaptation of any part of this documentation without written permission of the Copyright owner is unlawful.

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TABLE OF CONTENTS CHAPTER 1: INTRODUCTION 1-1

1.1 Ensuring that Necessary Equipment is Present 1-1 1.2 Summary of the Test Process 1-1

CHAPTER 2: HARDWARE SETUP 2-1 2.1 Menu Setup 2-2 2.2 Cable Setup 2-2 2.3 Menu Start 2-3

CHAPTER 3: DATA RETRIEVAL AND ANALYSIS 3-1

3.1 Initial Downloading 3-1 3.2.1 Linking files – choosing Master 3-1 3.2.2 Linking files – choosing 1st Slave 3-2 3.2.3 Linking files – choosing Slave #2 3-2 3.3 Opening the .SYNCD File 3-3 3.4 Definition of Time=0 3-3

CHAPTER 4: PROGRAMMING THE DATATRAPII 4-1

4.1 Programming for a Synchronized Test 4-2 4.2.1 Programming – Trigger only from other DataTrapIIs 4-2 4.2.2 Programming – External Trigger 4-2 4.2.3 Programming – Internal Trigger 4-2 4.2.4 Programming – Sample Speed 4-2

CHAPTER 5: CONTACT INFORMATION 5-1 5.1 Contacting MREL 5-1

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1.1 ENSURING THAT NECCESSARY EQUIPMENT IS PRESENT The use of this hardware is covered in Chapter 2. 1. At least 2 DataTrapII units. One DataTrapII unit will be the master unit, the others will be slave units. 2. One Synchronization cable for each slave unit. If the operator will use 2 units, 1 cable is required. If the

operator will use 3 units, 2 cables are required, etc.

1.2 SUMMARY OF THE TEST PROCESS 1. Using the menu buttons on the DataTrapII, set one unit to be “Master“ and the others to be “Slave”. 2. Use the DataTrapII setup software to ensure that all channels are set up to be triggered by the synchronization cable. (They can also be setup to trigger later but still with synchronized time). Set sample speed to 5 MHz or less. 3. Connect the synchronization cable(s). 4. Press Next Test on each DataTrapII. Confirm from the menu that they are synchronized, then press Start on each DataTrapII. They are now ready to be triggered. 5. Download the data from all DataTrapIIs to the same directory (“.dt2” files). 6. Once all data has been downloaded, create group files (“.syncd” files) for the data. This is done by picking one of the “master” files, then choosing its “slave” file(s). This creates a “.syncd” file. 7. Open the “.syncd” file. It will now display data from all channels of all tests in the synchronized group.

CHAPTER 1: INTRODUCTION CHAPTER 1: INTRODUCTION

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2.1 MENU SETUP The DataTrapII units are setup form synchronized data collection using the pushbutton menu on the metal faceplate. This is started by turning on the DataTrapII and pressing the ↓ button to start Services. Normally, this is below the word Services on the menu, but it may have turned off to save power. After pressing this, the menu shows the 1st service Erase Last Test. Press the ↓ button to choose other services until the option Synchronization is shown. Press the Enter button to choose that option. Press the ↓ button to change Synchronization mode from Off to Slave or Master. Press the Enter button to choose that mode. Press Esc after pressing Enter to go up one level in the menu. Keep pressing Esc to get back to the original menu state that showed: “DataTrapII Services Config” Repeat this procedure for the other DataTrapII(s) except that Slave should be chosen.

Note: The operator can press Esc instead of pressing Enter to make no choice.

CHAPTER 2: HARDWARE SETUP

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2.2 CABLE SETUP

The cables are connected in the following way, with power either on or off. 1. Connect the Sync Out connector to the lower connector of the Master DataTrapII. 2. Connect the Sync In connector to the upper connector of the 1st Slave DataTrapII. If this DataTrapII is on and in Sync-Slave mode, it will beep and briefly show Synced on the menu. If it is turned on later, it will show Synced briefly after powering on (if the Master DataTrapII has also been powered on). If the Master unit is turned on after the slave unit, then it will briefly show Synced then. 3. If there are more units, connect the Sync In from another cable to the 1st Slave and connect the Sync Out connector to the 2nd Slave.

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2.3 MENU START Before conducting a test using synchronization, connect the cables as mentioned in section 2.2 and then do the following: 1. Power on each DataTrapII. 2. Press Next Test on each DataTrapII. If the cables have been correctly connected, the master unit will show a three-line symbol as shown below: The slave unit(s) will have a two-line symbol as shown below: If the cables are not connected or one of the units has not been set correctly by the menu, the two-line symbol will have a slash through it as shown below: 3. Once it has been confirmed that all symbols show a correct connection and setup, press Start on all units. It is now ready to trigger and collect data.

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3.1 INITIAL DOWNLOADING With the software installed on the computer, connect the DataTrapII to the computer as described in the DataTrapII Operations manual. Next, start the software by going to the start menu and following the menus through Programs\DataTrapII. The menu that is on the screen should appear as shown in the figure to the right:

• Click on the “Retrieve Data” button and the next menu will appear. • Select or create a directory where the data from all the DataTrapII

units will be downloaded, then download them. 3.2.1 LINKING FILES – CHOOSING MASTER Once all files have been downloaded, click on Retrieve Data, go to the directory where the data was downloaded, and click on Link Synchronized Files. The operator will now be presented with a list of file(s) that have been downloaded from a “Master” unit and have not yet been linked to other files. For the common case of an operator who downloads after every test, there will only be one file to choose from.

CHAPTER 3: DATA RETRIEVAL AND ANALYSIS

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3.2.2 LINKING FILES – CHOOSING 1ST SLAVE Once the master file has been chosen, the operator sees a list of files that were downloaded from a unit that was set as “slave” and also connected 1st in sequence after the “master” unit. It also uses the internal calendar/clock of each unit to show the difference between the times when the Start button was pressed on each unit. (The date/time can be viewed by pressing the Info button on the DataTrapII) Typically, this will be 0-60 seconds for data sets collected at the same time and will be much smaller than other possible files. If a DataTrapII has been used with a computer that is set for a different time zone, then time stamps will be farther apart. 3.2.3 LINKING FILES CHOOSING SLAVE #2, #3, … After the slave #1 file has been chosen, if there are any files from later in sequence, they will be presented in a similar list. The operator can choose one of them or click on the Done button to finalize the .syncd file. When there are no more files from a higher sequenced DataTrapII, the .syncd file is created.

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3.3 OPENING THE “.SYNCD” FILE To open the group of files, click on Analyze Data, then choose the appropriate “.syncd” file. Graphs from all files are then opened. Note that the first few letters of the names of the graphs (“SYN[1], SYN[2]”) show which data set they are from. . 3.4 DEFINITION OF “TIME=0” All the graphs drawn are synchronized to a common “time=0”. This is normally set as the trigger time of channel 1 on the master unit. If channel 1 was not triggered, it is the Stop time for channel 1 on the master unit. Events at the same time from different data sets were recorded at the same time.

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4.1 PROGRAMMING FOR A SYNCHRONIZED TEST The trigger event from synchronized DataTrapIIs is equivalent to another form of external trigger. If the operator wants all DataTrapIIs to trigger simultaneously, then all active channels must be set to allow external trigger. They can also be set to be triggered from an internal trigger. The usual practice for a test with internal triggers is to set the DataTrapII to “External Trigger - Make” and leave the external trigger input open. In this way, an actual “Make” event will never occur, but the DataTrapII will receive a trigger from other DataTrapIIs. If it fits the plan for the test, the DataTrapII can be setup to wait for a trigger event just on that DataTrapII by turning off all modes of external trigger. The time shown for the resulting data will still be time synchronized with the other DataTrapIIs. 4.2.1 PROGRAMMING – TRIGGER ONLY FROM OTHER DATATRAPIIs To setup a DataTrapII so that it can only trigger from another DataTrapII triggering, program it for “External Trigger – Make” with internal trigger turned off and leave the external trigger BNC connector in an open circuit state. Note that the chained cover for the BNC connector for Trigger-In will not “make” the circuit, so it can remain tightly closed over that connector. 4.2.2 PROGRAMMING – EXTERNAL TRIGGER If the plan for the test requires an external trigger, then the operator can choose any of the external trigger choices given when programming the DataTrapII. It will be triggered by the external trigger or a trigger event on any other synchronized DataTrapII. Only one of the DataTrapIIs will be connected to the actual external trigger. The others should be set to External Trigger – Make with the connector left tightly closed. 4.2.3 PROGRAMMING – INTERNAL TRIGGER If the plan for the test requires an internal trigger, then the operator should first turn on External Trigger – Make. Next, setup the internal trigger and apply it. This will result in a prompt to confirm this choice. The chained cover for the external trigger input should be left tightly closed. 4.2.3 PROGRAMMING – SAMPLE SPEED The DataTrapIIs must be set to a sample speed of 5 MHz or less to be synchronized.

CHAPTER 4: PROGRAMMING THE DATATRAPII

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5.1 CONTACTING MREL MREL Group of Companies Limited Blasting Instrumentation Team 1555 Sydenham Road Kingston, Ontario K7L 4V4 Canada Toll Free Canada/USA: 1-877-544-MREL Tel: +1-613-545-0466 Fax: +1-613-542-8029 Email: [email protected] Web site: www.mrel.com

CHAPTER 5: CONTACT INFORMATION