Wireless Telemetry Fast Strain Gauge Acquisition
Contents
1. b 37 5 mm gt E E E e e o O e B S 29 8 mm i 02 1 mm E E y 2 5g s 4 80 mm 32 12 mm a There are two holes available for mounting The one nearest the connection pads can accept an M2 screw or American equivalent 40 80 Important Note DO NOT USE 2 screw size Note that the mounting hole is connected directly to the Battery ground of the acquisition module The mounting hole near the chip antenna cannot accept metal mounting hardware The connection holes are on a 1 9mm pitch and are a diameter of 1mm 21 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Antenna Internal Chip Antenna There must be no metal objects within 7mm diagram below of the antennas long edge and 20mm from the short edges See N E E o N v b A N A 1 i 7 mm J gt y E E S N x pe Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 22 External Antennas The external antennas come in two styles The flat PCB antenna can be mounted inside a plastic housing or to the outside of a metal housing The PCB requires 3mm Clearance on all edges this also applies t2. 3V Supply OV Supply Connect to a 3 Volt power supply or batteries WARNING This module is not reverse polarity protected WARNING The maximum voltage is 3 6V Input Connections Strain Gauge Strain gauge connection is 4 wire as follows SHLD Lo EXC o SIG Lo SIG O EXC The resistance of the strain gauge can be between 85 and 5000 Ohms The T24 SAf can support up to 4 3500hm strain gauges bridges attached in parallel At the expense of reduced battery life The cable lengths between the T24 SAf and the gauges should be kept below 3 meters and generally as short as possible As the measurement is 4 wire the longer the cable the more inaccurate the measurement from the factory mV V calibration will be due to voltage drops in the cable The cable should be of good quality and shielded at either the T24 SAf SHLD point and should not be connected to the metal housing of the load cell The strain gauge measurement is bi directional i e tension amp compression Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 2 Configuration This section explains how to install software and configure the module Please note that you will need the T24 Toolkit software and a T24 BS base s
3. di T24 SAf 2 Fast Strain Gauge Acquisition Module User Manual www mantracourt co uk ME mantracourt Wireless Telemetry Range 2 4Ghz 1 Introduction Overview i esee rea ooo dare ae s CESOS EEEE EEEE sheds sudcseswedss a tE ESE SETS 2 CONNECtIONS ELTE 2 PO Wii ese rest EEEE EA acide ra meet uite d ENESA Wie te pude EE Um EERE UL Ure PME eset elu viet Mte v mee qeu 2 Input Connections s 4 ove neo ee we cad exo ve ee e n a ons D Ere eve ens VE Edere tend CULO oPe ae oo ta tu adibeeetaone ade 2 Strain Wer P 2 earl 3 Installation ida ir DILE e 3 T24 TO o o quie eue de 3 T24 BS Base Station iss em 3 NARI 4 General Pages c EU EI ese n POCHE e o 4 Setup Base Station Communications eeeeeesseeseeeeeeeeee eee e eI e hehehe enhn 4 HOMO E A A A a e a A ai 5 Analyser rd 6 Data Provider Monitor 2 toes a a EEE RA EER EE EE e 7 INFORMATION e SC ELE 8 Battery Lite sie m 9 Battery and Radio Levels cos 1 sccusceseces ct tan ceded bende egies abe tee edhe ida neh lis su cp EO NP TERT 10 Battery and Radio Levels Advanced SettingS ccccccceeececeeeeeeeeeeeeeneeeeeeeneeeeeeesseeeeeesaeeeees 11 Channe l and Encryption a 12 SAVE AN RESTOFO coin e ES A A AA A EESE Ae ate sae eee PER 13 Data Provider Monitor neto id it id eV
4. 38 Le D ft Because the data packet from this device does not just carry a single value this page an example of decoding the 10 values from each packet and displays them Trend 200 sec Values nV V 1 909 5 928 9 890 2 922 6 947 10 909 3 935 7 922 4 897 8 941 Delta 227 The data packets arrive at a rate of 200 per second but this display only updates 3 times per second If you select logging below the data will be logged to a CSV file at the rate at which it arrives Because the standard data provider monitor does not decode correctly the multiple data packets from as T24 SAf this special page provides a trend chart and a view of all 10 readings contained in each packet It also shows a delta value Max min and allows you to log the data to a file Items you can change Reset Clicking here will reset the Delta display to zero Pause Stop the module transmitting data Continue Continue with data transmission Start Logging Allows you to select a filename and starts to log the data to the selected file The format of the file is CSV and the columns are Elapsed Value lt carriage Return gt Where Elapsed is a timestamp counter provided by the T24 SAf Each unit represents 500uS and the number will reset to zero every 32 768 seconds This timestamp aids in spotting lapses in data and allows graphing data even with dropped packets Value is the value logged The same button is used to stop the logging View Last L
5. Local signa received at the Base Station Link Quality Indicator A summary indication of the quality of the radio link Remote signal received at the acquisition module LQI 100 F Battery Voltage 2 18V Low Battery Level Here you can see the voltage of the battery and the radio signal levels at the base station and the remote acquisition module This simple view gives an LQI value which stands for Link Quality Indicator This value will range from 0 to 100 and within this band you should still achieve communications As the level drops towards zero communications may become intermittent but still achievable You can set the level at which the acquisition module reports a low battery If the battery voltage is below the Low Battery Level the bar will be coloured orange Items you can change Low Battery Level Click this item to set the battery low level Clicking the Advanced button will give more detailed information on the RSSI and CV levels of the received radio packets Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 10 Battery and Radio Levels Advanced Settings T24 Toolkit LQI amp Battery EY 2 0 2f Cm 388 0 4 Help Signal Strength LOCal signa received at the Base station RSSI 055 CV 107 LQI 087 By E Link Quality Indicator A summary Radio Strength Indicator The Correlation Value Essentially the indication of the quality of the signal strength in dB
6. ai rer 24 TZA SA I C vas tbe whan mE 24 P ohIVLige C E 24 PEE 24 dispen 25 Induistry Canada cie A A EE toned addu re DEVE EE EUNT 25 OEM Reseller Marking and Documentation Requirements cceeeeeeeeee esee eene eene hene hene tnos 26 decp EE 26 TIE 26 CE Lees NN 26 Declaration OF Conformity ee eee ee eer tst tdt os waives EEEE SENNEN EATS 4a cio I UT ERES E P EE RUPERTS 27 Worldwide Regional Approvals cceeeeeeeee esee ee eene neeehhh hehehe heres nete ers eerte 28 Important Notes olor sce seare e asia ri o cse ed gas Venton vested higas epe seg er tug y 28 Warranty esotas anaa a yu lv e cec ee eipoefteserPi pucr e zesss ca ores si a aaa eines Mose us 28 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Introduction Overview For high speed applications the T24 SAf provides measurements at 2KHz with 200 packets per second containing 10 x 32 bit values representing nano volts volt The T24 SAf will usually be used in conjunction with an analog output module or for supplying data to a computer via a base station Please note that these modules are not suitable for use with T24 handheld displays Connections You will require a 3 Volt dc supply for the acquisition module which may be 2 X AA alkaline batteries Power Attach power supply wiring to the module as shown below
7. device and set the channel and key as required Next using the pair function in the handheld connect to each acquisition device to change its settings to match those of the handheld Connect to one device and change its channel and key as required Click the Home button and then re pair to that device The base station will now match its settings to that device Return to this page and click the Advanced button From here you will be able to quickly change the settings of multiple devices to match the base station just by pairing with each one in turn Advanced Here you can change the channel and encryption key for the acquisition module device Simply pair to the T24 SAf and change its channel and key Note that some devices such as the T24 AO1 analog output module will allow pairing to an acquisition module When pairing it will alter the T24 SAf settings to match those of the analog output module NOTE Early acquisition module do not yet utilise the encryption keys so these should be left at all zeros Items you can change Channel Select a channel between 1 and 16 The default is channel 1 You can use the Spectrum Analyser mode to determine a good clean channel to use NOTE Channel 16 is used to negotiate pairing so avoid this channel if possible Encryption Key Only devices with identical encryption keys can communicate You can isolate groups of devices on the same channel or just use the key to ensure the data cannot be read
8. same channel and had the same last 4 characters in their ID 1 in 65 535 chances you may want to change the data Tag of one of the devices and perform pairing again with the associated T24 module Shunt Cal Allows turning on or off the application of a shunt cal resistor to the bridge input You must remember to turn this off before exiting the Toolkit software nV V Shows the output value so the effect of the Shunt Cal can be seen 15 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Installation Overview Radio performance at microwave wavelengths is very dependent upon the operating environment any structure within the operating region of the radios will give rise to three effects Obscuration Obscuration will result in reduced range and occurs when an obstruction masks the line of sight between radios Aberrations to the horizontal and vertical space patterns Distortion of these patterns may occur if structures or objects are placed in the near or intermediate field of the antenna The effect will be to distort the coverage patterns adversely affecting range and link quality Reflection Any object placed in line of sight of the transmit antenna will result in signals arriving at the receiver by an indirect path Degradation of performance due to reflection multipath effects appears as reduced range or poor link quality Any of the above will cause poor RSSI figures an increase in the
9. you may want to use The above charts show the traffic from a Wi Fi network and it can be seen to be operating over channels 6 to 9 and it would be best though not essential to avoid using these channels Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 6 Data Provider Monitor T24 Toolkit Data Provider Monitor S llt lt gt qa Data Tag Total Per sec LQI Value 0 0218671 0 0152698 0 0172869 0 0130830 Select the devices you wish to log from the above list be checking them Pressing the Start Logging button will allow you to select a filename to log the data to View Last Log Start Logging NOTE Prior to version 1 1 91 of the T24 Toolkit the value shown for a T24 SAf will look like random characters because the data packet from the T24 SAf contains 10 values not just the normal single value Version 1 1 91 and later will show the correct value but will only log at 200Hz To log at 2KHz please pair to the module and use the specific Data Provider Monitor page shown later in this manual T24 acquisition devices normally operate in low power mode and periodically transmit Data Provider packets This page shows all detected Data Provider packets which may be useful for checking that a device is operational NOTE When the toolkit connects to a device to enable configuration it will usually inhibit the transmission of Data Provider packets The Start Logging button will as
10. For antenna T24 ANTA and T24 ANTB FCC ID VHARAD24 This device complies with Part 15c of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation CAUTION If the device is changed or modified without permission from Mantracourt Electronics Ltd the user may void his or her authority to operate the equipment Industry Canada Industry Industrie E Canada Canada Models i and e for internal and external antenna variants For antenna T24 ANTA and T24 ANTB IC 7224A RAD24 This apparatus complies with RSS 210 Low power Licence exempt Radiocommunication Devices All Frequency Bands Category Equipment RSS 25 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual OEM Reseller Marking and Documentation Requirements FCC The Original Equipment Manufacturer OEM must ensure that FCC labelling requirements are met This includes a clearly visible label on the outside of the final product enclosure that displays the contents as shown Contains FCC ID VHARAD24 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operati
11. Height Ga e Weight 46g e Charge Time 4 5 Hours 466mA Do A X e Battery life 6 5 days UBC 581730 e Rated Capacity 250mAh e Dimensions 18 x 31 5 x 5 8 mm e Weight 6 5g e Charge Time 2 Hours E 133mA 00 e Battery life 18 hours ed Note Battery life is calculated with a T24 SAf running for 2 hours out of every 8 hours to a 1kO bridge 19 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Capacitor Module T24 BC2 This is used for batteries which have an internal resistance of greater than 150mOhms overcoming voltage drops during high current phases of the low power mode cycle This problem becomes apparent when attempting to communicate with high peak current acquisition modules such as a T24 SAf using the T24 Toolkit or power cycling when the battery is near the end of its life In normal operation Low power mode with an analog output module or the T24 SAf is connected to an uninterrupted battery this module is generally not required Using lower impedance strain gauges or multiple parallel strain gauges exacerbates this problem Consult Sales for details Alternatively fit an electrolytic capacitor across battery of 2000uF or greater This capacitor should be of low ESR 70mOhms Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 20 Mounting Mechanical size
12. SIGNED amp MANUFACTURED IN THE UK Code No 517 922 Issue 1 2 19 06 13 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 28
13. ata Provider Monitor mode To connect to our device we will pair This is achieved by power cycling the device Pairing removes the need to know the radio settings of the device you are connecting to and also ensures that it is in a suitable state for configuration Pairing Procedure e Remove power from the acquisition module e Click the Pair button on the toolkit e You now have 10 seconds to re apply power to the acquisition module If you connect successfully the toolkit will change to the Information page If the pairing fails try again NOTE Pairing with the toolkit will not change the radio configuration settings of the connected device 5 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Analyser T24 Toolkit Spectrum Analyser Planar 0 100 2400 2410 2440 2450 2460 2470 2430 1 2 1 12 13 14 15 16 Spectral Now 7 8 3 10 Frequency Channel 2410 2440 2450 2 6 7 3 3 10 Frequency Channel The analyser page is provided as a tool and will not normally be needed unless you plan to change channels and want to find the best channel to select or to diagnose poor communications issues This page shows the radio signal levels detected across all the channels available to the T24 series of devices Using this tool may help in detecting noisy areas and allow you to decide on which channels
14. by how much space is available and what battery life is required generally the bigger the battery the longer it will last Operating temperature range A batteries useable capacity is influenced by its operating temperature Generally the lower the temperature the lower their ability to provide charge Beware of the batteries specified operating range when considering a particular battery technology Self discharge Batteries are chemical devices and have a shelf life which needs to be considered in application where long battery life is required Typically an Alkaline has a battery life of 5 years Internal Resistance of battery Low internal resistance is important the higher the resistance the less useful life of the battery is available This is due to voltage drops caused during the high current phase of the measurement cycle In the case of a T24 SAf strain gauge input module 300mA required for 250uS Batteries with an internal resistance of less than 150mOhm will not require the additional inline capacitor module Connections to battery For the same reasons internal resistance must be low it is important to keep any voltage drops from the battery to the acquisition module as low as possible too Care must be taken in selecting the connection method between batteries and acquisition module For example cables should be kept as short and thick as possible Environmental Other considerations when selecting a connection method to the Batter
15. by somebody else Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 12 Save and Restore T24 Toolkit Save and Restore al 2 0 3i cm 38 8 00 dh Help Query the device for its parameters and save these to a configuration file on your computer or network location Load a previously saved configuration file into the currently connected device NOTE As all parameters are restored you will overwrite the existing device calibration information Here you can save the device settings to a file on your PC so that they can be later loaded back into the same or different device Items you can change Save Click this button to open a file dialog window to allow you to select a filename and location to save the configuration file to All configuration information including calibration data will be saved to the file The file extension is tcf Restore Click this button to open a file dialog window to allow you to select a filename and location of a previously saved file to load into the connected device All configuration information including calibration data will be overwritten The file extension is tcf Advanced Settings Click this button to enter the Advanced Settings Page Here are settings which do not normally require changing 13 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Data Provider Monitor T24 Toolkit Data Provider Monitor 34 o0 E ICM
16. e eed ODER esu eA ad 14 Advanced Settings uoces A quae one MERE Eres neta eal hd uie cse usage Ud Re P E eee ECT 15 Installation ETE 16 Seu UE V A 16 Power Supply Battery 252 d re dee eoo pene nee fe nae usse Peso iUe VP ese soe he Gee aateaes ess Vu vedo Ra RR 17 Considerations When Selecting Batteries ooooocococooncccccncncncconccncncccnc nr ehh hehe eene 17 Battery TyD6s ii eese Ier A PER A I UP CERT T Ee REDIT SERE Esai qu nies 18 Power Supply Modules i esee e ee ere peterent ta ieee bake yeu s e do 18 Lithium lon Polymer Module T24 BC1 ooooooccccccccnnccconcnccncccco nn n enhn ehh 18 Physica Connections c voe rere Rire a a a ed esu o eee e RR da RUP rra E Ere EO 19 SDOCIFICALION PLI M 19 Suitable Batteries sies eser one te roux e ux dee qo Reviews eErp in x ee deua ue e QUESCENKE eae delay VAS ons cine ce 19 Capacitor Mod le T24 BC2 is fees eeo ces eek a DURER QA S EE PES 20 MOUNTING is sese b der neo ve Deu aua etras se ove deed eed Ue rece vnu E vost eve a Pe ere Dun ET rene eee 21 LUCR PI 22 Internal Chip Antennas rrr eer ere xt extrae tee nit ape ee Vata rene die npe eae een enne Eee eles quis nere o iR a rid 22 External Arnitennas voee as ed Las 23 Daran ER 23 SPECIFICATIONS 4 torii see eniron ee ira oko Ve AAA EN ECU SOT RNC T OVE NEQUE tees Uae Ces Fe Ee e se Tee UeT ede 24 General RO
17. en entsprecheneden Vorgaben der Richtlinie 1999 5 EU Dansk Dette udstyr er i overensstemmelse med de v sentlige krav og andre relevante bestemmelser i Directiv 1999 5 EF Espafiol Este equipo cumple con los requisitos esenciales asi como con otras disposiciones de la Directive 1999 5 EC Francais Cet appareil est conforme aux exigencies essentialles et aux autres dispositions pertinantes de la Directive 1999 5 EC slenska essi b na ur samr mist l sbo num kr fum og rum kv um tilskipunar 1999 5 ESB Italiano Questo apparato conforme ai requisiti essenziali ed agli altri principi sanciti dalla Direttiva 1999 5 EC Nederlands Deze apparatuur voldoet aan de belangrijkste eisen en andere voorzieningen van richtlijn 1999 5 EC Norsk Dette utstyret er i samsvar med de grunnleggende krav og andre relevante bestemmelser i EU directiv 1999 5 EC Portugu s Este equipamento satisfaz os requisitos essenciais e outras provis es da Directiva 1999 5 EC Suomalainen T m laite t ytt direktiivin 1999 5 EY oleelliset vaatimukset ja on siin asetettujen muidenkin ehtojen mukainen Svenska Denna utrustning r i verensst mmelse med de v sentliga kraven och andra relevanta best mmelser i Direktiv 1999 5 EC This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC FCC Fe Family RAD24 Models i and e for internal and external antenna variants
18. ery Type This is not a parameter of the device but information used by the battery life guide You can choose from some preset batteries or choose custom to allow you to select your own battery capacity See below This will also offer to change the Battery Low Level if the level suitable for the chosen battery is not the level currently set Usable Capacity This is not a parameter of the device but information used by the battery life guide This is the capacity of the battery in Amp Hours and has a profound effect on battery life calculations This capacity needs to be calculated from battery manufacturer s data sheets to take into account that we can only use batteries down to 2 1 Volts so in the case of twin AA cells this would be 1 05 Volts Generally the usable capacity will not be as high as that advertised by the battery manufacturer Temperature and internal resistance of the battery are not taken into account in the guide Sensor Impedance This is only available for certain acquisition modules This is not a parameter of the device but information used by the battery life guide Enter the resistance of the connected strain gauge in Ohms Usage Per 24 Hour Period Enter the number of hours per 24 hour period that the T24 SAf will be turned on and communicating 9 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Battery and Radio Levels T24 Toolkit 264 0 21 x 38 Help Signal Strength
19. ies is the effect of vibration A standard battery holder is a poor choice in applications when the device can be subject to vibration This is due to the interruption of supply from the battery to the acquisition module caused when the spring arrangement holding the battery to the terminal of the holder is defeated Corrosion of terminals must also be considered as this will also introduce resistance into the supply connections This could be overcome by ensuring the enclosure is sealed Optimising battery life Battery life can be optimised by considering the following Use of low power mode Transmission interval Required Measurement resolution Sample time Sleep Wake configuration Auto Sleep duration 17 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Battery Types Battery Type Alkaline Zn MnO Nickel Metal Hydride NiMh Nickel Cadmium NiCad Lithium Primary 3 6V Li SOCl Lithium Iron Disulphide Li FeS Lithium lon and Lithium Polymer LiON LiPo Power Supply Modules Notes Pairs of alkaline 1 5V cells are the most common Use D cells for maximum life and AA cells where space is restricted Example Varta 4014 D Varta 4006 AA Recommend T24 BC2 module to maximise usable capacity Most cells are 1 2V so two in series gives 2 4 Volts These can match alkaline batteries in capacity but as the charged voltage is lower they do not match the usable capacity The
20. k for a filename and proceed to log the received data to a CSV file in the following format Data Tag Elasped mS Value The View Last Log button will launch the application associated with CSV files and open the last logged file 7 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Information T24 Toolkit Information at Ly 0 II Cm 388 04 Help ID FFC937 Model T24 SAf Firmware Version 1 00 Radio Module Firmware Version 1 8 Naro RR ikke quss Fast Strain Acquisition Module Once successfully paired to a device this page is displayed This page shows you information about the connected device Items you can change Name You can enter a short description which may help you recognise this device in the future Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 8 Battery Life T24 Toolkit Battery Life Battery Life Guide Battery Type Select a common battery type or enter a custom capacity Capacity Ah Sensor Impedance Ohms Usage Per 24 Hour Period Hours Battery Life 3 days and 8 hours This page gives guides on achievable battery life Note that the battery life calculator is assuming the best case scenario which is at 20 C and that the battery has a suitable low internal resistance or that a suitable capacitor is fitted across the battery See battery details in the Installation section Items you can change Batt
21. o the RF window 64 mm gt 20 mm 26mm y 58 mm The bulkhead mounting antenna can be used with metal or plastic housings Care must be taken when mounting the Antenna to ensure the installation does not become directional Antenna Orientation For the maximum range the acquisition module and any other modules should be orientated as shown The sensitivity to the radio transmission will be reduced if the acquisition module is oriented in a vertical or portrait position if a handheld is used because the handheld can only be used in one orientation j PITTA o 5 ll E eae Ly 23 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Specifications General Radio Min Typical Max Units License License Exempt Modulation method MS QPSK Radio type Transceiver 2 way Data rate 250 K bits sec Radio Frequency 2 4000 2 4835 GHz Power 1 mY Range RAD24i Integrated antenna 100 325 Metres feet Range RAD24e External antenna 200 650 Metres feet Channels DSSS 16 Maximum range achieved in open field site at a height of 3 metres above ground T24 SAf Specification with 1000R bridge 2 5mV V at 3V supply at 25 C Measurement Min Typical Max Units Strain Gauge Excitation System 4 Wire Strain Gauge Excitation Voltage 4 5 5 5 25 V DC S
22. of the quality of the received data radio link received data Remote signal received at the acquisition module LQI 100 RSSI 056 CV E gt Battery Voltage 2 18V Low Battery Level LQI value which stands for Link Quality Indicator This value will range from 0 to 100 and within this band you should still achieve communications As the level drops towards zero communications may become intermittent but still achievable RSSI is effectively the received dB level which will range from about 30 which is a good signal to 90 which is a weak signal CV is the correlation value and indicates how well the signal can be decoded This ranges from 55 which is a poor quality signal and 110 which is an excellent signal 11 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Channel and Encryption T24 Toolkit Channel and Encryption al 0 AI n 388 OA Channel Help You can select 1 of 16 channels Encryption Key The encryption key is 32 hex characters long idad RR RR RR Peters alowed are 1234567890ABCDEF NOTE Changing the channel and key will not affect the device until it has been power cycled If you have a handheld device and one or more acquisition devices and you want to change the channel and keys for all you could do either of the following Connect this toolkit to each of the devices in turn and change the channel and key settings Connect to just the handheld
23. og Once logging has stopped clicking this will open the log file in the program associated with the csv file extension Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 14 Advanced Settings T24 Toolkit Advanced Settings Ey i 0 EH m 38 a D 4h Help Sleep Delay s 0 Enter a time in seconds after which without receiving a Keep Awake message the device will enter deep sleep where no transmissions will occur again until the device is woken Data Tag 0927 This identifies the data transmissions and should only be changed under instruction If this is changed 721 then you would need to pair the device again to the handheld Shunt Cal You can turn on and off the shunt calibration Ensure that you turn this off before returning the module to its normal operation You should not normally need to change these settings Items you can change Sleep Delay Here you can enter a delay in seconds after which the acquisition module will return to deep sleep if no Keep Awake message is heard from another T24 module such as an analog output module The default is 60 seconds Data Tag The data transmitted by the acquisition module is marked with a Data Tag which is a 2 byte hexadecimal code By default this is set to the last 2 bytes of the device ID or to put it another way the last 4 characters of the device ID If by some chance you had two acquisition module devices that would be working on the
24. on The acquisition modules have been tested with T24 ANTA and T24 ANTB When integrated in OEM products fixed antennas require installation preventing end users from replacing them with non approved antennas Antennas other than T24 ANTA and T24 ANTB must be tested to comply with FCC Section 15 203 unique antenna connectors and Section 15 247 emissions Acquisition modules have been certified by the FCC for use with other products without any further certification as per FCC section 2 1091 Changes or modifications not expressly approved by Mantracourt could void the user s authority to operate the equipment In order to fulfil the certification requirements the OEM must comply with FCC regulations 1 The system integrator must ensure that the text on the external label provided with this device is placed on the outside of the final product 2 The acquisition modules with external antennas may be used only with Approved Antennas that have been tested by mantracourt IC Labelling requirements for Industry Canada are similar to those of the FCC A clearly visible label on the outside of the final product enclosure must display the following text Contains Model RAD24 Radio 2 4 GHz 1C 7224A RAD24 Integrator is responsible for its product to comply with RSS 210 Low power Licence exempt Radiocommunication Devices All Frequency Bands Category Equipment RSS CE The T24 series has been certified for several European c
25. ou wish to connect through Select USB as the interface and select 1 as the Base Station Address In the toolkit all items that can be changed by the user are coloured orange To change a value just click on the relevant orange item You will then be presented with a new dialog window allowing you to change the value This may use a slider text box or list to allow your new value to be entered Click the Home button to attempt communications with the base station If no communications can be established the toolkit will remain on this page You will need to check that the base station is powered and that it is connected to the converter correctly Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 4 Home T24 Toolkit Home Ready to connect to your device now To connect to your device we need to pair to it Pairing means you do not need to know anything about channels ID or any other information about your device To pair you must Remove the power from your device Initiate the pair by clicking the button below Re apply the power to the device When applying power be careful to do this cleanly because if the device is powered up with an intermittent connection it may reset during pairing and result in poor or no communications We now have successful communications with the base station so we can now pair with our device or we can select the Spectrum Analyser mode or D
26. ountries If the acquisition module is incorporated into a product the manufacturer must ensure compliance of the final product to the European harmonized EMC and low voltage safety standards A Declaration of Conformity must be issued for each of these standards and kept on file as described in Annex Il of the RETTE Directive Furthermore the manufacturer must maintain a copy of the T24 device user manual documentation and ensure the final product does not exceed the specified power ratings antenna specifications and or installation requirements as specified in the user manual If any of these specifications are exceeded in the final product a submission must be made to a notified body for compliance testing to all required standards OEM Labelling Requirements The CE marking must be affixed to a visible location on the OEM product CE The CE mark shall consist of the initials CE taking the following form W If the CE marking is reduced or enlarged the proportions given in the above graduated drawing must be respected W The CE marking must have a height of at least 5mm except where this is not possible on account of the nature of the apparatus W The CE marking must be affixed visibly legibly and indelibly Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 26 Declaration Of Conformity We Mantracourt Electronics Limited The Drive Farringdon Exeter Devon EX5 2JB declare unde
27. packet loss rate and in extreme cases complete loss of signal Fortunately if consideration is given to these effects at the integration stage then a good quality link will be obtained Guidelines for product design When selecting materials for product enclosures preference should be given to fibreglass light coloured ABS or Polypropylene at the wavelength of 2 4GHz radio other materials will adversely affect the signal by attenuation refraction or change in polarisation If the application demands that the radio is fitted inside a metal enclosure then ensure that the specified clearances are maintained around the antenna and design in a fibreglass RF window at least as large as the clearance dimensions but ideally as large as possible RAD24i radios fitted inside a product should be oriented so that the chip antenna will be vertical when the product is in its normal operating position Guidelines for installation When planning installations ensure that line of sight between nodes is maintained and that objects or structures are kept at least one metre away from antennae wherever possible To avoid poor link quality between a RAD24i radio and a handheld device ensure that the RAD24i is mounted so that the chip antenna is vertical Improvement may also be obtained by altering the height above ground of the RAD24i a small increase or reduction in antenna elevation will often improve reception Range underwater is only a decimetre or so de
28. pending on packet rate Best performance underwater is obtained by using low packet rates and immersing water proofed antennae rather than water tight enclosures containing the antennae Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 16 Power Supply Battery The acquisition module operates from 2 1 to 3 6 Volts dc so can be supplied from a variety of cells WARNING It is important to note that the acquisition module is NOT reverse polarity protected WARNING The maximum voltage is 3 6V Considerations When Selecting Batteries Re chargeable or replacement This really depends on the application Some applications where expected battery life with alkaline batteries will be many years would probably not warrant the use of re chargeable batteries Re chargeable batteries have implementation issues such as how to connect to the charger how to seal this connection if required can the batteries be re charged at a convenient point in the operation of the device I E between shifts and does the voltage when charging exceed the maximum supply voltage of the acquisition module if so the inline charging module will need to be fitted Required battery life Driven by the application and mainly dependent on measurement rate and sample time The operation would normally require that the acquisition module is used in Low Power Mode to maximise battery life Size of Choosing a battery will be influenced
29. r modes are not compromised Recommend T24 BC1 module Lithium lon Polymer Module T 24 BC1 The T24 BC1 is a battery charger and power supply suitable for the T24 range of 3V acquisition modules The T24 Battery Charger is designed to supply a constant 3 3V from a Li ion Battery while also charging the battery from an input voltage The unit comes pre configured to provide a charging current of 466mA suitable for VARTA LIP653450 This module also supports additional batteries providing a charge current of 133mA via the removal of the leaded resistor non surface mount Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 18 Physical Connections Charging Current Resistor Fitted 466mA Resistor Removed 133mA LED lights when supply voltage applied Specification Parameter Min Typ Max Units Supply Voltage 4 1 5 6 Regulated Voltage Output S z w w Mw lt lt lt Battery positive connection Maximum Cable Length 150 23 r3 Quiescent Current 1 7 07 02 gauge wire attached to maximum load i e T24 SAf with four 350 Ohm strain gauges Note LED will only be lit when an input voltage is applied Suitable Batteries VARTA LIP653450 e Rated Capacity 1100mAh e Dimensions 35 x 54 x 7 mm e Weight 20g e Charge Time 3 Hours e 466mA e Battery life 3 3 days VARTA LIC18650 e Rated Capacity 2200mAh e Dimensions 18 25 Diameter 65mm
30. r our sole responsibility that our products in the T24 Radio Telemetry Product Range to which this declaration relates are in conformity with the appropriate standard EN 300 328 following the provisions of the Radio and Telecommunications Terminal Equipment Directive 1999 5 EC FCC CFR Title 47 part 15c BS EN 61000 4 2 and BS EN 61000 4 3 following the provisions of the EMC Directive 2004 108 EC and Low Voltage Directive 2006 95 EC December 2007 Brett James FCC ID VHARAD24 Development Manager Mantracourt Electronics Limited 27 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual Worldwide Regional Approvals Europe CE USA FCC Canada IC Australia To Be Determined China To Be Determined Japan To Be Determined Important Note Mantracourt does not list the entire set of standards that must be met for each country Mantracourt customers assume full responsibility for learning and meeting the required guidelines for each country in their distribution market For more information relating to European compliance of an OEM product incorporating the T24 range of modules contact Mantracourt or refer to the following web site www ero dk Warranty All Telemetry products from Mantracourt Electronics Ltd Mantracourt are warranted against defective material and workmanship for a period of 1 one year from the date of dispatch If the Mantracourt product you purchase appears
31. se batteries self discharge at a faster rate than alkalines If charging these cells in circuit precautions must be taken to ensure that the maximum voltage on the acquisition module is not exceeded Example GP 270AAHC AA Recommend T24 BC2 module to maximise usable capacity Most cells are 1 2V so two in series gives 2 4 Volts Three in series can be used to give 3 6 Volts These do not have the usable capacity of an alkaline battery These are generally only useful if they are to be charged on a regular basis If charging these cells in circuit precautions must be taken to ensure that the maximum voltage on the acquisition module is not exceeded Example Recommend T24 BC2 module to maximise usable capacity Lithium cells can be used but note that the maximum voltage is 3 6 Volts Select a cell with low internal resistance Example Saft LS17500 A Saft LSH20 D Recommend T24 BC1 module as these cells usually have a high internal resistance These can be found at 1 5 Volts and can therefore be a direct replacement for Alkaline cells The low internal resistance and high capacity make these batteries an ideal choice Example Energizer L91 These generally start at 3 7V and exceed the maximum allowable voltage These are usable if a regulator and charging circuit can be installed between the acquisition module and the battery Care must be taken here that the regulator does not draw too much current when idle so that the low powe
32. tation to allow your computer to communicate with T24 telemetry devices Calibration Please Note The calibration feature is not available for the T24 SAf Installation T24 Toolkit To configure the devices we must use the T24 Toolkit software application This can be downloaded from our web site or may be shipped with your products Install this on a PC or laptop Run setup exe and follow the prompts to install the software T24 BSu Base Station If you have a USB version of the base station T24 BSu then you just need to plug this into a USB socket on your PC If you are using an alternative base station then please refer to the appropriate manual 3 Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual T24 Toolkit The T24 Toolkit provides a means of simple configuration of the acquisition module along with useful tools to aid integration Run the T24 Toolkit software application General Pages Setup Base Station Communications T24 Toolkit Settings Select the connection type between the base station and the Interface Select the interface between the computer and the base station Port 3 Select the COM port that the base station is connected to Baudrate 250000 the baudrate that matches the settings of the base station DIP Base Station Address Each base station has an address settable by DIP switches The address selected here must match the connected base station y
33. to have a defect in material or workmanship or fails during normal use within the period please contact your Distributor who will assist you in resolving the problem If it is necessary to return the product to Mantracourt please include a note stating name company address phone number and a detailed description of the problem Also please indicate if it is a warranty repair The sender is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit Mantracourt warranty does not apply to defects resulting from action of the buyer such as mishandling improper interfacing operation outside of design limits improper repair or unauthorised modification No other warranties are expressed or implied Mantracourt specifically disclaims any implied warranties of merchantability or fitness for a specific purpose The remedies outlined above are the buyer s only remedies Mantracourt will not be liable for direct indirect special incidental or consequential damages whether based on the contract tort or other legal theory Any corrective maintenance required after the warranty period should be performed by Mantracourt approved personnel only ISO 9001 REGISTERED FIRM THE QUEEN S AWARDS l e FOR ENTERPRISE AS CE In the interests of continued product development Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice DE
34. train Gauge Drive Capability 85 5000 Ohms Maximum Gauge Sensitivity FR 3 2 mV V Offset Temperature Stability 1 4 ppm C Gain Temperature Stability 3 5 ppm C Offset Stability with Time 20 80 ppm of FR 1 Gain Stability with Time 30 ppm of FR 2 Non Linearity before Linearization 5 25 ppm of FR Internal Resolution 16 000 000 24 Resolution Bits Noise free resolution is 8000 13 Bits for a 10 second sample period 1 From original offset at any time 2 First year Electrical Min Typical Max Units Power Supply voltage 2 1 3 0 3 6 V DC Power Supply ripple 50 mV AC pk pk Power Supply current Min Typical Max Units Normal Mode 1K Bridge 60 65 mA Standby Low power mode 5 20 uA Environmental Min Typical Max Units Operating temperature range 40 85 C Storage temperature 40 85 C Humidity 0 95 RH Physical PCB Dimensions 17 x 37 5 x 6 5mm Approvals CE CE Complies with EMC directive 2004 108 EC The Radio Equipment and Telecommunications Terminal Equipment R amp TTE Directive Mantracourt Electronics Limited T24 SAf Fast Strain Gauge Acquisition Module User Manual 1999 5 EC European Community Switzerland Norway Iceland and Liechtenstein English This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC Deutsch Dieses Ger t entspricht den grundlegenden Anforderungen und den weiter
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