Key Digital ES381 User's Manual
Contents
1. The COM port number will be platform specific this 1s just an example Elan Digital Systems Ltd 22 USBcount50 USER S GUIDE Iss1 EB Network adapters 5 ded Ports COM amp LPT Y Communications Port COM4 JY Painter Port LPT1 USBcount5O Controller COM2 System devices ul Universal Serial Bus controllers USB Root Hub amp USB Root Hub USBcount50 Composite Device USBcount50 Controller VIA Tech 3038 PCI to USB Universal Host Controller VIA Tech 3038 PCI to USB Universal Host Controller Once the hardware has installed there 1s no need to make any settings for the allocated COM port the software takes care of all this at run time start the USBcount50 software and you will see the following display To find out what the various buttons and knobs do simply hover over them for a brief explanation A2 channel example is shown Elan Digital Systems Ltd 23 USBcount50 USER S GUIDE Iss1 3 2 Windows 2K and XP Before plugging in the hardware Use the supplied install CD and run the setup program This will copy all the required files and drivers to your PC After running the setup program Insert the USBcount50 into a free USB socket or into a USB hub port A USB extension cable can be used 1f needed During installation two hardware devices are detected The USBcount50 Composite Device first followed by the USBcount50 itself It is vital to complete the installation of2. To find out what the various buttons and knobs do simply hover over them for a brief explanation S A 1 channel example is shown Elan Digital Systems Ltd 25 USBcount50 USER S GUIDE Iss1 3 3 Troubleshooting e Check that the counter hardware installed properly Use the device manager as shown above and check that there are no yellow exclamation marks on any of the USBcount50 devices If there are try deleting that device then un plug and re plug the counter e Make sure that you do not press cancel or stop during any part of the hardware installation If you did use the device manager to delete any USBcount50 devices shown the re plug the device and try again e When you run the software you get a run time error This could be caused by a much older version of the USBcount50 software that was installed previously but did not un install its registry hive settings To correct this go to the USBcount50 install directory and double click the remove settings reg file and click OK when prompted This will remove the registry hive associated with USBcount50 Now try running the software again e If you are still having problems please use the Windows PrtScr button to make a screen capture of the application Then paste this into a Word or Paint document and send it to tech support 14 This is where USBcount50 saves the counter settings Elan Digital Systems Ltd 26 USBcount50 USER S GUIDE Iss1 4 HARDWARE SPECIFICATION
3. 0 4V Outside these ranges DC resistance approximately 90KOhms 20pF typical LOOMHz typical 30V max to GND 1 50V to 5 00V in 256 steps of 13 7mV to suit external logic environments see 2 2 28 Bits with overflow detect bit Guaranteed SOMHz typically 100MHz with input signal suitable to trigger input threshold 12 50M Hz initial accuracy 0 01 ageing and drift after 1 year 0 005 temp coefficient 0 005 oC For 2 or more stacked USBcount50s typical 2ns between units 100MHBz 10MHz IMHz from internal PLL clocked by master clock 0 1s 1s 10s divided from master clock FALLING gt FALLING RISING gt FALLING FALLING gt RISING RISING gt RISING USB 1 1 Full Speed 12MBits sec 10C4 F004 1 This figure derives from the 300V CAT II isolation rating and defines the peak transient voltage that can be safely tolerated between the BNC ground and the USB ground Works in USB 1 1 or USB 2 0 hosts using the 12MBits sec full speed mode Elan Digital Systems Ltd 29 USBcount50 USER S GUIDE Iss1 4 4 4 Software USBcount50 support Win98SE Me 2000 XP Recommended system Pentium Class 600MHz or better 16 Bit colour depth graphics or better with graphics acceleration 800x600 min screen resolution 256MBytes RAM USBcount50 registry hive HKEY CURRENT USER Software VB and VBA Program Settings USBcount50 this key is deleted during un install Elan Digital Systems Ltd 30 USBcount50 USER S GUIDE Iss1
4. All parameters typical 20 C unless otherwise stated 4 1 Power Requirements Supply Voltage 5 0V 10 from host USB bus Total Supply Current 200mA avg 4 2 Mechanical Mass 42g typ Case Material Data Polycarbonate UL94V rated Size typical in mm 99 6 x 30 6 x 17 570 4 3 Environmental Humidity lt 80 non condensing General Operating Temperature 10 C to 45 C Ambient Storage Temperature 40 C to 80 C Ambient Operating Location Indoor or under cover use only Operational Category Cat II Pollution Degree 2 1 From BNC end to USB end 16 Not including P clips on base Elan Digital Systems Ltd 27 USBcount50 USER S GUIDE Iss1 4 4 Performance 4 4 1 Safety Data and Maximum Ratings A Important Safety Precautions Always observe these when using the USBcount50 The USBcount50 contains no user serviceable parts inside Do not open the plastic housing There may be lethal voltages inside the plastic housing Do not use the instrument if the housing is damaged or is poorly fitting In such a case do not connect anything to the USBcount50 to avoid a hazard The USBcount50 will have to be repaired or replaced in such a situation Do not exceed the maximum ratings listed below Never use the instrument if it becomes damp for any reason This includes situations were condensation has formed on the unit due to sudden temperature or humidity changes Never use test leads that are damaged or have ins
5. Elan Digital Systems Ltd 5 USBcount50 USER S GUIDE Iss1 2 ABOUT THE USBcount50 2 1 General The USBcount50 has been designed to allow a broad range of input frequencies and pulses to be measured The input stage supply 1s programmable to allow the counter to work in circuits generating various Voh levels Each USBcount50 can be used as an independent single channel counter but to enhance flexibility several USBcount50s can be stacked together to make a combined 2 3 or 4 channel device In this case each counter is synchronised with the others so that the compound device acts like a single multi channel instrument Each USBcount50 still needs its own USB connection and the combined device shares a common ground between all the BNC connectors 1 e the channels are isolated from the USB but not from each other ES USBcount50 la 49 99975600MHz 20 00009760ns Elan Digital Systems Ltd 6 USBcount50 USER S GUIDE Iss1 2 2 USBcount50 Architecture The figure below shows a simplified diagram of the USBcount50 STACK CONN CONTROLLER amp COUNTER USB use CONTROLLER Figure 2 2 1 USBcount50 Architecture Diagram Elan Digital Systems Ltd 7 USBcount50 USER S GUIDE Iss1 2 3 Using More Than One USBcount50 2 3 1 Stacked Mode A unique feature of the USBcount50 architecture is that up to 4 devices can be stacked to make a multi channel instrument In order to use a stacked configuration you must purchase the s
6. HEIL ELAN DIGITAL SYSTEMS LTD LITTLE PARK FARM ROAD SEGENSWORTH WEST FAREHAM HANTS PO15 5SJ TEL 44 0 1489 579799 FAX 44 0 1489 577516 e mail support pccard co uk website http www pccard co uk USBcount50 USER S GUIDE ES381 All Trademarks are duly acknowledged The USBcount50 is Patent Pending REVISION HISTORY Elan Digital Systems Ltd l USBcount50 USER S GUIDE Iss1 CONTENTS 1T OVER VIB e w X 5 2 ABOUT THE USBCOUNTOSJU 1 pute edt uod nunaa a 6 2k Genera lorna 6 22 JUsBcount U AECHIOCUITO oian aa r ESES 7 2 3 Using More Than One USBcount5O sssssseeccceccccccccsssssssssssecececceecsssssssssoe 8 2 DAKEE INIOUG ua i e e E E E E E A 8 2o Xssemblino THe Stack 25 33 ve EE e DE 8 2342 JDisassembims TNE SUA CK parsing Ten nE EOT 10 2 3 1 3 USB Connections For Stacked Configurations 11 2 3 1 4 Software For Stacked Configurations c cccccccececeeeeeeeeeeeeeeeeees 11 2 9 h DACKE DO SANU DON 18 cde ova ibam etd ten utatede ues 13 2 9 2 Non Stacked MIS MOdG sence ote ters ee oie er Ep E aote eto et e iet erat 14 2 3 2 1 USB Connections For Non Stacked Configurations 14 2 3 2 2 Software For Non Stacked Configurations eeeeeeesssse 14 BED M M 16 ZI put SUDDI Uo cedi uutibeste bro Pani S nut leer an tme ii ant Peter o 16 2 9 Counter MOUGS iioii EE ES Upe
7. Ix ee eoo Reo Ee HEPEeE EP LER EE OEE EP CENSURE QUE 17 23 MEEE GI cci rc EC 17 Deed S reduenc MOE ea E aeui clt 19 2 3409 Peno MOJ teta eR reece ere one tet ore E EORUM ore 20 ZW IPEeHOOJMOUe sequis Renan er nT one RT enn oR Ne RoBi oeee anes UM eee 22 9 SOFTWARE INSTALLATION 2 2 enc ooo epu oo desea eui D en cu benc eur Eep co erre Os 22 3 1 Windows 98SE and Windows Me eee eere eee eee eee eere eee eene sesso Ponoe 22 352 Windows 2K and XP iioii ai ie Ee tisse eo eii enis dins eR eS CHO s Na raodd 24 SRM Wen diri M 26 4 HARDWARE SPECIFICATION eere eene enne nnn nnn nnn 27 AU PowerRequiEenie DES seo RASEN ERECH APER REEER ONERE SCEYSIR ERE RE NER ESO MER AE REN PER TIAS ESIS 27 7 2 Mechanical osea ecu do eov bo Feo eese SE one Fev vui Saeco Uva oa aee Sao ARN RE Vei cu Te Saee a 27 A3 D dinis a 27 AA PerfoEHi3lie uuo eii ed tinta e verso Ri tub r e dee tesa De a iex Du Ioas 28 44 1 Safety Data and Maximum Ratings eesssssssssseeeeeeeeeeeennnnnns 28 24027 JOHOLDIUCO Seni e hat eat ssa bdo E E A E toc ad afud 29 249 IMiScelaneDUS ucena iu io get nu bes imus auti oe Sd eU que ise kmdu d de 29 Elan Digital Systems Ltd 2 USBcount50 USER S GUIDE Iss1 4 4 4 Software Elan Digital Systems Ltd 3 USBcount50 USER S GUIDE Iss1 Disclaimer This document has been carefully prepared and checked No responsibility can be assumed for inacc
8. hole Do remember that counters in the stack are NOT isolated from each other they are only isolated from the USB ports To re iterate stacked counters have their BNC connector bodies connected together through the stack connector Elan Digital Systems Ltd 13 USBcount50 USER S GUIDE Iss1 2 3 2 Non Stacked MIS Mode It is also possible to use multiple USBcount50s as independent instruments In this mode the counters are NOT connected together via the stacking interface This configuration is also termed Multi Instrument mode or MIS mode In MIS mode each counter can use its own timebase setting and each counter input will remain electrically isolated from the others unless you connect their BNC grounds together 2 3 2 1 USB Connections For Non Stacked Configurations All counters need a USB connection A standard hub may be useful for multi counter use to get enough USB ports Each counter needs about 200mA Plugging more than 2 counters into a hub will mean that the hub may need to be powered externally Please refer to the hub s documentation for more details about the power available per port 2 3 2 2 Software For Non Stacked Configurations By default when you run USBcount50 it will automatically detect all the counters connected via USB and will also check to see if the counters are electrically connected together via the stack To run in Non Stacked MIS mode the software must be told to drive one particul
9. that further readings cease During measurements the indicator in the reading panel changes colour depending on the state of the input signal or internal gate 49 99984200MHz 20 00006320ns Yellow means the first stage of integration has started could be the first external signal edge or the start of the internal gate period Elan Digital Systems Ltd 17 USBcount50 USER S GUIDE Iss1 Green means the reading is done l 49 99984500MHZ il 20 00006200ns Red means the reading over flowed 1 e external period too long or external frequency too high Try a shorter internal period or lower internal frequency SEE e over range over rande If the counter waits for more than 2 seconds whilst in Period mode and no external signal has been detected the indicator will blink rapidly white grey white grey etc d jaa lo f X e 0 00000000mH Elan Digital Systems Ltd 18 USBcount50 USER S GUIDE Iss1 2 5 2 Frequency Mode The counter can be put into Frequency mode using the selection button shown below Note too that clicking on a new period selection item will change to Frequency mode Lo USBcount50 In this mode of operation the counter will use an internally generated gating period of 0 1s 1s or 10s to integrate count pulses that arrive at the input during the period Normally the 1s period will suffice for most readings from 50MHz down but if the input frequency 1s
10. top two counters near the back P clip USB end With moderate force the top counter will pop up and come free Remove the stacking connector from the free counter Repeat this for all counters in the stack Elan Digital Systems Ltd 10 USBcount50 USER S GUIDE Iss1 2 3 1 3 USB Connections For Stacked Configurations All stacked counters need a USB connection A standard hub may be useful for multi channel stacks to get enough USB ports Each counter needs about 200mA Plugging more than 2 counters into a hub will mean that the hub may need to be powered externally Please refer to the hub s documentation for more details about the power available per port 2 3 1 4 Software For Stacked Configurations When you run USBcount50 it will automatically detect the counters connected via USB and will also check to see if the counters are electrically connected together via the stack It will then initialise all connected counters one at a time This may take a few seconds If you stack several counters but forget to connect say one of the counters to a USB port the software will warn you and will not run The software will display a channel diagram for each counter in use The channel number allocated to each counter depends on its serial number so the order you stacked them will almost certainly NOT be the same as the channel order allocated by software To find out which counter 1s Channel 1 use the CHI tab and click the i
11. ar counter You can then simply run multiple copies of the USBcount50 software one copy for each particular counter In order to achieve this mode of operation USBcount50 accepts a command line parameter USBcount50 MISp c They can of course still be snapped together but remember NOT to fit any of the stacking connectors so that the counters remain electrically independent of each other Elan Digital Systems Ltd 14 USBcount50 USER S GUIDE Iss1 COL 99 where p is the COM port number and c is the assigned channel number For example if you want to run 2 counters in MIS mode use Window s Device Manager to get the two COM port numbers for the two counters see 3 2 Lets assume they are COM4 and COMS Next locate the USBcount50 exe program normally under Program Files USBcount50 and highlight the file Right click the file and use Create Shortcut to make TWO shortcuts to the program Then for the first shortcut right click it and bring up Properties In the Target field add MIS4 1 to the end of the line Do the same for the second shortcut but add MIS5 2 Now double click the first shortcut An instance of USBcount50 will run and configure the counter on COM4 Next double click the second shortcut and this will launch a second instance of USBcount50 but this time configuring the counter on COMS and also note that this second counter appears as a CH2 tab This way you can easil
12. both devices After installation the device manager will look like 12 this File Action View Help m amp ilI Display adapters DVD CD ROM drives dig Human Interface Devices 3 IDE ATA ATAPI controllers E IEEE 1394 Bus host controllers ga Infrared devices 2 Keyboards Mice and other pointing devices IL Modems d Monitors BS Network adapters Bj PCMCIA adapters F Ports COM amp LPT V ECP Printer Port LPT1 Y USBcount5 coms Mh Processors Sound video and game controllers System devices Liniversal Serial Bus controllers SiS 7001 PCI to USB Open Host Controller Be SiS 7001 PCI to USB Open Host Controller im SiS PCI bo USE Enhanced Host Controller Se USB Root Hub We USB Root Hub f USB Root Hub m USBcount50 Composite Device eee PD D Include Language variants using the DBCS character mappings e g Chinese Japanese Korean etc If Windows prompts to search the Internet for a driver select Not this time and when it warns about Unsigned Drivers you MUST click on Continue Anyway 12 The COM port number will be platform specific this 1s just and example Elan Digital Systems Ltd 24 USBcount50 USER S GUIDE Iss1 Once the hardware has installed there is no need to make any settings for the allocated COM port the software takes care of all this at run time Start the USBcount50 software and you will see the following display EZ USBcount50 C
13. d button The LED on that counter will blink rapidly for about 4 seconds or until you click the button again Repeat this for each channel in the stack to identify them If you like you can stop the software and unplug all the counters from their USB connections and then re stack them 1n their channel order Elan Digital Systems Ltd 11 USBcount50 USER S GUIDE Iss1 The about tab lists all the counters that have been found The list shows the serial number and revision data for each counter USBcount50 X Ver1 0 0 Elan Digital Systems Ltd 12 USBcount50 USER S GUIDE Iss1 2 3 1 5 Stacking Do s And Don ts Do power off all counters remove USB lead before connecting and disconnecting counters from the stack Don t remove any counters from the stack while the software Is running Don t remove any counters from the stack while any of them are powered Don t stack several counters and leave one or more counters un stacked this configuration will ignore the un stacked counters Don t short circuit any of the stack connector pins or bend the pins or use excessive force trying to mate the connectors Don t probe or drive any of the stack connector signals Avoid touching the stack connector pins signals during stacking Do make sure that each stack connector 1s properly seated in place before trying to stack another channel on top Don t allow water or dirt etc to enter the counter via the stack connector access
14. e of Ons to 2 684s in steps of 10ns If you have a very slow input period then selecting the 1OMHz or 1MHz can increase this maximum period to 26 84s and 268 4s respectively at the expense of timing resolution down to 100ns and lus respectively Elan Digital Systems Ltd 20 USBcount50 USER S GUIDE Iss1 Period mode should be used if you have a single pulse or a slow input frequency In the latter case by timing the period from edge to edge allows a very accurate measurement of low frequencies by simply inverting the period measured This is known as reciprocal mode The software shows this reciprocal Elan Digital Systems Ltd 21 USBcount50 USER S GUIDE Iss1 2 5 4 Period Mode 3 SOFTWARE INSTALLATION 3 1 Windows 98SE and Windows Me Before plugging in the hardware Use the supplied install CD and run the setup program This will copy all the required files and drivers to your PC After running the setup program Insert the USBcount50 into a free USB socket or into a USB hub port A USB extension cable can be used 1f needed During installation three new hardware devices are detected The USBcount50 Composite Device first followed twice by the USBcount50 Controller itself The installation is automatic and requires no user input After the drivers have started you will not get any indication that everything went OK except by checking the device manager After installation the device manager will look like this
15. no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna ncrease the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult an Elan authorized dealer or service representative for help Elan is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment Unauthorized changes or modifications could void the user s authority to operate the equipment 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 operation Listed Products The models covered by this installation guide are intended only for installation in Listed computers for use in business or home Elan Digital Systems Ltd 4 USBcount50 USER S GUIDE Iss1 1 OVERVIEW The USBcount50 is an isolated digital pulse counter that has the following featu
16. res Single channel pulse counter with BNC input and USB PC interface Each USBcount50 can be stacked to increase channel count each requires its own USB connection 300V Cat II isolation between BNC ground and USB ground This means that there is no DC path through the USBcount50 from the counters input to the PC s ground Up to 50MHz input counting 100MHz with suitable input signal Ons timing resolution single shot or continuous update 28 bit counter gives 268 million 1 dynamic range Two modes of operation Frequency mode or Period mode Frequency mode can use 0 1s 1s or 10s integration times Large dynamic range of counter means ls integration setting can be used from 1KHz up to 1OOMHz i e no auto ranging required Period mode can use internal IMHz 10MHz or 100MHz reference clocks coupled with edge detection logic for rising rising falling falling falling rising rising falling Large dynamic range of counter means 100MHz clock setting can be used from 10us up to 26 8s 1 e no auto ranging required Period mode aka reciprocal counting mode is able to measure frequencies down to below 4mHz Programmable input stage voltage level from 1 5V to 5 0V in 256 steps Input protected to 30V DC Host powered from USB 200mA typ Stacked configurations of 2 3 and 4 channels are supported Power activity LED A stacking connector kit is required In stacked configurations the channels share a common ground at the BNC terminals
17. s could be shorted out accidentally or you may touch the pins when the counter 1s connected to a high voltage and you could get an electric shock Similarly if you plan to use only one counter make sure there is no stack connector fitted or the shorter connector type is fitted A This is a safety critical point so please note it carefully Now you can assemble the stack Elan Digital Systems Ltd 9 USBcount50 USER S GUIDE Iss1 Start with the bottom counter Hold it in one hand and put the next counter on top of the 1 the same way around Align the stacking connectors and when the stacking connectors are partly mated engage the front P shaped clip BNC end Jn the 2 counter into the P shaped slot on the 1 counter nd NO Now bring the back edge P clip USB end of the counter down until it clicks into the 1 counter s slot These tWo counters are now mated Check that as you pushed th 2 counter down the stack connector has not been forced upwar if it has simply press it down until it seats correctly see picture above for a guide as to the normal exposed connector depth after stacking Repeat this for each remaining counter adding each one on top of the previous one The counters are now stacked 2 3 1 2 Disassembling The Stack Start with the top counter in the stack Grasp the stack in one hand and with the other hand s thumb and forefinger pinch between the interface between the
18. slow less than 1KHz the 10s period may prove better at the expense of a slower reading update time The 0 1s period offers faster reading update rates but is only useful for input frequencies of greater than around 1OKHz Note that both of these limits are simply the point at which one extra count during the integration time has a 0 1 effect on the reading You can of course count lower frequencies if you don t mind the resolution getting worse than 0 1 If you have a slow input frequency Period mode may be more suitable With favourable input drive 1 e suitable amplitude to trigger the counter the counter can reach 100MHz counting rates Elan Digital Systems Ltd 19 USBcount50 USER S GUIDE Iss1 2 5 3 Period Mode Period mode uses an internally generated reference clock to time the period between two edges on the input waveform It is selected as shown ES USBcount50 2 00000000us 500 00000000KHz The reference clock can be selected from 100MHz 10MHz or IMHz The pair of edges that 1s timing 1s fneasured can be selected from FALLING gt FALLING RISING gt FALLING FALLING gt RISING RISING gt RISING Note that for all practical purposes the first and last listed settings will yield the same answer but there may be cases where being able to switch between these two settings is useful in certain PWM waveforms for example For most input periods the 1OOMHz setting will suffice It offers a rang
19. tacking connector kit This kit comprises 3 long lead connectors and 1 short lead connector as shown 2 3 1 1 Assembling The Stack To stack the USBcount50 devices first be sure that none of them are connected to a USB port Before you begin put the short lead connector to one side you ll use that one last Now insert one of the long connectors from the top of one of the counters it doesn t really matter which one Push the pins of the connector into the top of the stacking connector from the side where you can see the top of the black connector down inside the counter Be careful when doing this don t use too much force or you may damage the connector pins Push the long connector all the way in until it seats down on the counter s internal connector You should be able to see the gold pins about 2 3mm beyond the bottom surface of the counter The connectors have no pin orientation they can go in 2 possible ways round both are OK Don t stack more than 4 the software will reject this Elan Digital Systems Ltd 8 USBcount50 USER S GUIDE Iss1 em ul oot tl Repeat this for all except the last counter to be stacked For the last counter in the stack do the same as above but use the short length connector This time the pins are shorter so they stop well inside the counter s case This counter MUST be the bottom counter in the stack The reason for this is that if you use the long connector the pin
20. ufficient or incomplete insulation Never allow any conductive part of any test lead to contact the host computer ground Doing so will bypass the safety isolation in the USBcount50 and could cause a lethal hazard Remember that the isolation is between the BNC and the USB connectors The BNC is of course at the same potential as the test lead ground clip to which it is connected Be careful when measuring hazardous voltages not to touch the BNC connector ground for this reason Only use the shorter length stack connector in the bottom counter of the stack and if using a single counter don t fit any stack connector at all This is to avoid touching the contacts Elan Digital Systems Ltd 28 USBcount50 USER S GUIDE Iss1 Isolation rating r eo UT Transient isolation 4 4 2 Performance Measurement modes RUN mode STOP mode ONCE mode Input connector Input DC resistance Input capacitance Input 3dB bandwidth Input protection Input supply Main counter Maximum count rate Master clock Master clock skew Internal reference clocks Internal reference periods Period edge detection 4 4 3 Miscellaneous USB transfer rate USB device ID 300V CAT II 500V CAT I between BNC ground and USB ground BNC ground to USB ground 2 5KV Frequency and Period Continuous readings Readings frozen Single reading returning to STOP BNC IMeg to GND for inputs between GND 0 4V and INPUT SUPPLY
21. uracies Elan reserves the right to make changes without prior notice to any products herein to improve functionality reliability or other design aspects Elan does not assume any liability for loses arising out of the use of any product described herein neither does its use convey any license under its patent rights or the rights of others Elan does not guarantee the compatibility or fitness for purpose of any product listed herein Elan products are not authorized for use as components in life support services or systems Elan should be informed of any such intended use to determine suitability of the products Software supplied with Elan PC Cards Compact Flash cards or USB devices is provided as is with no warranty express or implied as to its quality or fitness for a particular purpose Elan assumes no liability for any direct or indirect losses arising from use of the supplied code Copyright 2006 Elan Digital Systems Ltd Federal Communications Commission FCC Statement This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is
22. y identify which instance of software is for which counter Note that you could also have chosen MIS4 1 and MIS5 1 Both counters would then act like a CH1 tab Its up to you how you choose to configure the system In MIS mode the settings for a particular software instance will be saved when you exit and will be separate to any other counter s settings You can run up to 4 counters in MIS mode and you can assign channel numbers from 1 to 4 Note the space Elan Digital Systems Ltd 15 USBcount50 USER S GUIDE Iss1 2 4 Input Control 2 4 1 Input Supply The USBcount50 supports a programmable input supply via the slider control Ed USBcount50 Supplies from 1 50V to 5 00V are possible and the slider control adjusts in 256 steps of 13 67mV per step This range allows the user to match against common industry standard logic levels present in their circuit to be measured Note that the input switching threshold is not a linear function of the supply voltage rather the threshold varies in steps as the supply voltage is increased corresponding to the Vih specifications for 1 8V 2 5V 3 0V 3 3V and 5 0V logic domains Elan Digital Systems Ltd 16 USBcount50 USER S GUIDE Iss1 2 5 Counter Modes 2 5 1 General In RUN mode the counter continually display readings assuming these 1s an input signal of course EZ USBcount50 Clicking ONCE takes a single reading and then places the counter into STOP mode so
Download Pdf Manuals
Related Search