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Model 5170/5180 Gauss/Tesla Meter

1. _ SYPRIS ET TEST amp MEASUREMENT FW BELL www fwbell com Model 5170 5180 GAUSS TESLA METER Instruction Manual Manual UN 01 260 Rev F Sypris Test amp Measurement C All rights reserved Toll Free 800 778 6117 USA 407 678 6900 Table of Contents Section 1 Introduction UNDERSTANDING FLUX DENSITY 0 0 eee MEASUREMENT OF FLUX DENSITY 0 ee PRODUCT DESCRIPTION 00 0 eee eee eet ee tees APPLICATION S rrn chee e N ia Section 2 Specifications SPECIFICATIONS einna diel kje pe besa MODEL 5170 5180 SPECIFICATIONS ossessi STANDARD TRANSVERSE PROBE 0 ees eee STANDARD AXIAL PROBE rernnvvrnnnnnnrnnnrnvrrennrervnnnnrnrnnnrrnrnne LOW FIELD AXIAL PROBE mm rrrrnnnnnnvvnnnnnnrrennrverannrvervnernrernnnn ZERO FLUX CHAMBER cece eee eee e iieiaeie Section 3 Operating Instructions OPERATOR SAFETY erennnnnvnnnnnnvrnrnnevrenensnnvennnnnnvnnnnsnrrnsersnsnn OPERATING FEATURES 00 ete eee eee eee eee teeta INSTRUMENT PREPARATION i erevennnrvnnrnnvvrnnnrnnrnnnnverrarerrrren POWER UR EE POWER UP SETTINGS mmnnnnvnnnnnvrvrnevvrrrerrnrvrennrnavennnnnnnnnnvernn LOW BATTERY CONDITION arvrnnnnnnvrnnnnnnvrnnvnvrrennnrnrnnnnnvrnnnnn OVERRANGE CONDITION mmnnrennnnnvrenervvvennnnnnnrannnnnrrennrrnrnn AC OR DC MEASUREMENT SELECTION ssec UNITS OF MEASUREMENT SELECTION 0 00 ee RANGE SELECTION tosccctscccceccceetivessccseesaenecshoneeddeonceseeaa
2. OPT OPTION IDENTIFICATION QUERY Returns a string that identifies the model number and serial number of the Hall probe The model number will always be 12 characters in length including trailing spaces such as STD580404 Following the model number will be a comma Next will be the serial number which will always be ten characters in length including trailing spaces such as 0523004 If no probe is attached or can t be identified the string will default to UNDEFINED 0 SRE lt NRf gt PROGRAM STATUS ENABLE REGISTER A set bit in the STATUS ENABLE register allows its corresponding event to set the RQS request for service in the STATUS BYTE register lt NRf gt is an ASCII string representing an integer mask For instance a value of 45 decimal is the same as binary 00101101 thus setting bits 5 3 2 and 0 in the enable register SRE STATUS ENABLE REGISTER QUERY Returns the contents of the STATUS ENABLE register STB STATUS BYTE QUERY Returns the contents of the STATUS BYTE register NOTE The STATUS BYTE register is not cleared after an STB command Other registers and buffers must be cleared for the bits in the STATUS BYTE register to be cleared SCPI COMMAND SYNTAX The SCPI commands go one step farther than IEEE488 2 and provide a language protocol and defines a standard set of commands to program most aspects of the instrument These are the syntax rules 1 The first character of any command string is a
3. STATUS ENABLE REGISTER 7 OSB EAV Figure 4 3 Condition Event and Enable registers Figure 4 4 Status Byte and Enable registers 4 5 OSB Operation Summary Bit If any of the bits in the OPERATION EVENT register set and their respective enable bits are set the Operation Summary Bit OSB will set ESB Event Summary Bit If any of the bits in the STANDARD EVENT register set and their respective enable bits are set the Event Summary Bit ESB will set QSB Questionable Summary Bit If any of the bits in the QUESTIONABLE EVENT register set and their respective enable bits are set the Questionable Summary Bit QSB will set MSB Measurement Summary Bit If any of the bits in the MEASUREMENT EVENT register set and their respective enable bits are set the Measurement Summary Bit MSB will set EAV Error Available This bit sets any time there is an error message available in the error buffer RSQ Request For Service If any of the other bits in the STATUS BYTE are set and their respective enable bits are set in the STATUS ENABLE register the Request For Service RQS will set 4 6 STANDARD EVENT REGISTER If any of these bits set and their respective enable bits are set the Event Summary Bit ESB will set in the STATUS BYTE 7 5 4 3 2 1 0 PON CME Exe DDE 5 OPC Figure 4 5 P
4. eeeccceeee teense teeters eee eee SCPI COMMANDS 0 0 cic tee e ete ee ee tenes ee teneeee eee ee eee ERROR MESSAGES AND COMMANDS oseese STATUS COMMANDS 0 eee ee eect eee eee ee need MODE COMMANDG 0 ece cette tenet tete eee ease e eee RANGE COMMANDS aennnnrovnnvnvvvennrrvnnnnrnvrnnnnnsrrnennrnererrennnnnn HOLD COMMANDS eceeccceee eet tetera eee teneeeee nena nenen ZERO COMMAND i scene esac aran nannaa daaa E ES RELATIVE COMMANDS 0 eee etter treet teens MEASUREMENT COMMAND 0 0 eee cece eee e eee eee ANALOG OUTPUT COMMAND mnnnnvronnnnnrrennnnvrnnnnnvvrnnnrrnrer enn OPERATION COMPLETE STATUS eee MODEL 5100 ERROR CODES 0 ee ete teeeeeeee ee WARRANTY NOTICE See Pages 3 1 and 3 2 for SAFETY instructions prior to first use List of Illustrations Figure 1 1 Figure 1 2 Figure 1 3 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure 3 10 Figure 3 11 Figure 3 12 Figure 3 13 Figure 3 14 Figure 3 15 Figure 3 17 Figure 3 18 Figure 3 19 Figure 3 20 Figure 3 21 Figure 3 22 Figure 3 23 Figure 3 24 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 4 7 Figure 4 8 Flux Lines of a Permanent Magnet 08 1 1 Hall Generator ornnnrnnrnnrnnnnvnnnnannnvrnnnrrnnrrrrnnnnnnnnn 1 2 Hall Probe Configurations
5. N A 1 additional 8 counts tolerance for signals lt 4 of lowest ranae and gt 2kHz ACCURACY Analog Output of Model 5180 of Reading mV DC MODE Low Range Mid amp High Ranges Peak Hold Acquisition Time DC or AC mode 128 us minimum DC mode 3 Vdc AC mode 3 Vrms Analog Output Noise Hi Range 1 5mV rms Mid Range 4 5mV rms Low Range 15 5mV rms Analog Output Scaling AC MODE for sinewave gt 6G or 0 6mT 2 10 20Hz 20 5000Hz Analog output 3dB point is approximately 22kHz Analog Output Load 10 kOhm min 100 pF max Accuracy Change with Temperature not including probe 0 20 C and 26 50 C typical Low Range 0 25 3 0 counts C Mid amp High Ranges 0 02 0 2 counts C Delay Time 30us Sample Rate 8us with variable moving average filtering Risetime DC Mode 250us DC peak hold 60us AC Mode and AC Peak Hold from 30us to 2ms depending on freq 2 additional 8 mV tolerance for signals lt 4 of lowest range and gt 2kHz Regulatory Information Compliance was demonstrated to the following specifications as listed in the Battery Type 1 5V AA x4 official Journal of the European Communities Battery Life 20 hours typical alkaline batteries f f Auxilliary Power 5 Vdc 300 mA Regulated EN 61326 1 1997 A1 1998 Electrical equipment for measurement control Auxilliary Power Connector Standard 2 5mm I D 5 5mm and lab
6. e seeeeeeeeeeeeees 1 3 Standard Transverse Probe 2 3 Standard Axial Probe rrnnnrrrrrnnnnnnnnnnrnnarrrnnrnnnnnnn 2 4 Low Field Axial Probe essseeeeeeeeeeeeeeeeeees 2 5 Zero Flux Chambet c cceeeceeeeeeeeeeeeeeeeeeeees 2 6 Auxiliary Power Connector Warning6 05 3 1 Probe Electrical Warning e eeeseeeeeeeeeeeees 3 1 Operating Features cccccseeeeecceeeeeeeeeeeeeeeeeeees 3 2 Battery Installation eeren 3 3 Probe Connection arnannnnnnnnrnnnnnnnnnnnnnnnnrnnnnrnnnnnnne 3 3 Power Up Display 2 cc ccseeccecceeeeeeeeeeeeeeeaeaes 3 4 Missing Probe Indication ceccceeeeeeeeeeeeees 3 4 Low Battery Indication 3 6 Overrange Indication c cceceeeeeeeeeeeeteeeeteees 3 6 MODE AC DC Function 3 6 UNITS Function ccccceeeeeeeeceeeeeeeeeeeeeeeeeeeeeeeees 3 6 RANGE Function ie kein e a a a 3 7 HOLD FUnCtiON eirean tnak ridea ar aa based adr 3 8 Automatic ZERO Function 3 11 Manual ZERO Fun ction c ceeseeeeecteeeeeeeeees 3 12 Automatic RELATIVE Function 3 14 Manual RELATIVE Function 3 15 OUTPUT Function rrrrrrnrrennnvnrrnnrnrrnnnrrrrnnrrnnnnene 3 16 Analog Output Display rrrrrrrnrrnnnrnrrrnnvrnnnnrrrnnnnn 3 17 Adjusting the DC Offset of the Analog Output 3 18 Probe Output versus Flux Angle 3 19 Probe Output versus Distance rrrsnnnnnnnnnnnnnnnnn
7. indications The error message will provide more detailed information about the errors The error buffer can be read and cleared with the following commands SYSTem ERRor Returns the next error message and removes it from the error buffer SYSTem CLEar Removes all messages from the error buffer If the meter detects an error in the command string a spelling error a command that is not supported or a numerical value that is incorrect the meter will not execute the command If the error is detected in the middle of a multiple command string the command that contains the error and all commands that follow will not be executed The user s program should always check the STATUS BYTE to determine if an error has occurred ERROR CODE LIST NO ERROR NOT IN MEASURE MODE NUMERIC DATA ERROR ILLEGAL PARAMETER ERROR INPUT BUFFER OVERRUN INVALID SEPARATOR SYNTAX ERROR COMMAND ERROR INVALID METER CAL DATA UNABLE TO READ PROBE CAL DATA INVALID PROBE CAL DATA INVALID PROBE CAL DATA INVALID PROBE CAL DATA INVALID PROBE CAL DATA METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR METER CALIBRATION ERROR 4 15 METER CALIBRATION ERROR STATUS COMMANDS The STATUS commands control and query the MEASUREMENT EVENT OPERATION EVENT and QUESTIONABLE EVENT registers STATus MEASurement EVENt STATus OPERation EVEN
8. 004 PENE STH17 0402 coo note 0 030 0 05 Ezg GE GaussPC ec DC to 10kHz STH17 0402 DIA NOM typical typical HTH17 0604 4 foto ALUMINUM 1 0 20KG DC to 10kHz 004 3003 HTD18 0604 EE FH 0 0 5 30kG 7 050 020 0 030 PN 0 10kG Note Due to continuous process improvement specifications are subject to change without notice Prior to late 2006Transverse Probe Stems were rigid glass epoxy 150 x 040 DC to 20kHz 0 025 0 200 DIA NOM Gauze pel 0 1 PC DC only ig 2 10 t 250 vas Bo z CABLE LENGTH FW BELL B FIELD 1 524 m 5 4 DIRECTION b 350 010 gt D SENSOR LOCATION DIAMETER gt 4 1 831 gt 4 3 mm 40 3 mm NOMINAL 170 4 010 492 NOMINAL Figure 2 1 Standard Transverse Probe 2 3 STANDARD AXIAL PROBE Model Number 5180 SAD18 1904 5180 gaussmeter probes 5170 SAH17 1904 SAD18 1904 4 Axial Probe SAD18 1902 2 Axial Probe Flux Density Range 5180 0 to 30 kG 0 to 3 T 5170 0 to 20 KG 0 to 2 T 5170 gaussmeter probes SAH17 1904 4 Axial Probe Corrected Linearity 5180 0 5 to 30kG SAH17 1902 2 Axial Probe 5170 1 0 to 20kG Frequency Bandwidth 5180 0 to 25 kHz 5170 0 to 10 kHz Offset change with Temperature 300 mG C typical Accuracy change with Temperature 0 05 C typical Operating Temperature Range 0 to 75 C 32 to 167F Storage Tem
9. UNITS AUTO my PANA W OUTPUT H Erg X wet 7 Se Se DE Figure 3 3 Operating Features INSTRUMENT PREPARATION 1 With the power switch turned off apply pressure to the battery compartment cover at the point shown in Figure 3 4 Slide the cover open and remove 2 Install four AA 1 5V alkaline batteries The battery compartment is designed to indicate the battery polarity Reinstall the battery compartment cover 3 If using an AC to DC power supply review Figure 3 1 for safety notes and the SPECIFICATIONS section for voltage and current ratings 4 Install the probe by matching the keyway in the connector to that in the mating socket in the meter The connector will lock in place when fully installed To disconnect pull on the body of the connector not the cable USB ANALOG POWER PROBE OUTPUT 4 AA 1 5V Batteries Figure 3 5 Probe Connection Figure 3 4 Battery Installaltion 3 3 POWER UP Press the POWER switch There will be a momentary audible beep and all display segments will appear on the display The instrument will conduct a self test before measurements begin If a problem is detected the phrase Err will appear on the display followed by a 3 digit code The circuitry that failed will be retested and the error code will appear after each failure This process will continue indefinitely or until the circuitry passes the test A condition in which a circuit fails and the
10. arrow pushbuttons to select G T or Am on the display This setting is saved and will be restored the next time the meter is turned on a Figure 3 11 UNITS Function 3 6 RANGE SELECTION The meter is capable of providing flux density measurements on one of three fixed ranges or it can be programmed to automatically select the best range for the present flux density The available ranges are listed in the SPECIFICATIONS section of this manual The ranges advance in decade steps The lowest range offers the best resolution while the highest range allows higher flux levels to be measured In the autorange mode the range is advanced if the reading reaches 95 of the present range The range is lowered when the reading falls below 9 of full scale for the present range The speed at which the readings are updated decreases slightly when AUTO ranging is used NOTE The AUTO range selection will be canceled if the RELATIVE mode is turned on To choose the desired range press the RANGE pushbutton The RANGE legend will flash Press the UP 5 and DOWN 6 pushbuttons to select the desired range To choose AUTO RANGE on the display press the SHIFT pushbutton followed by the RANGE pushbutton This setting is saved and will be restored the next time the meter is turned on Figure 3 12 RANGE Function 3 7 HOLD MODE SELECTION In some applications it may be desirable to hold a reading that is either greater than or less
11. if the RELATIVE mode is turned on and the AUTO RANGE feature is activated the RELATIVE mode is disabled 2 If the meter is in the RELATIVE mode and a ZERO function is selected either MANUAL ZERO or AUTO ZERO the RELATIVE mode is disabled There may be situations when the user may prefer to shield the probe from all external magnetic fields prior to performing a RELATIVE operation Provided with the meter is a ZERO FLUX CHAMBER which is capable of shielding against fields as high as 30mT 300G or 23 88kA m The probe is simply inserted into the chamber before the RELATIVE operation begins NOTE The RELATIVE mode is disabled when the probe and meter are zeroed or if the meter s power is cycled NOTE If the analog output is being used the output signal will continue to represent the flux density as seen by the probe The analog output is not affected by the RELATIVE operation Handle the Hall probe with care Do not bend the stem or apply pressure to the probe tip as damage may result Use the protective cover when the probe is not in use 3 13 AUTOMATIC RELATIVE MODE In the automatic relative mode the present flux density as seen by the probe is used as the relative offset value Prepare the probe and select an appropriate range and mode AC or DC as needed AUTO RANGE is deactivated when RELATIVE MODE is used To automatically assign the current reading as the relative offset value press the REL key The AUTO and RELATIV
12. output will now be 0 32VDC because of the range change This can lead to problems if the analog signal is being used to make decisions since there is no indication that a range change has occurred In these situations it is best to select a fixed range that covers the expected flux density span The analog output signal contains both the DC and AC components of the flux density signal This means that it will also contain any initial DC offsets in the probe and the meter s circuitry These offsets can be removed by the ZERO function The ZERO function can also be used to introduce a DC offset if desired This is useful when observing AC waveforms in which one portion of the waveform is being clipped because it exceeds the 4 25VDC limit of the meter Using the ZERO function the center of the waveform can be moved to reduce or eliminate the clipping as depicted in the figure below BEFORE ZERO ADJUSTMENT AFTER ZERO ADJUSTMENT Figure 3 21 Adjusting the DC Offset of the Analog Output 3 18 SOURCES OF MEASUREMENT ERRORS When making flux density measurements there are several conditions that can introduce error 1 Operating the meter while the LOW BATTERY symbol appears Instrument specifications are not guaranteed when a low battery condition exists 2 Failure to zero the error signals from the meter probe and nearby sources of magnetic interference 3 Subjecting the probe to physical abuse 4 One of the most common sources of e
13. signal of equal magnitude with opposite polarity After zeroing the only dc signal that remains is that produced by the probe when exposed to magnetic flux NOTE Zeroing the meter and probe affects only the static DC component of the flux density signal NOTE The process of zeroing also affects the analog signal There may be situations when the user prefers to shield the probe from all external magnetic fields prior to zeroing Provided with the meter is a ZERO FLUX CHAMBER which is capable of shielding against fields as high as 30 mT 300 G or 23 88 kA m The probe is simply inserted into the chamber before the zeroing process begins A Handle the Hall probe with care Do not bend the stem or apply pressure to the probe tip as damage may result Use the protective cover when the probe is not in use In other situations the user may want the probe to be exposed to a specific magnetic field during the zeroing process so that all future readings do not include that reading such as the earth s field This is possible with the following restrictions 1 The external field must not exceed 30 mT 300 G or 23 88 kA m 2 The field must be stable during the zeroing process It should not contain alternating AC components AUTOMATIC ZERO FUNCTION The meter provides two methods to zero the probe The first is completely automatic Prepare the probe for zeroing then press the ZERO pushbutton The ZERO icon will flash and actual
14. than all previous readings or which has the greatest peak value whether positive or negative The MAX HOLD function holds the reading that is arithmetically greater than all previous readings For instance a reading of 125 0 is greater than 99 0 or 150 0 The MIN HOLD function holds the reading that is arithmetically less than all previous readings For instance a reading of 125 0 is less than 99 0 or 150 0 The PEAK HOLD function captures and holds the peak value of the flux density waveform within the response time capabilities of the meter See the SPECIFICATIONS section of this manual for more information The peak can be either positive or negative whichever has the greatest magnitude For instance a peak value of 100 0 is greater than a peak value of 90 0 To choose the desired hold mode press the SHIFT pushbutton followed by the RESET pushbutton Press the LEFT 3 and RIGHT 4 arrows to select the desired mode on the display MAX HOLD is indicated by MX MIN HOLD is indicated by MN PEAK HOLD is indicated by PK The OFF legend will appear when all HOLD modes are turned off Difference between PEAK and MAX for AC Max is the maximum rms value PEAK gives the value of the point on the waveform with the greatest amplitude oL MNEIMX E PK Figure 3 13 HOLD Function 3 8 MIN MAX HOLD USAGE See the SPECIFICATIONS section for response time information The MAX HOLD function holds the reading th
15. the offset value Press the SHIFT pushbutton followed by the ZERO pushbutton to return to normal operation Auto Relative To select AUTO RELATIVE operation press the RELATIVE pushbutton Unit automatically returns to normal operation AUTO RELATIVE automatically turns the relative offset ON Push again to turn OFF Manual Relative To select MANUAL RELATIVE operation press the SHIFT pushbutton followed by the RELATIVE pushbutton Press the LEFT 3 arrow pushbutton to turn offset ON Press the RIGHT 4 arrow pushbutton to turn offset OFF Use the LEFT 3 and RIGHT 4 arrow pushbuttons to select digit Use the UP 5 and DOWN 6 arrow pushbuttons to make fine adjustments as needed Press the RESET pushbutton to clear the offset value Press the SHIFT pushbutton followed by the RELATIVE pushbutton to return to normal operation Auto Range To select AUTO RANGE operation press the SHIFT pushbutton followed by the RANGE pushbutton Press the SHIFT pushbutton followed by the RANGE pushbutton to exit Auto Range mode Manual Range To select MANUAL RANGE operation press the RANGE pushbutton Press the UP 5 and DOWN 6 arrow pushbuttons to select ranges Press the RANGE pushbutton to return to normal operation Units To select UNITS press the SHIFT pushbutton followed by the LEFT 3 arrow pushbutton Press the UP 5 and DOWN 6 arrow pushbuttons to select flux density readings in gauss tesla or ampmeters Press the SHIFT pushbutton follo
16. 3 19 Flux Density Variations in a Magnet 5 3 20 Condition Event and Enable registers 4 5 Status Byte and Enable registers 4 5 Standard Event register eenen 4 7 Measurement Event register 4 8 Operation Event register eeen 4 8 Questionable Event register ceceeeeeeeeeeees 4 8 List of Tables Table 4 1 Table 4 2 Common Command Summary SCPI Command Summary Statement regarding improvements to 5100 Series Gaussmeters The 5100 Series Gauss Tesla Meters now have improved AC performance and several operational improvements as a result of new DSP and microcontroller firmware Customers with meters manufactured prior to June 2007 and firmware versions below r2 00 and d2 00 should review this manual for changes in specifications Certain operational sequences have been made more intuitive and require fewer keystrokes Refer to the appropriate section of the Operator s Manual for details Summary of changes Auto Relative now toggles On Off with just 2 keystrokes e Settings for HOLD and Probe Zero are no longer retained when powered on off This often lead to the false appearance that the meter was malfunctioning in previous firmware versions Analog Output now automatically applies optimum filtering to the signal therefore the options of LO and HI have been removed and it is simply an On Off selection e Peak Hold has been greatly improved wit
17. 66 Amplifier gain error Internal meter problem 067 High input resistance Broken probe or meter problem Most errors result from a damaged probe If an error code for a probe related type of problem appears substitute another probe if one is available 4 23 WARRANTY This instrument is warranted to be free of defects in material and workmanship Sypris Test amp Measurement s obligation under this warranty is limited to servicing or adjusting any instrument returned to the factory for that purpose and to replace any defective parts thereof This warranty covers instruments which within one year after delivery to the original purchaser shall be returned with transportation charges prepaid by the original purchaser and which upon examination shall disclose to Sypris Test amp Measurement s satisfaction to be defective If it is determined that the defect has been caused by misuse or abnormal conditions of operation repairs will be billed at cost after submitting an estimate to the purchaser Sypris Test amp Measurement reserves the right to make changes in design at any time without incurring any obligation to install same on units previously purchased THE ABOVE WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED AND ALL OTHER OBLIGATIONS AND LIABILITIES ON THE PART OF SYPRIS TEST amp MEASUREMENT AND NO PERSON INCLUDING ANY DISTRIBUTOR AGENT OR REPRESENTATIVE OF SYPRIS TEST amp MEASUREMENT IS AUTHORIZ
18. AC TESLa Specifies ac flux density readings in tesla UNIT FLUX AC AM Specifies ac flux density readings in ampmeters UNIT FLUX DC GAUSs Specifies dc flux density readings in gauss UNIT FLUX DC TESLa Specifies dc flux density readings in tesla UNIT FLUX DC AM Specifies dc flux density readings in ampmeters UNIT FLUX Returns an ASCII string representing the present mode setting for the meter The ASCII string can be DC GAUSS AC GAUSS DC TESLA AC TESLA AC AM or DC AM RANGE COMMANDS These commands select either a fixed range or AUTO range See Section 3 for more information SENSe FLUX RANGe AUTO Selects the AUTO RANGE function SENSe FLUX RANGe lt n gt Selects a fixed range lt n gt where n 0 for 300 G 30 mT 23 88 kA m 1 for 3 KG 300 mT 238 8 kA m 2 for 30 KG 3 T 2388 kA m SENSe FLUX RANGe Returns an ASCII digit representing the present range setting for the meter as follows 0 for 300 G 30 mT 23 88 kA m 1 for 3 KG 300 mT 238 8 kA m 2 for 30 KG 3 T 2388 kA m 4 18 HOLD COMMANDS These commands select one of the HOLD modes or resets the presently held reading See Section3 for more information SENSe HOLD STATe lt n gt Selects the HOLD function where lt n gt is a single ASCII digit as follows 0 All HOLD modes turned off 1 MIN HOLD on 2 MAX HOLD on 3 PEAK HOLD on SENSe HOLD STATe Returns an ASCII digit representing the present HO
19. E icons will flash momentarily indicating the operation When complete the unit will return to the measurement mode and the RELATIVE icon will be on indicating that a relative value is being subtracted from all subsequent readings To deactivate the relative mode press the SHIFT key followed by the REL key Difference between ZERO and RELATIVE ZERO introduces an electrical offset signal into the circuitry RELATIVE is strictly a mathematical process Figure 3 17 AUTOMATIC RELATIVE Function 3 14 MANUAL RELATIVE MODE The second method by which to set a relative value is a manual adjustment In some cases the user will wish to set an absolute relative value To do this insert the probe in the zero flux chamber provided with this meter To manually assign a relative offset value press the SHIFT key followed by the REL key At this point the RELATIVE icon will be flashing and actual flux density readings will be displayed Use the LEFT RIGHT UP and DOWN arrow keys to select a desired offset When complete press the SHIFT key followed by the REL key to exit and return to the measurement mode The RELATIVE icon will be on indicating that a relative offset is being subtracted from all incoming readings In other cases the probe may be positioned in a stable DC or AC magnetic field that does not exceed the present range limit In most cases the reading will be adjusted to zero so that the value of the reference is subtracted from all in
20. ED TO ASSUME FOR SYPRIS TEST amp MEASUREMENT ANY LIABILITY ON ITS BEHALF OR ITS NAME EXCEPT TO REFER THE PURCHASER TO THIS WARRANTY THE ABOVE EXPRESS WARRANTY IS THE ONLY WARRANTY MADE BY SYPRIS TEST amp MEASUREMENT SYPRIS TEST amp MEASUREMENT DOES NOT MAKE AND EXPRESSLY DISCLAIMS ANY OTHER WARRANTIES EITHER EXPRESSED OR IMPLIED INCLUDING WITHOUT LIMITING THE FOREGOING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ARISING BY STATUE OR OTHERWISE IN LAW OR FROM A COURSE OF DEALING OR USAGE OR TRADE THE EXPRESS WARRANTY STATED ABOVE IS MADE IN LIEU OF ALL LIABILITIES FOR DAMAGES INCLUDING BUT NOT LIMITED TO CONSEQUENTIAL DAMAGES LOST PROFITS OR THE LIKE ARISING OUT OF OR IN CONNECTION WITH THE SALE DELIVERY USE OR PERFORMANCE OF THE GOODS IN NO EVENT WILL SYPRIS TEST amp MEASUREMENT BE LIABLE FOR SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES EVEN IF SYPRIS TEST amp MEASUREMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES This warranty gives you specific legal rights and you may also have other rights that vary from state to state
21. LD mode setting as follows 0 All HOLD modes turned off 1 MIN HOLD on 2 MAX HOLD on 3 PEAK HOLD on SENSe HOLD RESet This command resets the presently held reading 4 19 ZERO COMMAND This command initiates an automatic ZERO operation See Section3 for more information SYSTem AZERo Automatic zeroing is initiated upon receipt of this command RELATIVE COMMANDS These commands control the RELATIVE function See Section 3 for more information SYSTem ARELative STATe lt n gt The relative function is turned off when lt n gt is 0 When lt n gt is 1 the relative function is turned on using the previously generated relative value if any When lt n gt is 2 the relative function is turned on and an automatic relative operation is initiated SYSTem ARELative STATe Returns a single ASCII digit indicating the on off state of the relative function A 0 indicates the relative function is turned off A 1 indicates the relative function is turned on MEASUREMENT COMMAND This command acquires a new flux density reading MEASure FLUX This command returns the latest flux density reading The returned string will contain a signed real number and a unit indicator G T or Am If in the ac mode the reading will not contain a polarity character or The ranges of possible readings for the various units of measure are 0 0G to 29990G 0 00000T to 2 999T 0Am to 2 388 000Am 4 20 ANALOG OUTPUT COM
22. MAND This command enables or disables the ANALOG OUTPUT See Section3 for more information SYSTem OUT lt n gt Enables or disables the ANALOG OUTPUT where lt n gt is a single ASCII digit as follows 0 Analog output turned off 1 Analog output turned on 2 Analog output turned on Note 2 is an obsolete argument but still supported for backward compatibility with customer s existing software INTERMIXING COMMON AND SCPI COMMANDS As mentioned earlier a string sent to the instrument can contain more than one command as long as the commands are separated by semicolons Common and SCPI commands can be intermixed For instance the string CLS UNIT FLUX DC TESLA MEASure FLUX is valid first clearing the instrument s event and error registers then programming it to supply readings in tesla in the dc mode and requesting the latest reading The host system should be prepared to receive the reading immediately after transmitting this command string to the meter USING QUERY COMMANDS When any query command is issued the meter will send its response back immediately However if a query command is part of a multiple command string the meter will transmit the response after all commands within the string have been executed For instance here is such a string UNIT FLUX DC GAUSS MEAS FLUX UNIT FLUX DC TESLA MEAS FLUX In this string the meter is programmed for DC GAUSS mode and a measurement is requested Th
23. ON Power On Standard Event register Indicates that the meter was turned off and on since the last communication CME Command Error Indicates that there was a syntax or spelling error in the command or the command received is not supported EXE Execution Error Indicates that the meter detected an error while attempting to execute a command DDE Device Dependent Error Indicates that the meter did not operate properly due to some internal error OPC Operation Complete Indicates that all requested operations have been completed 4 7 MEASUREMENT EVENT REGISTER If any of these bits set and their respective enable bits are set the Measurement Summary Bit MSB will set in the STATUS BYTE 7 6 5 4 3 2 1 O RAV ROF Figure 4 6 Measurement Event register ROF Reading Overflow Indicates that the present reading exceeds the present measurement range RAV Reading Available Indicates a reading was acquired and processed OPERATION EVENT REGISTER If any of these bits set and their respective enable bits are set the Operation Summary Bit OSB will set in the STATUS BYTE 7 6 3 4 5 2 1 O MEAS E i Figure 4 7 Operation Event register MEAS Measure mode Indicates the meter is in the process of acquiring and processing a reading QUESTIONABLE EVENT REGISTER If any of these bits set and their respective enable bits are set the Que
24. age and exports very low level generic USB access functions These are not specific to the 5180 and would not likely do our customers much good in their development of software to communicate with the 5180 This is an open source project and info is available on the web at http libusbwin32 sourceforge net and probably several other related sites if the customer has a need for this information 4 4 STATUS BYTE AND REQUEST FOR SERVICE RQS A bit in the STATUS BYTE called RQS request for service sets whenever an event occurs that requires the attention of the computer The RQS bit can set if any of the summary bits from the MEASUREMENT EVENT OPERATION EVENT STANDARD EVENT or QUESTIONABLE EVENT registers are set or if an error message exists The STATUS ENABLE register is a mask register that is used to allow any of these conditions to set the RQS bit Setting any bit in the STATUS ENABLE register to 1 will allow a corresponding 1 in the STATUS BYTE register to set the RQS bit These registers are depicted in Figure 4 4 CONDITION REGISTER 7 6 5 4 3 2 1 0 STATUS BYTE REGISTER STATUS SUMMARY BITS 7 OSB EVENT REGISTER 7 6 5 4 3 2 1 0 OR gt STATUS BYTE FLL ENABLE REGISTER 7 6 5 4 3 2 1
25. alkaline batteries When the battery voltage becomes too low the battery symbol on the display will flash as shown in Figure 3 8 Replace the batteries or use an external AC to DC power supply Figure 3 8 Low Battery Indication SL Z Instrument specifications are not guaranteed when a low battery condition exists DC a am a OVERRANGE CONDITION eae Mt am If the magnitude of the magnetic flux density exceeds the limit of the selected range the meter F N will display a flashing value of 2999 gauss or tesla mode or 2387 ampere meter mode The next highest range should be selected If already on the highest range then the flux density is too great to be measured with this instrument Figure 3 9 Overrange Indication AC OR DC MEASUREMENT SELECTION The meter is capable of measuring either static DC or alternating AC magnetic fields To BE choose the desired mode Press the SHIFT pushbutton followed by the right 4 arrow to select AC or DC on the display The DC and AC mode is discussed in more detail later in this section This setting is saved and will be restored the next time the meter is turned on UNITS OF MEASUREMENT SELECTION Figure 3 10 The meter is capable of providing flux density measurements in terms of gauss G tesla T MODE AC DC Function or ampere meters A m To choose the desired units Press the SHIFT pushbutton followed by the left 3 arrow pushbutton Press the up 5 and down 6
26. at is arithmetically greater than all previous readings The MIN HOLD function holds the reading that is arithmetically less than all previous readings These modes are useful in determining the maximum or minimum value of magnetic events that occur over a period of time If the reading exceeds the range limit the 5180 meter will hold a flashing value of 2999 gauss or tesla mode 2387 ampere meter mode or the maximum value allowed in the RELATIVE mode The 5170 meter will hold a flashing value of 1999 gauss or tesla mode 1592 ampere meter mode or the maximum value allowed in the RELATIVE mode The held value can be reset by pressing the RESET pushbutton The next value displayed after a reset will be the present value of flux density For instance if the held reading is 200 0 G and the present flux density is 100 0 G the meter will display 100 0 G after the reset If the analog output is being used the output signal will continue to represent the real time flux density as seen by the probe It is not affected by the HOLD function PEAK HOLD USAGE See the SPECIFICATIONS section for response time and accuracy information In the PEAK HOLD mode the input signal is sampled many times each second Each sample is compared to all previous samples and that which has the greatest amplitude regardless of polarity is held on the display This mode can be used to capture the peak value of a fast onetime magnetic event such as a magnetiz
27. automatic mode zero operation UNIT FLUX AC TESLa Program ac tesla mode SYSTem ARELative STATe lt n gt Program relative mode UNIT FLUX AC AM Program ac amp meter SYSTem ARELative STATe Query relative mode mode setting UNIT FLUX DC GAUSs Asr dc gauss MEASUREMENT COMMANDS DESCRIPTION moce MEASure FLUX Obtain flux density UNIT FLUX DC TESLa Program dc tesla mode reading UNIT FLUX DC AM Program dc A M mode UNIT FLUX Query mode setting ANALOG OUTPUT COMMANDS DESCRIPTION SYSTem OUT lt n gt Enable disable analog RANGE COMMANDS DESGRIPTION output SENSe FLUX RANGe AUTO SENSe FLUX RANGe lt n gt Program fixed range SENSe FLUX RANGe Query range setting HOLD COMMANDS DESCRIPTION SENSe HOLD STATe lt n gt Program hold mode SENSe HOLD STATe Query hold mode setting SENSe HOLD RESet Reset presently held value Table 4 2 SCPI Commands ERROR MESSAGES AND COMMANDS If an error occurs a message is placed in the error buffer The message will contain a number a comma and a brief description of the error Negative numbers are used for SCPI defined messages while positive numbers relate specifically to the meter Each time the buffer is read the next error message is returned and then removed from the buffer If no error exists the message 0 No error will be returned There are certain error status bits that will set in the STANDARD EVENT register These bits provide general error
28. cific command 3 The ENABLE register is a mask register that is used to generate the single status bit for the STATUS BYTE Setting any bit in the ENABLE register to 1 will allow a corresponding 1 in the EVENT register to set the summary bit in the STATUS BYTE 4 2 Information for Remote Operation of 5180 Gaussmeter There are 2 DLL files which should be installed when you run the setup program from the 5180 User manual CD They are libusbO dll and usb5100 dil They should have installed to your system when you ran the installation from the CD Note These files allow communication with the 5180 by higher level programming languages such as various types of C C or C VisualBasic or development programs like LabView Agilent VEE or TestPoint which can make calls to a DLL file The function definitions are given near the bottom of this page The earlier versions of the software may not work with an Intel dual core processor There are 3 functions in the usb5100 dll you will need to call to communicate with the 5180 1 The first is openUSB5100 and returns a 4 byte integer unsigned long in C which is the USB handle for the device being communicated with You may communicate with more than one 5180 but you will need to keep track of the handle for each unit because the handle must be passed to the other 2 functions when calling them Example call openUSB5100 and it should return a value for example 10203045 or some other n
29. colon 2 The commands are not case sensitive For instance the MEASURE measure and MEASure commands are identical 3 A question mark in a command means that the command is requesting information from the instrument This is called a query command 4 For any command there is a short and long spelling of the command Use the following rules for the short version a If the length of the command is four letters or less there is no short version b If the command has more than four letters and the fourth letter is a vowel drop it and all letters that follow it For instance the command RESET can be shortened to RES c If the command has more than four letters and the fourth letter is a consonant drop all letters that follow it For instance the command MEASURE can be shortened to MEAS d If the command contains a question mark or a non optional parameter it must be included after the short form version For instance a query command of CONDITION can be shortened to COND e The use of anything other than the short or long version of a command is not permitted For instance both the MEASURE and MEAS commands are acceptable but MEASU is not 5 If a parameter follows a command it must be separated from the command by one space 6 Multiple commands can be sent in one string The commands must be separated by semicolons A colon must still precede each command If more than one of the commands in the string
30. coming readings To deactivate the manual relative mode press the SHIFT key followed by the REL key The meter will enter the MANUAL RELATIVE mode Press the LEFT arrow key until the OFF icon turns on then press the SHIFT key followed by the REL key to exit and return to the measurement mode Alternatively from within the MANUAL RELATIVE mode Press the RESET key to clear the relative offset value Press the SHIFT key followed by the REL key to exit and return to the measurement mode A Handle the Hall probe with care Do not bend the stem or apply pressure to the probe tip as damage may result up IS N Z an RELATIVE FIN ON J Figure 3 18 MANUAL RELATIVE Function 3 15 ANALOG OUTPUT FUNCTION The 5180 meter is capable of providing an analog voltage signal proportional to the present flux density level Calibration is set to 3 0V full scale DC or 3 0VRMS AC depending upon the mode of operation This signal available at the BNC connector can be connected to a voltmeter oscilloscope recorder data logger or external analog to digital converter Power consumption increases when using the analog output If use of the analog output port is unnecessary maximize battery life by disabling the analog output feature To toggle the analog output on or off simply press the SHIFT key followed by the UP arrow key The ANALOG ON icon will turn on when the analog output feature is active Figure 3 19 Output Fun
31. ction 3 16 ANALOG OUTPUT USAGE See the SPECIFICATIONS section for frequency range and accuracy of the analog output The analog output signal is calibrated to 3VDC or 3VRMS depending on the selected mode The analog output voltage is proportional to the flux density being measured depending on the meters current range For instance when in the 30mT DC range a reading of 12 3mT relates to an analog output voltage of 1 23VDC When in the 3 T range a reading of 1 23T produces the same output 1 23VDC The analog output can reach a maximum output of about 4 25VDC in order to accommodate the peak value of a 3VRMS AC signal This means that the analog output can be used to measure flux density levels that exceed the normal range of the displayed readings For instance a level of 31 5mT in the 30mT range would normally result in a flashing 29 99mT overrange condition However the output will still be 3 15VDC The meter will apply an optimum amount of low pass filtering to the analog output signal based on the frequency of the detected magnetic field and mode of operation AC or DC mode Figure 3 20 Analog Output Display 3 17 When both the ANALOG OUTPUT and AUTO RANGE features are active the following condition can occur Suppose the present range is 3kG and the present reading is 2 8kG The analog output will be 2 8VDC The signal then increases to 3 2kG which would force an automatic change to the 30kG range setting The analog
32. d term is the tesla T which is 10 000 lines per cm Thus 1 tesla 10 000 gauss 1 gauss 0 0001 tesla Magnetic field strength is a measure of force produced by an electric current or a permanent magnet It is the ability to induce a magnetic field B It is commonly assigned the symbol H in scientific documents The unit of H in the CGS system is an oersted Oe but the ampere meter Am is more commonly used The relationship is 1 oersted 79 6 ampere meter 1 ampere meter 0 01256 oersted It is important to know that magnetic field strength and magnetic flux density are not the same Magnetic field strength deals with the physical characteristics of magnetic materials whereas flux density does not The only time the two are considered equal is in free space air Only in free space is the following relationship true 1 G 1 Oe 0 0001 T 79 6 Am 1 1 Section 1 Introduction MEASUREMENT OF FLUX DENSITY A device commonly used to measure flux density is the Hall generator A Hall generator is a thin slice of a semiconductor material to which four leads are attached at the midpoint of each edge as shown in Figure 1 2 Hall Generator Figure 1 2 Hall Generator A constant current Ic is forced through the material In a zero magnetic field there is no voltage difference between the other two edges When flux lines pass through the material the path of the current bends closer to one edge creating a voltage di
33. dc flux density readings will appear on the display If the reading before zeroing the probe exceeds 30 mT 300 G or 23 88 kA m when the probe is in a zero chamber or very low field then the probe may be defective The meter will switch over to the DC mode of operation during zeroing Recall that the zeroing operation affects DC offsets only If you wish to suppress an AC field reading consider using the RELATIVE mode Figure 3 14 Automatic ZERO Function Once automatic zeroing begins it must be allowed to complete During this time all controls are disabled except for the POWER switch The process normally takes from 5 to 15 seconds The meter selects the lowest range and adjusts the nulling signal until the net result reaches zero At this point the automatic process is terminated and the flashing AUTO and the ZERO icons will disappear If the nulling process is successful the next highest range is selected No further electronic adjustments are made but at this stage a reading is acquired which will be mathematically subtracted from all future readings on this range This process is then repeated for the highest range When finished the meter will sound an audible beep and the flashing AUTO and ZERO icons will disappear At this point the automatic process can be repeated or a manual adjustment can be performed see Manual Zeroing The final zero values will remain in effect until the meter and probe are zeroed a
34. e USB5100 API decispec dllexport Helse define USB5100 API decispec dllimport endif extern C USB5100_API unsigned int openUSB5100 void extern C USB5100_API void closeUSB5100 unsigned int fwb5000ID extern C USB5100_API int scpiCommand unsigned int usbID 4 3 char cmd char result int len Other General 5180 File Information The basic calling sequence of executable and DLL files in the 5180 installation is as follows e PC5180 EXE is an executable application that provides the graphical meter interface on the computer s monitor This may be useful for some simple remote monitoring applications etc but is not very useful for integrating a 5180 into any sort of automated system or testing environment via any generic programming language PC5180 EXE calls functions that are exported by lib5100 DLL e Lib5100 DLL exports a collection of NET classes that handle the high level connection and display functions It calls functions that are exported by usb5100 DLL e Usb5100 DLL exports many functions that actually do the USB connection and communication with the 5180 meter This is the DLL that provides the functions used by the Sypris manufacturing test amp calibration system It calls functions that are exported by libusb0 dll The functions in this DLL should be able to be called by most higher level programming languages using the methods described earlier in this document e LibusbO DLL is part of the device driver pack
35. en the meter is programmed for DC TESLA mode and another measurement is requested When the meter has finished executing the entire command string it will transmit a string similar to this 1892G 0 1892T 4 21 USING THE OPERATION COMPLETE STATUS There are several ways to determine if the meter has executed a command If the command string contains a query command the program can simply wait for the meter to transmit its response But if the query command contains an error the command may never be executed Further some commands do not require a response The best way to handle all situations is to issue the OPC command once prior to sending any other commands This will cause the meter to always transmit an ASCII 1 each time it executes a command string If the command string contains one or more query commands the 1 will be appended to the end of the response separated by a semicolon For instance the response to the command string OPC UNIT FLUX AC GAUSS would be 1 whereas the response to a command string containing a query OPC MEAS FLUX might be 221 3G 1 4 22 MODEL 5100 ERROR CODES THAT MAY BE DISPLAYED IF THERE IS A PROBLEM Error Code Description of Error Possible problem 003 Invalid calibration data Meter not calibrated or data corrupt 040 Probe EPROM read error Probe EPROM missing or defective 060 ADC error Internal meter problem 061 AD zero error Internal meter problem 0
36. enens HOLD MODE SELECTION ee eects ee tee ee eeeeeees MIN MAX HOLD USAGE ereere eerren PEAK HOLD USAGE noiiire rinane i ZERO FUNGTION ersssesccsacsnisiscsopsuagsn nanaii AUTOMATIC ZERO FUNCTION vnnnnnvrovnvrrrvnnvervrennrnvnnnnnnrnn MANUAL ZERO FUNCTION arvrnrnnnnrvvnnrnrrrennrnvnnnnnnnrnnnnnrrrnen RELATIVE MODE pisken Sicnadecstasicnsgedei a aiai AUTOMATIC RELATIVE MODE 0 eee eee eee eet MANUAL RELATIVE MODE 000 000 eee cette teee ee eeeetees ANALOG OUTPUT FUNCTION 0000 occ tee eeeeees ANALOG OUTPUT USAGE rurnnnvrnnnnrnrrnnnrvvrnnnnnnvnnnnnnerravererrnn SOURCES OF MEASUREMENT ERRORS eree MORE DETAILS ON AC MODE OPERATION ssec MORE DETAILS ON DC MODE OPERATION Section 4 Remote Operation USB INTERFACE CONNECTION REMOTE COMMAND STANDARDS COMMAND FORMAT ERROR BUFFER iivcsesi discs sesctinttvestoceci a ete de ini STATUS REGISTERS 0 sirinin ee eee teres teeta ee eeeeenees INFORMATION FOR REMOTE OPERATION ee OTHER GENERAL 5180 FILE INFORMATION ossen STATUS BYTE AND REQUEST FOR SERVICE RQS STANDARD EVENT REGISTER arrrnnnnnnnnrrnnnnrrrennrrrvnnnrnrnnnn MEASUREMENT EVENT REGISTER 00 eee OPERATION EVENT REGISTER 00 eee terete QUESTIONABLE EVENT REGISTER eee COMMON COMMAND SYNTAX 0 cece cette eee eee COMMON COMMANDS eects este etree eeeeeenee eed SCPI COMMAND SYNTAX 0 0
37. ernal ACtoDC power supply A retractable stand allows the meter to stand upright on a flat surface The large display is visible at considerable distances The instrument is easily configured using a keypad Three measurement ranges can be selected or the meter can automatically select the best range based on the present flux density being measured A zero function allows the user to remove undesirable readings from nearby magnetic fields including earth s or false readings caused by initial electrical offsets in the probe and meter Included is a zero flux chamber which allows the probe to be shielded from external magnetic fields during this operation Another feature called relative mode allows large flux readings to be suppressed so that small variations within the larger field can be observed directly Both the zero and relative adjustments can be made manually or automatically Other features include three hold modes allowing either the arithmetic maximum minimum or instantaneous peak values to be held indefinitely until reset by the user An analog signal is available from a standard BNC 5180 only connector that is representative of the magnetic flux density signal and is calibrated to 3 volts full scale in dc mode or 3 Vrms in AC mode This output can be connected to a voltmeter oscilloscope recorder or external analog to digital converter The meter can be fully configured and flux density readings acqui
38. f the meter and probe are affected by temperature variations Refer to the SPECIFICATIONS section for the specific information MORE DETAILS ON AC MODE OPERATION It is possible for the flux density signal to contain both a DC component and an AC component In the AC mode the value displayed is the true RMS value of the waveform with its DC component removed However if the DC component is too high it may force the peak value of the waveform to exceed the electrical limits of the meter This could cause the waveform to clip and introduce errors in the final reading This can also lead to an overrange condition on the display and can lead to erratic behavior if the AUTO RANGE feature is active The presence of a clipped AC signal can be verified by observing the analog output signal As stated in the SPECIFICATION section the accuracy of the true RMS reading is only guaranteed for readings greater than about 4 of the full scale range For example this would be 1mT in the 300mT range Select a lower range if possible to maintain accuracy Refer to page 3 18 and figure 3 21 for more detailed information about reducing this type of error Clipped signals can also occur when observing higher frequency signals typically gt 10 kHz in the upper 30 of the selected range especially with a transverse probe In this case the next higher range should be used HALL GENERATOR FLUX I cables can result in measurement err
39. fference known as the Hall voltage Vh In an ideal Hall generator there is a linear relationship between the number of flux lines passing through the material flux density and the Hall voltage The Hall voltage is also a function of the direction in which the flux lines pass through the material producing a positive voltage in one direction and a negative voltage in the other If the same number of flux lines pass through the material in either direction the net result is zero volts This sensitivity to flux direction makes it possible to measure both static dc and alternating ac magnetic fields The Hall voltage is also a function of the angie at which the flux lines pass through the material The greatest Hall voltage occurs when the flux lines pass perpendicularly through the material Otherwise the output is related to the cosine of the difference between 90 and the actual angle 1 2 The sensitive area of the Hall generator is generally defined as the largest circular area within the actual slice of the material This active area can range in size from 0 2 mm 0 008 to 19 mm 0 75 in diameter Often the Hall generator assembly is too fragile to use by itself so it is often mounted in a protective tube and terminated with a flexible cable and a connector This assembly known as a Hall probe is generally provided in two configurations p Transverse Probe q K 00 Axial Probe Figure 1 3 Ha
40. fields during the ZERO or RELATIVE operations 8 7 mm DIAMETER X 50 8 mm 343 DIAMETER X 2 000 Figure 2 4 Zero Flux Chamber 2 6 Section 3 Operating Instructions OPERATOR SAFETY AN AN Do not allow the probe to come in contact with any voltage source greater than 30 Vrms or 60 Vdc Do not connect the auxiliary power connector to an AC power source Do not exceed 5 Vdc regulated Do not reverse polarity Use only a regulated AC to DC power supply certified for country of use i 5V OOO Figure 3 1 Auxiliary Power Connector Warnings A A Batteries contain ferrous materials that are attracted to magnetic fields Be careful when operating the instrument near large magnetic fields as it may move without warning gt 30V RMS 60V DC Figure 3 2 Probe Electrical Warning This symbol appears on the instrument and probe It refers the operator to additional information contained in this instruction manual also identified by the same symbol 3 1 OPERATING FEATURES Display Liquid crystal display LCD Auto Zero To select AUTO ZERO operation press the ZERO pushbutton Unit automatically returns to normal operation Manual Zero To select MANUAL ZERO operation press the SHIFT pushbutton followed by the ZERO pushbutton Use the LEFT 3 and RIGHT 4 arrow pushbuttons to select digit Use the UP 5 and DOWN 6 arrow pushbuttons to make fine adjustments as needed Press the RESET pushbutton to clear
41. gain NOTE Zeroing the probe cancels the RELATIVE mode if it was turned on 3 11 MANUAL ZERO FUNCTION The second zeroing method is a manual adjustment This feature also allows the user to set the zero point to something other than zero if desired Position the probe for zeroing then press the SHIFT pushbutton followed by the ZERO pushbutton The ZERO icon will flash and actual DC flux density readings will appear on the display The meter will select the lowest range regardless of which range was in use prior to selecting the ZERO function If the reading before zeroing the probe exceeds 30mT 300 G or 23 88 kA m when the probe is in a zero chamber or very low field then the probe may be defective The meter will switch over to the DC mode of operation during zeroing Recall that the zeroing operation affects DC offsets only If you wish to suppress an AC field reading consider using the RELATIVE mode By pressing the UP 5 or DOWN 6 arrows the reading will be altered Pressing the UP 5 arrow adds to the reading pressing the DOWN 6 arrow subtracts from the reading Figure 3 15 MANUAL ZERO Function NOTE Making a manual ZERO adjustment not only affects the lowest range but also the higher ranges to a lesser extent For example assume an automatic ZERO has already been performed after which all three ranges should read zero Now a manual adjustment is made that causes the reading on the lowest range to be nonze
42. h a shorter acquisition time USB Hub Compatibility Like many USB devices on the market such as printers and digital cameras operation of the 5180 with a USB hub may be problematic It is recommended that customers wishing to make use of the remote operation capabilities of the 5180 make a direct connection to their computer USB port and not use a hub Operation with a hub is not recommended Section 1 Introduction UNDERSTANDING FLUX DENSITY Magnetic fields surrounding permanent magnets or electrical conductors can be visualized as a collection of magnetic flux lines Lines of force existing in the material that is being subjected to a magnetizing influence Unlike light which travels away from its source indefinitely magnetic flux lines must eventually return to the source Thus all magnetic sources are said to have two poles Flux lines are said to emanate from the north pole and return to the south pole as depicted in Figure 1 1 S MAGNET N lt Figure 1 1 Flux Lines of a Permanent Magnet One line of flux in the CGS measurement system is called a maxwell M but the weber W which is 108 lines is more commonly used Flux density also called magnetic induction is the number of flux lines passing through a given area It is commonly assigned the symbol B in scientific documents In the CGS system a gauss G is one line of flux passing through a 1 cm area The more commonly use
43. ing pulse These are the differences between the PEAK HOLD mode and the MIN MAX HOLD modes The PEAK HOLD mode considers the magnitude of the reading regardless of the polarity The response time of the PEAK HOLD mode is much faster but final accuracy is less If the analog output is being used the output signal will continue to represent the real time flux density as seen by the probe It is not affected by the HOLD function 3 9 ZERO FUNCTION Zeroing the probe and meter is one of the most important steps to obtaining accurate dc flux density measurements The ideal Hall generator produces zero output in the absence of a magnetic field but actual devices are subject to variations in materials construction and temperature Therefore most Hall generators produce some output even in a zero field This will be interpreted by the meter as a flux density signal Also the circuits within the meter can produce a signal even when there is no signal present at the input This will be interpreted as a flux density signal Lastly magnetic sources close to the actual field being measured such as those from electric motors permanent magnets and the earth roughly 0 5 gauss or 50mT can induce errors in the final reading It is vital to remove these sources of error prior to making actual measurements The process of zeroing removes all of these errors in one operation The meter cancels the combined DC error signal by introducing another
44. ll Probe Configurations In transverse probes the Hall generator is mounted in a thin flat stem whereas in axial probes the Hall generator is mounted in a cylindrical stem The axis of sensitivity is the primary difference as shown by B in Figure 1 3 Generally transverse probes are used to make measurements between two magnetic poles such as those in audio speakers electric motors and imaging machines Axial probes are often used to measure the magnetic field along the axis of a coil solenoid or traveling wave tube Either probe can be used where there are few physical space limitations such as in geomagnetic or electromagnetic interference surveys A Handle the Hall probe with care Do not bend the stem or apply pressure to the probe tip as damage may result Use the protective cover when the probe is not in use 1 3 PRODUCT DESCRIPTION The MODEL 5170 5180 GAUSS TESLAMETER is a portable instrument that utilizes a Hall probe to measure magnetic flux density in terms of gauss tesla or ampere meter The measurement range is from 0 01 mT 0 1 G or 0 01 kA m to 3 000T 30 00 kG or 2388 kA m for the 5180 and 2 000T 20 00 kG or 1592 kA m for the 5170 The instrument is capable of measuring static DC and alternating AC magnetic fields The MODEL 5170 5180 consists of a palmsized meter and various detachable Hall probes The meter operates on 4 standard AA 1 5 volt alkaline batteries or can be operated with an ext
45. n a computer This software was supplied on the User s Manual CD for the meter however newer software may be available Please visit the F W Bell web site to download the latest software for the 5100 series meters and follow the instructions on the web site for installation REMOTE COMMAND STANDARDS Prior to 1987 most instruments that featured RS232 communications interfaces had their own unique commands for exchanging information Eventually some manufacturers began offering models that recognized other manufacturer s commands so that customers could easily switch over without making extensive changes to their programs The IEEE 488 1987 2 standard also called IEEE 488 2 was one step toward creating a universal way to communicate with any instrument regardless of the manufacturer or the type of instrument used This was later enhanced by the SCPI1991 Standard Software Commands for Programmable Instruments which defined specific commands and responses that covered a broad range of applications Though these standards were targeted for use with the IEEE488 instrumentation bus they are commonly used with serial RS232 interfaces as well The Model 5180 supports many of the IEEE 488 1987 2 common commands as well as a subset of the SCPI 1991 commands COMMAND FORMAT All commands consist of ASCII character strings Some commands contain numeric parameters that are used to set or reset individual bits within binary registers F
46. n passes should not be ignored because it indicates an intermittent problem that should be corrected If the self test is successful the meter will perform a self calibration During this phase the meter will display a calibration sequence CALX message Calibration will halt if there is no probe connected Until the probe is connected the phrase Err will appear accompanied by a flashing PROBE annunciator as shown in Figure 3 7 Per the SPECIFICATIONS section allow 15 minutes warmup time for rated accuracy The most common errors displayed are a result of damage to the sensing element located in the tip of the probe A damaged sensing element can result in the following error codes E064 and E067 00908 pe 00 te E FF AUTO RANGE LO Hi RELATIVE MNEIMXGIPK SNI ZERO PROBE ANALOG ONOFF PROBE STN pi Figure 3 6 Figure 3 7 Missing Probe Indication PowerUp Display 3 4 POWER UP SETTINGS The meter permanently saves certain aspects of the instrument s setup and restores them the next time the meter is turned on The conditions that are saved are RANGE setting including AUTO range MODE AC or DC UNITS of measure gauss tesla or amperemeter OUTPUT function Other aspects are not saved and default to these conditions RELATIVE mode turned OFF RELATIVE value set to 0 ZERO mode inactive HOLD mode turned OFF 3 5 LOW BATTERY CONDITION The meter is designed to use four standard AA 1 5V
47. nt is binary 1100 the actual parameter sent would be the two ASCII characters 12 since binary 1100 decimal 12 If you were to send the four ASCII characters 1100 it would be interpreted as decimal 1100 eleven hundred 5 A number returned from the instrument is an ASCII representation of a number For instance if the instrument returns the ASCII string 345 the number is decimal 345 three hundred forty five which translates to 159 hex 6 Multiple commands can be sent in one string The commands must be separated by semicolons For instance CLS IDN first clears the event registers and then requests model and manufacturer information If more than one of the commands in the string requests information from the instrument the instrument s response will also have semicolons separating the responses such as 345 0 10 4 9 COMMON COMMANDS and error buffer ESE lt NRf gt Program event Program standard event ESE Event enable query Read standard event ee register and clear it Identification query Return manufacturer model number software version number Set operation Set the Operation complete Complete bit in the standard event register after all commands have been executed Operation complete Returns an ASCII 1 after query all commands have been executed Option identification Returns information about query the attached Hall probe SRE lt NRf gt Program Status enable register regi
48. or instance a value of 45 decimal is the same as binary 101101 thus setting bits 5 3 2 and 0 in the register and resetting all others Sending the value 00101101 would be interpreted as the number 101 101 NOTE No more than 500 characters can be sent in one command string 4 1 ERROR BUFFER Errors are generated by a variety of sources such as hardware errors or errors in the command syntax If an error occurs a message is stored in an ERROR BUFFER The message can be retrieved by a specific command discussed later in this section STATUS REGISTERS There are four register sets that indicate the status of the instrument such as errors or the present state of the meter These are 8bit registers but in many cases not all of the bits are used The four register sets are called MEASUREMENT EVENT OPERATION EVENT STANDARD EVENT QUESTIONABLE EVENT There is also an 8 bit register that provides a 1 bit summary for each of the four register sets This is called the STATUS BYTE Each register set consists of three individual registers as depicted in Figure 4 3 next page 1 The CONDITION register is a real time read only register that is constantly updated to reflect current operating conditions 2 The EVENT register is fed by the CONDITION register but operates as a latch Whenever any bit in the CONDITION register goes to 1 a corresponding 1 is latched into the EVENT register and remains that way until cleared by a spe
49. oratory use EMC requirements O D connector Center post is polarity A Immunity Analog utpur connecter ENG IEC 61000 4 2 Electrostatic Discharge ESD Operating Temperature 0 to 50 C 32 to 122 F IEC 61000 4 3 Electromagnetic Field RF Storage Temperature 25 to 70 C 13 to 158 F Emissions EN 55022 Class B Radiated and conducted emissions Meter Dimensions Length 17 5 cm 6 9 in Width 9 9 cm 3 9 in Communications Port Height 3 6 cm 1 4 in Format Universal Serial Bus USB Lines supported Transmit receive common Weight Meter w batteries 400 g 14 oz Connector type Mini USB Type B 2 2 Shipping 1 59 kg 3 Ib 8 oz Cable length 3 m 9 8 ft maximum Standards supported IEEE 1987 2 SCPI 1991 STANDARD TRANSVERSE PROBE 1 Model Number 5180 STD18 0404 n i 5170 STH17 0404 SIDE VIEW JE r lt lt lt 42 Frequency Bandwidth 5180 0 to 20 kHz t cy SENSOR LOCATION 5170 0 to 10 kHz t D e a Offset change with Temperature 300 mG C typical 350 010 Accuracy change with Temperature 0 05 C typical Operating Temperature Range 0 to 75 C 32 to 167F Ultra Thin Transverse Probe Storage Temperature Range 25 to 75 C 13 to 167F STB1X 0201 eS ate A Corrected NE Operating Temp stability typ Frequency a B Material STD18 0402 2 0 5 30kG DC to 20kHz STD18 0404 4 0 158 0 045 ie a 004
50. ors and increase susceptibility to radio frequency interference RFI The use of some lower quality or unshielded MAGNET A Figure 3 24 Flux Density Variations in a Magnet 3 20 An AC reading being a true RMS value has no polarity However when using the RELATIVE function in AC mode a negative value may be displayed A negative AC reading means that the present reading is less than the RELATIVE value An unsigned value means the present reading is greater than or equal to the RELATIVE value For example if the original RELATIVE value was 100mT and the present field is 80mT the result will be 20mT MORE DETAILS ON DC MODE OPERATION It is possible for the flux density signal to contain both a DC component and an AC component In the DC mode this can lead to unstable readings If the peak value of the AC component reaches the electrical limits of the meter even though the average DC level is within the limits an overrange condition may appear on the display This situation can also lead to erratic behavior if the AUTO RANGE feature is active The presence of an AC signal can be verified by observing the analog output signal or by using the AC mode to determine the magnitude of the AC component 3 21 Section 4 Remote Operation USB INTERFACE CONNECTION NOTE Ensure that sleep mode is disabled prior to remote operation Prior to using the remote operation capability of the meter the USB driver software must be installed o
51. perature Range 25 to 75 C 13 to 167F 53 3 m 6 3 mm eee ee 2 10 0 25 lt A 1 Pe oo JE 4 000 0 063 SENSOR LOCATION j 0 25 mm 0 010 1 NOMINAL pe lt q EWE 5 B ACTIVE AREA CABLE 180 B DIAMETER 0 4 mm 0 015 1 524 m 5 A NOMINAL 350 010 STEM MATERIAL RIGID PHENOLIC DIAMETER 0 187 0 006 4 3 mm 0 3 mm 1 831 NOMINAL 0 170 0 010 Oe En 492 NOMINAL Standard Axial Probe DIAMETER dt Di gt p LOW FIELD AXIAL PROBE Model Number MOS51 3204 Flux Density Range 1G 100uT DC or peak AC Corrected Linearity 0 75 of Reading Frequency Bandwidth 0 to 700 Hz 3dB Offset change with Temperature 0 02mG C typical Accuracy change with Temperature 0 001 C typical Operating Temperature Range 0 to 75 C 32 to 167F Storage Temperature Range 25 to 75 C 13 to 167F 38 87m 6 4mm 1 53 0 25 CABLE LENGTH 1 524 m 5 18 11mm 0 3mm 0 713 0 010 DIAMETER DIAMETER 4 3 mm 0 3 mm f 1 831 gt See 492 NOMINAL Figure 2 3 Low Field Axial Probe B E RIGID CARBON FIBER STEM t AA LLD 6 FELD DIRECTION 4 1 nav t 22mm SENSOR 0 866 LOCATION 2 5 ZERO FLUX CHAMBER MODEL NUMBER YA111 CAVITY DIMENSIONS Length 50 8 mm 2 Diameter 8 7 mm 0 343 ATTENUATION 80 dB to 30 mT 300 G PURPOSE To shield the probe from external magnetic
52. red from a remote computer or PLC using the USB communications port 5180 The meter probes and accessories are protected when not in use by a sturdy carrying case APPLICATIONS e Sorting or performing incoming inspection on permanent magnets particularly multipole magnets Testing audio speaker magnet assemblies electric motor armatures and stators transformer lamination stacks cut toroidal cores coils and solenoids e Determining the location of stray fields around medical diagnostic equipment e Determining sources of electromagnetic interference Locating flaws in welded joints Inspection of ferrous materials e Field mapping Inspection of magnetic recording heads 1 4 Section 2 Specifications Ranges Resolution Ultra Low Probe Low Mid High Ultra Low Probe Low Mid 5170 300 G 30 kG High Specifications continued on next page 2 1 SPECIFICATIONS MODEL 5170 amp 5180 GAUSS TESLAMETER without probe 23 3 C RH lt 85 Probe accuracy must be added to meter accuracy to determine overall accuracy DC MODE Low Range Mid amp High Ranges Warmup Time To Rated Accuracy 5 minutes Min Max Hold Acquisition Time DC mode 100 ms typical AC mode 700 ms at 10 Hz to 500 ms at 300 Hz 250 ms at 300 4000 Hz 100 ms gt 4kHz AC MODE for sinewave gt 6G or 0 6mT 1 10 20 Hz 3 50 8 20 20 000 Hz 2 50 5 20kHz to 25kHz 1x axial probe only
53. requests information from the instrument the instrument s response will also have semicolons separating the responses such as 345 0 10 SCPI COMMANDS In the following discussion the commands are written such that the short form of the command is written in UPPER CASE letters and the remainder of the command is written in lower case letters Either form can be used If parameters are required they will appear within lt gt brackets in this document Brackets are not part of the actual command string An lt n gt parameter is a single ASCII digit lt NRf gt is usually a multiple digit number The meter supports a subset of the available SCPI commands However there are some functions that are not supported with standard SCPI commands In these cases these special commands are patterned after other SCPI commands that are similar in function SPCI Commands continued on next page ERROR MESSAGE COMMANDS DESCRIPTION SYSTem ERRor Retrieve next error message messages Event reg reg STATus QUEStionable EVENt Query Questionable Event reg STATus MEASurement ENABle lt NRf gt Program Measurement Event Enable reg Event Enable reg Event Enable reg Event Enable reg Enable reg Event Enable reg Condition reg Condition reg Condition reg registers Table 4 2 SCPI Commands 4 13 MODE COMMANDS DESCRIPTION ZERO RELATIVE COMMANDS DESCRIPTION UNIT FLUX AC GAUSs SYSTem AZERo Initiates an
54. ro The reading on the other ranges may also be nonzero depending upon the magnitude of the change The adjustment has 10 times less effect on the middle range and 100 times less effect on the highest range NOTE Zeroing the probe cancels the RELATIVE mode if it was turned on 3 12 RELATIVE MODE The RELATIVE mode allows a specific flux density value to be subtracted from all incoming readings When the RELATIVE mode is active all incoming readings are relative to an offset selected by the user For example if the displayed value is 100 gauss when RELATIVE mode is activated and the flux density at the probe changes to 150 gauss the displayed value will be 50 0 gauss If the flux density then drops to 50 gauss the value displayed by the meter will be 50 gauss The RELATIVE mode allows for the direct readout of variations around a given field level whether static DC or alternating AC There are two ways to generate a relative value When AUTO RELATIVE is selected the meter uses the present flux density reading as the relative value When MANUAL RELATIVE is selected the user can specify a desired relative value using the up down left and right keypad arrows Each mode will be discussed in more detail There are two restrictions when using the RELATIVE mode 1 The RELATIVE mode can only be used in a fixed range If the AUTO RANGE feature is in use and the RELATIVE mode is turned on the AUTO RANGE feature is disabled Conversely
55. rror is the angular position of the probe with respect to the field being measured As mentioned in Section1 a Hall generator is not only sensitive to the number of flux lines passing through it but also to the angle which the pass through it The Hall generator produces the greatest signal when the flux lines are perpendicular to the sensor as shown in Figure 3 22 The probe is calibrated and specified with flux lines passing perpendicularly through the Hall generator 5 As shown in Figure 3 23 the greater the distance between the magnetic source and the Hall probe the fewer flux lines will pass through the probe This would cause the probe s output to decrease Handle the Hall probe with care Do not bend the stem or apply pressure to the probe tip as damage may result Use the protective cover when the probe is not in use A re HIGHER LOWER n DENSITY DENSITY 7 MAGNET N MAXIMUM LESS ZERO OUTPUT OUTPUT OUTPUT Figure 3 22 Figure 3 23 Probe Output versus Flux Angle Probe Output versus Distance 3 19 6 Flux density can vary considerably across the pole face of a permanent magnet This can be caused by internal physical flaws such as hairline cracks or bubbles or an inconsistent mix of materials Generally the sensitive area of a Hall generator is much smaller than the surface area of the magnet so the flux density variations are very apparent Figure 3 24 illustrates this situation 7 The accuracies o
56. ster STB Status byte query Read status byte register Table 4 1 Common command summary 4 10 CLS CLEAR STATUS Clears the MEASUREMENT EVENT OPERATION EVENT STANDARD EVENT and QUESTIONABLE EVENT registers but not their enable registers It also clears the error buffer ESE lt NRf gt PROGRAM STANDARD EVENT ENABLE REGISTER A set bit in the STANDARD EVENT ENABLE register allows its corresponding event to set the ESB event summary bit in the STATUS BYTE register lt NRf gt is an ASCII string representing an integer mask For instance a value of 45 decimal is the same as binary 00101101 thus setting bits 5 3 2 and 0 in the enable register ESE STANDARD EVENT ENABLE REGISTER QUERY Returns the contents of the STANDARD EVENT ENABLE register ESR STANDARD EVENT REGISTER QUERY Returns the contents of the STANDARD EVENT register NOTE The STANDARD EVENT register is cleared after an ESR command IDN IDENTIFICATION QUERY Returns the following string F W BELL MODEL 5180 Rx x The Rx x string is the firmware revision level where x x is a decimal number such as 1 1 OPC SET OPERATION COMPLETE Causes the OPC operation complete bit to set in the STANDARD EVENT register when all commands have been executed OPC OPERATION COMPLETE QUERY Causes the OPC operation complete bit to set in the STANDARD EVENT register and returns an ASCII 1 when all commands have been executed
57. stionable Summary Bit QSB will set in the STATUS BYTE 7 6 5 4 3 2 1 O CAL Figure 4 8 Questionable Event register CAL Calibration summary Indicates that an invalid calibration constant was detected during power up or when the probe was installed The instrument will instead use a default parameter This bit will clear once the meter and probe have been successfully calibrated NOTE Meter specifications are not guaranteed when the CAL bit is set 4 8 COMMON COMMAND SYNTAX The common commands are recognized and acted upon in a similar manner by all instruments that follow the IEEE488 2 standard whether a DVM scope frequency meter gaussmeter etc These are the syntax rules 1 A common command always begins with an asterisk character followed by a three or four character acronym and possibly one other parameter For instance the command to clear the event registers is CLS 2 The commands are not case sensitive For instance the CLS cls and cLS commands are identical 3 If there is a fourth character in the acronym it will always be a question mark and indicates that information is being requested from the instrument For instance a command to read the model number and manufacturer of the instrument is IDN 4 If a parameter follows a command it must be separated from the acronym by one space The parameter is the ASCII representation of an integer For instance if the parameter to be se
58. t STATus QUEStionable EVENt Returns the contents of the specified EVENT register then clears the register contents STATus MEASurement ENABle lt NRf gt STATus OPERation ENABle lt NRf gt STATus QUEStionable ENABle lt NRf gt Programs the specified EVENT ENABLE register with the value lt NRf gt lt NRf gt is an ASCII string representing an integer mask For instance a value of 45 decimal is the same as binary 00101101 thus setting bits 5 3 2 and 0 in the enable register STATus MEASurement ENABle STATus OPERation ENABle STATus QUEStionable ENABle Returns the contents of the specified EVENT ENABLE register STATus MEASurement CONDition STATus OPERation CONDition STATus QUEStionable CONDition Returns the contents of the specified EVENT CONDITION register The EVENT CONDITION register is a realtime register reflecting the state of the meter at the time of the read Some conditions could happen very quickly and could be missed by this query It is often better to rely on the contents of the EVENT register since it latches the event until cleared by a specific command STATus PRESet Clears all EVENT ENABLE registers 4 16 MODE COMMANDS These commands select readings in either GAUSS TESLA or AMPMETERS and flux density readings for either static fields dc or alternating fields ac See Section3 for more information UNIT FLUX AC GAUSs Specifies ac flux density readings in gauss UNIT FLUX
59. umber 2 The second function is the one you will use to do all other communication except for closing the session with the 5180 It is scpiCommand and requires 4 arguments to be passed when calling a The USB ID number assigned when the device was opened initially the handle returned by openUSB5100 b The SCPI command string the text string for the desired command as given in the user manual Remote Operation and SCPI command sections c Pointer to the object where you want the response returned to this should be a pointer to a string variable d Maximum response string length Default is 80 and this should be good for most applications Example scpiCommand 102030405 IDN pointer to ResponseString variable 80 3 The third function will close the USB session with the 5180 It is close USB5100 and does not return anything Example closeUSB5100 102030405 Below are the function definitions for these FWB5180 h II The following ifdef block is the standard way of creating macros which make exporting Il from a DLL simpler All files within this DLL are compiled with the USB5100_EXPORTS I symbol defined on the command line this symbol should not be defined on any project that uses this DLL This way any other project whose source files include this file see 1UUSB5100_API functions as being imported from a DLL whereas this DLL sees symbols II defined with this macro as being exported ifdef USB5100 EXPORTS defin
60. wed by the LEFT 3 pushbutton to return to normal operation Hold To select the HOLD operation press the SHIFT pushbutton followed by the RESET pushbutton Press the LEFT 3 and RIGHT 4 arrow pushbuttons to select between MIN HOLD MAX HOLD PEAK HOLD and HOLD OFF In any mode press the RESET pushbutton to clear the held reading Press the SHIFT pushbutton followed by the RESET pushbutton to return to normal operation AC DC To select either AC or DC mode press the SHIFT pushbutton followed RIGHT 4 arrow pushbutton Analog Output To enable and disable ANALOG OUTPUT operation press the SHIFT pushbutton followed by the UP 5 arrow pushbutton ON OFF Press the ON OFF pushbutton to power the unit ON To turn the unit OFF press the ON OFF pushbutton for 3 seconds SLEEP MODE This feature turns unit the OFF after one hour of inactivity i e user input remote commands etc Press the SHIFT pushbutton followed by the ON OFF pushbutton to enable and disable this feature The battery symbol and either ON or OFF will flash to indicate the state that has been selected FIRMWARE VERSION The firmware versions for the microcontroller and DSP may be displayed by pressing RESET for more than 1 second while in any normal operating mode For example r2 00 d2 00 5180 Model only AUTO RANGE LO HI RELATIVE ZERO PROBE ANALOG ONOFF 88887 mA MN MXD PK 5180 Gauss Tesla Meter Pre Retr Aty

Model 5170/5180 Gauss/Tesla Meter

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