F.W. Bell 8000 series Instruction Manual
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F.W. Bell 8000 series Instruction Manual

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8000 SERIES GAUSS / TESLA METER
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  • Page 1 8000 SERIES GAUSS / TESLA METER Instruction Manual...
  • Page 2 THIS SIDE BLANK ! (Inside of Front Cover)
  • Page 3 8000 Series GAUSS / TESLA METER Instruction Manual Manual UN-01-270 Rev. B February, 2017 Applicable System Firmware Release 1.6.2 All Rights Reserved.

  • Page 4: Environmental Considerations

    European Union Directives 2012/19/EU and 2006/66/EC on Waste Electrical and Electronic Equipment (WEEE) and batteries. For information on recycling options please check the Meggitt Sensing Systems Recycling website: http://www.meggittsensingsystems.com/WEEE/recycling/index.html RoHS Compliance The 8000 Series Gaussmeters and probes meet the RoHS 2011/65/EU Directive on the Reduction of Hazardous Substances.
  • Page 5 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. NOTICE: See Pages 4-1, 4-2, and 4-3 for SAFETY instructions prior to first use! See Page 2-4 for EMC Notes concerning I/O Cables and I/O Filter Adapters...

  • Page 6: Table Of Contents

      Probe Stem ....................... 3-3   Temperature Effects ....................3-3   Fixturing ........................3-3   8000 Series Probes ....................3-4   SECTION 4 Setup ....................... 4-1   Safety Instructions ....................4-1   Line Voltage Settings / Fuse Panel ................4-3  ...
  • Page 7 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual SECTION 6 Flux Density Measurement ..............6-1   Overview ........................6-1   Measurement Units ....................6-2   Flux Density Reading ....................6-3   Measurement Range Selection ................6-3   Measurement Mode Selections ................6-4  ...
  • Page 8 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Functional Description ..................8-10   Implementation ....................8-11   Configuration ....................8-12   Status Registers and Error Queue ................8-13   Status Registers ....................8-13   Status Byte and Service Request (SRQ) ............8-14  ...

  • Page 9: List Of Tables

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual LIST OF TABLES Table 1-1 8000 Series Gauss/Tesla Meter List of Features ........1-2 Table 1-2 Front Panel Description ................1-6 Table 1-3 Rear Panel Description ................1-7 Table 2-1 Ranges for Low Field Probes ..............2-1 Table 2-2 Ranges for Mid Field Probes ..............
  • Page 10 YA-111 Zero Flux Chamber ..............2-6   Figure 2-4 YA-112 Zero Flux Chamber ..............2-6   Figure 3-1 8000 Series Probe Model Chart ............... 3-2   Figure 3-2 Hall Probe Configurations ................ 3-4   Figure 4-1 Probe Electrical Warning ................4-2  ...
  • Page 11 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Figure 8-1 RS-232 Connector ................... 8-3   Figure 8-2 RS-232 Setup Screen ................8-3   Figure 8-3 Ethernet Connector Pin Out ..............8-4   Figure 8-4 Network Configuration Screen ..............8-5  ...

  • Page 12: Section 1 Introduction

    8000 Series Gauss/Tesla Meter Instruction Manual SECTION 1 Introduction The F.W. BELL 8000 Series Gauss/Tesla meters incorporate the latest Overview developments in magnetic flux density measurement technology with a modern user interface. It features a large display for easy viewing, a comprehensive keypad for control of common functions, and an easy-to- use menu system.

  • Page 13: Table 1-1 8000 Series Gauss/Tesla Meter List Of Features

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Table 1-1 8000 Series Gauss/Tesla Meter List of Features Flux Density Auto Range and Zeroing Capability Measurement DC and AC Field Measurement up to 50 kHz Automatic Calibration Units in gauss (G), tesla (T), amp/meter (A/m), or Oersted (Oe)

  • Page 14: General Description

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The Model 8000 Series Gauss/Tesla meters utilize Hall effect probes to General measure magnetic flux density in units of Gauss (G), Tesla (T), Amp/meter Description (A/m), or Oersted (Oe). Either steady-state (DC) or alternating (AC) fields may be measured.
  • Page 15 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Relative General Description Another feature, called “relative mode”, allows large flux readings to be (Continued) suppressed so that small variations within the larger field can be observed directly. Update Interval The update interval of the reading may be adjusted. Shorter update intervals allow rapid fluctuations in flux density levels to be observed.
  • Page 16 SCPI-1999 standards. In addition the 8000 Series Gaussmeters are supplied with an internal HTML based remote monitoring and data logging application, that when connected to a computer network can be accessed with standard web browser applications.

  • Page 17: Table 1-2 Front Panel Description

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual General Front Panel The front panel consists of the TFT Color LCD display, Keypad, USB Ports, Description and Probe Connector(s). (Continued) Table 1-2 Front Panel Description WVGA, 600 x 480 pixels, TFT Color LCD Display with Backlighting...

  • Page 18: Table 1-3 Rear Panel Description

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Rear Panel General The rear panel consists of the Power Inlet / Fuse Holder, Analog Signal Description Outputs, Communication Ports, and the Cooling Fan Vent. (Continued) Table 1-3 Rear Panel Description (1) Corrected Analog Compensated Analog Output Voltage Signal, Standard BNC Connector.

  • Page 19: Applications

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual General Cabinet Description The cabinet is equipped with a side handle and two feet underneath the (Continued) unit which serve to adjust the tilt angle of the instrument. Figure 1-3 shows the instrument in various positions.

  • Page 20: Section 2 Specifications

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual SECTION 2 Specifications Meter Specifications Full-scale ranges are shown in the Tables 2-1 through 2-3 below, listed by probe type. In all cases, the display resolution is 1 part in 300,000. Table 2-1...
  • Page 21 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Analog Output Impedance: Min / Max Hold Acquisition Time: <100 Ohms dc Mode: 200mS ac Mode: 200mS Analog Output Connector: Standard female BNC Peak / Valley Hold Acquisition Time: dc Mode: 6µs...

  • Page 22: Table 2-4 Accuracies At 23˚C ± 2C˚ (Meter Only)

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Accuracies at 23˚C ±2C˚ (Meter Only*) Table 2-4 Uncorrected Analog Output Display and Digital Corrected Analog Output and (polarity is inverted in AC and Outputs (min speed) Digital Outputs (max speed) Wave Form mode) 3V range: 0.25% of...

  • Page 23: Communications

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Communications EMC Application Note Use only high quality, double shielded cables for the RS-232 and Digital I/O connections. Keep the length of the cables less than 3 meters. Cables greater than 3 meters with insufficient EMI shielding can cause excessive emissions or may be susceptible to external interference.

  • Page 24: Regulatory Information

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Regulatory Information Compliance was demonstrated to the following specifications as listed in the official Journal of the European Communities: EN 61326-1:2006 Immunity IEC 61000-4-2:2008 Electrostatic Discharge (ESD) Immunity IEC 61000-4-3:2010 Radiated Electromagnetic Field (RF) Immunity...

  • Page 25: Zero Flux Chambers

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Zero Flux Chambers Purpose: To shield the probe from external magnetic fields during the ZERO or RELATIVE operations. Model Number: YA-111 Cavity Dimensions: Length: 50.8 mm (2”) Diameter: 8.7 mm (0.343”) Attenuation:...

  • Page 26: Section 3 Probes

    8000 Series Gauss/Tesla Meter Instruction Manual SECTION 3 Probes F.W. Bell’s 8000 series gauss/tesla meter probes are designed to meet Overview the electrical and mechanical requirements of virtually any application. Models are available for transverse, axial, and very low field measurements.

  • Page 27: Probe Variations

    10µG (1nT), but the least significant digit for the MOX type is not very stable. Figure 3-1 serves as model number guide for F.W. BELL 8000 series probes. Full electrical and mechanical specifications of probes are available on request.

  • Page 28: Probe

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The connector of each probe contains a memory device which stores Probe registration information (model number, serial number, date calibrated, etc.) Memory as well as performance information for Hall generator sensitivity, linearity, frequency response and temperature response.

  • Page 29: 8000 Series Probes

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual 8000 Series Probes Figure 3-2 Hall Probe Configurations Section 3 - Probes...

  • Page 30: Section 4 Setup

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual SECTION 4 Setup Safety Instructions GENERAL: For safe and correct use of this instrument it is necessary that both operating and servicing personnel follow generally accepted safety procedures plus the safety cautions and warnings specified.

  • Page 31: Figure 4-1 Probe Electrical Warning

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Safety Instructions (Continued) WARNING: The Hall probe is a non-contact measuring device. The probe is not to contact a surface which exceeds a voltage of 30Vrms (42.4V peak) or 60V dc. Figure 4-1...

  • Page 32: Line Voltage Settings / Fuse Panel

    Gauss/Tesla Meter Instruction Manual WARNING! READ THIS CAREFULLY The 8000 Series gauss/tesla meters incorporate a universal power supply which operates from 90 to 260Vac. There are no switches or jumpers to select line voltage, but proper fuse selection is required.

  • Page 33: Adjusting The Handle & Feet

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The handle on the side of the meter can easily be grasped whenever the Adjusting the meter needs to be carried. The meter has two feet on the bottom as shown Handle & Feet below which can easily be extended or collapsed to adjust the viewing angle of the front panel as preferred.

  • Page 34: Probe Installation / Removal

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual See Figure 4-4 Probe Installation / Install the probe connector so that the molded key in the connector body Removal lines up with a similar key-way at the lower edge of the receptacle on the front panel.

  • Page 35: Power-Up

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Locate the [Standby] button on the front panel, see below. After application of Power-Up power to the input line cord, the standby button back light LED will slowly strobe red to indicate that the meter is in standby mode and power is applied.

  • Page 36: Figure 4-6 Boot Up Screen

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual POWER – UP Firmware Initialization (Continued) During boot up, the OE logo will appear and a status bar indicates boot up progress. See Figure 4-6. Internal diagnostics are performed first, followed by the initial formatting of the display.
  • Page 37 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual This Page Intentionally Blank Section 4 - Setup...

  • Page 38: Section 5 User Interface

    Gauss/Tesla Meter Instruction Manual SECTION 5 User Interface Most of the features and functions of the 8000 Series Gaussmeters are Overview activated directly from the front panel keypad. Each probe input channel has its own dedicated set of keys that control commonly used functions and the remaining functions are accessed through the menu system.

  • Page 39: Front Panel Keypad

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual There are several sets of keys on the 8000 Series Gaussmeter. Front Panel Keypad One set is associated with the menu system and these keys include; ‘Menu’, ‘Enter’ and the row of Menu Hot Keys that are aligned beside the display...

  • Page 40: Menu System

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The menu system for the 8000 Series Gaussmeter is very intuitive to use. It Menu System features the use of “Hot Keys” which are linked to menu selections or functions on the display. Note the corresponding red lines that link the six Menu Hot Keys to menu selections on the right-hand side of the display as shown in Figure 5-2.

  • Page 41: Figure 5-3 Menu Selections Example

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual As the menu system is accessed each selection opens the selected menu MENU SYSTEM or provides access to a list of settings for the desired function. At the (Continued) point where function options are selected, the option selected will be highlighted in yellow as shown with the 30G range in the following example depicted in Figure 5-3.

  • Page 42: Figure 5-5 8000 Gaussmeter Menu Map

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The complete 8000 Series Gaussmeter menu system map is shown in MENU SYSTEM Figure 5-5. (Continued) Figure 5-5 8000 Gaussmeter Menu Map Section 5 – User Interface...

  • Page 43: Display System Information

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Information about the meter and probes connected to the meter including the Display System firmware revisions, model numbers, serial numbers, calibration dates and Information other miscellaneous data can be viewed using this menu selection.
  • Page 44 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Table 5-2 Default Configuration Settings Function Item Setting Scope Flux Density tesla (T) All Channels and Vector Summation UNITS Temperature Celsius (°C) All Channels Angle Radians (rad) Vector Summation Time Frequency (Hz)

  • Page 45: Setting The Date And Time

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The meter’s internal clock is used to generate time stamps for data logging of Setting the measurements. Date and Time The time is set and stored in 24-hour format; refer to Table 5-3 for conversions between 12-hour and 24-hour formats.

  • Page 46: Display Errors

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The meter has an internal error log that will store up to 25 error messages Display Errors generated during operation. Refer to the sections of this manual covering status and error queue for more information regarding the error log, and Appendix C for a list of error messages.
  • Page 47 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual This Page Intentionally Blank Section 5 – User Interface 5-10...

  • Page 48: Section 6 Flux Density Measurement

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual SECTION 6 Flux Density Measurement This section describes magnetic field measurement operations for the 8000 Overview Series gauss/tesla meters. Each of the meter’s functions and features relating to field measurement is described in detail. This includes general considerations, technical information, and instructions on how to use each feature or function.

  • Page 49: Measurement Units

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Units of measurement are set for the entire meter, i.e. it is not possible for Measurement one channel to have different units than another. The measurement units Units selected are displayed as part of the measurement when selected. Table 6- 1 lists the available units for each parameter.

  • Page 50: Flux Density Reading

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The flux density reading contains five or six digits of information, a decimal Flux Density point, polarity identifier, and the units of measurement; see Figure 6-2. Reading the dc mode of operation, the polarity is indicated with a “+” or a “-“. The polarity information is absent when in ac mode, unless relative mode is enabled.

  • Page 51: Measurement Mode Selections

    If this indicator appears, you should probably use the next higher range. The 8000 Series Gaussmeter is capable of measuring either static (DC) or Measurement alternating (AC) magnetic fields. To measure DC fields the meter must be...

  • Page 52: Dc Mode Operation

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Figure 6-4 Measurement Mode Selection In the DC mode, the presence of an AC component can lead to unstable DC Mode readings. If the peak value of the combined AC and DC component reaches...

  • Page 53: Ac Mode Operation

    As shown in Table 6-3 the Full Bandwidth frequency filter selection utilizes the full bandwidth of the 8000 Series Gaussmeter. The other filter selections can be used to narrow or focus the bandwidth of the meter’s analog amplifiers to minimize influence from noise or other unintentional signals.

  • Page 54: Table 6-3 Ac Mode Analog Filter Selections

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Table 6-3 AC Mode Analog Filter Selections Filter Selection Bandwidth Full Bandwidth 1 Hz to 50 kHz High Frequency 20 Hz to 50 kHz Medium Frequency 20 Hz to 10 kHz Low Frequency...

  • Page 55: Zeroing

    (roughly 0.5 gauss or 50 µ T), can introduce errors in the final reading. For most situations it is preferable to shield the probe from all external magnetic fields prior to zeroing. For this reason the 8000 Series Meters are provided with a “zero flux chamber” which is capable of shielding against fields as high as 30mT (300G).

  • Page 56: Table 6-4 Estimated Zeroing Times

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Automatic Zeroing Zeroing The meter’s automatic zero can be configured to zero in one of the three modes listed below. DC Only zeroing provides the shortest zeroing process delay and as the name suggests, only measures and applies zeroing factors for DC Mode measurements.

  • Page 57: Figure 6-7 Auto Zero Menu Path

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Each channel will display a message that indicates the selected zeroing mode and a progress status bar that approximates the duration of the zeroing process. Once zeroing begins it must be allowed to complete.

  • Page 58: Figure 6-8 Manual Zero Menu Path

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual 1) Position the probe for zeroing. 2) Navigate the system menu for the desired channel and select Manual Zero. Zeroing Manual Zero (continued) The display will change to show the manual zero input value (MZERO) and using the menu buttons the user can enter a value by selecting the appropriate digit and either incrementing of decrementing the digit.

  • Page 59: Display Update Interval

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The update interval of the displayed readings and the data log rate may be Display adjusted using the Update Rate menu. Shorter update intervals allow rapid Update fluctuations in flux density levels to be observed. Longer update intervals...
  • Page 60 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual In some applications it may be desirable to “hold” a reading that is either Hold Function greater than (MAX hold) or less than (MIN hold) all previous readings. Also, it may be necessary to capture the high (, Hold) and low (VALLEY Hold) extremes of rapidly changing pulses.

  • Page 61: Hold Function

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual HOLD Hold Mode Configuration FUNCTION The hold functions are setup for use from each channel’s hold menu, but can also be activated and reset from the front panel using the channel keys.

  • Page 62: Relative Mode

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The relative mode allows a specific flux density value to be subtracted Relative Mode from all future readings. Thus all future readings will be “relative” to that value. For instance if the relative value is +100.0 gauss, and the present flux density is +112.0 gauss, the actual displayed value will be...

  • Page 63: Figure 6-11 Relative Value Indicator

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Auto Relative Mode – Front Panel Relative Mode In the automatic mode, the present flux density as seen by the probe is used as the relative value. To use the present flux density as the relative value: 1) Select AC or DC mode.

  • Page 64: Figure 6-12 Relative Settings Menu Path

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Relative Mode Auto / Manual Relative Mode – Menu System In some cases you may wish to set a relative value. The relative value can be set precisely from the menu system.

  • Page 65: Vector Summation

    X, Y, and Z axes as shown in Figures 6-11a and 6-11b will produce positive readings. The meter will detect the presence of an 8000 series 3-axis probe and will automatically recognize X, Y, and Z regardless of how their cables are connected to channels 1, 2, and 3.
  • Page 66 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Vector Magnitude Vector Summation The vector magnitude is calculated using the Pythagorean Theorem for an (8030 ONLY) Orthogonal Cartesian co-ordinate system, mathematically: Figure 6-14 Vector Sum Equation Where X, Y, and Z, are the axis readings from channels 1, 2, or 3 and R is the resultant vector magnitude.

  • Page 67: Figure 6-16 Vector Sum Settings

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Activating and Configuring the Vector Summation Vector Summation The Vector Summation functions are configured and activated / de-activated (8030 ONLY) through the menu system. To configure or activate vector summation functions: 1) From the main menu, choose ‘Channels’.

  • Page 68: Analog Outputs

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Each channel provides corrected and uncorrected analog output voltage Analog signals that are available from standard BNC connectors located on the back Outputs panel. The uncorrected output signal is representative of the magnetic flux density as measured by the Hall probe and is simply the amplified, scaled analog probe signal.
  • Page 69 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Flux Density Range and Output Voltage Range Analog Outputs Full scale of the present flux density range always corresponds to the full (Continued) scale setting for the analog output voltage range. For example, if the full scale flux density range is 30 gauss and the full scale analog output voltage range is 3 volts;...

  • Page 70: Figure 6-17 Analog Output Settings

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Analog Outputs Configuring the Analog Outputs (Continued) 1) From the main menu choose, ‘ANALOG OUTPUT’. 2) Select the channel or vector sum (8030 only). 3) Select corrected or uncorrected. 4) Set the analog output mode and scaling.

  • Page 71: Classifier Outputs

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The classifier function allows a lower and upper limit of flux density to be Classifier defined that can be quickly used to determine the status of a magnetic field. Outputs The meter will indicate visually whether the field is above, within, or below these limits.

  • Page 72: Sources Of Measurement Error

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual When making flux density measurements there are several conditions that Sources of can introduce errors: Measurement Error 1) Failure to zero the error signals from the meter, probe, and nearby sources of magnetic interference.

  • Page 73: Figure 6-21 Flux Density Variations In A Magnet

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Sources of 5) Flux density can vary considerably across the pole face of a permanent Measurement magnet. This can be caused by internal physical flaws such as hairline Error cracks or bubbles, or an inconsistent mix of materials. Generally the...

  • Page 74: Section 7 Ac Waveform Display

    Gauss/Tesla Meter Instruction Manual SECTION 7 AC Waveform Display The 8000 Series Gauss / Tesla meter is the first meter in its class to offer Introduction a graphical, color, waveform display for AC mode measurements without the use of an external oscilloscope or other analog graphing device.

  • Page 75: Accessing The Ac Waveform Display

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual To enter the AC Waveform Display, navigate the menu system as shown Accessing the in Figure 7-2. Pressing the Waveform hot key will enable the waveform AC Waveform display with the layout as seen in Figure 7-1.

  • Page 76: Setting The Vertical Scale

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Setting the Time Selecting the appropriate AC bandwidth filter for the signal of interest will Base (cont’d) allow the user to display the desired time resolution for the signal being examined. Table 7-1 shows the time base settings for each of the AC Frequency Filters.

  • Page 77: Trigger Operation

    7-3. Figure 7-3 Trigger Setup Menu Much like an oscilloscope the 8000 Series Waveform Display uses a trigger to synchronize the measurement display data. Several different modes of operation are possible including ones that allow the setting of custom trigger levels and slopes.

  • Page 78: Trigger Channel Selection

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Trigger Operation (Continued) The trigger channel selection is only available on 8030 models and Trigger Channel allows the user to select the trigger channel. Selection The selected trigger channel and trigger settings are displayed on the bottom line of the waveform display as shown in Figure 7-1.

  • Page 79: Trigger Slope

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The trigger slope setting is used in combination with the trigger level Trigger Slope setting to determine the desired trigger point for capturing events in Repeat and Single trigger modes. It can be set to either Positive or Negative slope.

  • Page 80: Section 8 Remote Operation

    Manufacturers can still create new commands unique to their own instruments while conforming to the structure and spirit set forth by SCPI. The 8000 Series Gauss / Tesla Meters utilize many of the IEEE-488- 1987.2 “common” commands in addition to a subset of the SCPI-1999.0 commands.

  • Page 81: Communications Ports

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Communications Ports RS-232 Port The instrument has been designed to interface directly to the 9-pin “D” serial Functional connector on most personal computers using a straight-through cable. This Description means Pin-1 on the meter is connected to Pin-1 on the computer, Pin-2 to Pin-2, etc.

  • Page 82: Configuration

    It must also be enabled or disabled on the computer accordingly. If disabled the instrument will treat the XON and XOFF characters as any other character. Shown below is the pin out for the 8000 Series Meter RS-232 communications port. Figure 8-1...

  • Page 83: Ethernet Port

    None, Even, Odd Handshaking None, Software, Hardware Ethernet Port The 8000 Series Gaussmeters are equipped with a standard 10/100MHz Functional Ethernet port via a RJ-45 connector on the back panel. This port supports Description TCP/IP communications and provides the user access to the system’s internal web based application interface.

  • Page 84: Configuration

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Navigating the system menu from MAIN menu to [SYSTEM ⇒ COMM Configuration SETUP ⇒ NETWORK CONFIGURATION] will bring up the Ethernet port network configuration screen as shown below. The meter offers two network address setup options which the user can select by pressing the [Change Addr Mode] button.

  • Page 85: Accessing The System With Telenet Client

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The meter can also be remotely accessed using a Telnet Client such as Accessing the Windows Telnet Client. System with TELENET Client Note: The following example utilizes the windows system32 telnet.exe client as part of Windows XP.

  • Page 86: Internal Web Application

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The 8000 Series Gaussmeters offer an internal web application that is Internal Web accessible over computer networks using standard web browser Application programs. The application provides remote access to view measurements, change meter settings, log data, and access the meter’s internal data storage for...

  • Page 87: Functional Description

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual This remote display is separated into a series of different windows that Functional display meter information including common controls, the flux density, Description frequency, and temperature measurements, data logging, and file utilities for the internal flash drive.
  • Page 88 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The Previous Data Logs window shows a list of all the log files stored on Previous Data Logs the internal flash drive. Right clicking a particular log file will give the user a choice to Download or Delete the log file.

  • Page 89: Figure 8-7 Ieee-488 (Gpib) Connector

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual IEEE-488 (GPIB) BUS The IEEE-488 (GPIB) instrumentation bus allows up to 15 instruments to be Functional connected together in a "daisy chain" fashion. Description Any device connected to the bus is capable of acting in any of three basic roles: controller, talker and listener.

  • Page 90: Implementation

    Pin-18,19, 20. 21, 22, 23. These are the common return lines for all 24 Ground (GND) other signals except earth ground (Pin-12). The 8000 Series Gaussmeters implement GPIB communications using an Implementation externally connected Prologix GPIB-USB Controller through the meter’s front panel USB port.

  • Page 91: Configuration

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The only gaussmeter setting that may be configured for the GPIB Configuration communications is the instrument address. This may be any value between 0 and 30. Navigating the system menu from [Main] to [System ⇒ Comm Setup ⇒ GPIB Configuration] will bring up the GPIP configuration screen as shown below.

  • Page 92: Status Registers And Error Queue

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Status Registers and Error Queue There are four register sets that indicate the status of the instrument, such as Status errors or the present state of the machine. These are 16-bit registers, but in Registers many cases not all of the bits are used.

  • Page 93: Status Byte And Service Request (Srq)

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The IEEE-488 bus is a common bus linking a master controller (your tatus Byte and computer) to one or more instruments. If an instrument requires action from Service the controller it must somehow get the controller’s attention. A hardware line...

  • Page 94: Error Queue

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual OSB - Operation Summary Bit: Status Byte If any of the bits in the OPERATION EVENT register set, and their respective and Service enable bits are set, the Operation Summary Bit (OSB) will set.

  • Page 95: Standard Event Register

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual If any of these bits set, and their respective enable bits are set, the Event Standard Event Summary Bit (ESB) will set in the STATUS BYTE. Register Figure 8-11 Standard Event Register...

  • Page 96: Operation Event Register

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual ROF1, ROF2, ROF3 - Reading Overflow: Indicates that the present reading exceeds the measurement range for Channel-1, 2, and/or 3. RAV1, RAV2, RAV3 - Reading Available: Indicates a reading is available and processed for Channel-1, 2, and/or 3.

  • Page 97: Remote Scpi Commands

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Remote SCPI Commands The “common” commands are recognized and acted upon in a similar manner IEEE - 488.2 by all IEEE-488.2 instruments, whether a DVM, scope, frequency meter, tesla “Common” meter, etc. These are the syntax rules:...

  • Page 98: Ieee-488.2 "Common" Command Descriptions

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual IEEE-488.2 “Common” Command Descriptions Table 8-2 Common Command Summary ACRONYM NAME BRIEF DESCRIPTION Clear status Clear all event registers and error queue. *CLS Program event enable Program standard event enable register. *ESE <NRf>...
  • Page 99 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual *IDN? - IDENTIFICATION QUERY Returns the following string: F.W.BELL,80m0 GAUSS-TESLAMETER,x.x.x. Where m is the 8000 model (i.e. 8010 or 8030) and x.x.x is the firmware revision level. *OPC - SET OPERATION COMPLETE Causes the OPC (operation complete) bit to set in the STANDARD EVENT register when all commands have been executed.
  • Page 100 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual *SRE? - SRQ ENABLE REGISTER QUERY Read the contents of the SRQ ENABLE register. The results are placed in the output queue of the instrument. *STB? - STATUS BYTE QUERY Read the contents of the STATUS BYTE register. The results are placed in the output queue of the instrument.

  • Page 101: Scpi Command Syntax

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The SCPI commands provide a language protocol and define a standard set of commands to program every aspect of the instrument. These are the syntax SCPI rules: Command Syntax 1) The first character of any command string is a colon (:).

  • Page 102: Scpi Message Terminators

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual When transmitting a string to the instrument the message must be SCPI Message “terminated” properly to notify the instrument that the message is Terminators complete. One way is to append an ASCII line feed (LF) character as the final character in the string, which is a 0A hex or 00001010 binary.

  • Page 103: Table 8-3 Scpi Error Queue Commands

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Table 8-3 SCPI Error Queue Commands COMMAND DESCRIPTION :SYSTem:ERRor? Retrieve the most recent error message in the queue :SYSTem:ERRor:NEXT? Retrieve and remove the oldest message in the queue Table 8-4 SCPI System Information and Configuration Commands...

  • Page 104: Table 8-8 Scpi Display Update Rate Command

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :SENSe#:FLUX:DC:RANGe:AUTo <b> Enable/disable auto range in dc mode :SENSe#:FLUX:AC:RANGe:AUTo <b> Enable/disable auto range in ac mode :SENSe#:FLUX:RANGe:FIXed <n> Define a fixed range in dc mode :SENSe#:FLUX:DC:RANGe:FIXed <n> Define a fixed range in dc mode :SENSe#:FLUX:AC:RANGe:FIXed <n>...

  • Page 105: Table 8-12 Scpi Zeroing Commands

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Table 8-12 SCPI Zeroing Commands COMMAND DESCRIPTION :CALibration#:ZERo:HSENsor:INITiate Zero the Hall probe and instrument for single channel :CALibration#:ZERo:HSENsor:MODe <n> Set the auto zero mode :CALibration#:ZERo:HSENsor:MODe? Query the auto zero mode :CALibration:ALL:ZERo:HSENsor:INITiate Zero the Hall probe and instrument for all channels :CALibration:ALL:ZERo:HSENsor:MODe <n>...

  • Page 106: Scpi Command Descriptions

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :CALCulate#:HOLD:VALLey:STATe <b> Enable/disable the VALLEY HOLD function :CALCulate#:HOLD:VALLey:STATe? Query the state of the VALLEY HOLD function Resets the value being held by the VALLEY HOLD :CALCulate#:HOLD:VALLey:CLEar function Query the value being held by the VALLEY HOLD...
  • Page 107 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual System :SYSTem:VERSion? This command responds with the version number of the SCPI standard Information and that is supported by this instrument. The version number is in the format Configuration of “YYYY.V”, where “YYYY” is the year version of the standard and “V “is Commands the approved revision number, such as “1999.0”.
  • Page 108 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The contents of the instrument’s real time calendar will be returned using the following format: <year>, <month>, <day> where: <year> is in the range of 2000 – 9999 <month> is in the range of 1 – 12 (1 = January, 2 = February, etc) <day>...
  • Page 109 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual cleared by a specific command. :STATus:PRESet This command clears MEASUREMENT EVENT ENABLE, OPERATION EVENT ENABLE and QUESTIONABLE EVENT ENABLE registers. These commands select the measurement units for temperature, vector Unit Commands angle, flux density and time-based measurements.

  • Page 110: Table 8-17 Operating Ranges With Various Probes

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :SENSe#:FLUX:DC Specifies that the measured flux density mode will be static (DC) or alternating (AC). These commands do not alter the present range setting. :SENSe#:FLUX:RANGe:FIXed <n> :SENSe#:FLUX:DC:RANGe:FIXed <n> :SENSe#:FLUX:AC:RANGe:FIXed <n> Specifies that the measured flux density mode will be static (DC) or alternating (AC) while also specifying one of four fixed operating ranges for the instrument, as defined in table shown below.
  • Page 111 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :DISPlay:RATe <n> where <n> 0 = 2 second update rate 1 = 1 second update rate 2 = 0.5 second update rate 3 = 0.2 second update rate :DISPlay:RATe? where <n> 0 = 2 second update rate 1 = 1 second update rate 2 = 0.5 second update rate...
  • Page 112 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :CALCulate#:LIMit:FAIL? Returns the pass/fail status of the classifier test. A “0” indicates that the measured value falls between the lower and upper limit and is considered a “pass” situation. A “1” indicates that the measured value either falls below the lower limit or above the higher limit.
  • Page 113 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :MEASure#:FREQuency? Returns the latest frequency measurement of the flux density signal. :MEASure#:TIMe? Returns the latest period measurement of the flux density signal. :MEASure#:TEMPerature? Returns the latest temperature reading from a temperature-compensated Hall probe. The meaning of this value depends upon the selected unit of measure (Celsius, Kelvin or Fahrenheit).
  • Page 114 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :CALibration:ALL:ZERo:HSENsor:MODe <n> Specifies the auto zero mode of operation for all channels. where <n> 0 = DC Only 1 = Basic 2 = Advanced :CALibration#:ZERo:HSENsor:MODe? Returns the state or the auto zero mode for the selected channel.
  • Page 115 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual value could have been previously defined using the “:INPut#:OFFSet <NRf>” command, manually entered using the RELATIVE menu, or generated automatically using the probe as the input source. When <b> is “ONCe” the automatic RELATIVE operation is started. This command initiates the same process as the front-panel RELATIVE push button.
  • Page 116 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :OUTPut:VECTorsum:MODe <n> Sets the mode of operation for the vector sum analog output where: n = 0 >> Output Off n = 1 >> Output On :OUTPut:VECTorsum:MODe? Returns the mode of operation for the vector sum analog output where the...
  • Page 117 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Vector Summation :CALCulate:VSUMmation? Command Returns the latest vector summation value and angle results from the flux density readings of all three channels. The value will be between 0.0000000000 and ± 29999999. meaning of this value depends upon the selected unit of measure (gauss, tesla, etc.).
  • Page 118 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual :CALCulate#:HOLD:MAXimum:STATe? Returns the state of the MAX HOLD function “OFF” or “ON”. :CALCulate#:HOLD:MAXimum:CLEar The value being held by the MAX HOLD function is reset to 0. :CALCulate#:HOLD:MAXimum? Returns the value being held by the MAX HOLD function. The value will be between 0.0000000000 and ±...

  • Page 119: Section 9 Data Logging Utilities

    In addition to the remote communications capabilities where customers Overview can create their own data logging utilities, the 8000 Series Gaussmeters include several features to accommodate data storage in the form of log files that can be recorded and saved to either a USB memory device or internal flash memory.

  • Page 120: Logging Data

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Navigating from the MAIN menu to the DATA LOGGING menu as shown Logging Data below, opens the data logging options to “Log to the USB Drive” or “Log to the Internal Drive”...

  • Page 121: Screen Capture

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual The screen capture feature on the 8000 Series Gaussmeters allows the Screen Capture user to save a JPEG picture of the display that will be stored on a USB memory drive attached to the meter’s front panel USB port.
  • Page 122 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual This Page Intentionally Blank Section 9 – Data Logging Utilities...

  • Page 123: Section 10 Firmware Update

    8000 Series Gaussmeters. This section describes the procedures for updating the internal firmware of the 8000 Series Gaussmeter via either the Internet or USB flash memory device. From the [MAIN] system menu, navigating to [SYSTEM ⇒ FIRMWARE Firmware Update UPDATE] will open the Firmware Update screen as shown below.

  • Page 124: Appendix A Understanding Flux Density

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual APPENDIX A 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.

  • Page 125: Measurement Of Flux Density

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Measurement of Flux Density A device commonly used to measure flux density is the Hall Effect sensor. A Hall Effect sensor is a thin slice of a semiconductor material to which four leads are attached at the midpoint of each edge, as shown in Figure A-2.

  • Page 126: Appendix B Vector Summation Tutorial

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual APPENDIX B Vector Summation Tutorial The Model 8030 gauss/tesla meter is an extremely useful tool for acquiring simultaneous magnetic field measurements from two or three individual probes or from a 3-axis probe. The instrument presents vector summation results directly to the user, eliminating the need to perform manual calculations.

  • Page 127: Figure B-2 Vector Angle In A Two Dimensional System

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual In some cases it is useful to know the rotational angle, α , between one axis and the vector sum. Figure B-2 depicts this. The classical representation defines the angle between the x-axis and the vector sum, rotating counterclockwise.
  • Page 128 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual Figure B-3 Three Dimensional Coordinate System As in the two-dimensional system, it is often important to determine the angles between each axis and the summation vector in a three dimensional system, as shown in Figure B-4.

  • Page 129: Appendix C Error Codes

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual APPENDIX C Error Codes Meter Specific Errors Error Display Text SCPI Text Code No Error No Error The calibration data stored in the probe is not valid. Default values Invalid probe cal data will be used.
  • Page 130 F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual SCPI Specific Errors Error Description SCPI Text Code -100 SCPI command error Command error -200 SCPI execution error Execution error -300 SCPI device specific error Device specific error -350 SCPI error queue overflow...

  • Page 131: Appendix Dwarranty

    F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual APPENDIX D WARRANTY This instrument is warranted to be free of defects in material and workmanship by OECO, LLC (hereafter OECO). OECO’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.
  • Page 132 OECO, LLC 4607 SE International Way Milwaukie, OR 97222 Phone: 503-659-5999 www.fwbell.com...

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