Cleaning the Exterior Calibration Requirements Calibration Procedure Performing a Calibration Check Options and Accessories Fault Codes Symbolic Names of Calibration Constants Auxiliary Amplifier Data Operating Characteristics Current Derating Factors Standard Equipment UUT Connection Figures Keys that Exit Error Mode Command Summary by Function Serial Remote Control Commands Range Identifiers for Remote Commands Operating State Transitions Status Register Summary Functional Elements of Commands Interface Messages Accepted by the Calibrator Interface Messages Sent by the Calibrator Annotation for Shift Results Printout Time and Costs: Calibrator Calibration Volt-Hertz Capability Line Power Label and Switch Location UUT Connections: Resistance Meter Response vs.
Overview of Status Data Structure RSC Connector Pinout Accessing the Air Filter Wideband Module Calibration Connection These calibrators maintain high accuracy over a wide ambient temperature range, allowing them to test instruments in any environment, eliminating the restrictions to calibrate only in a temperaturecontrolled standards laboratory.
Specifications are provided at the end of this chapter. The calibrator is a fullyprogrammable precision source of the following:. The set includes:. Order additional copies of these instruction manuals separately using the part numbers provided. For ordering instructions, refer to the Fluke Catalog or contact a Fluke sales representative. This manual provides complete information for installing the calibrator and operating it from the front panel keys and in remote.
It also provides a glossary of calibration-related terms as well as general items such as specifications and error code information. The following topics are covered in this manual:.
The module is a high-accuracy, low-noise, extremely flat ac voltage source for calibrating rf voltmeters, with a frequency range of 10 Hz to 30 MHz. The output level is selected in volts or dBm through either the front panel controls or under remote control.
The wideband module is calibrated to the end of its standard-equipment output cable. The Fluke Model A Amplifier is available to extend the high voltage performance and current range of the calibrator:. Three amplifiers can be connected to the calibrator at the same time, but only one output can be active at a time. Once you have connected the amplifiers and configured the calibrator in a setup menu, amplifier operation is controlled by the calibrator.
Chapter 4 provides instructions for operating the A. The general specifications at the end of this chapter include specifications for operating the calibrator with the A.
For other amplifier specifications, refer to their instruction manuals. Table summarizes the extended capabilities offered by the A. Brief descriptions of the extended capabilities follow. The Fluke A Amplifier is an external unit operating under calibrator control to extend ac voltage drive capabilities and both ac and dc current output range.
A separate set of binding posts on the front panel of the A supplies extended-range ac and dc current outputs. Since most meters have a separate input terminal for the high current ranges, this eliminates the need to change cables during a procedure. The A can also be configured to source all current both standard calibrator-generated current and its own current through the A binding posts. Fluke supports your calibration needs with precision, high-quality equipment and a wide range of services.
The following paragraphs describe the support equipment and services offered by Fluke for the calibrator. For specifications and ordering instructions for this support equipment and other Fluke instruments, refer to the Fluke catalog, or contact a representative at a Fluke Sales and Service Center. The Fluke B is a rugged, easily transported solid state direct voltage reference standard with a highly predictable 10 V output.
This predictability allows the Fluke Standards Laboratory, as well as many Fluke customers, to completely eliminate fragile, saturated standard cells. Laboratories still maintain standard cells using the A and B as a transportable voltage standard, eliminating the need to transport their standard cells.
The B can be short-circuited, even for extended periods of time, without damage or loss of stability. The calibrator uses a 10 V reference standard such as the Fluke B in its semiautomated calibration procedure to establish external voltage traceability.
Chapter 7 describes this procedure. The program maintains the B that you keep in your laboratory. To accomplish this, the following occurs:. Fluke sends you a calibrated Fluke-owned B standard, together with allnecessary connecting cables and instructions for comparison with your 10 V reference standard.
You take a series of readings over a five-day period, and return the results to the Fluke Standards Laboratory. The A Resistance Standards, which are constructed of arrays of Fluke wirewound precision resistors, are ideally suited as support standards for the calibrator. Gain constants are checked and recalibrated as a part of the normal calibrator semi-automated calibration process. Since frequency flatness is determined by such stable parameters as circuit geometry and dielectric constants, flatness of the Wideband AC module has excellent long-term stability.
This stability gives the Wideband AC Module a two-year calibration cycle for flatness calibration. Flatness calibration is required only infrequently, and can be done when the calibrator is returned to a standards laboratory for periodic verification.
Chapter 7 of this manual contains the wideband gain calibration procedure. A worldwide network of Fluke service centers supports Fluke instruments and assists customers in many ways. Most service centers have standards and calibration laboratories certified by local national standards organizations.
The following is a partial list of the services provided by most service centers:. Delivery inside the U. These can be a simple warranty extension or an agreement that includes on-site support. Calibration service agreements are also available in many areas. Visit www. The calibrator is configured internally as an automated calibration system, with process controls and consistent procedures.
Internal microprocessors control all functions and monitor performance, using a switching matrix to route signals between modules. Complete automatic internal diagnostics, both analog and digital, confirm operational integrity.
Reference amplifiers maintain dc accuracy and stability. Of all technologies available, reference amplifiers have the lowest noise and best stability. Reference amplifiers in the calibrator go through special selection processes including long-term aging to ensure high reliability and performance well within specifications. The Fluke rms sensor is similar in principle to the traditional thermal voltage converter, but has a shorter time constant, virtually no reversal error, higher signal-to-noise ratio, and better frequency response.
The second Fluke rms sensor continuously monitors and corrects output voltage during operation. A patented bit digital-to-analog converter dac provides the calibrator with the ability to precisely vary its output. This is a pulse-width-modulated dac with linearity typically better than 0. As with the other internal functions, the linearity of the dac is automatically checked during calibration and analog diagnostics. The traditional practice of returning a calibrator to a standards laboratory at regular intervals for a full calibration is time consuming, expensive, and disruptive to the task to which the calibrator is being applied.
Moreover, it leaves gaps in confidence. Also, you must assume that drift is predictable enough so that performance is within limits between recalls. As a result, it can be completely calibrated in place to full specifications using a small number of convenient, portable, environmentally tolerant standards available from Fluke. As you will see below, this procedure is traceable to military standard requirements. When manufactured, each calibrator is calibrated and thoroughly verified with process metrology and calibration standards traceable to the U.
National Bureau of Standards. A certificate of calibration is included. This procedure involves no adjustments. It simply ensures internal processes are in control, and establishes parallel external traceability paths for internal functions such as ac transfers that are never adjusted or corrected.
Depending on your policies, you may initially decide to perform calibration verification more often. The calibrator makes this unnecessary and offers you a practical way to collect data unavailable with a traditional calibrator design about performance between calibrations. Environmentally-controlled internal check standards provide the primary reference points.
A stored table of calibration constants defines additional reference points for controlling the output. Traceable calibration and adjustment to the specified level of performance is accomplished in a semi-automated process that revises this table. You can print a list of changes through the serial RSC port, or send them to a computer through either the serial port or the IEEE port. Also on completion of calibration, the calibrator displays the largest proposed change.
The switch is recessed to allow the metrologist to cover it with a calibration sticker to guarantee calibrator integrity. Fluke recommends this is done every two years or as determined by the policy of your organization. The calibrator stores two sets of calibration constants: the set currently in use and the old set from the previous calibration.
This gives the calibrator the ability at any time to produce a calibration report of the differences between the present settings and the settings that were in effect before the last calibration.
If you request a calibration report after doing calibration but before saving the new constants, the report shows proposed changes to the calibration constants relative to the previously stored settings. Calibration checking is similar to calibration, except internal check standards are used as primary references no external standards are needed , and changes cannot be stored. The process produces a report similar to normal calibration, showing drift relative to internal check standards.
Therefore, an external computer can do the procedure unattended. A Fluke specification is a set of performance limits that all products must meet. To maintain consistent quality, Fluke calibrators are specified with enough margin to include temperature, line, and load extremes, plus additional margin for production. For some exacting applications, it can be helpful to know just how accurately a particular calibrator operates.
The proper way to do this is to accumulate a performance history by calibrating regularly and recording results on a control chart. Calibrating regularly and recording the results on a control chart is tedious and requires a large array of equipment. You do not have to use external standards.
Each calibration check produces a new set of data points for accumulating a historical record. When this process is externally automated, significant history can be accumulated much faster than with a manual calibration.
After calibration, you can make further fine adjustments to each range. Range adjustments are optional; they are not necessary to meet total uncertainty specifications. However, they do allow you to align your calibrator closer to your standards.
This is to calibrate the ranges that will not be adjusted. It also performs an initial adjustment for each range, and supplies flatness corrections for ac functions.
To ensure the validity of the specifications, a dc zeros calibration must be performed at least every 30 days. If more than 30 days elapse without a dc zeros calibration a warning message appears. This procedure does not require any external equipment or connections and takes approximately 2. By calibrating to the specifications in this chapter, you can maintain the high performance level throughout the life of your calibrator.
Specifications are valid after a warm-up period of twice the time the calibrator has been turned off, up to a maximum of 30 minutes. For example, if the calibrator has been turned off for five minutes, the warm-up period is ten minutes.
For information on selecting the confidence level, refer to Chapter 4. Absolute uncertainty includes stability, temperature coefficient, linearity, line and load regulation, and the traceability to external standards. Relative uncertainty specifications are provided for enhanced accuracy applications. To calculate absolute uncertainty, you must combine the uncertainties of your external standards and techniques with relative uncertainty.
Secondary performance specifications and operating characteristics are included in uncertainty specifications. They are provided for special calibration requirements such as stability or linearity testing.
Table Stability specifications are included in the Absolute Uncertainty values in the primary specification tables. Minimum output: 0 V for all ranges, except V for V range. Maximum load: 50 mA for 2. Notes: 1. Maximum output V from Hz. See Volt-Hertz capability in Figure Ta ble Note: 1. Stability specifications are included in Absolute Uncertainty values for the primary specifications.
External sense: Selectable for 2. The A will drive up to pF of load capacitance. Uncertainty specifications include loads to pF and pF as shown under "Load Limits.
For higher loads, load regulation is added. Specifications apply to displayed value. Two examples:. Refer to current derating factors table for loads outside of this range. Active compensation is limited to 11 mA load, and to 2 V burden. Use the follow i ng equat i on to determ i ne the error, and add th i s error to the correspond i ng uncerta i nty or stab i l i ty.
I and I L are expressed i n mA for short to 1. Use the following equat i on to determ i ne the error i n ppm and add th i s error to the correspond i ng uncerta i nty or stab i l i ty. Note: Maximum output from calibrator terminals is 2. Uncertainty specifications for mA and 2. Add to uncertainty specifications:. Stability specifications are included in the Absolute Uncertainty values for the primary specifications.
Temperature coefficient is an adder to uncertainty specifications. Burden voltage adder is an adder to uncertainty specifications that does not apply unless burden voltage is greater than 0. Settling time to full accuracy: 1 second for mA and mA ranges; 3 seconds for 2. Specifications are otherwise identical for all output locations. Welcome to ManualMachine. We have sent a verification link to to complete your registration. Log In Sign Up. Forgot password?
Enter your email address and check your inbox. Please check your email for further instructions. Enter a new password. Fluke Corporation Fluke Europe B. Box P. The Netherlands. Claims Immediately upon arrival, purchaser shall check the packing container against the enclosed packing list and shall, within thirty 30 days of arrival, give Fluke notice of shortages or any nonconformity with the terms of the order.
Using Absolute and Relative Uncertainty Specifications Using Secondary Performance Specifications Recommended Cable and Connector Types When to Use the External Voltage Guard Contents continued High Frequency AC Calibration Sequential and Overlapped Commands Commands Ignored When Not in Remote Commands that Require the Calibration Switch to be Set Instrument Status Change Enable Register Rack Mount Kits Y and Y B-1 Symbolic Names of Calibration Constants C-1 Glossary List of Tables Table Title Page List of Figures Figure Title Page Chapter 1 Introduction and Specifications Title Page Introduction and Specifications 1 Introduction About this Manual This manual provides complete information for installing the calibrator and operating it from the front panel keys and in remote.
Introduction and Specifications 1 How to Use this Manual How to Use this Manual Use the following list to find the location of specific information. Support Equipment and Services Fluke supports your calibration needs with precision, high-quality equipment and a wide range of services.
Introduction and Specifications 1 Support Equipment and Services To accomplish this, the following occurs: 1. Service Centers A worldwide network of Fluke service centers supports Fluke instruments and assists customers in many ways.
Connecting the Calibrator to a UUT When to Use External Sensing When to Use the Current Guard Four-Wire Vs. Two-Wire Resistance Connections Cable Connection Instructions Setting the Output DC Voltage Output AC Voltage Output DC Current Output AC Current Output Resistance Output Variable Phase Output Phase Locking to an External Signal Using an Auxiliary Amplifier Error Mode Operation Error Mode Overview Entering Error Mode Exiting Error Mode Using Error Mode Introduction to Offset, Scale, and Linearity Errors Offset Error Scale Error Linearity Error Combining the Error Types Programming an Offset Programming a Scale Factor Linearity Checking Using Offset and Scale Setting Output Limits Setting Voltage and Current Limits Sample Applications Calibrating Fluke 70 Series Multimeter Testing the Meter Calibrating the Meter Basic Calibration Procedure Calibration Setup Procedure Offset and Gain Calibration High Frequency AC Calibration Performing A Wideband Flatness Test Remote Operation Bus Setup Procedure Serial Remote Control Setup Procedure Exceptions for Serial Remote Control Command Syntax Information Parameter Syntax Rules Extra Space Characters Incoming Character Processing Response Message Syntax Input Buffer Operation Multiple Commands Coupled Commands Long Term Commands Local-to-Remote State Transitions Serial Poll Status Byte Service Request Enable Register Loading the SRE Event Status Register Loading the ESE Instrument Status Register Instrument Status Change Register Loading the ISCE Fault Queue Bus Communication Overview Definition: Queries and Commands Functional Elements Of Commands Interface Messages Remote Program Examples Verifying a Meter Remote Calibration Emulating a Fluke B or A Calibrator Entering Emulation Mode Exiting Emulation Mode Local-to-Remote Transitions Current Output Location Ohms Function Voltage and Frequency Ranges Rounding Numeric Entries Settling Times Programming External Sensing Overload Conditions Phase Lock Errors RSC Interface Specifications Setting Up and Connecting the Serial Interface Printing Calibration Reports Calibration Shift Results Calibration Check Shift Results Generating a Printout Operator Maintenance Cleaning the Air Filter Cleaning the Exterior Calibration Requirements Calibration Procedure Range Calibration Performing a Calibration Check Options and Accessories Fault Codes Symbolic Names of Calibration Constants Auxiliary Amplifier Data Standard Equipment UUT Connection Figures Keys that Exit Error Mode Command Summary by Function Serial Remote Control Commands Range Identifiers for Remote Commands Operating State Transitions Status Register Summary Functional Elements of Commands Interface Messages Accepted by the Calibrator Interface Messages Sent by the Calibrator Annotation for Shift Results Printout Time and Costs: Calibrator Calibration Line Power Label and Switch Location UUT Connections: Resistance Meter Response vs.
Overview of Status Data Structure RSC Connector Pinout Accessing the Air Filter Wideband Module Calibration Connection These calibrators maintain high accuracy over a wide ambient temperature range, allowing them to test instruments in any environment, eliminating the restrictions to calibrate only in a temperaturecontrolled standards laboratory.
Specifications are provided at the end of this chapter. The calibrator is a fullyprogrammable precision source of the following:. The set includes:. Order additional copies of these instruction manuals separately using the part numbers provided. For ordering instructions, refer to the Fluke Catalog or contact a Fluke sales representative. This manual provides complete information for installing the calibrator and operating it from the front panel keys and in remote. It also provides a glossary of calibration-related terms as well as general items such as specifications and error code information.
The following topics are covered in this manual:. The module is a high-accuracy, low-noise, extremely flat ac voltage source for calibrating rf voltmeters, with a frequency range of 10 Hz to 30 MHz.
The output level is selected in volts or dBm through either the front panel controls or under remote control. The wideband module is calibrated to the end of its standard-equipment output cable. The Fluke Model A Amplifier is available to extend the high voltage performance and current range of the calibrator:. Three amplifiers can be connected to the calibrator at the same time, but only one output can be active at a time.
Once you have connected the amplifiers and configured the calibrator in a setup menu, amplifier operation is controlled by the calibrator. Chapter 4 provides instructions for operating the A. The general specifications at the end of this chapter include specifications for operating the calibrator with the A. For other amplifier specifications, refer to their instruction manuals. Table summarizes the extended capabilities offered by the A.
Brief descriptions of the extended capabilities follow. The Fluke A Amplifier is an external unit operating under calibrator control to extend ac voltage drive capabilities and both ac and dc current output range.
A separate set of binding posts on the front panel of the A supplies extended-range ac and dc current outputs. Since most meters have a separate input terminal for the high current ranges, this eliminates the need to change cables during a procedure. The A can also be configured to source all current both standard calibrator-generated current and its own current through the A binding posts.
Fluke supports your calibration needs with precision, high-quality equipment and a wide range of services. The following paragraphs describe the support equipment and services offered by Fluke for the calibrator. For specifications and ordering instructions for this support equipment and other Fluke instruments, refer to the Fluke catalog, or contact a representative at a Fluke Sales and Service Center.
The Fluke B is a rugged, easily transported solid state direct voltage reference standard with a highly predictable 10 V output. This predictability allows the Fluke Standards Laboratory, as well as many Fluke customers, to completely eliminate fragile, saturated standard cells. Laboratories still maintain standard cells using the A and B as a transportable voltage standard, eliminating the need to transport their standard cells. The B can be short-circuited, even for extended periods of time, without damage or loss of stability.
The calibrator uses a 10 V reference standard such as the Fluke B in its semiautomated calibration procedure to establish external voltage traceability. Chapter 7 describes this procedure. The program maintains the B that you keep in your laboratory.
To accomplish this, the following occurs:. Fluke sends you a calibrated Fluke-owned B standard, together with all-necessary connecting cables and instructions for comparison with your 10 V reference standard. You take a series of readings over a five-day period, and return the results to the Fluke Standards Laboratory.
The A Resistance Standards, which are constructed of arrays of Fluke wirewound precision resistors, are ideally suited as support standards for the calibrator.
Stability of the resistance transfer standards and their temperature coefficients make them ideal for easy transport to and operation in the calibrator's working environment. Gain constants are checked and recalibrated as a part of the normal calibrator semi-automated calibration process. Since frequency flatness is determined by such stable parameters as circuit geometry and dielectric constants, flatness of the Wideband AC module has excellent long-term stability.
This stability gives the Wideband AC Module a two-year calibration cycle for flatness calibration. Flatness calibration is required only infrequently, and can be done when the calibrator is returned to a standards laboratory for periodic verification.
Chapter 7 of this manual contains the wideband gain calibration procedure. A worldwide network of Fluke service centers supports Fluke instruments and assists customers in many ways. Most service centers have standards and calibration laboratories certified by local national standards organizations. The following is a partial list of the services provided by most service centers:. Delivery inside the U. These can be a simple warranty extension or an agreement that includes on-site support.
Calibration service agreements are also available in many areas. Visit www. The calibrator is configured internally as an automated calibration system, with process controls and consistent procedures. Internal microprocessors control all functions and monitor performance, using a switching matrix to route signals between modules.
Complete automatic internal diagnostics, both analog and digital, confirm operational integrity. Reference amplifiers maintain dc accuracy and stability. Of all technologies available, reference amplifiers have the lowest noise and best stability. Reference amplifiers in the calibrator go through special selection processes including long-term aging to ensure high reliability and performance well within specifications. The Fluke rms sensor is similar in principle to the traditional thermal voltage converter, but has a shorter time constant, virtually no reversal error, higher signal-to-noise ratio, and better frequency response.
The second Fluke rms sensor continuously monitors and corrects output voltage during operation. A patented bit digital-to-analog converter dac provides the calibrator with the ability to precisely vary its output. This is a pulse-width-modulated dac with linearity typically better than 0. As with the other internal functions, the linearity of the dac is automatically checked during calibration and analog diagnostics.
The traditional practice of returning a calibrator to a standards laboratory at regular intervals for a full calibration is time consuming, expensive, and disruptive to the task to which the calibrator is being applied. Moreover, it leaves gaps in confidence. You must rely on manufacturer's specifications to determine if a calibrator will perform acceptably in an operating environment outside the lab.
Also, you must assume that drift is predictable enough so that performance is within limits between recalls. As a result, it can be completely calibrated in place to full specifications using a small number of convenient, portable, environmentally tolerant standards available from Fluke.
As you will see below, this procedure is traceable to military standard requirements. When manufactured, each calibrator is calibrated and thoroughly verified with process metrology and calibration standards traceable to the U. National Bureau of Standards. A certificate of calibration is included.
It simply ensures internal processes are in control, and establishes parallel external traceability paths for internal functions such as ac transfers that are never adjusted or corrected. Depending on your policies, you may initially decide to perform calibration verification more often. The calibrator makes this unnecessary and offers you a practical way to collect data unavailable with a traditional calibrator design about performance between calibrations. Environmentally-controlled internal check standards provide the primary reference points.
A stored table of calibration constants defines additional reference points for controlling the output. Traceable calibration and adjustment to the specified level of performance is accomplished in a semi-automated process that revises this table.
You can print a list of changes through the serial RSC port, or send them to a computer through either the serial port or the IEEE port. Also on completion of calibration, the calibrator displays the largest proposed change.
The switch is recessed to allow the metrologist to cover it with a calibration sticker to guarantee calibrator integrity. Fluke recommends this is done every two years or as determined by the policy of your organization. The calibrator stores two sets of calibration constants: the set currently in use and the old set from the previous calibration.
This gives the calibrator the ability at any time to produce a calibration report of the differences between the present settings and the settings that were in effect before the last calibration. If you request a calibration report after doing calibration but before saving the new constants, the report shows proposed changes to the calibration constants relative to the previously stored settings.
Calibration checking is similar to calibration, except internal check standards are used as primary references no external standards are needed , and changes cannot be stored. The process produces a report similar to normal calibration, showing drift relative to internal check standards. Therefore, an external computer can do the procedure unattended.
A Fluke specification is a set of performance limits that all products must meet. To maintain consistent quality, Fluke calibrators are specified with enough margin to include temperature, line, and load extremes, plus additional margin for production. For some exacting applications, it can be helpful to know just how accurately a particular calibrator operates. The proper way to do this is to accumulate a performance history by calibrating regularly and recording results on a control chart.
Calibrating regularly and recording the results on a control chart is tedious and requires a large array of equipment. You do not have to use external standards.
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