MUlti_Function_Calibrator_March_2015.docx

High compliance multifunction calibrator CSS 02-249

CSS 02-249

CALIBRATION STANDARDS SPECIFICATION PROCUREMENT PACKAGE

High Compliance Multifunction Calibrator

DISTRIBUTION STATEMENT C.

DISTRIBUTION AUTHORIZED TO U. S. GOVERNMENT

AGENCIES

AND THEIR CONTRACTORS TO PROTECT PUBLICATIONS REQUIRED FOR OFFICIAL USE OR FOR ADMINISTRATIVE OR OPERATIONAL

PURPOSES ONLY. OTHER REQUESTS FOR THIS DOCUMENT

SHALL

BE REFERRED TO MEASUREMENT SCIENCE DIRECTORATE, NAVAL SURFACE WARFARE CENTER, CORONA DIVISION, P.O. BOX 5000, CORON

A

A, CA, 91718-5000.

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

March 2015

CALIBRATION STANDARDS SPECIFICATION PROCUREMENT PACKAGE

High Compliance Multifunction Calibrator

Prepared by:

Gerald Marts Project Engineer

Electrical & Electronic Systems (MS 31) Measurement Science Department Naval Surface Warfare Center, Corona Division P.O. Box 5000 Corona, CA 91718-5000

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

Table of Contents

High compliance multifunction calibrator CSS 02-249 iii Multi Function Calibrator March 2015

1.0 SCOPE

1.1 General. This document specifies the minimum requirements for a High Compliance Multifunction Calibrator. This equipment may be of commercial design. It is intended to be used by Navy personnel in shipboard and shore-based calibration laboratories and for on-site, in-place calibration. The equipment will be used primarily on bench top applications for the testing of test sets and other applications requiring high compliance and burden tests that may also pose a danger to unprotected sourcing equipment (up to 240 Vrms, 60 or 400 Hz). For the purpose of this CSS, the High Compliance Multifunction Calibrator shall be referred to as the “calibrator”.

1.2 Usage. Equipment covered by this CSS is intended for testing equipment and systems in the worldwide natural and controlled environments in which Military equipment is operated. Equipment will also be subjected to operational conditions aboard land, sea and air vehicles, both military and commercial, during periods of operation, transportation, and storage. The requirements of this CSS are tailored to the intended use of the equipment. Specific requirements of MIL-PRF-28800F, as identified in this CSS, are invoked according to the class of equipment.

1.3 Classification. Test equipment specified herein is categorized by class, (requirements arising from the intended operational environment), as specified below in 1.3.1 Class through 1.3.3 Color. The class is assigned by the most severe environmental condition expected for the equipment.

1.3.1 Class. The calibrator shall conform to Class 3 requirements in accordance with MIL-PRF-28800F for Navy shipboard and shore-based laboratory use as specified in this CSS.

1.3.2 Enclosure. For the purpose of this CSS, the enclosure refers to the case for each individual major component. The enclosure provides protection for the individual major component during storage, handling, and use.

1.3.3 Color. The color of the calibrator and the transit cases shall be the color normally provided by the manufacturer but shall not be green, magenta, or red.

1.4 Navy shipboard use. Electronic test equipment furnished to the Navy that uses material restricted for Navy use (see 3.2.3.1 Material restricted for Navy use), or that exceeds the size limitations (see 3.6.1 Maximum dimensions, Navy shipboard applications) of this specification, requires approval by the Navy prior to procurement.

2.0 APPLICABLE DOCUMENTS

2.1 Reference documents. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issues of these documents shall be those in effect on the date of this solicitation.

DEPARTMENT OF DEFENSE specifications

(Copies of DoD specifications are available online at http://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-130 - Standard Practice of Identification Marking of U.S. Military Property (Copies of DoD Standards are available online at http://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

DEPARTMENT OF DEFENSE handbookS MIL-HDBK-781 - Reliability Test Methods, Plans, and Environments for Engineering Development, Qualification and Production (Copies of DoD Handbooks are available online at http://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

NIST Special Publication 811 - Guide for the Use of the International System of Units (SI) (Copies of NIST documents are available online at http://physics.nist.gov/cuu/pdf/sp811.pdf or Standards Information Center, 100 Bureau Drive, Stop 2100 Gaithersburg, MD 20899-2100 or Email: ncsci@nist.gov Phone: (301) 975-4040.)

American National Standards Institute (ANSI)

(Copies of ANSI documents are available from http://webstore.ansi.org/ or ANSI Attn: Customer Service Department, 25 W 43rd Street, 4th Floor, New York, NY, 10036 Electronic Industries association (eia) EIA RS-310 - Racks, Panels and Associated Equipment (Copies of EIA documents are available online at http://www.eia.org or Electronic Industries Association, 2500 Wilson Blvd, Arlington, VA 22201.

institute of electrical and electronics engineers (ieee) IEEE 260.1 - IEEE Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units) (Copies of IEEE documents are available from http://www.ieee.org or IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854-1331.)

International Electrotechnical Commission (IEC)

(Copies of IEC documents are available online at http://www.iec.ch/ or EC publications are available in the US from the Sales Department. American National Standards Institute, 11 West 42nd Street, 113 Floor, New York, NY 10036, USA.)

International Organization for Standardization (ISO) ISO 7779 - Measurement of Airborne Noise Emitted by Information Technology and Telecommunications Equipment (Copies of ISO documents are available online at http://www.iso.org/iso/home.html or International Organization for Standardization (ISO) 1, ch. de la Voie-Creuse, Case postale 56, CH-1211 Geneva 20, Switzerland) LAN EXTENsIONS FOR INSTRUMENTATION (LXI) CONSORTIUM LXI Standard Revision 1.3-2008 - LAN Extensions for Instrumentation (LXI) Standard (Copies of LXI documents are available online at http://www.lxistandard.org or LXI Consortium, PO Box 1016, Niwot, CO 80544-1016.)

STANDARD COMMANDS FOR PROGRAMMABLE INSTRUMENTS (SCPI) CONSORTIUM

SCPI Volume I -1999 - Standard Commands for Programmable Instruments (SCPI) (Copies of SCPI documents are available online at http://www.ivifoundation.org or IVI Foundation Corporate Office, PO Box 1016, Niwot, CO 80544-1016.)

World Wide Web (W3C) consortium SVG Specification 1.1 - 2003 - Scalar Vector Graphics (SVG) 1.1 Specification (Copies of W3C documents are available online at http://www.w3.org)

DOCUMENT MANAGEMENT

ISO/IEC 32000-1:2008. - Portable Document Format (PDF)

(Copies of ISO/IEC 32000-1:2008 are available online at https://www.google.com/?gws_rd=ssl#q=standard+iso%2Fiec+32000)

2.2 Order of precedence. In the event of conflict between the text of this CSS and the references cited herein, the text of this specification shall take precedence. Nothing in this CSS, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.0 REQUIREMENTS

3.1 Safety. The calibrator shall comply with the safety requirements of IEC 61010-1. For safety, all accessible surfaces of the calibrator shall be at ground potential. The power cable shall include a safety ground conductor.

3.2 Equipment components. Parts, materials, and process shall be as specified below in 3.2.1 Finish through 3.2.3.3 Combination of materials.

3.2.1 Finish. The calibrator shall be the finish normally provided by the manufacturer.

3.2.2 Interchangeability. A model number shall be designated for all units provided. All units and the replaceable assemblies, subassemblies, and parts comprising the unit shall be interchangeable on a noninterference basis.

3.2.3 Restricted materials. Restricted materials shall be as specified below in 3.2.3.1 Material restricted for Navy use through 3.2.3.3 Combination of materials.

3.2.3.1 Material restricted for Navy use. The materials and parts specified in a through c shall not be used in equipment for the Navy except as specified herein. An exception is made for small lithium batteries used for memory backup as specified in 3.5.1.2.4 Lithium batteries for lithium battery types approved for use.

Mercury, including mercury batteries Radioactive material Lithium electrochemical cells

3.2.3.2 Other restricted materials and gases. The calibrator shall not contain materials that promote the premature failure of the calibrator or that present a health hazard under normal use or storage conditions as specified below in 3.2.3.2.1 Organic materials through 3.2.3.2.5 Helium.

3.2.3.2.1 Organic materials. The calibrator shall not contain materials prone to organic decay or that act as a nutrient for the growth of multicelled organisms.

3.2.3.2.2 Flammable materials. The calibrator shall not contain materials that ignite into flames at operating or storage temperatures.

3.2.3.2.3 Explosive materials. The calibrator shall not contain materials that explode at operating or storage temperatures.

3.2.3.2.4 Carcinogens. Certain chemicals have been identified in the Occupational Safety and Health Act (OSHA) as cancer-producing substances (carcinogens). Materials that might contain these chemicals shall not be used unless specifically required and approved by the procuring Navy activity.

3.2.3.2.5 Helium. Helium shall not be used as pressurizing gas in sealed units containing electron tubes. When necessary to use helium for leak detection purposes, exposure shall be limited to the time necessary for the test, followed by thorough purging.

3.2.3.3 Combination of materials. The calibrator shall contain no combination of materials that cause deterioration of any material contained in the calibrator due to the effects of outgassing.

3.3 Design and construction. The calibrator shall be designed and constructed to permit compliance with all applicable requirements of its class, as defined in this CSS as well as the performance, accuracy, and other requirements in this CSS.

3.3.1 Operator adjustments and controls. Operator adjustments and controls shall be as specified below in 3.3.1.1 Operator adjustments and 3.3.1.2 Operator controls.

3.3.1.1 Operator adjustments. The calibrator shall include built-in adjustments or compensating devices for any function or parameter that would exceed the specified tolerance within the calibration interval defined in 3.13.2 Calibration interval. Under all specified service conditions the variation of any adjustment or control shall produce the desired control action to bring the calibrator within tolerance.

3.3.1.2 Operator controls. Operating controls and indicators shall be readily accessible to the operator from the front of the calibrator. The readings presented on the controls and indicators shall be available to the operator without conversion or calculation.

3.3.2 Connectors, electric. Provision shall be made to ensure that connectors will be mated only with the appropriate counterparts. Where design considerations require close proximity of connectors of similar configuration, the mating connectors shall be suitably coded or marked. The live or hot side of unmated connectors shall be protected against shorting.

3.3.3 Wiring, internal. Internal wiring practices shall be such that the wiring shall not be damaged during normal maintenance and calibration.

3.3.4 Internal cooling. The calibrator shall be capable of operating without interruption for at least 24 hours at the maximum operating temperature as specified in this CSS without overheating, losing power or otherwise exhibiting failure. This requirement is invoked only for currents less than 2 A and voltages of 1000 V but less than 20 mA current burden.

3.3.4.1 Cooling devices. Cooling devices used in the calibrator shall be an integral part of the calibrator and not degrade any aspect of performance or safety.

3.3.5 Front panel display indicators. Front panel/control panel display indicators designed to present change-of-state information to the operator shall be distinguishable at a distance of 1 m in a maximum ambient light level of 100 foot-candles (fc) and a minimum light level of 10 fc. All display indicators shall be discernible at viewing angles from 0 to 45 degrees

3.3.6 Self-test capability. The calibrator shall perform an automatic diagnostic self-test at startup. The self test shall determine operational readiness and isolate faulty modules. The information provided by the self-test shall indicate operational readiness.

3.4 Digital interface. A digital interface shall be provided and shall meet the requirements as specified below in 3.4.1 Digital interface requirements.. The digital interface shall include an IEEE 488.2 General Purpose Interface Bus conforming to IEC 60488-2:2004 /IEEE 488.2-1992 or an IEEE 802.3 Ethernet connection (using an RJ-45 connector) conforming to LAN Extensions for Instrumentation (LXI) Standard.

3.4.1 Digital interface requirements. The digital interface shall have the programmable capability to control each device function including all ranges, modes, and levels. The digital interface shall support control of the device without the need for any proprietary drivers or software. The syntax and style of programming commands shall conform to the Standard Commands for Programmable Instruments (SCPI). Primary power control and other non-measurement functions need not be controllable through the digital interface.

3.5 Electrical power sources and connections. The electrical power sources and connections shall be as specified below in 3.5.1 Electrical power source and 3.5.2 Electrical power connections.

3.5.1 Electrical power source. The calibrator shall operate from the input power conditions specified in 3.5.1.1 Power consumption through 3.5.1.2.4 Lithium batteries. If the calibrator can operate from multiple power sources, the calibrator shall operate within each required range without changing manually operated devices such as tapped transformers (variable setting transformers) and other similar devices for compensation. All selectable power setting controls shall be externally accessible.

3.5.1.1 Power consumption. The maximum power for operation of a calibrator component that requires an external single phase 115 Vrms power source shall not exceed 1500 watts.

3.5.1.2 Nominal and alternate power source. The calibrator shall operate at:

120 Vrms Single-phase 50 Hz and 60 Hz

3.5.1.2.1 Steady-state conditions. The performance and accuracy of the calibrator shall not be adversely affected when operated under any combination of conditions a through c. Tolerance values are derived from, and referenced to, the nominal values specified for voltage and frequency in 3.5.1.2 Nominal and alternate power source above. For definitions of voltage waveform factor and harmonics, see MIL-PRF-28800F paragraph 6.5.1a Voltage waveform deviation factor and 6.5.1b Harmonics.

a. The steady-state voltage-tolerance shall be ±5%.

b. The steady-state frequency-tolerance shall be ±5%.

c. The deviations in waveform characteristics shall be as in 1 through 4.

1. Waveform deviation factor of ±10%

2. Total harmonics of ±10%

3. Individual harmonics of ±5%

4. Crest factor of 1.27 to 1.56

3.5.1.2.2 Transient-state conditions. Operation of the calibrator during voltage and frequency transients shall be in accordance with a and b for transients that recover to within the steady-state tolerance band within 500 ms. The calibrator performance may be impaired during the transient. Transient values are derived from, and referenced to, the nominal values specified for voltage and frequency.

d. Voltage transients within the range of ±10% to ±30% shall not cause the operation of the calibrator to be impaired for longer than 30 seconds following the transient and not cause loss of information stored in a volatile memory.

e. Frequency transients within the range of ±5% to ±10% shall not cause the operation of the calibrator to be impaired for longer than 30 seconds following the transient and not cause loss of information stored in a volatile memory.

3.5.1.2.3 Interruption of power source. Voltage or frequency interruptions shall not cause damage to the calibrator. A power source interruption is when the voltage falls in the range of 0 to 70% of nominal or frequency falls in the range of 0 to 90% of nominal. Calibrator performance is not required during interruption of the power source. After power interruptions of any duration, the calibrator shall automatically resume operation at either the last operating condition before interruption, or a default power-up condition.

3.5.1.2.4 Lithium batteries. Commercial UL approved equipment that contains lithium batteries (size AA or button cell type) used for memory backup are approved for use under a general blanket approval waiver. Lithium or re-chargeable batteries larger than the type specified above requires a separate approval. Tadiran liquid cathode batteries, SO2 (sulfur dioxide) batteries or lithium vinyl chloride “liquid cathode” batteries are strictly prohibited. For the purpose of this specification, a lithium (size AA or button cell type) battery as described above is approved.

3.5.2 Electrical power connections. The requirements specified in 3.5.2.1 Input power cable through 3.5.2.6 Battery compartment shall apply. The calibrator shall operate with a ground at the primary power source on either or neither side of the single phase input power line.

3.5.2.1 Input power cable. The input power cable shall be a detachable power cable normally provided by the manufacturer.

3.5.2.2 Input power switch. The operator shall be able to energize the calibrator from the front panel. A standby capability may be incorporated to activate and deactivate the calibrator. If such a capability is provided, suitable warnings shall be placed in the operating and service manuals and on the calibrator to warn the operator of possible shock hazards during servicing, due to partially activated power supplies.

3.5.2.3 Power selection switch. When the configuration of the calibrator requires a power selection switch, the calibrator shall be provided set to operate at 115 Vrms or 120 Vrms. A safety mechanism shall be incorporated to prevent the accidental switching between voltage selections.

3.5.2.4 Excessive current drain protection. An automated safety mechanism (circuit breaker/fuse) shall be incorporated to automatically disconnect the calibrator in the event of current being drawn that is in excess of the calibrator rating. The mechanism shall be available from an exterior panel.

3.5.2.5 Indicators. Visual indication shall be provided on the front panel to indicate when the calibrator is energized.

3.5.2.6 Battery compartment. If a battery is used to store constants it shall be field changeable. The compartment shall only provide access to the battery. The battery compartment shall provide protection from external sources that could damage the battery and protect the calibrator from deteriorated batteries. The battery polarity, voltage, and type shall be marked in a prominent place on or adjacent to the battery compartment.

3.6 Enclosure physical characteristics. The physical characteristics of the calibrator shall be as specified in 3.6.1 Dimensions through 3.6.4.6 Chassis fasteners.

3.6.1 Dimensions. Maximum dimensions of the calibrator including handles and end covers, if any, shall not exceed 8 inches in height, 17.5 inches in width including any handles, and 25 inches in depth.

3.6.2 Weight. The weight of the calibrator including all end covers and accessories shall not exceed 70 pounds.

3.6.3 Mechanical stability. The calibrator shall be designed to preclude tipping during normal handling and operation.

3.6.3.1 Enclosure attitude. The calibrator shall be mechanically stable when positioned in its normal attitude on a bench for horizontal viewing of the front panel, and when placed in its alternate attitude on the floor or deck for vertical viewing of the front panel. The size and weight limitations of 3.6.1 Dimensions and 3.6.2 Weight apply to this requirement.

3.6.4 Enclosure requirements. The calibrator enclosure shall be as specified in 3.6.4.1 Cover through 3.6.4.6 Chassis fasteners.

3.6.4.1 Cover. The enclosure shall have end covers. The enclosure and cover interface shall have a gasket or offset lap seam to prevent entry of dirt or spray-type moisture or contaminates during shipping or storage.

3.6.4.2 Component protection. Panels shall be designed to conform to the bench handling requirement of 3.9.5 Bench handling.

3.6.4.3 Handles. One or more handles shall be provided. The number and location of handles shall be such that the load distribution per handle shall not exceed 20 kg. Handles shall be located above the calibrator center of gravity to ensure carrying stability. Handles shall permit compliance with the enclosure attitude provisions specified above in 3.6.3.1 Enclosure attitude.

3.6.4.4 Corners. All corners shall be designed to preclude injury to personnel or damage to material. All corners shall be adequately reinforced to protect the instrument from damage during shipping, handling and storage.

3.6.4.5 Connections and controls. All external electrical connections (except power connections) and operating controls shall be on the front panel. Electrical power connections shall be on the rear.

3.6.4.6 Chassis fasteners. The chassis shall be securely fastened within the enclosure conforming to the maintainability requirements of 3.12.3 Maintenance provisions.

3.7 Transit case. A transit case shall be provided to protect the contained calibrator and accessories during shipping and storage. The case shall have a gasket to prevent entry of dirt or spray-type moisture or contaminates during shipping or storage. The transit case is not an integral part of the calibrator. It need not provide for operational capability of the calibrator when enclosed. The physical characteristics of the transit case shall be as specified in 3.7.1 Cover, transit case through 3.7.6 Pressure equalizing valve, transit case. In the case that the calibrator can be supported on site with Navy owned equipment then a transit case will not be required.

3.7.1 Cover, transit case. The transit case shall have a cover that can be closed and fastened. Fasteners shall allow for quick opening. If the cover is removable, fasteners shall not interfere with cover removal.

3.7.2 Stacking provisions, transit case. The transit case shall have a geometric configuration that permits stacking without harm to the enclosure or its contents. The minimum stacking height (expressed as a quantity of equipment in excess of one) shall be 4 units.

3.7.3 Handles, transit case. One or more handles shall be provided. The number and location of handles shall be such that the load distribution per handle shall not exceed 20 kg. Handles shall be located above the calibrator center of gravity to ensure carrying stability. Handles shall permit compliance with the enclosure attitude provisions specified in 3.6.3.1 Enclosure Attitude.

3.7.3.1 Handles, hard transit case. The grip portion of the handles shall be of a nonmetallic material at least 89 mm in length with a 19 mm diameter or other approved cross section that is shaped to fit the hand comfortably. Handles shall stop open at 90 degrees, and shall be returned to a closed position by a spring-loaded or retaining mechanism when not in use. Handles shall be recessed or protected. A handle located on the top of the enclosure shall be recessed to facilitate stacking.

3.7.4 Accessory stowage, transit case. The transit case shall have provisions for the stowage of accessories, operating instructions, removable power cables, signal leads, and designated spares. Stowage shall not adversely affect the carrying stability of the calibrator and shall be contained in a manner that prevents damage to the accessories or calibrator during transit.

3.7.5 Corners, transit case. All hard edged corners shall be designed to preclude injury to personnel or damage to material. All corners shall be adequately reinforced to protect the instrument from damage during shipping, handling and storage.

3.7.6 Pressure equalizing valve, transit case. Air tight transit cases shall have a mechanism for equalizing air pressure within the enclosure, when the enclosure is sealed. The mechanism provided shall not protrude beyond the transit case enclosure.

3.8 Marking and identification. Marking and identification of the calibrator shall be as specified below in 3.8.1 Marking through 3.8.2.2 Item unique identification.

3.8.1 Marking. The calibrator shall be marked in a manner that does not adversely affect safety or performance.

3.8.1.1 Reference designations. Reference designations shall be used to identify each part for its particular circuit application. Subminiaturized and nonrepairable assemblies need not be marked with reference designations. Reference designator usage shall be in accordance with ANSI Y32.2 and ANSI Y32.16.

3.8.1.2 Warning markings. Warning markings shall warn of the location, the nature, and the extent of a hazard. Letters of warning markings shall be of clearly legible gothic capitals. Warning markings shall have high contrast between the letter and background colors. The markings shall be as permanent as normal life expectancy of the calibrator, and located as close as possible to the point of danger. Warning markings indicating circuits of more than 500 Vdc or Vrms shall read:

DANGER HIGH VOLTAGE (maximum applicable voltage) VOLTS Markings shall be in accordance with the requirements of ANSI/ISA-S82.02.01-1999, which requires the warning and caution markings specified in a through c:

The precautionary signal word shall be at least 2.5 mm high.

The text shall be at least 1.5 mm high and contrasting in color to background.

If molded or stamped in a material, text shall be at least 2.0 mm high and, if not contrasting in color, a depth or raised height of at least 0.5 mm.

3.8.1.3 Panel markings and processes. Panel markings shall enable the operator to identify the functions and use of all items requiring operator intervention.

3.8.2 Equipment identification. All calibrators, excluding small accessory items contained within a reusable pouch or container, shall be identified with the items specified in a through d.

Manufacture name Calibrator model number with installed options Calibrator nomenclature Serial number

3.8.2.1 Identification plate. An identification plate shall be affixed to the calibrator enclosure when the enclosure also serves as the transit case. The identification plate shall contain the information provided below in 3.8.2.1 Identification plate, single case.

3.8.2.1.1 Identification plate, single case. The identification plate shall contain the information provided in a through d.

f. Configuration model number or calibrator model number with installed options

g. Configuration or calibrator nomenclature

h. Configuration or manufacturer CAGE

i. Configuration serial number

3.8.2.1.2 Identification plate, material. The following materials with minimum thickness of 1/32 inch are recommended:

j. Brass

k. Corrosion resistant steel

l. Aluminum alloy

3.8.2.1.3 Identification plate, marking. The plate background color shall be black. It shall have a minimum character size of 1/8 inch. All characters shall be permanent using best commercial practices for laser engraving, etching, or photosensitive marking of material.

3.8.2.2 Item unique identification (IUID). DFARS clause 252-211.7003 is invoked. A two dimensional Unique Identification (IUID) data matrix conforming to MIL-STD-130 shall be included on the identification plate.

3.9 Environmental requirements. The calibrator environmental performance requirements shall be as specified below in 3.9.1 Warm-up through 3.9.8 Acoustic noise. It shall conform to the specified performance when subjected to the environmental conditions of this specification.

3.9.1 Warm-up. The calibrator shall comply with the specified performance requirements after a 30 minute warm-up period preceded by a one hour non operating temperature stabilization period.

3.9.2 Temperature and humidity. The temperature ranges and humidity limits for both operating and not operating conditions shall be as specified below in 3.9.2.1 Temperature not operating through 3.9.2.3 Humidity.

3.9.2.1 Temperature not operating. The calibrator shall conform to the specified performance and accuracy requirements after being stored in the transit case at temperatures ranging from -20 to 65 ºC.

3.9.2.2 Temperature operating. The calibrator shall conform to the specified performance and accuracy while being operated at temperatures over the range 18 to 28 ºC.

3.9.2.3 Humidity. The calibrator shall conform to the specified performance and accuracy for conditions where the relative humidity is 10 to 60 ±5% in the temperature range of 18 to 28 ºC.

3.9.3 Altitude. The calibrator components shall conform to the specified performance and accuracy requirements after being subjected to an altitude of 33,000 feet for 12 hours with calibrator not operating.

3.9.4 Vibration. Vibration shall be as specified below in 3.9.4.1 Vibration, random or 3.9.4.2 Vibration, sinusoidal and 3.9.4.3 Bounce, loose cargo.

3.9.4.1 Vibration, random. The calibrator shall conform to specified performance and accuracy requirements after the random vibration conditions specified in MIL-PRF-28800F Table 3 when tested in accordance with MIL-PRF-28800F paragraph 4.5.5.3.1 Random vibration test.

3.9.4.2 Vibration, sinusoidal. The calibrator shall conform to specified performance and accuracy requirements after the sinusoidal vibration conditions specified in MIL-PRF-28800F Table 4 when tested in accordance with MIL-PRF-28800F paragraph 4.5.5.3.2 Sinusoidal vibration test.

3.9.4.3 Bounce, loose cargo : The calibrator in its transit case shall conform to specified performance requirements of MIL-PRF-28800F paragraph 4.5.5.3.3 Loose Cargo Bounce test as specified in steps 1 through 3.

3.9.5 Bench handling. The calibrator shall conform to the specified performance and accuracy requirements and there shall be no damage to any controls, indicators, or fuseholders, after being tested in accordance with MIL-PRF-28800F paragraph 4.5.5.4.3 Bench handling test.

3.9.6 Fungus resistance. The calibrator shall not contain materials that provide nutrients for the growth of fungus. When a transit case is specified, it shall not contain materials that provide nutrients for the growth of fungus.

3.9.7 Salt atmosphere. Calibrator component surfaces exposed to atmosphere shall have an anti-corrosion treatment to provide corrosion protection.

3.9.8 Acoustic noise. The calibrator shall not generate acoustic noise in excess 70 dBA sound pressure level (SPL) when measured at the operator and bystander positions, in accordance with ISO 7779.

3.10 EMC. EMC control shall be in accordance with MIL-PRF-28800F Table 6 (or equivalent) when tested in accordance with MIL-PRF-28800F paragraph 4.5.6.5 EMC test.

3.11 Performance requirements. All performance requirements shall be met during a one year period over the temperature range of 18 to 28 degrees C.

3.11.1 DC Voltage. The calibrator shall be able to output voltage from 0 to 1000 V within the requirements of 3.11.1.1 to 3.11.1.2

3.11.1.1 Accuracy. The calibrator shall provide as a minimum the uncertainty, resolution, and current burden as indicated for each voltage range. The actual ranges of the calibrator can differ but the resulting uncertainty needs to meet the requirements set forth as follows (iv = indicated value):

3.11.1.2 Short term stability. The calibrator dc voltage output shall have a 10 minute stability of at least 1.0 uV on the 100 mV range, 10.0 uV on the 1 V range, and 100 uV on the 10 V range.

3.11.2 AC Voltage. The calibrator shall be able to output voltage from 0 to 1000 Vrms (sine wave) within the requirements of 3.11.2.1 to 3.11.2.2.

3.11.2.1 Accuracy. The calibrator shall provide as a minimum the uncertainty and resolution as indicated for each voltage and frequency range. The actual ranges of the calibrator can differ but the resulting uncertainty needs to meet the requirements set forth as follows:

3.11.2.2 Current burden and distortion. The calibrator shall provide as a minimum the current burden as indicated for each voltage and frequency range and the maximum distortion.

3.11.3 DC Current. The calibrator shall be able to output dc current from 100 uA to 20 A within the requirements of 3.11.3.1.

3.11.3.1 Accuracy. The calibrator shall provide as a minimum the uncertainty, resolution, and voltage compliance as indicated for each voltage range. The actual ranges of the calibrator can differ but the resulting uncertainty needs to meet the requirements set forth as follows:

1 A

*For currents greater than 10.5 A the calibrator can have a duty cycle where it is off for so many minutes per hour however it must be able to provide 20 A at 23°C for at least 15 minutes out of every hour. Currents below this amount need to be available continuously.

3.11.4 AC Current. The calibrator shall be able to output dc current from 100 uA to 20 A within the requirements of 3.11.4.1 to 3.11.4.2

3.11.4.1 Accuracy. The calibrator shall provide as a minimum the uncertainty and resolution as indicated for each voltage and frequency range. The actual ranges of the calibrator can differ but the resulting uncertainty needs to meet the requirements set forth as follows:

* For currents greater than 10.5 A the calibrator can have a duty cycle where it is off for so many minutes per hour however it must be able to provide 20 A at 23°C for at least 15 minutes out of every hour. Currents below this amount need to be available continuously..

3.11.4.2 Inductive load. The calibrator shall be able to source current through 6 coil and 50 coil wire on the 20 A range.

3.11.5 Frequency. The calibrator shall be able to output frequency as specified in 3.11.5.1 to 3.11.5.2.

3.11.5.1 56 to 64 Hz. The calibrator shall source frequency at 30,100, and 115 V over the range of 56 to 64 Hz with an accuracy of ±0.075% in increments of 1 Hz.

3.11.5.2 350 to 450 Hz. The calibrator shall source frequency at 30,100, and 115 V over the range of 350 to 450 Hz with an accuracy of ±0.06% in increments of 1 Hz.

3.11.6 DC Power. The calibrator shall be able to output DC voltage and DC current simultaneously to simulate DC power. The calibrator shall be able to output DC power as specified in 3.11.6.1.

3.11.6.1 Accuracy. The calibrator shall output DC voltage and current with the combined accuracy as shown in the table below.

Current Range

3.11.7 AC Power. The calibrator shall be able to output AC voltage and AC current simultaneously to simulate AC power. The calibrator shall be able to output AC power as specified in 3.11.7.1 to 3.11.7.2

3.11.7.1 Accuracy. The calibrator shall output AC voltage and current with the combined accuracy as shown in the table below.

Current Range (55 to 65 Hz and 395 to 405 Hz)

3.11.7.2 Phase (Power Factor). The calibrator shall provide a Phase (Power Factor, 400 Hz, 100 V, 5A) over the range of 11 to -60 degrees with a tolerance of ±0.325 degrees. The frequency of operation for this shall be 400 Hz at 100 Vrms and 5 A. Other frequencies, voltage, and current levels can be provided.

3.11.8 Reverse voltage protection. The calibrator shall be able to withstand, without damage, a voltage of greater than 240 Vacrms put to its output terminals. This protection shall be available no matter what mode the calibrator is in.

3.12 Maintainability. Maintainability shall be as specified below in 3.12.1 Fault isolation through 3.12.4 Firmware updates.

3.12.1 Fault isolation. The design of the calibrator shall permit isolation of faults, and repair down to the component item or lowest replaceable unit with the maintenance provisions furnished. Refer to MIL-PRF-28800F paragraph 6.5.2.18 Nonrepairable subassembly for a definition of a nonrepairable subassembly.

3.12.2 Preventive maintenance. Preventive maintenance shall not require more than 15 minutes per a 30-day period. Preventive maintenance shall not require breaking of the calibrator seams where calibration seals would normally be placed.

3.12.3 Maintenance provisions. Equipment shall be as specified in a through d to facilitate maintenance:

Accessibility for maintenance. The calibrator shall be designed to ensure that any necessary maintenance access can be accomplished utilizing ordinary tools. The calibrator shall be constructed so that no damage to any component shall occur and no permanent distortion to any structural member shall be caused during maintenance and calibration (performance verification and adjustment/alignment).

Maintenance and calibration aids. If required, circuit board extenders, special adapters, special tools, and patch or interface cables required for maintenance or calibration shall be provided. They shall be identified as a set with a unique part number. Stowage shall be in a reusable pouch or container.

Accessibility for repair. The calibrator shall be designed so that Shop Repairable Assemblies (SRAs) can be removed without removing other hardwired subassemblies or components. There shall be no need to unsolder cables or interconnecting wiring to remove SRAs. Assemblies designed primarily to distribute power and signals to other components are excluded from this requirement. When troubleshooting/repair information is provided and access to both sides of SRAs is necessary, the design of the calibrator shall facilitate this directly or through extender cards.

Adjustment/Alignment. The calibrator shall be provided with any necessary instructions/software (to include programming commands, if not explicitly company proprietary and non-releasable to the Navy or any other commercial customer) needed to adjust/align the calibrator so that the calibrator meets its performance specifications after repair or due to the calibrator failing performance verification.

1. Accessibility for adjustment. The calibrator design shall permit adjustments of components that are changeable without removing any component, printed circuit cards, or subassembly. The use of extender cards is permitted. (Example: Access will be provided to potentiometers that control the accuracy of specified parameters.)

2. Alignment instructions/software. If the calibrator has alignment data stored in memory (example: EEPROM, data files, DACs, etc.) that is necessary for the calibrator to meet its performance specification and modification of this alignment data is necessary after repair or a calibration failure, the calibrator shall be designed and information provided so that the alignment can be performed by the Navy. The alignment process shall be able to use existing Navy calibration standards that meet all necessary minimum performance requirements to satisfy a traceable calibration.

This alignment information provided shall include any necessary software (preferably software commands) usable via any allowable communications interface specified in this document, e.g. IEEE-488 data bus, and usage instructions required to perform an alignment (to include any necessary setup instructions/software commands to put the calibrator into the alignment mode, instructions/software commands necessary to gather new alignment data, along with any software algorithms required to format the alignment data into the appropriate data required by the calibrator, and any instructions/software commands necessary to reprogram the calibrator with the new alignment data).

If software is required for the alignment process, preference will be given to software that uses current Navy calibration standards without modification (or the modification must be able to be performed by the Navy). Alternatively, if the software will not use Navy calibration standards without modification and modification by the Navy is not possible, preference will be given if the manufacturer supplies the explicit instructions/software commands and any necessary algorithms for the Navy to develop its own organic alignment support using existing Navy calibration standards.

3.12.4 Firmware updates. The calibrator shall be designed to allow for the Navy to update the calibrator firmware. For the length of the contract and any subsequent warranty period beyond the length of the contract, the manufacturer shall provide to the Navy notification of any firmware updates, instructions on how to perform the update, and free access via appropriate media transfer method supported by the Navy (e.g. ROM disc, Website, email) to firmware updates that fix bugs relating to any of the performance requirements cited in this specification. For the same time period, the manufacturer shall provide to the Navy notification of any improvements relating to any performance requirements cited in this specification. The firmware update process shall use any common interface path supported by the CNCS (e.g. the USB DVD-ROM drive available with the device).

3.13 Calibration. The calibrator shall meet the calibration requirements as specified below in 3.13.1 Calibration certificate through 3.13.3 Calibration procedure. For the purpose of this CSS, calibration refers to the process of comparing a test instrument with a calibration standard to determine the indicated error at specified test points. Alignment refers to the process of characterizing and adjusting a test instrument to cause it to indicate within its specified accuracy limits.

3.13.1 Calibration certificate. The calibrator provided under this CSS shall have a current calibration certificate, with a calibration data sheet, traceable to the National Institute of Standards and Technology (NIST).

3.13.2 Calibration interval. The minimum interval between calibrations shall be 12 months. At the end of this interval, a minimum of 85 percent of the units shall remain in tolerance.

3.13.3 Calibration procedure. A calibration procedure in accordance with MIL-PRF-38793 shall be provided.

3.14 Reliability. The design of the calibrator shall be such that under normal use and operation the calibrator does not fail within 1500 hours of operation with a statistical certainty of 95%. In addition, the calibrator must maintain an 85% in tolerance condition for a period of one year. The manufacturer shall provide a summary of maintenance or warranty records to establish the validity of the statistical assertions. If records of the actual calibrator model offered are not available, records from a similar model may be substituted. The manufacturer shall be able to reasonably establish the claim that the offered equipment shall provide reliability similar to the model used to provide substitute records.

3.14.1 Warranty label. The calibrator shall have a warranty label that reflects the start and end dates of the warranty. Warranty shall be a minimum of 1 year.

3.15 Technical manuals. Two copies of an operation and maintenance manual shall be provided with each unit.