21-2 - US AFPSL Calibration Procedure TOs - 8 March 2016 - Bidder's Library.pdf

BY ORDER OF THE CHIEF Operating Instruction 21-2 AIR FORCE METROLOGY AND CALIBRATION DIVISION 8 March 2016

AFPEO AGILE COMBAT SUPPORT (AFLCMC/WNM)

Heath OH 43056-1199

Maintenance

US AIR FORCE PRIMARY STANDARDS LABORATORY

CALIBRATION PROCEDURE TECHNICAL ORDERS

COMPLIANCE WITH THIS PUBLICATION IS MANDATORY

ACCESSIBILITY: This publication is available digitally on MyAFMETCAL at tab MLTools under AFMETCAL OIs.

RELEASABILITY: Access to this publication is restricted to AFMETCAL personnel. Further dissemination must be approved by the Division Chief, Air Force Metrology and Calibration.

OPR: WNMRH Certified by: WNMR (Mya B. Kluisza)

Pages 21 Supersedes OI 21-2, 1 December 2014

This operating instruction establishes policy and guidelines for the preparation, revision, and distribution of 33K7-4-XXX-1 and 33KX-5-XXX-1 series Technical Orders (TOs) used by the Air Force Primary Standards Laboratory (AFPSL) to calibrate Air Force reference standards, base reference standards, and test, measurement, and diagnostic equipment (TMDE) designated as AFPSL responsibility in TO 33K-1-100-1, TO 33K-1-100-2, or Calibration and Measurement Summary (CMS) TO. This instruction is applicable to all personnel involved in the preparation of new and revisions to existing TOs, including the AFPSL contractor. All records created as a result of processes prescribed in this publication are to be maintained in accordance with AFMAN 33-363, Management of Records, and disposed of in accordance with the Air Force Records Disposition Schedule (RDS) located at https://www.my.af.mil/gcss-af61a/afrims/afrims/rds/rds_series.cfm. Refer recommended changes and questions about this publication to the Office of Primary Responsibility (OPR).

SUMMARY OF CHANGES

2.2.4.1. Last sentence deleted. No longer perform change actions on TOs. Now completely digital through ETIMS. (Page 7)

“AFPD 63-1/AFPD 20” Changed “AFPD 20” to “AFPD 20-1” (Page 8)

Changed title from “Acquisition and Sustainment Life Cycle Management” to “Integrated Life Cycle Management” (Page 8)

OI 21-2, 8 March 2016

Changed “AFI 63-101” to “AFI 63-101/20-101” (Page 8)

Changed “AFMC Form 252” to “AFTO Form 252” (Pages 6, 7 & 8)

1. POLICY.

1.1. The TOs shall be prepared in accordance with the format established in MIL-STD- 38784A and the attached calibration procedure preparation instructions.

1.2. Each TO shall be assigned a number in the category 33K numbering series as follows:

Series Measurement Area 33K1 Voltage, Current, Power, and Phase 33K2 Impedance 33K3 Frequency 33K4 Microwave, Fiber Optics, Radiance, Infrared, Illuminance, Photometrics, and Laser 33K5 Temperature 33K6 Mechanical and Physical

33K7 RADIAC

33K8 Electrical Measurement Console: Voltage, Current, Power, and Phase 33K9 Automated Test Stations 33K10 Multiple Parameter

1.3. The standards and TMDE calibrated by the TOs shall be listed in TO 33K-1-100-2 with the TO number.

1.4. The TOs shall be listed in the AF Technical Order system of record, and shall be identified as TOs not used at the organizational and intermediate levels of maintenance.

2. RESPONSIBILITIES.

2.1. Development of a new TO:

2.1.1. The WNMMN, WNMEM, and WNMEE Sections shall:

2.1.1.1. Verify that a TO does not already exist.

2.1.1.2. Determine whether the item to be calibrated is not listed in TO 33K-1-100-2; input the data into the live K100 database.

2.1.1.3. Determine whether the TI characteristics and performance specifications should be documented within the procedure or displayed in the Air Force Calibration Authority Viewer (AFCAV). If AFCAV is chosen, ensure all applicable TI characteristics and performance specifications are loaded in MudCats and identified as Table 1 specifications.

2.1.1.4. Obtain the 33K-series TO number from the live K100 database.

2.1.1.5. Prepare a TO requirement package. The requirement package shall contain commercial data if not scanned into the live K100 database, a New TO Package Checklist and, if available, the AFTO IMT 45, Request for Calibration Responsibility Determination. If the item to be calibrated is already listed in TO 33K-1-100-2, an AFTO IMT 45 is not necessary. Place a copy of the requirement package in the engineering history file.

2.1.1.6. Decide whether the TO is to be written by WNMMN, WNMEE, WNMEM or the Air Force Primary Standards Laboratory (AFPSL) contractor.

2.1.1.6.1. Determine whether the TO is to be written by the

AFPSL contractor, WNMEE, WNMMN, or WNMEM shall submit the requirement package to the contractor through WNMRH.

Include any special instructions if the TO is to deviate from the commercial data.

2.1.1.6.2. Determine whether the TO is to be written by

WNMMN, WNMEM or WNMEE, prepare the TO in accordance with the attached Calibration Procedure Preparation Instructions.

Note on a cover sheet the author's name and the lab name where the TO is most likely to be used. If the TO complies with MIL STD 38784A, annotate "camera ready" on the cover sheet; if not, annotate “preliminary TO” on the cover sheet. For preliminary TOs, refer to MIL STD 38784A for requirements on verified or unverified procedures. Place a coordination stamp on the front page of the TO.

After the coordination of the author and Section Chief, forward two copies of the TO, disk containing the TO, and the requirement package to WNMRH. The TO may be submitted to WNMRH electronically. For preliminary TOs, submit an e-mail to WNMRH requesting the use of the preliminary TO by the AFPSL. Place a copy of the TO in the engineering history file.

2.1.1.7. Review and approve the camera-ready TO by completing the technical content manager (TCM) TO Review Cover Sheet. Initiate an AFTO Form 158, Technical Order Review Comment Sheet, IMT version, if applicable.

2.1.2. The Calibration & TO Management Section (WNMRH) shall:

2.1.2.1. Enter the appropriate information into the AFMETCAL TO tracking database.

2.1.2.1.1. Determine whether the TO requirement package is a

preliminary TO, the e-mail requesting use of the preliminary TO along with the preliminary TO will be forwarded for lead command concurrence. When lead command concurrence is received, forward the original TO and associated documents to the contractor Technical Order Distribution Office (TODO). Also, send a copy of the TO with the requirement package to the contractor TO writing department. The TO is now approved for use by the calibrating technician. When the TO is received from the contractor TO writing department, initiate a TCM TO Review Cover Sheet. Forward the TCM TO Review Cover Sheet, TO and requirement package to the TCM. When the TCM TO Review Cover Sheet is received indicating the TO has no deficiencies, forward the TO and the requirement package to the contractor TODO.

2.1.2.1.2. Determine whether the TO requirement package

indicates the contractor will write the TO or includes a draft TO not marked as a preliminary TO, forward the TO with the requirement package to the contractor TO writing department. When the TO is received from the contractor TO writing department, initiate a TCM TO Review Cover Sheet. Forward the TCM TO Review Cover Sheet, TO and requirement package to the TCM. When the TCM TO Review Cover Sheet is received indicating the TO has no deficiencies, forward the TO and the requirement package to the contractor TODO.

2.1.2.1.3. Determine whether the TO from WNMMN, WNMEE, or WNMEM is marked camera ready, verify it is camera ready and forward it with the requirement package to the contractor TODO.

2.1.2.2. File the completed TO electronically in the designated network file directory for AFPSL TOs.

2.1.3. The contractor’s TODO shall ensure:

2.1.3.1. If the TO is a preliminary TO, make the required number of copies and distribute to the sub-account monitors. File a copy in the live history file.

2.1.3.2. If the TO is camera ready, make the required number of copies and distribute them to the sub-account monitors. File a copy in the live history file.

2.1.3.3. When the New TO Package Checklists are received from the contractor TO writing department, place them in the live history file.

2.1.4. The contractor TO writing department shall ensure:

2.1.4.1. If WNMMN, WNMEE, or WNMEM decides the contractor shall write the TO, the contractor shall write a camera ready TO in accordance with MIL-STD-38784A and the attached calibration procedure preparation instructions. Forward the TO and the TO requirement package to WNMMN, WNMEE, or WNMEM through WNMRH for review and approval.

2.1.4.2. If the TO is a preliminary TO, correct the TO to be camera ready in accordance with MIL-STD-38784A and the attached calibration procedure preparation instructions. Forward the TO with the requirement package to WNME through WNMRH for approval.

2.1.4.3. All TOs delivered to the contractor TO writing department, those written by the contractor or delivered as preliminary or camera ready, shall be indexed in the current AF Technical Order system of record.

2.1.4.4. The technical writer shall add the equipment from the Equipment Requirements Section of the TO and any referenced procedure numbers to the equipment requirements database, commonly referred to as the Table 2 database.

2.2. TO revisions:

2.2.1. The WNMMN, WNMEE, or WNMEM Section shall:

2.2.1.1. Initiate revision of the existing TO by completing an AFTO Form 252 in accordance with AFMCMAN 21-1, Air Force Material Command Technical Order System Procedures.

2.2.1.2. Ensure the TCM annotates in the appropriate block on the AFTO Form 252 "request early implementation" if required. The TCM shall submit the AFTO Form 252 and, if applicable, AFTO 22, Technical Manual (TM) Change Recommendation and Reply, to the appropriate WNMMN, WNMEE, or WNMEM Section Chief for approval.

2.2.1.3. Ensure the appropriate WNMMN, WNMEE, or WNMEM Section Chief approves the AFTO Form 252 and, if applicable, AFTO 22 and submit to the WNMRH Section.

2.2.2. The WNMRH Section shall ensure:

2.2.2.1. If early implementation is requested, stamp the original and a copy of the AFTO Form 252 as being approved for early implementation.

2.2.2.2. If early implementation is requested, forward the original AFTO Form 252 to the contractor TODO. A copy of the AFTO Form 252 will be forwarded to the contractor TO writing department.

2.2.2.3. If early implementation is not requested, forward the original AFTO Form 252 to the contractor TO writing department.

2.2.2.4. When the TO is received from the contractor TO writing department, initiate a TCM TO Review Cover Sheet. Forward the TO package to the

TCM.

2.2.2.5. The TCM shall complete the TCM TO Review Cover Sheet and initiate an AFTO Form 158, IMT version, if applicable.

2.2.3. The contractor TODO shall ensure:

2.2.3.1. If the AFTO Form 252 is an early implementation, validate the dates on the AFTO Form 252 and the affected TO. Enter the appropriate information in the contractor’s TO tracking system. Make the required number of copies and distribute them to the sub-account monitors. File a copy of the approved for early implementation AFTO Form 252 in the live history file.

2.2.3.2. If the TO is camera ready, enter the appropriate information in the contractor’s TO tracking system. Make the required number of copies of the revised pages and distribute them to the sub-account monitors. File a copy in the live history file. If there is an early implementation TO in the live history file, remove it.

2.2.4. The contractor TO writing department shall:

2.2.4.1. Revise the affected TO in accordance with the AFTO Form 252, the attached calibration procedure instructions, MIL-STD-38784A, and the AFMETCAL TO Guide and Requirements.

2.2.4.2. Forward the TO to WNMMN, WNMEE, or WNMEM through

WNMRH for approval.

2.2.4.3. Ensure technical writers update the equipment requirements database, commonly referred to as the Table 2 database, with the equipment from the Equipment Requirements Section and any referenced procedure numbers from the TO.

//SIGNED//

PAUL D. KUBE

Chief, AF Metrology and Calibration Division AFPEO Agile Combat Support

Attachment 1

APPLICABLE PUBLICATIONS AND FORMS

TO 00-5-1, AF Technical Order System

TO 00-5-18, USAF Technical Order Numbering System

TO 00-20-14, Air Force Metrology and Calibration Program

TO 33K-1-100-1, Maintenance Data Collection Codes, and Calibration Measurement Summaries

TO 33K-1-100-2, TMDE Calibration Notes, Calibration Interval, Technical Order and Work Unit Code Reference Guide

AFPD 63-1/AFPD 20-1, Integrated Life Cycle Management

AFI 63-101/20-101, Integrated Life Cycle Management

AFMCI 21-301, Air Force Materiel Command Technical Order System Implementing Policies

AFMC Manual 21-1, Air Force Materiel Command Technical Order System Procedures

MIL-STD-38784A, Department of Defense Standard Practice for Technical Manuals: General Style and Format

MIL-PRF-38793C, Technical Manuals: Calibration Procedures Preparation

AFTO 22, Technical Manual (TM) Change Recommendation and Reply

AFTO IMT 45, Request for Calibration Responsibility Determination

AFTO Form 158, Technical Order Review Comment Sheet

AFTO Form 252, Technical Order Publication Change Request

New TO Package Checklist

NIST Tech Note 1297, Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results

ANSI/NCSL Z540-2-1997, U.S. Guide to the Expression of Uncertainty in Measurement

AFMETCAL TO Guide and Requirements

Attachment 2

CALIBRATION PROCEDURE PREPARATION INSTRUCTIONS

A2.1. General Requirements. A calibration procedure should be provided for each test instrument (TI); however, similar TIs may be covered in the same procedure. Similar TIs are considered those having similar parameters, controls, displays and performance limits to the degree which allows combination of calibration instructions without undue complications.

A2.2. Numbering of paragraphs and procedural steps. A decimal system similar to that used in the 33KX-4 (field) calibration procedures shall be used throughout the calibration procedure.

A2.3. Text Content. The calibration procedure shall contain the essential information required for performing calibration of one or more TIs. Each procedure shall contain instructions sufficient in detail to enable calibration personnel to determine whether the TI is operating within the prescribed performance limits. Another procedure may be referenced provided that the entire or a large portion of the referenced procedure is used by the prime procedure.

A2.3.1. Referenced Procedures. If a procedure is referenced from Section 4 of the prime procedure, then the following shall apply:

A2.3.1.1. The prime procedure shall not list equipment used exclusively in the referenced procedure.

A2.3.1.2. Section 4 of the prime procedure shall state each TI characteristic calibrated by a referenced procedure and identify the referenced procedure number.

Example: Measure the relative spectral responsivity of the TI using TO 33K4-5-3-1.

A2.3.1.3. Section 4 of the prime procedure shall state the minimum performance specifications required to calibrate each TI characteristic calibrated by a referenced procedure.

Example: The relative spectral responsivity must be measured from 350 to 1000 nm with an uncertainty of 2.0%.

A2.3.1.4. Section 4 of the prime procedure shall require the referenced procedure performance specifications be verified.

Example: Verify TO 33K4-5-3-1 still meets the requirements.

A2.3.1.5. If necessary, the prime procedure shall contain any special instructions needed when using the referenced procedure.

A2.3.1.6. The prime procedure shall list all referenced procedures in Section 2 (see Figure A2.2.).

A2.3.2. Software used in the calibration shall be called out by one of two methods: The first method is to reference validated/verified software controlled and documented in compliance with TO 00-20-14. As required, the procedure shall require in Section 3 or 4 the software be the latest revision of the applicable version per ACPINS. The second method is to use an automated calibration TO that contains a “-10” suffix; i.e., 33Kx-x-x-

10. The procedure will require in Section 3 or 4 the software is the latest revision of the applicable version per the TO Index publication date. All software used in the calibration shall be properly listed in Section 2. See the AFMETCAL TO Guide and Requirements for detailed information.

A2.4. Interconnection Instructions. The procedure shall specify the type, length, and dress of leads, grounding and relative equipment placement whenever such factors must be controlled to assure the success of calibration. Interconnection information shall be described in words or shown in a simple line drawing, block diagram, or combination thereof, as required, for clarity (see Figure A2.3.). The interconnection instruction shall be contained in Section 3 or 4.

A2.5. Development of Text. IAW the requirements of MIL-STD-38784A, procedures shall be written in simple practical language. All terminology, symbols and abbreviations shall be readily understandable by calibration technicians. New or unusual terms, symbols or abbreviations should either be avoided altogether or explained at the first usage in each procedure. Action verbs should be used. Short sentences and steps enable the operator to remember the entire operation. Instructions shall use the imperative mode, direct sentences; e.g., "Turn on the TI."

A2.6. Types of Instructions to be Excluded. Calibration procedures shall not cover maintenance instructions; for example: complete disassembly and assembly instructions of any instrument, subassembly, accessory or plug-in unit; or replacement instructions for work accomplished by maintenance activities. Minor adjustment of calibrated parameters is permitted.

A2.7. Security Classification. Inclusion of classified matter in the calibration procedures shall be held to a minimum. When classified information is included, identify it in accordance with

MIL-STD-38784A.

A2.8. Detailed Requirements. The calibration procedure shall be arranged as follows:

A2.8.1. Front Page. Each TI shall be identified by manufacturer, model number, nomenclature, and principle function, if not evident from the nomenclature. General procedures which include many TIs need only identify nomenclature. Identification shall include, for example:

A2.8.1.1. Set and component (ANURM25E) and (SG11).

A2.8.1.2. Military item and commercial counterpart (ANUSM105A) and (Hewlett-Packard 160b).

A2.8.1.3. Model variations (ME25, A and C).

A2.8.1.4. Any other identification specified by the procuring activity, such as manufacturer part number.

A2.8.2. Section 1 - Calibration Description. The Calibration Description Section shall contain the following information:

A2.8.2.1. The TI characteristics, performance specifications and test methods pertinent to the calibration shall be presented in tabular form (see Figure A2.1.).

The test method shall clearly indicate how each TI performance specification is verified and refer to alternate methods if utilized in the procedure. Variations in TI characteristics or performance between models shall be identified. All calibrated TI characteristics shall have an uncertainty assigned.

A2.8.2.2. TI performance specifications shall be consistent with the TI manufacturer specifications whenever possible. If they are not, the calibration procedure shall identify any deviations from manufacturer’s specifications.

A2.8.2.3. Accessories: All peculiar accessories requiring calibration with the TI shall be identified and described.

A2.8.2.4. When TI information is too complicated to be listed in Section 1; it may be listed in an Appendix.

A2.8.2.5. Determine whether the TI characteristics and performance specifications should be documented with the procedure or displayed in the Air Force Calibration Authority Viewer (AFCAV). If AFCAV is chosen, ensure all applicable TI characteristics and performance specifications are loaded in MudCats and identified as Table 1 specifications. Also, include the following statement in the section of the procedure: “See TO 33K-1-100-2 for all TI characteristics and performance specifications.” If the procedure uses an appendix to list specifications for a variety of part numbers and not all part numbers are loaded in MudCats, include the following statement: “If the part number is not listed in the appendix, see TO 33K-1-100-2 for TI characteristics and performance specifications.”

A2.8.3. Section 2 - Equipment Requirements. This section shall list the calibration equipment, peculiar accessories and mission critical software required in the calibration process in a calibration equipment table (See Figure A2.2.). The table shall include the generic name, minimum use specifications and recommended equipment.

A2.8.3.1. The first column shall contain a reference item number and the generic or common name for the equipment.

A2.8.3.2. The second column shall contain the minimum use specifications, which are defined as the characteristics, uncertainty, range, input impedance if applicable, and any other pertinent factors which are required during the performance of the tests and measurements described in the procedure. This information is intended to assist in selecting suitable substitute equipment in the event equipment listed in the third column is not available. Listing the manufacturer specifications in this column rather than the minimum use specifications may increase calibration cost when calibration equipment is substituted.

A2.8.3.3. The third column should contain an example of equipment, with manufacturer name and part number, which will meet or exceed the second column minimum use specifications and which are adequate for the performance of the calibration procedure.

A2.8.3.4. The fourth column may contain the manufacturer name and part number for substitute equipment which will meet or exceed the second column minimum use specifications and which are adequate for the performance of the calibration procedure.

A2.8.3.5. Mission critical software shall be listed in the calibration equipment table with software control number and any other pertinent information.

A2.8.3.6. Subsequent identification of the calibration equipment shall be general so as to facilitate equipment substitution. The calibration equipment shall be identified by generic terms; e.g., Signal Generator, Direct Voltage Source, Power Meter, etc., as long as no confusion exists. Item numbers, where needed for understanding, shall be used throughout the text.

A2.8.4. Section 3 - Preliminary Operations. This section shall include TI, accessory, and calibration equipment connections, warm up instructions, setup instructions or other operations preliminary to the complete calibration process.

A2.8.4.1. Familiarization. Instructions for the technician to become familiar with the procedure before beginning calibration shall be included.

A2.8.4.2. Special Environmental Conditions. Environmental conditions affecting the uncertainty or validity of measurements shall be described and may include an explanation of the reasons for the requirement.

A2.8.4.3. If applicable, the procedure shall include the following warning:

WARNING

Unless otherwise designated, and prior to beginning the calibration process, ensure that all test equipment voltage and/or current outputs are set to zero (0) or turned off, where applicable. Ensure all equipment switches are set to the proper position before making connections or applying power.

A2.8.5. Section 4 - Calibration Process. This section shall describe the details (text, figures, illustrations and tables) essential to the calibration of the TI and peculiar accessories.

A2.8.5.1. Division of the Calibration Process. The calibration process shall be divided into well-identified divisions covering each general calibration area.

Each division shall be arranged in a logical sequence keeping changes in connections, equipment setups, and control positions to a minimum. The necessary equipment connections, control settings and operations which comprise the calibration process shall be described.

A2.8.5.2. Procedure Methods. The procedure shall utilize overall performance testing, if possible. Calibration methods by measurement of the TI output or end product shall be employed. For example, power supplies of items such as signal generators, oscilloscopes and electronic voltmeters are tested indirectly by monitoring the output frequency or amplitude, or both.

A2.8.5.3. Development of Calibration Procedure. In development of calibration procedures, the following shall apply:

A2.8.5.3.1. Characteristics with performance specifications which can be reasonably expected to change with time, use or handling shall be included.

A2.8.5.3.2. Characteristics with performance specifications whose values are fixed and not subject to change with time, use or handling shall not be included.

A2.8.5.3.3. Functional tests shall be omitted when a related discrepancy or malfunction would be revealed during normal operation of the TI.

A2.8.5.4. Control Settings. Control settings of the calibration equipment and TI shall be given as necessary to assure complete understanding of the instructions. Series of control settings shall be represented in tabular form when required for clarity. The procedure does not need to have detailed instructions already contained in the calibration equipment and TI manuals.

A2.8.5.5. Adjustment Instructions. Adjustment instructions may be included if they satisfy the following criteria:

A2.8.5.5.1. Adjustments are not made prior to making measurements.

A2.8.5.5.2. The adjustment instructions apply to all TI serial numbers covered by the calibration procedure.

A2.8.5.5.3. Reasonable assurance exists that the out-of-tolerance condition can be corrected by the adjustment without need for other maintenance or repair action.

A2.8.5.5.4. The adjustment instruction can be included without unduly increasing the length and complexity of the procedure.

A2.8.5.5.5. Interaction with other tests or adjustments is adequately covered.

A2.8.5.5.6. The adjustment instruction is compatible with the calibration equipment setup being used and test sequence being followed.

A2.8.5.5.7. The adjustment is readily accessible.

A2.8.5.5.8. The procedure instructs the user to repeat the calibration process for all of the TI ranges the adjustment affects.

A2.8.5.5.9 The procedure states that adjustments shall not be allowed during an audit.

A2.8.5.6. Verification and Correction Action. The following note shall be placed at the beginning of Section 4:

NOTE

Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met, before proceeding.

In those cases where interaction of individual measurements will be affected by corrective action, the following instruction shall be added: “Do not take corrective action until step __ has been performed.”

A2.8.5.7. Calibration Curves and Charts. Instructions for preparation of calibration curves, charts and tables shall be included, when required, for the use of the TI.

A2.8.5.8. Performance Limits. Performance limits shall be included in the text wherever instructions for tests or measurements appear, and shall conform to the following:

A2.8.5.8.1. Performance limits should be expressed in the same units as nominal values whenever feasible. Performance limits, when extended by the measurement uncertainty, shall not exceed the uncertainties in Section 1.

A2.8.5.8.2. Performance limits shall be expressed as single minimum or maximum values; for example, 2 centimeters minimum (2 cm min) when required by the TI specification.

A2.8.5.8.3. Nominal values and performance limits shall be expressed in the same units as the expected test data, whenever possible. Nominal values shall be omitted for quantities such as distortion, noise, ripple, etc., and quantities which are ideally zero.

The processing of data or their computations, when required, shall be simplified as much as possible.

A2.8.5.9. Labeling. If the procedure deviates from the manufacturer performance specifications, the procedure shall instruct the user to complete and affix a limited certification label to the TI.

A2.8.5.10. Calibration Performance Table (CPT). When there are six or more different performance limits not summarized elsewhere in the calibration procedure, a CPT is required. If a CPT is not used, the procedure shall state:

"calibration performance table not required." Calibration performance tables shall conform to the following:

A2.8.5.10.1. The CPT shall be located at the end of the calibration process (Section 4). It shall contain all of the TI characteristics listed in Section 1, the procedure step number, the TI range, the values applied to the TI and the performance limits. The performance limits shall be expressed in the same units as the TI characteristic listed in Section 1 (see Figure A2.4.).

A2.8.5.10.2. A separate CPT should be provided for each TI covered by the calibration procedure. If two or more TIs have identical characteristics, or have minor differences which can be readily and unambiguously handled on one CPT, one CPT may be used. All applicable TIs shall be identified in the CPT heading.

General procedures which include many TIs need not identify each TI in the CPT heading.

A2.8.6. Appendices. Appendices may be used to list the technical specifications of the TI(s) when they are too complicated to be listed in Section 1. Appendices may also be used to present supplementary or reference material; such as, extracts from technical articles or bulletins, dimensional tolerances, special handling or cleaning instructions, alternate test or calibration methods, or other essential information which has no logical location in the preceding instructions.

A2.8.6.1. Uncertainty Analysis. An uncertainty analysis is required for every AFPSL primary-level procedure and shall be located in an appendix.

Uncertainty analysis format is not required to be in format of MIL-STD- 38784A. Primary level procedures are procedures used in the AFPSL to calibrate Base Reference Standards for Precision Measurement Equipment Laboratories (PMELs). The following are minimum requirements for uncertainty analysis:

A2.8.6.2. Each source of uncertainty shall be documented.

A2.8.6.3. The propagation of uncertainty shall be fully documented and show the effect of each component on the total uncertainty.

A2.8.6.4. The analysis shall have a clear, consistent method for the combination of uncertainty.

A2.8.6.5. If the total uncertainty is valid only for certain ranges, then those shall be stated.

A2.8.6.6. The measurement uncertainty statement should include a consideration of interpolated points.

A2.8.6.7. The uncertainty analysis shall be performed IAW one of the following guidelines:

A2.8.6.7.1 ANSI/NCSL Z540-2-1997, “U.S. Guide to the Expression of Uncertainty in Measurement.”

A2.8.6.7.2 NIST Technical Note 1297, “Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results.”

A2.9. Definitions.

A2.9.1. Calibration Equipment. Equipment other than the TI required to perform the calibration.

A2.9.2. Functional Check (Test). A check intended to verify correct functioning of a TI or some feature of a TI, which is independent of the uncertainty of the TI. The requirement is usually a condition to be met rather than comparison with numerical tolerance limit values. Examples of functional checks are oscilloscope position control range and centering; multimeter battery check; and oscilloscope sweep time vernier range check.

A2.9.3. Minimum Use Specifications. Minimum use specifications are the principal parameters required for performance of the calibration, and are included to assist in the selection of alternate equipment, which may be used at the discretion of the using laboratory. Satisfactory performance of alternate items shall be verified prior to use. All applicable equipment must bear evidence of current calibration.

A2.9.4. Peculiar Accessories. Items furnished with a TI and used only with that TI, but not physically part of it. For example, a high voltage plug-in probe used specifically to extend the range of a particular voltmeter.

A2.9.5. Shall. The word "shall" is to be understood as mandatory.

A2.9.6. Should. The word "should" is to be understood as advisory.

A2.9.7. Test and Measurement Equipment. Devices used to measure or evaluate the characteristics of materiel or natural phenomena.

A2.9.8. Test Instrument (TI). The equipment to be calibrated.

1. CALIBRATION DESCRIPTION

Figure A2.1. Typical Calibration Description

Test Instrument (TI) Performance Test Characteristics Specifications Method

Current Range: 0 to 1 mA Comparison to Standard (manufacturer specifies 0 to 10 mA) Current Source

Uncertainty: ±(1% + 1 digit) (manufacturer specifies ±0.5%)

Radiometric Range: 10 pW to 10 mW Comparison to Standard Power Power Meter Uncertainty: ±5%, 400 to 1000 nm;

and ±10%, 1000 to 1100 nm (manufacturer specifies ±5% at 632.8 nm)

Luminance Range: 0 to 10+5 fL Comparison to Standard Luminance Source Uncertainty: ±5% FS

Illuminance Range: 0 to 10+4 fC Comparison to Standard Luminous Intensity Source Uncertainty: ±5% and Distance Measurement

2. EQUIPMENT REQUIREMENTS

Figure A2.2. Typical Equipment Requirements

Minimum Use Calibration Sub- Noun Specifications Equipment Item

2.1 DC POWER SUPPLY Range: 0 to 100 V dc, 0 to 10 A Kepco

Line Regulation: ±0.01% ATE 100-10M

Uncertainty: N/A

2.2 SILICON DETECTOR Range: 200 nm to 1100 nm, NIST

STANDARD +3 to -60 dBm Silicon Detector

Linearity: 0.2% Uncertainty: 0.7%, 250 to 440 nm;

0.22%, 440 to 900 nm;

0.3%, 900 to 1000 nm;

0.7%, 1000 to 1100 nm;

2.3 LOCK-IN AMPLIFIER Range: 1V to 500 mV PAR

Linearity: 0.5%

Uncertainty: N/A

2.4 COMPUTER Range: N/A MLLN-PROGRAM.BAS-000-00

PROGRAM

Uncertainty: N/A

2.5 CALIBRATION Range: +3 to -60 dBm Local

PROCEDURE FOR 800 to 900 nm, 1250 to TO 33K4-5-448-1 DETECTOR 1350 nm, 1500 to 1600 nm

LINEARITY

DIRECT

COMPARISON Uncertainty: ±2%, +3 to 0 dBm;

METHOD ±1%, 0 to -30 dBm;

±2%, -30 to -50 dBm

3. CALIBRATION PROCESS

NAVAIR 17-201CP-000

________________________TRIPLE SPACE

4.10.2. This step is typed here in order to illustrate the correct spacing between this step, the procedure number (above), and the figure (below).

Leave a triple space between the procedure number and the running text; quadruple space if a section heading starts the page.

ALLOW SPACE FOR FIGURE

PLUS ONE HALF INCH ABOVE

AND BELOW

Part number can be used on figures.

Figure 1. X Attenuator Compensation Test Configuration

TRIPLE SPACE

NOTES

1. If the pulse generator is being used, connect the 20 dB attenuator between the pulse output and the TI. Adjust the pulse generator controls for a repetition rate of approximately 400 pps, the pulse width control for a width of 5 ms, and adjust the delay and amplitude controls for a stable TI CRT display 10 cm in amplitude.

2. If the square-wave generator is being used, adjust the frequency control for approximately 20 kHz, and adjust the 75 ohm amplitude control for a TI CRT display 10 cm in amplitude

TRIPLE SPACE

4.10.3 Set the TI X VOLTS/CM switch to 5 (green switch).

Figure A2.3. Typical Interconnection Diagram

2.6

PULSE GEN

OR

SQ. WAV GEN

OSCILLOSCOPE

EXT TRIG

IN

TI

YA

INPUT

XA

INPUT

SAWTOOTH

OR

SWEEP OUT

PULSE GEN

TRIG OUTPUT

OR

SQ-WAVE GEN

600 OHM OUTPUT

PULSE GEN

PULSE OUTPUT

OR

SQ-WAVE GEN

75 OHM OUTPUT

2.9 20 dB ATTENUATOR

(USED ONLY WITH

PULSE GEN)

TERMINATING

RESISTOR

4. Calibration Performance Table

CALIBRATION PERFORMANCE TABLE

4.1 FREQUENCY DISPLAY CALIBRATION:

Frequency Range Frequency (kHz) Limits (Hz)

2 Hz - 2 kHz 0.020 18.9996 to 21.0004

1.000 998.98 to 1001.02

4.2 FREQUENCY RESPONSE CALIBRATION:

Applied Limits (dB)

20 Hz to 20 kHz -0.2 to +0.2

4.3 HARMONIC DISTORTION CALIBRATION:

Range Frequency (kHz) Limits (dBc)

2 Hz - 2 kHz 0.020 -76.5

1.000 -76.5

4.4 AMPLITUDE OUTPUT CALIBRATION:

Range (V rms) Limits (V rms)

10 9.8 to 10.2

6 5.84 to 6.16

4.5 SINUSOIDAL MODE OUTPUT ATTENUATOR CALIBRATION:

Range (dB) Limits (dB)

0 Reference

10 -10.10 to -9.90

Figure A2.4. Typical Calibration Performance Table