Synchro Resolver Standard CSS 2021_10-15-2021_.doc

CSS FY18-PAX-0002

CALIBRATION STANDARD SPECIFICATION PROCUREMENT PACKAGE

FOR A

SYNCHRO RESOLVER STANDARD

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

SEPTEMBER 2021

CALIBRATION STANDARDS SPECIFICATION PROCUREMENT PACKAGE

FOR A

SYNCHRO RESOLVER STANDARD

Prepared by:

Kevin O’Shea Project Engineer NAVAIR Metrology and Calibration

Product Support Team

In-Service Engineering, Team 2

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

CALIBRATION STANDARD SPECIFICATION FOR A

SYNCHRO RESOLVER STANDARD

1 SCOPE

1.1 Scope. This specification defines the minimal mechanical, electrical, and electronic characteristics and performance requirements for a Synchro Resolver Standard which is IEEE-488 GPIB compatible. This equipment is intended for use by Navy personnel in shipboard and shore-based laboratories and by other DOD personnel in secondary calibration laboratories, to calibrate the Navy’s Consolidated Automated Support System (CASS) Synchro Generator Measurement Assembly (SGMA). For the purpose of this specification, the Synchro Resolver Standard shall be referred to herein as the SRS.

1.2 Classification.

1.2.1 Class. The SRS shall conform to Class 4 requirements as specified in MIL-PRF-28800 for Navy shipboard and shore based laboratory use.

2 APPLICABLE DOCUMENTS

2.1 Controlling Specifications (General). The Military specification, MIL-PRF-28800, “General Specification for Test Equipment for Use with Electrical and Electronic Equipment,” and all documents referenced therein of the issues in effect on the date of this solicitation shall form a part of this requirement.

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

MILITARY SPECIFICATIONS AND STANDARDS

MIL-PRF-39012

Connectors, Coaxial, Radio Frequency, General Specification for

OTHER PUBLICATIONS

IEC 61326-1

Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements

IEC 61010-1

Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use

3 REQUIREMENTS

3.1 Electrical Power Sources and Connections. The SRS electrical power sources and connections shall be as specified in 3.1.1 through 3.1.4.

3.1.1 Electrical Power Sources. The SRS shall operate from a source of 103.5V to 126.5V at 50 Hz and 60 Hz (5% single-phase input power.

3.1.2 Power Consumption. The SRS maximum power for operation shall not exceed 300 W.

3.1.3 Lithium Batteries. Commercial UL approved equipment that contains lithium batteries (size double A 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 would require 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 button-type battery as described above is approved.

3.1.4 Electrical Power Connections. The SRS shall be provided with a 6 foot (1.8 m) minimum length detachable power cable, which can be connected or disconnected without disassembly or removal of adjacent components.

3.2 Front & Rear Panel Design. The SRS front and rear panels shall be designed so that the SRS can be situated on either panel (e.g. on a bench top or floor) without incurring any damage to terminals, connectors, buttons, keys, switches, knobs, and display indicators. This shall be achieved without the use of detachable shipping plates or covers. The synchro resolver connections must include 6 flush mount “safety” banana jacks (S1, S2, S3, S4, Reference positive and negative). The general appearance of the synchro/resolver may be similar to what is shown in the figure below.

3.3 Stacking Provisions. SRS enclosure shall have a geometric configuration that permits stacking without harm to the enclosure or its contents. Design shall permit the stacking of two SRSs minimum.

3.4 Maximum Dimensions. The maximum dimensions (excluding handles) of the SRS shall not exceed 18.5 inches (470 mm) in width, 14 inches (356 mm) in height, and 24 inches (610 mm) in depth. The system shall be able to be placed on a work area where depth of a workbench is 30 inches, 24 inches allows the unit to be placed on a bench facing a technician with at least 6 inches clearance behind for heat dissipation.

3.5 Weight. The maximum weight of the SRS shall not exceed 50 pounds (22.7 kg). The equipment shall be designed to preclude tipping during normal handling and operation

3.6 Handles. The SRS shall be provided with handles if the height exceeds 3.5 inches (89 mm) which is equivalent to 2 rack units. Number and location shall be such that the load distribution per handle shall not exceed 44 pounds (20 kg).

3.7 Warm-up. All performance specifications shall be met following a 30-minute warm-up period.

3.8 Temperature and Humidity. The SRS shall meet the conditions below:

3.9 Fungus Resistance. The SRS shall be inherently fungus inert without the use of organic components that would promote such growth.

3.10 Electromagnetic Compatibility. The SRS EMC certification must be in accordance with IEC/EN 61326-1 or equivalent standards. Proof of certification is required. No additional requirements are invoked for EMC.

3.11 Safety. The SRS shall comply with the safely requirements of IEC/EN 61010-1.

3.12 Marking and Identification. SRS shall be marked and identified in accordance with paragraphs 3.12.1 and 3.12.5 below.

3.12.1 Equipment Identification. The SRS equipment identification shall include, at a minimum: manufacturer, FSCM/CAGE number, model number including installed items at the time of purchase, nomenclature, and serial number.

3.12.2 Firmware Identification. The SRS shall be capable of displaying the firmware version on the front panel display upon operator command.

3.12.3 Calibration Label. The contractor shall affix a calibration label to each SRS specifying the date that the instrument was calibrated. The government reserves the right to incorporate a government-approved calibration interval (next date due) that may be different from the manufacturer-recommended interval. This will not impose any additional liability on the manufacturer.

3.12.4 Warranty Label. The contractor shall affix a warranty label to each SRS specifying instrument model number, nomenclature, manufacturer, FSCM/CAGE number, contract number, and warranty expiration date.

3.12.5 Item Unique Identification. The contractor shall affix an IUID label complying with the requirements of DFARS.

3.13 Calibration Interval. The SRS manufacturer shall substantiate the calibration interval by providing the statistical data used to derive the interval.

3.14 Maintainability. The SRS design shall permit isolation of faults, and repair down to the modular level (circuit card and sub-assembly level).

3.15 Performance. Performance requirements for the SRS shall be in accordance with the sub-paragraphs below. These requirements comprise the full performance requirement for the SRS. All performance specifications shall apply with a laboratory temperature of 15 to 30(C and a relative humidity of 20 to 60%. Where applicable, specifications should be stated with a coverage factor k=2 producing an interval having a level of confidence of approximately 95%.

3.15.1 Performance Characteristics. The SRS electrical characteristics shall be at least the following.

Reference Input

Reference Output

Output Current:

Outputs (isolated)

Angular Accuracy vs. Frequency:

Output Drive Capability:

Output Impedance Maximum:

Dynamic Angular Modulation:

3.15.2 Calibration Data. The SRS shall be supplied with calibration measurement results data for each of the SRSs supplied.

3.15.3 Digital Interface. The SRS shall provide an ANSI/IEEE-STD-488 interface.

3.15.4 Local and Remote Modes. The SRS shall go into remote mode upon receiving any remote command. During this state, operation through the front panel shall be disabled. The SRS shall be reset to manual mode from the front panel, and also via a remote command. When switching from remote to local mode, all parameter values shall remain unchanged.

3.15.5 Calibration/Repair Site. The SRS manufacturer calibration and repair facilities/support.

3.15.6 Security. The SRS design shall prevent the user from inadvertently making changes that could result in an incorrect measurement decision or a requirement to perform unscheduled maintenance. Design shall include a security feature, which prevents the user from accidentally formatting the internal memory, erasing and/or modifying calibration constants or factors.

3.15.7 Reliability. The design of the SRS shall be such that within 95% statistical certainty no equipment failures shall occur within at least 1500 hours of operation under normal laboratory conditions.

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

3.15.9 Maintenance provisions. The SRS shall be designed to ensure that any necessary maintenance access can be accomplished utilizing hand tools. The SRS 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.

3.15.10 Calibration (Performance Verification). The SRS performance verification shall be accomplished with existing Navy calibration standards. The performance verification process shall not require the use of an external controller, proprietary software, or other proprietary equipment or test fixtures.

3.15.11 Adjustment/Alignment. The SRS shall be provided with any necessary instructions/hardware/software required to adjust and align the SRS so that it meets its performance specifications after repair or due to the equipment failing performance verification.

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

DISTRIBUTION STATEMENT A. APPROVED FOR PUBLIC RELEASE, DISTRIBUTION IS UNLIMITED.

REF

S1 S2 S3 S4 S4