IEEE 337-1972

PART I - STANDARD SPECIFICATION FORMAT
1. Scope
2. Applicable Documents
2.1 Specifications
2.2 Standards
2.3 Drawings
2.4 Bulletins
2.5 Other Publications
3. Requirements
3.1 Description
3.2 General Requirements
3.2.1 Precedence
3.2.2 Definitions
3.3 Performance
3.3.1 Operating Temperature
3.3.2 Pickoff Characteristics
3.3.3 Reference Constants
3.3.4 Pendulum Elastic Restraint
3.3.5 Input Limits
3.3.6 Overload Capacity
3.3.7 Capture Electronics
3.3.8 Accelerometer Bias
3.3.9 Accelerometer Scale Factor
3.3.10 Nonlinearity
3.3.11 Torquer Polarity
3.3.12 Self-Test Torquer Characteristics
3.3.13 Input-Axis Misalignment
3.3.14 Cross Coupling
3.3.15 Frequency Response
3.3.16 Warmup Time
3.3.17 Threshold
3.3.18 Resolution
3.3.19 Turn-On Hysteresis
3.3.20 Life
3.4 Mechanical Requirements
3.4.1 Exterior Surfaces
3.4.2 Dimensions
3.4.3 Accelerometer Axes
3.4.4 Weight
3.4.5 Seal
3.4.6 Identification of Product
3.5 Electrical Requirements
3.5.1 Electrical Schematic
3.5.2 Excitation
3.5.3 Impedances
3.5.4 Insulation Resistance
3.5.5 Dielectric Strength
3.5.6 Electromagnetic Interference
3.5.7 Magnetic Flux Leakage
3.6 Environmental Requirements
3.6.1 Nonoperative Environment
3.6.2 Operative Environment
3.7 Reliability
3.7.1 Reliability Program
3.7.2 Mean Time Between Failure
4. Quality Assurance
4.1 Classification of Tests
4.2 Acceptance Tests
4.3 Qualification Tests
4.4 Reliability Tests
4.5 Test Conditions and Equipment
4.6 Test Methods
4.6.1 Nonoperative Tests
4.6.2 Operative Open-Loop Tests
4.6.3 Operative Closed-Loop Tests
4.6.4 Environmental Tests
4.7 Data Submittal
5. Preparation for Delivery
6. Notes
6.1 Intended Use
6.2 Ordering Data
6.3 Model Equation
PART II - STANDARD TEST PROCEDURE
7. Scope
8. Description
9. Test Conditions and Equipment
9.1 Standard Test Conditions
9.1.1 Ambient Environment
9.1.2 Installation Requirements
9.1.3 Electrical Requirements
9.2 Test Equipment
9.2.1 General Requirements
9.2.2 Description of Test Equipment
9.3 Starting Procedure
9.3.1 Operative Open-Loop Tests
9.3.2 Operative Closed-Loop Tests
10. Test Procedure
10.1 Nonoperative Tests
10.1.1 Examination of Product
10.1.2 Weight
10.1.3 Test Setup
10.1.4 Impedance
10.1.5 Dielectric Strength
10.1.6 Insulation Resistance
10.1.7 Seal
10.1.8 Temperature Sensor Characteristics
10.1.9 Power Stress
10.2 Operative Open-Loop Tests
10.2.1 Test Setup
10.2.2 Electrical Null
10.2.3 Pickoff Characteristics
10.2.4 Torquer and Self-Test Torquer Polarity
10.2.5 Frequency Response
10.3 Operative Closed-Loop Tests
10.3.1 Test Setup
10.3.2 Scale Factor and Bias
10.3.3 Pickoff Scale Factor and Pendulum Elastic
        Restraint
10.3.4 Input Axis Misalignment
10.3.5 Static Multipoint Test
10.3.6 Turn-On Hysteresis
10.3.7 Threshold and Resolution
10.3.8 Warmup Time
10.3.9 Self-Test Torquer Scale Factor
10.3.10 Short Term Stability
10.3.11 Long Term Stability
10.3.12 Repeatability
10.3.13 Sensitivity
10.3.14 Centrifuge Input Range Test
10.3.15 Precision Centrifuge Test
10.3.16 Life, Storage
10.3.17 Life, Operating
10.4 Environmental Tests
FIGURES
1. Dimensions
2. Electrical Schematic
3. Test Circuit for the Measurement of Pickoff Scale
     Factor and Pendulum Elastic Restraint
4. Suggested Accelerometer Environment and Test
     Combinations
APPENDIXES
A. Accelerometer Dynamic Equations
A1. Introduction
A2. Open-Loop Operation
A3. Closed-Loop Operation
B. Static Multipoint Test
B1. Introduction
B2. Model Equation
B3. Test Procedure - Mounting Position 1
B4. Test Procedure - Mounting Position 2
B5. Best Estimate of Model Equation Coefficients
FIGURES
A1. Block Diagram for Open-Loop Operation
A2. Block Diagram for Closed-Loop Operation

Defines the requirements for a linear, single-axis, pendulous, analog torque balance accelerometer.