"""
Test and calibration procedures for sensor array
"""

class TestProcedures:
    """Testing and calibration procedures"""
    
    def __init__(self):
        self.test_equipment = {
            'field_generator': 'Parallel plate capacitor (1m spacing)',
            'voltage_source': 'High voltage DC supply (0-30kV)',
            'multimeter': '6.5-digit DMM (Keysight 34465A)',
            'temperature_chamber': 'Thermal chamber (-50 to +100°C)',
            'vibration_table': 'Electrodynamic shaker'
        }
        
        self.acceptance_criteria = {
            'sensitivity': '±2% of nominal',
            'linearity': '±1% full scale',
            'noise': '< 0.5 V/m RMS',
            'crosstalk': '< -60 dB',
            'temperature_drift': '< 0.1%/°C'
        }
    
    def calibration_procedure(self):
        """Step-by-step calibration procedure"""
        steps = [
            {
                'step': 1,
                'title': 'Initial Inspection',
                'procedure': 'Visual inspection for damage, verify IP68 seals',
                'acceptance': 'No visible damage, seals intact'
            },
            {
                'step': 2,
                'title': 'Electrical Continuity',
                'procedure': 'Check continuity of all cables and connections',
                'acceptance': 'Resistance < 1 ohm for power, < 10 ohm for signal'
            },
            {
                'step': 3,
                'title': 'Zero Field Calibration',
                'procedure': 'Place in shielded room, record 5-minute baseline',
                'acceptance': 'Output < 2 V/m RMS, no DC offset'
            },
            {
                'step': 4,
                'title': 'Sensitivity Calibration',
                'procedure': 'Apply known fields: 100, 500, 1000, 5000, 10000 V/m',
                'acceptance': 'Linearity error < 1%, sensitivity match spec'
            },
            {
                'step': 5,
                'title': 'Temperature Test',
                'procedure': 'Cycle from -40°C to +85°C in 10°C steps',
                'acceptance': 'Output change < 0.1%/°C, no hysteresis'
            },
            {
                'step': 6,
                'title': 'Vibration Test',
                'procedure': 'Apply 1g RMS random vibration 10-500 Hz for 1 hour',
                'acceptance': 'No mechanical failure, output stable'
            },
            {
                'step': 7,
                'title': 'Field Gradient Test',
                'procedure': 'Apply uniform gradient field, verify calculation',
                'acceptance': 'Gradient accuracy < 5%'
            },
            {
                'step': 8,
                'title': 'Final Documentation',
                'procedure': 'Generate calibration certificate',
                'acceptance': 'All tests passed, certificate issued'
            }
        ]
        
        return steps
    
    def print_test_protocol(self):
        """Print complete test protocol"""
        print("\n🧪 TEST AND CALIBRATION PROTOCOL:")
        print("="*60)
        
        print("\n🔧 REQUIRED EQUIPMENT:")
        for item, desc in self.test_equipment.items():
            print(f"  • {item.replace('_', ' ').title()}: {desc}")
        
        print("\n📋 ACCEPTANCE CRITERIA:")
        for test, criterion in self.acceptance_criteria.items():
            print(f"  • {test}: {criterion}")
        
        print("\n📝 CALIBRATION PROCEDURE:")
        steps = self.calibration_procedure()
        for step in steps:
            print(f"\n  Step {step['step']}: {step['title']}")
            print(f"    Procedure: {step['procedure']}")
            print(f"    Acceptance: {step['acceptance']}")
        
        print("\n⏱️ ESTIMATED TIME: 8-12 hours per unit")
        print("📊 EXPECTED YIELD: > 95% first-pass")
        print("🔄 RECALIBRATION INTERVAL: 12 months")
        
        print("\n⚠️ SAFETY PRECAUTIONS:")
        precautions = [
            "High voltage present during calibration",
            "Use insulated tools",
            "One-hand rule near HV equipment",
            "Ground all equipment properly",
            "Wear safety glasses"
        ]
        
        for precaution in precautions:
            print(f"  • {precautions}")
        
        print("="*60)

if __name__ == "__main__":
    tests = TestProcedures()
    tests.print_test_protocol()
    print("\n✅ TEST PROCEDURES READY FOR MANUFACTURING")
