GJB Military Standard-SRC-Test

GJB Military Standard

A detailed compilation of GJB and related military standard test items, covering GJB 151 series electromagnetic emissions & susceptibility, GJB 1389 system-level electromagnetic environmental effects, GJB 181 aircraft power characteristics, etc., including test objects, typical scenarios, frequency ranges, and applicable standards. Suitable for EMC design, qualification, and verification of military equipment and airborne systems.

业务场景

1. Conducted Emission (CE)

Parameter	Frequency/Range	Test Purpose	Typical Scenario
CE101	25Hz ~ 10kHz	Power Lead Conducted Emission (Low Frequency)	Assess equipment emission of low-frequency harmonics/noise on power lines
CE102	10kHz ~ 10MHz	Power Lead Conducted Emission (High Frequency)	Assess equipment emission of high-frequency switching noise, harmonics
CE106	10kHz ~ 40GHz	Antenna Port Conducted Emission	Assess radiated or conducted interference at antenna ports
CE107	Time Domain (Spike)	Power Lead Spike (Time Domain) Conducted Emission	Assess transient spike interference generated by equipment

2. Conducted Susceptibility (CS)

Parameter	Frequency/Waveform	Test Purpose	Typical Scenario
CS101	25Hz ~ 150kHz	Power Lead Conducted Susceptibility	Verify equipment immunity to low-frequency interference on power lines
CS102	25Hz ~ 50kHz	Ground Lead Conducted Susceptibility	Assess equipment sensitivity to ground line interference
CS106	Spike Pulse	Power Lead Spike Conducted Susceptibility	Verify equipment immunity to power spikes (e.g., switching transients)
CS109	50Hz ~ 100kHz	Case Current Conducted Susceptibility	Assess interference sensitivity caused by equipment case current
CS112	Electrostatic Discharge (ESD)	Electrostatic Discharge Susceptibility	Verify equipment immunity to electrostatic discharge
CS114	4kHz ~ 400MHz	Bulk Cable Injection Conducted Susceptibility	Assess equipment immunity to RF interference coupled via cables
CS115	Pulse Excitation	Bulk Cable Injection, Pulse Excitation Conducted Susceptibility	Simulate fast transient pulse interference
CS116	10kHz ~ 100MHz, Damped Sinusoidal Transient	Cable & Power Lead Damped Sinusoidal Transient Conducted Susceptibility	Simulate damped sinusoidal transients (e.g., lightning, switching)
CS117	Lightning Induced Waveform	Cable & Power Lead Lightning Induced Transient Conducted Susceptibility	Assess equipment immunity to lightning-induced transients

3. Radiated Emission (RE)

Parameter	Frequency/Range	Test Purpose	Typical Scenario
RE101	25Hz ~ 100kHz	Magnetic Field Radiated Emission	Assess low-frequency magnetic field leakage (e.g., transformers, motors)
RE102	10kHz ~ 18GHz	Electric Field Radiated Emission	Assess broadband electric field radiation; most critical radiated emission test

4. Radiated Susceptibility (RS)

Parameter	Frequency/Range	Test Purpose	Typical Scenario
RS101	25Hz ~ 100kHz	Magnetic Field Radiated Susceptibility	Verify equipment immunity to low-frequency magnetic fields
RS103	10kHz ~ 40GHz	Electric Field Radiated Susceptibility	Verify equipment immunity to broadband electric field radiation

II. GJB 1389 Series (System-Level Electromagnetic Environmental Effects)

Applicable Standards: GJB 1389A-2005, GJB 1389B-2022

Test Item	Test Purpose	Typical Scenario
Intra-system Electromagnetic Compatibility	Verify equipment within a system does not interfere with each other	Complex weapon system integration (aircraft, ships, missile systems)
Subsystem & Equipment EMI	Assess interference from subsystems/equipment on the overall system	System integration phase
System Safety Margin	Ensure adequate system margin in electromagnetic environments	System-level immunity assessment
External RF Electromagnetic Environment	Assess system adaptability to external RF fields	Platform operability near high-field environments (e.g., comms base stations, radar)
Electrostatic Charge Control	Prevent hazards from electrostatic accumulation	Fuel systems, electronic bays, munitions bays
Electromagnetic Radiation Hazards (HERO, HERF, HERP)	Assess safety impact on personnel, fuel, munitions, electronics	Shipboard, airborne, vehicle-mounted weapon systems
Electrical Bonding	Ensure continuity of grounding and bonding	Verification of lightning protection, ESD control, EMC grounding design

Associated Test Method: GJB 8848-2016: Test Methods for System Electromagnetic Environmental Effects (covers specific procedures for all above items)

III. GJB 181 Series (Aircraft Power Characteristics)

Applicable Standards: GJB 181B-2012, GJB 181A-2023

Test Item	Test Purpose	Typical Scenario
AC Power Characteristics	Verify voltage, frequency, waveform quality of onboard AC power (115V/400Hz or 220V/50Hz)	Aircraft power system design, ground tests
DC Power Characteristics	Verify steady-state, transient, ripple, spike characteristics of onboard DC power (28V or 270V)	DC power distribution system verification
Transfer/Transition Characteristics	Assess transient effects during power source switching (main/standby, external/internal)	Power transfer, in-flight engine start scenarios
Load Characteristics	Verify power source response under various load conditions	Equipment connection/disconnection, load transients

Corresponding Detailed Test Parameters (HB 20326 Series & MIL-HDBK-704 Series):

Single-phase AC 115V/400Hz: SAC101 ~ SAC603 (Load, Steady State, Modulation, Distortion, Transients, Interruption, Abnormal, Emergency, Power Drop, Reverse Polarity, etc.)

Three-phase AC 115V/200V/400Hz: TAC101 ~ TAC603

Single-phase Variable Frequency AC 115V: SVF101 ~ SVF603

Three-phase Variable Frequency AC 115V/200V: TVF101 ~ TVF603

Single-phase AC 220V/50Hz: SXF101 ~ SXF603

DC 270V: HDC101 ~ HDC602

DC 28V: LDC101 ~ LDC602

IV. GJB 3947A-2009 (General Specification for Military Electronic Test Equipment)

Applicable to: Test equipment used in military programs.

Test Item	Test Purpose
RE102 Electric Field Radiated Emission	Control radiated emissions from test equipment itself
CE102 Power Lead Conducted Emission	Control conducted interference
CS101 Power Lead Conducted Susceptibility	Immunity to low-frequency interference on power leads
CS114 Bulk Cable Injection Conducted Susceptibility	Immunity to RF interference coupled via cables
Power Terminal Disturbance	Measurement of disturbance voltage at power terminals
Electromagnetic Radiated Disturbance	Measurement of radiated emissions
Electrostatic Discharge (ESD) Immunity	Immunity to ESD
Electromagnetic Radiated Immunity	Radiated immunity
Electrical Fast Transient (EFT/Burst) Immunity	Immunity to EFT/Burst
RF Field Induced Conducted Disturbance Immunity	Immunity to injected RF interference

V. GJB 3590-1999 (Electromagnetic Compatibility Requirements for Space Systems)

Test Item	Typical Application Scenario
CE101 / CE102	Satellite power lead conducted emissions
CS101 / CS106 / CS114	Conducted susceptibility
RS103	Radiated susceptibility (e.g., launch vehicle susceptibility to ground radar)
Electrostatic Discharge (ESD) Sensitivity	ESD protection for satellite components during assembly and at launch sites
Electrical Bonding	Continuity of spacecraft structural grounding

VI. Naval Ship Standards (HJB 34A-2007 / HJB 237-2001)

Test Item	Description
CE01 / CE03	Power lead conducted emissions (low/high frequency)
CS01 / CS06 / CS09 / CS10 / CS11 / CS12	Conducted susceptibility series (power leads, ground, spikes, circulating currents, cable injection, damped sine, ESD)
RE01 / RE02	Magnetic / Electric field radiated emissions
RS01 / RS03	Magnetic / Electric field radiated susceptibility
Bonding & Ground Resistance	Quality of ship structure bonding
Insulation Resistance	Power system insulation testing
Compartment Electric Field	Measurement of electromagnetic environment within compartments
Integrated Interference	System-level mutual interference assessment

VII. Other Important Test Items (Supplement)

Test Item	Applicable Standard	Brief Description
Capacitance to Ground / Power Lead-to-Ground Capacitance	GJB 151B-2013	Measure equipment capacitance to ground for EMC analysis
Electrical Bonding	GJB 1389A/B, GJB 3590	Verify resistance of grounding and structural connections
Insulation Resistance	HJB 237-2001	Measure electrical insulation performance
Electromagnetic Radiation Exposure Limits	GJB 5313A-2017	Measurement of electromagnetic field strength in personnel safety zones

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