NEMP Simulator MIL-STD-461 RS105 / GJB 151B-2013
NEMP Simulator
MIL-STD-461 RS105 / GJB 151B-2013
一、System Picture
二、System Specification
Montena designs and manufactures NEMP (Nuclear Electromagnetic Pulse) simulators according to MIL-STD-461 RS105 (radiated susceptibility).
This standard is applicable to equipment or subsystems located outside a shielded facility. A transient electromagnetic pulse of up to 50 kV/m with a rise time in the nanosecond range is applied to the equipment under test (EUT) at least 5 times. EUT should not exhibit any signs of performance degradation.
The simulator setup mainly consists of a high voltage pulse generator connected to a transmission line ended with distributed resistors. A voltage monitor and various field sensors are used to measure the generator output and the electric and magnetic field impulses. An optical fibre link is required to transmit the signal to the oscilloscope.
三、System Use / Features
● Proven performance with many systems installed worldwide
● Triangular transmission line design with distributed load resistors for bounded wave propagation with minimal reflexion
● Indoor transportable small test systems; outdoor permanent large test installations
● Automated management and test report generation for simple measurement
● Low risk of operator’s handling mistakes
● Other pulse shapes according to other standards such as IEC or national standards on request
● Expertise in the refurbishment of existing old test installations
四、System Parameters
Aero-rad systems include a range of standard size installations for EUT from a height of 50 cm up to large structures such as vehicles or airplanes. The smallest systems are transportable and can be set up and removed in less than 2 hours.
| EQUIPMENT | REFERENCE | SPECIFICATIONS | |
| Movable indoor simulators | Generator + control unit | EMP80K, EMP170K or EMP230K | Generators with 80 kV, 170 kV or 230 kV charging voltage |
| Transmission line | RL180, RL270 or RL360 | Movable radiating lines. Heights of 1.8 m, 2.7 m or 3.6 m | |
| Fixed outdoor simulators | Generator + control unit | EMP360K to 800K | Generators from 360 kV up to 800 kV charging voltage |
| Transmission line | RL540 to RL1290 | Fixed radiating line. Heights from 5.4 m to 12.9 m | |
| Pulse monitoring | Voltage monitor | SV1G | Monitoring of the generator output pulse |
| Free field sensor | SFE3-5G | Free space field sensors up to 3.5 GHz | |
| Ground field sensor | SGE3-5G | Ground plane field sensor up to 3.5 GHz | |
| Passive integrator | ITR1-2U | Passive integrator for ground plane field sensor and voltage monitor | |
| Balun | BL3-5G | Balun for free space field sensor | |
| Measurement equipment | Data transmission | MOL3000 & FCLB50 | Analog optical link with 50 m single mode fibre |
| Shielded box | SB3G | Enclosure to protect the oscilloscope from the EM pulse | |
| Oscilloscope | OD4C600M | 600 MHz bandwidth, 10 Gs/s, 4 channels | |
| Software | Computer control of the simulator and electromagnetic field measurement |
The following table gives some examples of simulators compliant with the 50 kV/m electric field required in MIL-STD-461 RS105.
| GENERATOR REFERENCE | RADIATING LINE REFERENCE | EUT DIMENSION IN METER WIDTH LENGTH HEIGHT | SYSTEM OVERALL DIMENSIONS INMETER WIDTH LENGTH HEIGHT | ||||
| EMP80K-2-23 | RL180-50 | 2.2 | 1.3 | 0.57 | 2.5 | 6.6 | 1.8 |
| EMP170K-2-23 | RL270-50 | 3.4 | 1.9 | 0.85 | 3.75 | 10.9 | 2.7 |
| EMP230K-2-23 | RL360-50 | 4.5 | 2.5 | 1.1 | 5.0 | 14.3 | 3.6 |
| EMP360K-2-23 | RL540-50 | 7.0 | 9.0 | 1.6 | 8.0 | 31.0 | 5.4 |
| EMP450K-2-23 | RL720-50 | 9.0 | 12.0 | 2.1 | 10.0 | 41.0 | 7.2 |
| EMP670K-2-23 | RL1080-50 | 13.0 | 18.0 | 3.2 | 15.0 | 62.0 | 10.8 |
| EMP800K-2-23 | RL1290-50 | 14.0 | 25.0 | 3.7 | 18.0 | 74.0 | 12.9 |
| Rs105 simulators using GTEM and coaxial generators are available on request | |||||||
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