The EMC can provide test eqipment for subcategories of MIL-STD-461; Conducted Susceptibility with applications for:
Power Leads, Antenna Port, Intermodulation, Rejection of Undesired Signals, Cross-Modulation, Structure Current, Bulk Cable Injection, Impulse Excitation, Damped Sinusoidal Transients, Cables and Power Leads, Lightning Induced Transients, and Personnel Borne Electrostatic Discharge
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Subcategories
Conducted Susceptibility, Power Leads, 30 Hz to 150 kHz
This test procedure is used to verify the ability of the EUT to withstand signals coupled onto input power leads. There are two methods provided for making measurements of the applied signal. The first uses an oscilloscope with a power input isolation transformer. The second uses a measurement receiver together with a transducer. The transducer is intended to electrically isolate the receiver from the EUT power and reduce the signal levels to protect the receiver.
The test equipment shall be as follows:
a. Signal generator
b. Power amplifier
c. Oscilloscope or measurement receiver
d. Coupling transformer
e. Capacitor, 10 μF
f. Isolation transformer
g. Resistor, 0.5 ohm
h. LISNs
i. Transducer for measurement receiver use
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MIL-STD-461 CS109 Conducted Susceptibility, Structure Current, 60 Hz to 100 kHz
This test procedure is used to verify the ability of the EUT to withstand structure currents.
The test equipment shall be as follows:
a. Signal generator
b. Amplifier (if required)
c. Isolation transformers
d. Current probe
e. Measurement receiver
f. Resistor, 0.5 ohm
g. Coupling transformer
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Conducted Susceptibility, Bulk Cable Injection (BCI)
The MIL-STD-461 CS114 requirement is applicable from 10 kHz to 200 MHz for all interconnecting cables, including power cables.
The MIL-STD-461 CS114 test procedure is used to verify the ability of the EUT to withstand RF signals coupled onto EUT associated cabling.
The test equipment shall be as follows:
a. Measurement receivers
b. Current injection probes (maximum and minimum insertion loss shown on Figure CS114-2)
c. Current probes
d. Calibration fixture: coaxial transmission line with 50 ohm characteristic impedance, coaxial connections on both ends, and space for an injection probe around the center conductor.
e. Directional couplers
f. Signal generators
g. Plotter h. Attenuators, 50 ohm
i. Coaxial loads, 50 ohm
j. Power amplifiers
k. LISN
The EMC Shop offers turn key solutions to complete conductred susceptibility tests required per MIL-STD-461 CS114.
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Conducted Susceptibility, bulk cable injection, impulse excitation
This test procedure is used to verify the ability of the EUT to withstand impulse signals coupled onto EUT associated cabling.
The test equipment shall be as follows:
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Conducted susceptibility, damped sinusoidal transients, cables and power leads.
The test equipment shall be as follows:
a. Damped sinusoid transient generator, ≤ 100 ohm output impedance
Conducted susceptibility, lightning induced transients, cables and power leads.
Military Standard 461 Version G's new section CS 117 requires multiple stroke surge testing using a lightning transient generator. This requirement is similar to the well established RTCA/DO-160 Section 22 lightning immunity test standard.
The test equipment shall be as follows:
a. Lightning transient generator
b. Injection Transformers
c. Oscilloscope
d. Current monitor probes
e. Attenuators, 50 ohm, as needed on current monitor probes
f. Voltage monitor probes, high impedance
g. Monitor loop, low impedance wire loop
h. Calibration loop, low impedance wire loop
i. Capacitor, >28,000 µF for DC power inputs
j. LISN
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Personnel Borne Electrostatic Discharge
This requirement is applicable to electrical, electronic, and electromechanical subsystems and equipment that have a man-machine interface. It is not applicable to ordnance items.
The test equipment shall be as follows:
a. ESD Generator, adjustable from ±2kV to ±15kV (minimum range),
and Table X for simplified ESD generator characteristics.
b. ESD network, 150 picofarads (pF) capacitance, 330 ohm discharge resistance.
c. Contact discharge tip Figure CS118-2.
d. Air discharge tip Figure CS118-2.
e. Electrostatic voltmeter.
f. Oscilloscope, single event bandwidth ≥ 1 GHz.
g. ESD current target, input resistance 2 ±5% ohms, Figure CS118-3.
h. Attenuator, 20 dB.
i. Coaxial cable, 50 ohm impedance, ≤ 1 meter.
j. Metallic ground plane.
k. Ionizer or one (1) megohm resistor (1MΩ±10%).
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