Test Setup for MIL-STD-461 D, E&F CS114 + CS115 + CS116 · CS114 injected signal and level CS 114 test system delivers the CW signal according to MIL-STD 461 D, E and F versions

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CH-1728 Rossens – phone ++41 (0)26 411 93 33 – fax ++41(0)26 411 93 30 - http://www.emc.montena.com

System description

Test Setup for MIL-STD-461 D, E&F

CS114 + CS115 + CS116

1. MONTENA EMC.............................................................................................................................. 2 1.1 PRODUCTS ................................................................................................................................................... 3 1.2 TURN KEY MIL STD 461 TEST INSTALLATIONS ................................................................................................. 3

2. TEST SETUP DESCRIPTION ......................................................................................................... 4 2.1 TEST SETUP ................................................................................................................................................. 4 2.2 CALIBRATION SETUP ...................................................................................................................................... 5 2.3 INJECTED PERTURBATIONS ............................................................................................................................. 6

3. CS 115 SQUARE PULSE GENERATOR ..................... ................................................................... 9

4. CS 116 DAMPED SINUSOIDAL PULSE GENERATOR .......... ...................................................... 9

5. CONTROL INTERFACE FOR FULLY AUTOMATED SYSTEM ...... ............................................ 12

6. OTHER MEASUREMENT SYSTEMS & ACCESSORIES ........... ................................................. 13 6.1 INJECTION PROBE WITH CALIBRATION JIG ....................................................................................................... 13 6.2 LISN ......................................................................................................................................................... 13

7. SERVICES ..................................................................................................................................... 13 7.1 ONSITE INSTALLATION AND TRAINING ............................................................................................................. 13 7.2 MAINTENANCE ............................................................................................................................................ 13

8. TECHNICAL SPECIFICATIONS .......................... ......................................................................... 14

Version VoF 03.02.2009

V:\Marketing\Prospectus_produits\SystemDescriptionDocuments\CS114_115_116_Test_Setup_Description.DOC

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1. Montena emc

Since its foundation in 1978, montena emc has earned a worldwide reputation for its leading-edge skills in the fields of high voltage, high frequency and electromagnetic fields.

Montena emc is number one EMC test lab in Switzerland, with a team of 35 people (23 engineers). With two large anechoic chambers, an open area test site and multiple shielded rooms, montena can test and validate all kinds of equipment.

Figure 1 : Montena emc headquarters - helicopter in an anechoic chamber

montena emc laboratory is accredited by SAS (Swiss Accreditation Service) for the calibration of EMC measuring devices as well as for the verification of the electrical safety of equipment and devices according to European Union directives and to the Swiss legislation.

Montena can count on highly specialized specialised know-how in the field of electromagnetic compatibility. These skills are put to good use in our EMC laboratories as well as in the development and construction of various kinds of equipment. In the field of high voltage and high frequencies, montena's engineers are masters of the techniques used to generate rapid fast pulses, including those to endow them with special characteristics.

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1.1 Products

Montena emc designs, builds and markets equipment and accessories for EMC tests. The range of products includes antennas, TEM cells, striplines, field sensors, all kind of pulse generators, test benches, etc.

Montena's high voltage pulse generators are mainly used for EMC tests, ultra-rapid imaging and pulsed light decontamination. Montena also builds pulse generators according the custom specific needs.

Figure 2 : some of montena emc products

1.2 Turn key MIL STD 461 test installations

Montena has developed and sold worldwide turnkey test setups for MIL-STD 461 test as RS 101, CS 101, CS 114, CS 115, CS 116 and RS 105.

Figure 3 : example of test setup from montena

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2. Test setup description

2.1 Test setup

montena’s fully automated test setup for MIL-STD 461, CS 114 + 115 + 116 comprises following elements:

PC

Oscilloscope

EUT

Current

probe

Signal

generator

Power input

HF Switch

LISN

Injection

probe

Amplifier &

directional

coupler

Damped

sinusoidal

generator

Pulse

generator

Figure 4 : schematic of a typical CS 116 test setup installation

The pulse generators and the signal generator + amplifiers are connected to the current injection probe through a high voltage, high frequency, remotely controlled switch.

The 3 tests can be performed fully automatically without any re-connection of cables.

An oscilloscope connected to a current probe checks the level of the injected perturbation. LISN are to be used to control the impedance on the power line.

A PC with a control software allows fully automatic calibration and test sequences, as well as the automatic generation of test reports.

One single signal output

Thanks to the HF switch, the whole calibration or the measurement phase can be performed for the 3 tests without any need to change the cabling, considerably reducing the calibration and measurement time.

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2.2 Calibration setup

MIL-STD 461, CS 114 + 115 + 116 calibration for the 3 tests can be performed fully automatically without any re-connection of cables

PC

OscilloscopeSignal

generator

attenuator

HF Switch

Amplifier &

directional

coupler

Damped

sinusoidal

generator

Pulse

generator

50 Ω load

Injection probe with

calibration ficture Figure 5 : schematic of a CS 114 + 115 + 116 calibration setup

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2.3 Injected perturbations

CS114 injected signal and level

CS 114 test system delivers the CW signal according to MIL-STD 461 D, E and F versions.

In the control software the user can select the test signal level based on the defined curves and table taken from the standards.

Figure 6 : MIL-STD-461 D, E&F CS114 current level

In the automatic mode (software controlled) the system calibration will automatically determine the required generator's output level to obtain the specified current injection level.

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CS115 pulse shape and level

CS 115 test system delivers a square pulse according to MIL-STD 461 D, E and F versions.

Figure 7 : MIL-STD-461 D, E&F CS115 pulse shape

In the automatic mode (software controlled) the current injection level can be defined and the system calibration will automatically determine the required generator's output level to obtain the specified current injection level.

CS116 pulse shape and level

CS 116 test system delivers a damped sinusoidal pulse according to MIL-STD 461 D, E and F versions.

Figure 8 : MIL-STD-461 D, E&F CS116 pulse shape

The damped sinusoidal pulse level can be manually tuned to obtain the required current injection level.

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Note: in the MIL-STD 461 D&E versions, two levels are defined with

1. For Army and Navy procurements, IMAX = 10 amperes

2. For Air Force procurements, IMAX = 5 amperes

Figure 9 : MIL-STD-461 D, E&F CS116 pulse current level

In the automatic mode (software controlled) the current injection level can be defined for each available discrete frequency and the system calibration will automatically determine the required generator's output level to obtain the specified current injection level.

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3. CS 115 square pulse generator

Figure 10: Montena pulse generator for CS 115

Control panel

The control panel allows the user to select the desired output voltage and the pulse repetition rate.

The generator can be controlled by the front panel or remotely from the control software.

4. CS 116 damped sinusoidal pulse generator

The damped sinusoidal generator POG_116 xF can be supplied with 6 to 16 discrete frequencies.

Figure 11: Montena pulse generator for CS 116

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Menu driven control panel

The menu driven control panel allows the user to select the desired discrete frequency, the pulse voltage level, the repetition rate and the number of pulse to be generated.

> Volt. = 070.0% Voltage in % of maximum level

Freq. = 1MHz Frequency

Rate = 0.5Hz Repetition rate

Nbr = 019/600 L Number of pulses (current count/fixed number)

From 6 to 16 frequencies

The MIL STD 461 D, E & F CS116 requires testing the susceptibility at 6 discrete frequencies between 10 kHz and 100 MHz.

Montena's CS116 generator provides additional frequencies too:

Oscillation frequency

Damping factor 1)

Maximal current 1)

PDG116 - 6F

PDG116 - 9F

PDG116 - 12F

PDG116 - 16F

10 kHz 10-20 0.1 A x x x x 30 kHz2) 10-20 0.3 A x x x 100 kHz 10-20 1 A x x x x 300 kHz2) 10-20 3 A x x x 1 MHz 10-20 10 A x x x x 3 MHz2) 10-20 10 A x x x 10 MHz 10-20 10 A x x x x 20 MHz2) 10-20 10 A x x 30 MHz 10-20 10 A x x x x 40 MHz2) 10-20 7.5 A x 50 MHz2) 10-20 6.0 A x x 60 MHz2) 10-20 5.0 A x 70 MHz2) 10-20 4.3 A x x 20 MHz2) 10-20 3.7 A x 20 MHz2) 10-20 3.3 A x 100 MHz 10-20 3 A x x x x

1) At 100 % voltage setting and with a 2 m 50 Ω coaxial cable, with the dedicated injection probe (e.g. Prâna IP-DR250) and calibration jig, on the 100 ohm calibration load.

2) These frequencies are not required by the MIL STD 461 but we recommend them to have a better coverage of the frequency range.

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6 frequencies

9 frequencies

16 frequencies

12 frequencies

Figure 12: Available CS116 test frequencies

In some cases it is very interesting to be able to test the susceptibility of the equipment with some in-between frequencies which will be present in the real deployment and will threaten the equipment's performances.

Optionally montena can provides some additional discrete frequencies anywhere in the range comprised between 10 kHz and 100 MHz.

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5. Control interface for fully automated system

The remote control can be carried out through the RS 232, USB or GPIB.

The CS 114 + 115 + 116 test setup from montena is supplied with a dedicated control software with graphical user interface as shown below.

Figure 13 : CS116 control software

This control software comprises:

• A main panel to select the desired tests to be performed

• A calibration panel allowing a fully automated calibration of the system.

• A measurement panel allowing a fully automated measurement phase with sequential injection of the defined current level for each selected test standard and at each available discrete frequency.

• A report generation to keep track of measurements as well as of calibrations.

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6. Other measurement systems & accessories

6.1 Injection probe with calibration jig

The injection probe is required for both measurement and for the calibration phases.

For the system calibration phase, the current injection probe is calibrated with help of a calibration jig, an attenuator and a 50 ohm termination load.

6.2 LISN

The LISN (Line Impedance Stabilisation Network) are used to provide standardised impedance in common mode to the power lines connected to the EUT. This allows a better reproducibility of the tests.

The LISN50-25 fulfils the MIL-STD 461 D,E and F requirements

• 50 Ω // 50 µH

• 1 x 25 A

• 230 Vac (50/60 Hz) - 115 Vac (400 Hz)

7. Services

7.1 Onsite installation and training

Montena emc provides onsite installation and training performed by either an engineer from montena emc or by a local authorized representative support engineer.

A training session is usually given directly after installation. This training includes both the test system operation and maintenance.

7.2 Maintenance

No periodical maintenance is required other than a calibration of the measurement equipment.

On customer request montena can offer this calibration service with support of montena's authorized local representative.

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8. Technical specifications

Technical specifications of the CS115 pulse generat or

Generator type square pulse

Nominal charging voltage 0 - 5 kV

Output waveform square

Output impedance 50 ohm

Rise time (10 – 90%) ≤ 700 ps

Fall time (90 – 10%) ≤ 1.5 ns

Pulse duration (50 – 50%) > 30 ns

Repetition rates 1 - 60 Hz

Pulse number (repetitive mode) 1 - 10’000 pulses

Output signal connexion N 50 ohm

Power rating 90 - 250 Vac / 50 - 60 Hz / 35 W / 75 VA

Safety complies with EN 61010-1

EMC complies with EN 61326-1

Interface RS 232 (Sub-D 9 pins female connector)

Storage temperature 5 - 50 °C

Working temperature 10 - 45 °C

Relative humidity maximum 60 %

Generator weight 7kg

Dimensions (L x W x H) 36 cm x 35 cm x 16 cm

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Technical specifications of the CS116 pulse generat or

Generator type damped transient wave

Nominal charging voltage 15 kV positive only

Output waveform damped oscillatory wave

Output impedance < 100 ohm

Damping factor 15 +/- 5

Repetition rates single, 0.5 Hz, 1 Hz

Pulse number (repetitive mode) 1 - 600 pulses

Maximum sequence duration 20 min.

Mechanical life 1 million pulses at each frequency in the range 3 MHz to 100 MHz

There is no mechanical devices in the range 10 kHz to 1 MHz.

Output signal connexion N 50 ohm

Power rating 90 - 250 Vac / 50 - 60 Hz / 35 W / 75 VA

Safety complies with EN 61010-1

EMC complies with EN 61326-1

Control interface RS 232 (Sub-D 9 pins female connector)

Storage temperature 5 - 50 °C

Working temperature 10 - 45 °C

Relative humidity maximum 60 %

Generator weight 27.5 kg (for 9 frequencies)

Dimensions (L x W x H) 53 cm x 53 cm x 45 cm