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LAPLACE CDNS - COUPLING-DECOUPLING NETWORK

Laplace supply a wide range of CDNs that are fully compliant to IEC61000-4-6.
In addition to a range of ‘conventional’ CDNs, Laplace are unique in offering two other types. Both types are ‘versatile’ in that they are configurable, offering great flexibility in terms of the type of cable each model can be used with. This reduces the number of CDNs necessary to hold in stock. The final type is, in addition to being versatile, fitted with an output which monitors the RF level applied to the cable.

Laplace Instruments CDN - Coupling decoupling Network

 Type

 Description

 Standard

 Conventional CDNs. Compliant to IEC61000-4-6.
Wide range of models to suit a wide variety of cable types

 Versatile

 Compliant to IEC61000-4-6. Just 5 models. Each model is versatile and can be configured to suit a wide range of cable types. Over 25 different cable types can be accommodated by these 5 models.

 Enhanced

 Identical to the versatile type described above, but with the additional benefit of the inclusion of a feedback network and detector such that the applied stress level can be monitored and used (if required) as part of the level control system.

Standard

These are grouped into three classes:
• Mains power cables
• Unscreened cables
• Screened cables

Versatile and Enhanced

These types are multi-functional. This versatility means that the need to carry a large range of different types of CDN to cope with potential requirements is avoided. One type of calibration adaptors fits all models. Each type includes just 6 basic models:

TYPE

VERSATILE

ENHANCED

CABLES

Mains power

S46M3

E46M3

M1, M2, M3

Screened cables up to 25 cores

S46S25

E46S25

S1 TO S25

Unscreened cables up to 24 cores

S46T24

E46T24

T2, T3, T4, T5, T6, T8, T12, T24

Telecom cables to 8 cores

S46ST8

E46ST8

1, 2 OR 4 TWISTED PAIRS

Telecom cables to 6 cores

S46ST6

E46ST6

SCREENED OR UN-SCREENED 1,2,3 OR 6 CORE

3 Phase high power

S46M5/9

———

M2, M3, M4, OR M5 + AUX LINES

In addition, the S46M5/9 is a multi-function CDN capable of 100A rating for M3 and M2 configuration, or 50A in M5 and M4 (three phase) configurations. This CDN also has an additional 4 cores rated at 6A for ground wire, control or sensing requirements.

 

Each model can be configured to cover a wide variety of cables, and still maintain full compliance with IEC61000-4-6. The Enhanced models can be used in conjunction with a suitable signal generator such that closed loop level control can be achieved. This offers the advantages of greater efficiency, reduced RF power requirement and better accuracy for the applied RF level.

 

Note that the RFIC-4-6 synthesiser system from Laplace offers the capability to work with the enhanced CDNs (as well as standard and versatile types). Other synthesisers will not work in the ‘enhanced’ mode.

Additional Acessories:

46GP Ground Plane

46XP Extended Ground plane

 

ASSOCIATED DOWNLOADS

Laplace Instruments Advanced CDNs for EMC and EMI Testing

Laplace Instruments Enhanced CDNs Paper presented at the York EMC Symposium 1999

Laplace Instruments CDN Type x46xx Versatile Coupling Decoupling Network Users Manual

Laplace Instruments High Current CDN