EM Test DCD 5 sr-4-1

The AMETEK CTS DCD sr - series of coupling decoupling networks are multifunctional CDNs for the application of Surge and Ringwave pulses onto signal/data lines.

The standard DCD sr - models combine three different applications; coupling of Surge pulse via capacitor or gas arrestor and coupling of Ring wave pulses via capacitor being required by the relevant standards. The required coupling mode can easily be selected.

The surge coupling GTD (Gas Discharge Tube) is inside a simple jumper and can be changed depends the application with an ABD plug (Avalanche Breaking Diode). There are also two plugs for using an individual external coupling device.

The DCD sr series also has the required decoupling inductors (20 mH) for each line. To protect the measuring system, an interchangeable, pluggable voltage protection module with overvoltage protection for 50 V DC is included in the delivery at the signal/data line inputs on the AE port. Each module protects 4 lines, so that coupling networks with 8 lines require two modules.

AMETEK CTS offers coupling networks for various voltage pulses up to 7 kV (see DCD 7 series) as well as for signal currents up to 4 A. Various modules for 50 V DC and 250 V AC are available for pluggable voltage protection on the AE port.

The DCD st - series of coupling decoupling networks are designed to couple Surge pulses (1.2/50 us - 8/20 us) and Telecom Surge pulses (10/700 us) onto unshielded symmetrically operated communication lines.

The DCD st - models includes the external coupler (GTD) for coupling via gas arrestor plus the internal matching resistor Rc as per figure 10 of IEC 61000-4-5 Ed.3 with values as per the formula given by the standard. All lines are subjected to the test pulse simultaneously with respect to ground.

The DCD st - series also include the required decoupling inductors of 20 mH for each line (pairwise current compensated). To protect the auxiliary equipment being needed for testing the DUT an additional protection circuit is integrated at the communication line input.

DCD 5-A b-8-4

(with automatic coupling)

The automatic coupling network DCD 5-A b-8-4 is designed for coupling Burst pulses to signal or datalines.

The coupling network expands the range of application of the impulse generator of the compact NX series, for automatic testing signal and datalines. Main characteristics are the advantages for switching the coupling to the signal and data lines automatic with remote controlled by the compact NX generator.

The DCD 5-A b-8-4 is a coupling/decoupling network for coupling EFT / Burst impulses up to 8 unsymmetrical signal- and data-lines. The Burst impulses as per IEC 61000-4-4 are coupled via a 33 nF capacitor into the data lines in replacement of the capacitive coupling clamp.

The DCD 5-A b-8-4 couples each line via a 33 nF capacitor. Therefore, the coupled energy to each line is well defined and can be calculated. In comparison to the capacitive coupling clamp, where the energy gives more of a random value, the same value is transferred to each connected line.