Schlöder CNxx Coupling Network Series
Frequency range: DC / 15 Hz to 150 kHz
For each wire the coupling network for powerline conductors is made of a serious connection of a resistor and a capacitor. Coupling networks of each wire are connected to establish the coupling network of the corresponding Mtype.
Model
Frequency Range
Test Level
Port
Connectors
Schlöder CNxx Coupling Network Series Product Description
The value of the capacitor is C = 1,0 µF, the value of the resistor is R = 100 x n Ω, where n is the number of the wires (n ≥ 2). Values of capacitor and resistor shall match with a limiting deviation of 1 %. For DC tests the 1,0 µF capacitors shall be short circuited. For safety reasons coupling networks M2 and M3 are separated units for DC tests and AC tests. Short circuiting the capacitor by mistake while an alternating current is applied inevitably destroys the coupling network.
Each connection which is not under test must be grounded (SW2). For this reason an isolated BNC jumper plug is included.
Coupling networks for communication lines
For balanced communication lines and similar lines a "T" network is used.
The "T" network is made of capacitors ( C = 4,7 µF), resistors ( R = 200 Ω) and inductances (L = 2 x 38 mH / bifilar winding). All components shall match with a limiting deviation to ensure that there is no significant reduction of the differential to common mode conversion loss of the EUT. For DC tests the capacitors shall be short circuited.
Each connection which is not under test must be grounded (SW2). For this reason an isolated BNC jumper plug is included.
Schlöder CNxx Coupling Network Series Resources
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