Schneider MA-0185-100 Coaxial Line Tap

The Schneider Electric MA-0185-100, also cataloged as the MA0185100 Line Tap, operates as a dedicated hardware component for high-frequency signal distribution within coaxial cable networks. The hardware drops directional RF signals from primary network trunks to localized node interfaces, preserving impedance matches and balancing attenuation profiles across the high-frequency communications bus.

Hardware Specifications

Schneider Electric Deterministic Network Architecture

• Profinet / EtherNet/IP Deterministic Networks Integration: In legacy carrier networks integrated with Profinet / EtherNet/IP deterministic networks via routers, this tap manages physical layer RF signals. The 100 kHz to 30 MHz frequency range lets deterministic token-passing communication layers pass seamlessly through the drop channels without adding transit delay.
• Backplane Bus and Signal Matching: The hardware provides passive matching to prevent data corruption. A 26 dB minimum trunk return loss maintains line impedance boundaries across the coaxial run, shielding adjacent backplane bus loops from signal reflections or degradation during online data transfers.

Frequently Asked Questions

Q: How does the 75 Ohm characteristic impedance handle line reflections within a 30 MHz network?

A: The tap is constructed to maintain a strict 75 Ohm internal impedance configuration across its active ports. This geometry achieves a high trunk return loss of 26 dB minimum, absorbing high-frequency waves and preventing signal distortions from corrupting data packets.

Q: Can this line tap be installed or swapped while high-frequency data traffic is active on the trunk line?

A: No. Unseating or breaking the connections on the primary trunk loops drops the RF link for all downstream equipment. Component swaps must occur during scheduled downtime unless the network run is isolated by a dedicated parallel bypass switch.

Field Installation Guidelines

• Chassis Layout Alignment, Clearance Constraints, and Mechanical Seating: Secure the small 0.05 kg enclosure onto the backplate or local distribution rail using appropriate mounting brackets. Ensure the coaxial line taps are positioned cleanly within the enclosure layout to avoid sharp cable bend radiuses that could distort the internal 75 Ohm impedance profile.
• Conductor Separation, Wireway Constraints, and Shield Grounding: Route the 75 Ohm coaxial network cables through dedicated communication channels completely isolated from high-potential AC power drops or variable speed motor drives. Ensure the external coaxial shield layer grounds firmly to the network tap casing, linking back to the master copper earth rail to protect the 14 dB signal drops from high-frequency ambient noise.