Based on the part number provided, the **M2RT-62-R2** is a specialized high-performance coaxial microwave switch, typically manufactured by **Radiall**. These components are designed for RF (Radio Frequency) signal routing in demanding environments like aerospace, telecommunications, and defense. --- ### 1. General Specifications The "M2RT" series generally refers to a **RAMSES** (Radiall Modular System for Electromechanical Switches) miniature SPDT (Single Pole Double Throw) switch. | Parameter | Typical Value / Description | | :--- | :--- | | **Switch Type** | SPDT (1 Input, 2 Outputs) | | **Technology** | Electromechanical (Coaxial) | | **Actuator Type** | Latching (Self-cut-off) | | **Frequency Range** | DC to 18 GHz or 26.5 GHz (model dependent) | | **Impedance** | 50 Ohms | | **Connector Type** | SMA Female | --- ### 2. Breakdown of Part Number Features The suffix codes define the specific electronic and mechanical behavior: * **M2RT:** Product line family (RAMSES Miniature SPDT). * **62:** Usually indicates the frequency range and actuator voltage. Typically, "6" refers to high frequency (18+ GHz) and "2" refers to 28V DC operation. * **R2:** This indicates the inclusion of specific features, often **Internal Terminations** (50Ω loads on unused ports) or a specific **TTL Driver** interface. --- ### 3. Key Electronic Components The internal electronics of the M2RT-62-R2 consist of three main subsystems: #### A. The Actuator (Latching) Unlike "failsafe" switches that require constant current to stay in one position, a **latching** switch uses a permanent magnet and a dual-coil system. * **Efficiency:** It only consumes power during the switching transition (approx. 15-50ms). * **Safety:** If power is lost, the switch remains in its last commanded state. #### B. The RF Cavity * **Contact Mechanism:** High-precision gold-plated rockers that physically move to bridge the center conductors of the SMA connectors. * **Isolation:** Designed to prevent signal leakage between the two output ports (typically >60dB isolation). #### C. Control Interface (The "R2" logic) * **Voltage:** Optimized for **28V DC** (standard for aviation/military). * **Suppression Diodes:** Includes internal diodes to suppress the Back-EMF (voltage spikes) generated by the inductive coils when power is cut. * **Indicator Circuit:** Often includes auxiliary contacts that allow an external system to electronically verify which port is currently active. --- ### 4. RF Performance Table | Frequency (GHz) | Insertion Loss (dB) | Isolation (dB) | V.S.W.R | | :--- | :--- | :--- | :--- | | DC - 3 | < 0.20 | > 80 | < 1.20 | | 3 - 8 | < 0.30 | > 70 | < 1.30 | | 8 - 12.4 | < 0.40 | > 60 | < 1.40 | | 12.4 - 18 | < 0.50 | > 60 | < 1.50 | --- ### 5. Application Examples * **Redundancy Switching:** Switching between a primary and backup transmitter. * **ATE (Automated Test Equipment):** Routing signals from a Device Under Test (DUT) to various measurement instruments (Spectrum Analyzers, Power Meters). * **Satellite Communications:** Signal routing in ground stations.