MOL500T Optical Link – High-Performance Analog Signal Transmission Reliable RF Signal Transmission in Harsh Electromagnetic Environments   The MOL500T Optical Link by Montena is a high-performance, shielded optical transmission system designed for real-time measurement of electric signals from DC up to 500 MHz. This system is engineered to operate in harsh electromagnetic environments, ensuring precision, reliability, and galvanic isolation for safe operation in high-voltage and RF testing applications. Key Features & Benefits Wide Frequency Bandwidth: DC to 500 MHz, ensuring accurate transmission of low-frequency and high-frequency signals. Remote-Selectable Attenuation:1:1, 10:1, 100:1 attenuation settings for optimized dynamic range. Remote-Selectable Impedance: 50 Ω or 1 MΩ, asses ability to use as an impedance transformer.  High Immunity to External Fields: Designed to withstand electric fields > 500 kV/m (MIL-STD 461 RS105). Optical Signal Transmission: Eliminates ground loops and interference for clean, precise measurements. Automatic Optical Loss Compensation: Maintains consistent signal integrity despite varying optical losses. Battery-Powered Operation: 50-hour battery autonomy with a standby mode lasting up to 5 months. Remote Control & Supervision: Configurable using FibREmote software (PC & Android) or API commands. Compact & Shielded Design: Lightweight, durable construction for field and lab applications. Technical Specifications System Performance Specification Details Bandwidth DC to 500 MHz Flatness ±1 dB Input Impedance 1 M Ω or 50 Ω (remotely selectable) Output Impedance 50 OΩ Maximum Output Dynamic ±0.7 Vp Instantaneous Dynamic Range 58 dB Output Noise Floor -139 dBm/Hz Output Noise Level 0.6 mV (typical) Optical Loss Compensation Automatic Laser Diodes Wavelength (TX/RX) 1310 nm / 1550 nm Maximum Link Distance ≥ 1 km Optical Transmitter (MOL500T-TX) Specification Details Input Attenuator Ratios 1:1, 10:1, 100:1 (remotely selectable) Input Impedance 1 MΩ or 50 Ω (remotely selectable) Max. Input Power (CW) 0.4 W (50 Ω input) Battery Autonomy 50 hours (standby ~5 months) Built-in Test Generator 500 Hz, 0–0.5 V bipolar square wave RF Input Connector BNC female (option: SMA female) Operating Temperature -10 °C to +50 °C Dimensions 99 x 64 x 41 mm Weight 380 g Optical Receiver (MOL500T-RX & MOL500T-M-RX) Specification Details RF Output Connector BNC or SMA female (50 Ω) Battery Autonomy 50 hours (standalone version) Optical Signal Wavelength 1550 nm Control Connector Mini-USB / USB Type A (chassis version) Operating Temperature -10 °C to +50 °C Dimensions 99 x 64 x 41 mm (standalone), 40 x 172 x 84 mm (chassis) Weight 380 g (standalone), 240 g (chassis version) System Configurations & Accessories The MOL500T is available as a standalone point-to-point link or as a modular chassis-based system for multi-channel applications. The system is delivered with Montena FibREmote software applications running on Windows PC and Android. These applications allow simple configuration and monitoring of Montena's fibre optic links. Configurations can be stored and recalled at any time to facilitate the configuration of large measurement setups.   MODEL DESCRIPTION   MOL500T-B Single channel point-to-point optical link DC – 500 MHz, BNC inputs/ outputs, one optical transmitter on battery, one optical receiver on battery, two battery chargers 90-264 V, one FibREmote software for PC and Android devices, and one carrying case (no Fiber included, list separately)   MOL500T-S Single channel point-to-point optical link DC – 500 MHz, SMA(f) inputs/ outputs,  one optical transmitter on battery, one optical receiver on battery, two battery chargers 90-264 V, one FibREmote software for PC and Android devices, and one carrying case (no Fiber included, list separately) MOL500T-MB Single channel optical link for chassis MOL-MF-xx, DC - 500 MHz, BNC inputs / SMA(f) outputs, one optical transmitter on battery, one optical plug-in receiver module and one battery charger 90-264 V (no Fiber included, list separately)   MOL500T-MS Single channel optical link for chassis MOL-MF-xx, DC - 500 MHz, SMA(f) inputs/outputs,  one optical transmitter on battery, one optical plug-in receiver module and one battery charger 90-264 V (no Fiber included, list separately) MOL-MF-10 Chassis 19" 2U for up to 10 plug-in receiver modules, 85 - 264 V, including one power supply cable, one USB cable and one FibREmote software for PC and Android. MOL-MF-1 Converter chassis for one plug-in receiver module, including one power supply adapter 100 - 230 V with 3 mains plugs for US/Japan, Europe and UK, one USB cable, and one FibREmote software for PC and Android. Enables 'stand-alone' operation of a plug-in receiver module. FCLBxxx Single fibre cable (signal and control), diameter: 2.8 mm Available lengths are 10, 20, 50, 100, 200, 500, 1000m, xxx = the cable length   FCLBxxxRU Ruggedized Single fibre cable (signal and control), diameter: 7.5 mm Available lengths are 10, 20, 50, 100, 200, 500, 1000m, xxx = the cable length   MOL-CRGDCDC Optional DC/DC charger for one transmitter or receiver module, Vin: 10-30 Vdc Enables long-term operation using an external 12V or 24V battery PULSELab  PULSELab software: The system is delivered with PULSELab, a montena pulse measurement software application.   PG100MV200P  Reference square pulse generator on battery, 5 kHz, 200 mVpp, SMA connector, with charger (110-240V)

Applications

• EMC Testing – Immune to high electromagnetic fields, ideal for MIL-STD 461 RS105 testing environments.
• RF Signal Transmission – Secure and interference-free transmission over long distances.
• Shielding effectiveness - run sweeps with a network analyzer controlling a remotoe amplifier and transmit antenna save time and make more measurements. 
• High-Voltage & Harsh Environments – Ideal for applications requiring electrical isolation in high-power systems.
• Hard-to-Reach Areas – Enables remote high-frequency signal monitoring over long distances or in restricted access zones.
• Synchronized Oscilloscope & DAQ Measurements – Allows for precise multi-location signal acquisition with fiber-optic isolation.
• Use as an Impedance transformer from 50 Ω to 1 MΩ
• Automotive & Aerospace Testing – Ensures reliable RF signal transmission in extreme environmental conditions.
• Medical Imaging & Diagnostics – Used in MRI rooms and other high-EMI medical environments for noise-free signal transmission.
• Satellite & Space Communications – Enables low-loss, interference-free RF data transmission for satellites and ground stations.
• Power Grid Monitoring & Substations – Provides safe, high-voltage isolation for grid monitoring and substation diagnostics.
• Broadcast & Live Event Production – Supports low-latency, high-frequency signal distribution for radio, TV, and live events.
• Quantum Computing & Research – Ensures secure, interference-free signal processing in quantum computing labs.
• Radar & Defense Systems – Enable secure, remote radar signal transmission in military and defense applications.
• Industrial Automation & Robotics – Provides reliable, high-speed data transfer in harsh manufacturing environments.
• Seismic & Geophysical Monitoring – Supports long-distance sensor data acquisition for earthquake detection, oil exploration, and environmental monitoring. 

Why Choose Absolute EMC?

Absolute EMC is the exclusive North American sales partner for Montena emc products, providing expert guidance, sales support, and after-sales service for the MOL500T Analog Optical Link. Contact us today for a quote or technical consultation.