MOL25T Optical Link – High-Performance Analog Signal Transmission   Reliable RF Signal Transmission in Harsh Electromagnetic Environments The MOL25T Optical Link by Montena is a precision-engineered, shielded optical transmission system designed for real-time measurement of electric signals from DC up to 25 MHz. It enables secure, interference-free data transmission over long distances and is optimized for harsh electromagnetic environments. Key Features & Benefits Wide Frequency Bandwidth: DC to 25 MHz for accurate signal transmission. Dual-Channel System: Two independent 1 M Ω BNC inputs for versatile connectivity. High EMI Immunity: Resistant to electric fields >500 kV/m (MIL-STD 461 RS105). Remote-Selectable Attenuation: 1:1, 10:1, 100:1 attenuation settings for optimized dynamic range. Galvanic Isolation: Ensures safe operation in high-voltage environments. Long-Distance Optical Transmission: Transmits signals over 1 km without signal degradation. Battery-Powered Operation: 20+ hour battery autonomy with standby mode. Compact & Lightweight: Shielded for minimal RF interference. Remote Control & Configuration: Supports FibREmote software for PC and Android. Technical Specifications System Performance Specification Details Bandwidth DC to 25 MHz Flatness ±0.5 dB DC Gain Accuracy ±1.5% DC Offset ±1 mV Measurement Ranges 1 V, 10 V, 100 V (remotely selectable) Input Impedance 1 MΩ Output Impedance 50 Ω Dynamic Range 65 dB Sampling Rate 75 MS/s Propagation Delay Typ. 4 µs + fiber delay Maximum Link Distance ≥ 1 km Optical Transmitter (MOL25T-TX) Specification Details Number of Channels 2 Input Attenuation 1:1, 10:1, 100:1 (remotely selectable) Max. Input Voltage 250 Vp Battery Autonomy 20+ hours (standby: 1 week) RF Input Connectors 2 x BNC female (option: SMA female) Operating Temperature -10 °C to +55 °C Dimensions 113 x 64 x 41 mm Weight 380 g Optical Receiver (MOL25T-RX & MOL25T-M-RX) Specification Details Number of Channels 2 RF Output Connectors BNC / 50 Ω or SMA / 50 Ω Optical Connector FC/APC Battery Autonomy 20+ hours (standalone) Operating Temperature -10 °C to +55 °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   MOL25T-B Single channel point-to-point optical link DC – 25 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)   MOL25T-S Single channel point-to-point optical link DC – 25 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) MOL25T-MB Single channel optical link for chassis MOL-MF-xx, DC - 25 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)   MOL25T-MS Single channel optical link for chassis MOL-MF-xx, DC - 25 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 fiber cable (signal and control), diameter:2.8mm Available lengths are 10, 20, 50, 100, 200, 500, 1000m, xxx = the cable length   FCLBxxxRU Ruggedized single fiber cable (signal and control), diameter: 7.5mm 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 remote amplifier and transmit antenna to 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.
• 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.