The Microchip/TrueTime 86-391-16 is a precision frequency module that generates stable reference signals at 1 MHz, 5 MHz, and 10 MHz. Built for applications requiring high-accuracy timing and synchronization, this module delivers dependable frequency outputs for telecommunications, metrology, and calibration equipment.
Technical Specifications
Frequency Outputs
• 1 MHz
• 5 MHz
• 10 MHz
Auxiliary Reference Input
• Input frequency: 1 MHz, 5 MHz, and 10 MHz sine-wave
• Amplitude: 1 Vp-p to 10 Vp-p at 1 kΩ to ground; 1 Vp-p to 3 Vp-p at 50Ω to ground
• Impedance: Configurable 1 kΩ or 50Ω to ground
• Connector: BNC female
Power Requirements
• 90–260 Vac, 47–440 Hz
Alarm Output
• Type: Open collector
• Maximum rating: 25 V / 50 mA
• Connector: BNC female
Physical Form Factor
• 1U rack-mount configuration compatible with standard 19″ (48.26 cm) EIA rack systems
Environmental Operating Conditions
• Temperature: 0°C to +50°C
• Storage temperature: –55°C to +85°C
• Humidity: 95%, non-condensing
– Key Features
• Multi-frequency output capability supporting 1 MHz, 5 MHz, and 10 MHz
• Configurable input impedance for flexible system integration
• Auxiliary reference input accepts sine-wave signals across the full output frequency range
• Open-collector alarm output for system monitoring and fault detection
• Standard rack-mount integration for laboratory and field installations
– Typical Applications
• Telecommunications timing synchronization
• Precision metrology and standards laboratories
• Test equipment calibration
• Frequency reference systems requiring multiple output bands
– Compatibility & Integration
The module integrates into systems requiring precise frequency standards. Host system compatibility depends on interface capabilities, particularly BNC connector availability and impedance matching at 1 kΩ or 50Ω configurations.
