The Spectracom 8140VT-46-00-00 is a precision timing and frequency distribution amplifier that conditions an input frequency reference and distributes it to multiple remote locations via coaxial cable networks. This device eliminates the need for dedicated time bases or reference oscillators at each remote site by accepting standard input frequencies and providing selectable outputs through both front and rear panel connectors.
Technical Specifications
Input Signal:
• Input frequency: 10 MHz standard (5.0, 1.0, or 0.1 MHz options available)
• Input signal level: 0.25 to 3.0 Vrms into 50 Ω load
• Input impedance: 50 Ω
Output Signal:
• Front panel selectable frequencies: 10, 5.0, 1.0, 0.5, or 0.1 MHz
• Standard sine-wave output (>100 kHz): 1.7 V peak-to-peak into 50 Ω load
• Standard TTL output (<100 kHz): TTL levels
• Option 8140TTL: 3.4 V rectangular positive pulses from 50 Ω source
• Rear panel outputs (4x BNC): 10 MHz sine-wave, 0.5 Vrms, 50 Ω, with +12 V dc superimposed for Line Tap module powering
• Harmonic distortion: −40 dB minimum (sine-wave output)
• Output phase noise: <−130 dBc/Hz at 1 kHz offset from 10 MHz carrier
Signal Integrity:
• Crosstalk isolation: 80 dB minimum
• Phase lock indicator: LED illuminates when phase-locked to reference
• Fault indication: Output Fault Lamp for signal loss detection at any output connector
• Audible alarm available (Option 20)
Power:
• Supply requirement: +12 Vdc at 110 mA
– Key Features
• Pushbutton-selectable output frequency (10 MHz, 5 MHz, 1 MHz, 500 kHz, 100 kHz)
• Four rear-panel 10 MHz outputs with integrated +12 V dc power delivery for remote modules
• Phase-lock status indication via internal jumper configuration (W6 to W5)
• Low-noise sine-wave and TTL output options
• High crosstalk rejection for multi-channel distribution
– Compatibility & Integration
Designed to interface with Spectracom Line Tap modules for distributed signal delivery to remote timing references across networked installations.
