The Optoelectronics 3000A-Plus is a precision frequency counter that measures signals from 10 Hz to 3 GHz with configurable resolution up to 12 digits. Built for telecommunications, R&D, and electronics testing, it delivers accurate signal analysis across dual input channels—one optimized for low-frequency signals and one for high-frequency operation to 3 GHz. The instrument combines selectable input impedance, multiple measurement functions, and optional OCXO timebase upgrades to meet demanding laboratory and field requirements.
Technical Specifications
Frequency Measurement
• Range: 10 Hz to 3 GHz
• Resolution: Up to 12 digits (configurable by gate time)
• Accuracy: Specified by OCXO or TCXO timebase options
Input Channels
• Channel A (Low Frequency): 10 Hz to specified upper limit
– Input Impedance: 1 MΩ || <20 pF or 50 Ω (selectable)
– Connector: BNC
• Channel B (High Frequency): Up to 3 GHz
– Input Impedance: 50 Ω
– Connector: BNC
Timebase
• Standard: High-stability crystal oscillator
• Optional: Oven Controlled Crystal Oscillator (OCXO) for enhanced accuracy
Power Requirements
• Input: 100–240 VAC, 50/60 Hz
Display
• Type: High-resolution LCD
• Information: Frequency, units, timebase settings, and measurement parameters
– Key Features
• Dual-channel architecture supports simultaneous measurement across low and high frequency domains
• Frequency, period, ratio, and totalize measurement functions
• Advanced triggering and arming options for event capture
• Selectable input impedance on Channel A accommodates both high-impedance and 50 Ω sources
• User-friendly front panel with intuitive controls
– Typical Applications
• Signal characterization in telecommunications systems
• Precision frequency validation in research and development
• Component and circuit testing in electronics manufacturing
• Field measurements requiring portable, benchtop instrumentation
– Compatibility & Integration
• GPIB (IEEE-488) interface for remote control and automated test systems
• RS-232 serial communication for instrument control
