The Ametek / Elgar / California Instruments 850T-3 is a precision oscillator module engineered as a plug-in master oscillator for Invertron® AC Power Sources in the T Series and XP-Series product lines. It generates the drive signal for power amplifiers with crystal-controlled frequency synthesis, delivering stable reference signals across a wide operating range.
– Technical Specifications
Frequency Range: 45 Hz to 10 kHz
Frequency Resolution:
• X1 Range: 0.01 Hz steps (0.01 Hz to 99.99 Hz)
• X10 Range: 0.1 Hz steps (0.1 Hz to 999.9 Hz)
• X100 Range: 1 Hz steps (1 Hz to 9999 Hz)
Frequency Accuracy: 0.001%
Frequency Stability: Crystal-controlled synthesized frequency with 5 ppm/°C average stability
Phase Configuration: Three-phase output with optional circuit boards available for two-phase or three-phase configurations
Phase Accuracy:
• 1° typical (multi-phase)
• 90° ±1° from 45 Hz to 5 kHz; ±2° from 5 kHz to 10 kHz (two-phase)
• 120° ±1° from 45 Hz to 5 kHz; ±2° from 5 kHz to 10 kHz (three-phase Wye, Phase C leading Phase A)
Input Power: +25 VDC and −25 VDC at 0.040 A
– Key Features
• Front panel amplitude control with optional remote programming via voltage (RPV) or resistance (RPR)
• Low output distortion design
• External synchronization input for frequency and phase angle locking
• Soft-start feature that gradually ramps output amplitude from zero during power-on or post-shutdown recovery
• Automatic frequency limit shutdown to prevent operation outside associated power source specifications
• Programmable waveform option
• Integrated measurement capabilities: output voltage, current, frequency, phase angle, true power, apparent power, and power factor
• Digital phase control maintains constant electrical angles independent of frequency
– Typical Applications
Precision frequency reference generation for power amplifier systems requiring stable, low-distortion drive signals across industrial and laboratory test environments.
– Compatibility & Integration
Designed exclusively for integration with Invertron® AC Power Sources (T Series and XP-Series). The module derives operational power from the host system and must be installed as a plug-in component.
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