The Tektronix CFG250 is a versatile function generator engineered for educational, service, and general-purpose signal sourcing across audio, ultrasonic, and servo system testing and calibration. It generates sine, square, triangle, sawtooth, and TTL-compatible waveforms from 0.2 Hz to 2 MHz with exceptional control over signal characteristics. The main output delivers 0–20 Vp-p into open circuit or 0–10 Vp-p into 50 Ω load, with a secondary range of 0–2 Vp-p and 0–1 Vp-p respectively. Sine wave distortion remains below 1% from 10 Hz to 100 kHz into 50 Ω termination, while triangle linearity exceeds 99% across 20 Hz to 200 kHz and maintains 97% to 2 MHz. Square waves exhibit 100 ns rise/fall times.
Technical Specifications
• Frequency Range: 0.2 Hz to 2 MHz
• Waveforms: Sine, Square, Triangle, Sawtooth, TTL
• Sine Wave Distortion: 99% (20 Hz to 200 kHz); 97% (200 kHz to 2 MHz)
• Square Wave Rise/Fall Time: 100 ns
• Main Output Amplitude: 0–20 Vp-p (open circuit); 0–10 Vp-p (50 Ω load)
• Attenuated Output: 0–2 Vp-p (open circuit); 0–1 Vp-p (50 Ω load)
• Output Impedance: 50 Ω
• Duty Cycle Range: 1:1 to 100:1 continuously variable; minimum 5:1 change
• DC Offset: Continuously variable with center-zero function
• Synchronization Output Level: >3 Vp-p
• Sweep Rate: 0.5 Hz to 50 Hz continuously variable
• Sweep Width: 1:1 to 100:1
• VCF Input Sensitivity: 100:1 minimum (0 to +10 V DC)
– Key Features
• Waveform inversion at main output
• Internal and external sweep modes with linear control
• Frequency modulation via external voltage source
• DC offset centering capability
• Symmetry and duty cycle manipulation across all waveform types
– Typical Applications
• Audio system testing and calibration
• Ultrasonic equipment development
• Servo system characterization
• Educational signal generation demonstrations
– Compatibility & Integration
• Locking multi-position handle enables stacking with CFG250 series instruments
• TTL-compatible output for digital system interfacing
