Tektronix CFG253

Tektronix CFG253 Function Generator

The Tektronix CFG253 is a versatile function generator designed for producing a variety of waveforms, including sine, square, sawtooth (triangle), and TTL signals. It is particularly useful for testing and calibrating audio and ultrasonic equipment, servo systems, and digital circuits.

Key Features

• Frequency Range: 0.03 Hz to 3 MHz
• Waveforms: Sine, square, sawtooth (triangle), and TTL signals
• Amplitude Control: Variable amplitude control with a 20 dB attenuator
• DC Offset: Continuously variable DC offset from -10 V to +10 V (open circuit) and -5 V to +5 V (into 50 Ω load)
• Duty Cycle: Variable duty cycle with a minimum symmetry change of 5:1
• Sweep Function: Internal or external frequency sweep with a continuously variable sweep rate from 0.5 Hz to 50 Hz and a sweep width variable from 1:1 to 100:1
• TTL Signals: Standardized TTL signals unaffected by amplitude and DC offset controls
• Output Impedance: 50 Ω ±10%

Technical Specifications

• Sine Wave Distortion: <1% from 10 Hz to 100 kHz
• Sawtooth Linearity: ≥99% from 20 Hz to 200 kHz, ≥97% from 200 kHz to 3 MHz
• Square Wave Response: ≤100 ns rise/fall time, maximum output into 50 Ω load
• Main Output Amplitude: 0 to 20 V
• Safety and Compliance: Meets EN 61010-1, UL 1244, CSA 231, and 89/336/EEC for electromagnetic compatibility

Applications

• Product Design: Testing and calibrating audio and ultrasonic equipment, servo systems, and digital circuits
• Training and Education: Laboratory and research applications
• Manufacturing Production Test: Field repair and bench calibration
• Laboratory and Research: General-purpose waveform generation

Physical Characteristics

• Dimensions: 240 mm (9.46 in) width, 64 mm (2.53 in) height, 230 mm (9.0 in) depth
• Weight: 2.0 kg (4.4 lb)

Warranty and Support

• Warranty: One year warranty provided by Tektronix

References

1. Tektronix CFG253 User Manual - https://download.tek.com/manual/070836204.pdf
2. Tektronix CFG253 Function Generator Repair - https://www.eevblog.com/forum/repair/tektronix-cfg253-function-generator-repair/
3. Tektronix CFG250, CFG253, CFG280 Specifications - http://alphapribor.ru/upload/iblock/f86/f86355c32ef6a234d9296b6eb96435b2.pdf
4. Tektronix CFG253 Function Generator Datasheet - https://www.tek.com/en/datasheet/cfg253-cfg280
5. Tektronix CFG253 Function Generator Overview - https://dispo.umich.edu/tektronix-cfg253-function-generator.html