Instek GFG-8219A Function Generator

The Instek GFG-8219A is a versatile analog function generator delivering precision waveforms across 0.3 Hz to 3 MHz for audio response testing, vibration analysis, servo evaluation, and ultrasonic applications. This instrument combines a main signal output exceeding 10 Vpp into 50 Ω with a built-in 6-digit frequency counter spanning 5 Hz to 150 MHz, offering engineers integrated signal generation and measurement in a single platform.

## Technical Specifications

**Frequency Range & Output**
• 0.3 Hz to 3 MHz across 7 ranges
• Main output: >10 Vpp into 50 Ω ±10%
• DC offset: −5 V to +5 V
• Output impedance: 50 Ω ±10%

**Waveforms**
• Sine, triangle, square, ramp, TTL, and CMOS
• Sine distortion: <1% (0.3 Hz to 200 kHz); <0.3 dB flatness (0.3 Hz to 300 kHz); 98% (0.3 Hz to 100 kHz); >95% (100 kHz to 3 MHz)
• Square symmetry: ±2% (0.3 Hz to 100 kHz); rise/fall time 3 Vpp, <25 ns rise/fall, 20 TTL loads fan-out
• CMOS: 4 Vpp ±1 Vpp to 14.5 Vpp ±0.5 Vpp (adjustable), <120 ns rise/fall

**Built-in Counter**
• 6-digit display; 5 Hz to 150 MHz range
• High resolution measurement of internal or external signals
• External input: ≤30 V AC

## Key Features

• 6-digit LED display for frequency readout
• External signal measurement capability (counter input)
• Continuously adjustable duty cycle with polarity inversion
• Dual output capability for simultaneous testing

## Typical Applications

• Audio and vibration system characterization
• Servo loop testing and evaluation
• Ultrasonic device excitation
• Frequency response measurement

## Compatibility & Integration

All connectors are BNC: main output, GCV, VCF input, external modulation, counter input, TTL, and CMOS outputs. Power requirement: 100–240 V AC.