Instek GFG-8216A Function Generator

The Instek GFG-8216A is a compact analog function generator delivering precise waveform synthesis across a 0.3 Hz to 3 MHz range. Built for laboratory and field service work, it combines straightforward controls with integrated measurement capability, offering sine, triangle, square, ramp, TTL, and CMOS outputs with selectable sweep modes and modulation flexibility.

Technical Specifications Frequency and Waveform Generation

Frequency range: 0.3 Hz to 3 MHz

Waveforms: Sine, triangle, square, ramp, TTL output, CMOS output

Sweep modes: Logarithmic and linear

Duty cycle: Adjustable 80% to 20% up to 1 MHz with signal inversion

Square wave rise/fall time: 120 ns typical

Square wave symmetry: 100 ns at maximum output into 50Ω load Output Characteristics

Amplitude: Greater than 10 Vpp into 50Ω load

Output impedance: 50Ω ±10%

Attenuation: Two-step (-20 dB × 2) plus variable attenuator

DC offset: Variable, -5 V to greater than 5 V into 50Ω load

Distortion: Low distortion across waveform set Modulation and Control

AM and FM modulation modes with internal or external control

Voltage controlled frequency (VCF): External modulation input to 15 V DC Integrated Frequency Counter

6-digit LED display

Internal measurement and external function to 150 MHz

Sensitivity: 35 mVrms (5 Hz to 100 MHz); <45 mVrms (100 MHz to 150 MHz)

Counter input impedance: 1 MΩ // 150 pF

Time base accuracy: ±20 ppm at 23°C ±5°C after 30-minute warm-up

Resolution: 100 nHz minimum for 1 Hz measurement; 1 Hz minimum at 100 MHz Power and Environment

Supply: AC 115 V / 230 V ±15%, 50/60 Hz

Dimensions: 251 mm W × 91 mm H × 291 mm D

Weight: 2.1 kg

Operating temperature: 0°C to 40°C

Storage temperature: -10°C to 70°C

Relative humidity: 80% maximum

Key Features

Fast square wave edges enable precision timing and trigger applications

Programmable duty cycle supports custom pulse generation up to 1 MHz

Independent attenuator stages reduce measurement errors across dynamic range

Built-in counter eliminates need for external frequency measurement equipment

VCF input allows external control of output frequency for swept testing

Typical Applications Component characterization, circuit timing validation, audio equipment testing, signal integrity analysis, prototype validation, educational laboratory work.

Compatibility & Integration Standard 50Ω output impedance ensures compatibility with RF test systems, oscilloscope inputs, and amplifier chains. TTL and CMOS outputs support direct logic circuit interfacing.