GW-Instek-3 M Hz-Function-Generator-GW-Instek-GFG-8219A-Function-Generator-0-3 Hz-to-3 M Hz-Frequency-Range-10 Vpp-Amplitude-Sine-Triangle-Square-Ramp-Output-Waveforms-6-Digit-LED-Display-115-230 Vac-Power-Source-TTL-CMOS-Output-External-Voltage-Controlled-Frequency-VCF-Function-Duty-Cycle-Control-with-Signal-Inversion-Capability-Variable-DC-Offset-Control-Two-Step-20d Bx 2-&-Variable-Attenuator-Built-In-6-Digit-Counter-with-INT-EXT-Function-up-to-150 M Hz-High-Resolution-Lin-Log-S