The Yokogawa FG420 is a dual-channel arbitrary/function generator delivering precision signal synthesis from 0.01 µHz to 30 MHz. Engineered for electronic test, development, and circuit validation, the FG420 generates sine, square, pulse, ramp, noise, DC, and arbitrary waveforms with 16-bit amplitude resolution at 120 MS/s sampling. Isolated outputs enable safe development of floating circuits, motor drives, inverters, and power supplies. Output reaches 20 Vp-p with square wave rise/fall times of 17 ns or less and overshoot below 5%. The instrument supports continuous, modulation (AM, FM, FSK, PM, PWM), sweep, burst, and sequence operating modes. Arbitrary waveforms store up to 512 K words per channel. Synchronization of up to six units provides 12 coordinated output channels. A 3.5″ LCD display combined with GPIB and USB interfaces enables bench operation and remote control. Compact dimensions of 216 mm width × 88 mm height × 332 mm depth and 2.1 kg weight suit laboratory and production environments. AC input 100–230 V at 50/60 Hz; power consumption 75 VA maximum.
Technical Specifications
• Channels: 2
• Frequency range (sine): 0.01 µHz to 30 MHz
• Output waveforms: Sine, square, pulse, ramp, parameter-variable, noise (Gaussian), DC, arbitrary
• Amplitude resolution: 16 bits
• Sampling rate: 120 MS/s
• Maximum output voltage: 20 Vp-p
• Square wave duty cycle (normal): 0.01% to 99.99%
• Square wave duty cycle (extended): 0.00% to 100.00%
• Square wave rise/fall time: ≤17 ns
• Square wave overshoot: ≤5%
• Arbitrary waveform memory: Up to 512 K words per waveform
• Burst capability: Auto, trigger, gate, and triggered gate modes with 0.5 to 999,999.5 cycle marking
• Modulation types: AM, FM, FSK, PM, PWM
• Sweep modes: Linear and logarithmic with continuous, single, gated single, and shuttle options
• Trigger sources: Internal, external, manual
• Display: 3.5″ LCD
• Synchronization: Up to 6 units for 12 coordinated channels
• Dimensions: 216 mm (W) × 88 mm (H) × 332 mm (D)
• Weight: ~2.1 kg
• Power input: AC 100–230 V ±10% (250 V max), 50/60 Hz ±2 Hz
• Power consumption: 75 VA maximum
– Key Features
• Dual isolated outputs for floating circuit applications
• Sweep, burst, and sequence operation for complex signal scenarios
• Modulation capabilities across five modulation types
• Sequence edit software for automation and repetitive testing
• Sub/sync output terminal for channel coordination
• External modulation and trigger inputs
• 10 MHz external frequency reference support
– Typical Applications
• Motor drive and inverter development
• Power supply testing and validation
• Floating circuit signal generation
• Modulated signal research
• Parametric and time-sweep measurements
– Compatibility & Integration
• GPIB and USB interfaces for instrument control and data transfer
• Compatible with standard test automation frameworks
• Supports external triggering and frequency synchronization
