TruDAC

Cut the Noise. Stay in Control.

TruDAC is a digital drive interface that replaces the traditional analog drive connections by breaking the ground path between your controller and amplifier. TruDAC simplifies, isolates, and future-proofs your vibration system. Convert from digital to analog in order to reduce noise, support longer cable runs, and detect connection issues.

Built for modern test labs, TruDAC delivers:

• 24-bit output resolution
• Up to 216 kHz sample rate
• ±10 V output range
• <-100 dB total harmonic distortion
• Improved high-frequency noise immunity; uses balanced differential signaling over twisted-pair cabling
• Improved low-frequency (ground-loop) noise immunity with a transformer-coupled interface
• Support for longer cable lengths between the amplifier and controller without control signal degradation
• Robust locking connectors
• Flexible system-level integration

TruDAC supports one or two drive outputs through one digital link. It detects disconnected or broken cables between the amplifier and controller; the amplifier input remains grounded until the digital receiver locks onto the control signal. In the future, TruDAC will enable direct digital amplifier control instead of A/D conversion.

The Future Path To Power

The world has gone digital, yet many vibration labs still rely on analog drive paths that convert digital signals to analog, only to re-digitize them via the amplifier.

TruDAC is the bridge to a better approach. It provides a clean, isolated digital drive signal and paves the way for full digital amplifier integration.

Direct Control

In the future, TruDAC enables direct digital amplifier control, instead of A/D conversions.

Why TruDAC?

• Removes analog ground loop noise
• Transformer-coupled digital input
• Robust detection of cable issues before test starts
• Compatible with 2-channel analog outputs (±10 V)
• 32-bit resolution, 216 kHz sample rate
• Designed for aerospace, defense, and high-integrity testing

Solutions for Today and Beyond

Most amplifiers still convert to analog at the amplifier input, and TruDAC is built for today and beyond. When amplifier manufacturers support digital input directly, the entire signal path will remain digital, eliminating unnecessary conversions.

Use TruDAC For

• Cleaner, more reliable drive signals
• Lower noise floors
• Ground loop elimination
• A future-forward test setup ready for digital amp integration

Ground-Loop Noise

TruDAC breaks the physical ground connection between the controller and amplifier. It uses transformer-coupled digital input and fully isolated analog outputs to eliminate ground loop-induced noise and signal degradation.