The DS20NATOG1 (NATO board) is a specialized voltage feedback scaling board engineered to precisely attenuate both AC and DC voltages from an SCR bridge, enabling accurate bridge voltage feedback for industrial control systems. Designed for seamless integration, it operates in tandem with a VME backplane and a gate distribution and status board to deliver reliable performance in high-voltage industrial environments.

The NATO board features five identical series-connected precision resistor strings, purpose-built to handle high-voltage inputs:
1,Three strings dedicated to the three AC phases of the SCR bridge
2,Two additional strings for positive and negative DC bus voltage monitoring
Each resistor string is highly configurable via three distinct input stab connectors and two wire jumpers, supporting attenuation for input voltages ranging from 1200V to 6900V (including 2200V, 3300V, and 4200V options).