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DS3800HCVA1G - Digital to Analog Output Converter Board is available in stock which ships the same day.
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FUNCTIONAL DESCRIPTION:
DS3800HCVA1G is a Digital to Analog Output Converter Board manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The Digital-to-Analog Output Converter Board performs digital-to-analog signal conversion to interface a microprocessor-based control system with analog actuators and process devices. It receives parallel or serial digital command inputs from the system controller and converts them into proportional analog voltage or current signals using high-resolution DAC (Digital-to-Analog Converter) circuits.
The board integrates precision reference sources and signal conditioning stages, including operational amplifiers for buffering, filtering, and scaling to maintain signal integrity and stability. Output range selection (e.g., 0�10 V or 4�20 mA) is accomplished through configurable jumpers, and calibration is fine-tuned via multi-turn trimmer resistors. Two DC-to-DC isolated power supply regulators provide regulated low-voltage rails for the analog and digital sections, ensuring noise immunity and power stability. The board features LED indicators for status and diagnostic purposes and includes multiple front-access connectors for signal I/O and field wiring. Typical applications include closed-loop control of turbine fuel valves, actuators, and other analog process elements requiring precise, real-time control in GE Mark IV Speedtronic systems.
OPERATION:
The board operates by receiving digital command signals from the GE Mark IV Speedtronic control processor via the system backplane. These digital signals represent setpoints or control instructions for analog-driven devices such as fuel valves, actuators, or servo mechanisms. The board�s digital-to-analog converter (DAC) circuitry converts these binary or parallel digital values into proportional analog voltage or current outputs.
Once converted, the analog signals pass through signal conditioning stages, including buffering, amplification, and filtering, to ensure stability, linearity, and noise immunity before reaching the field devices. Output ranges are configurable through jumpers and fine-tuned via trimmer resistors to match the required system specifications (e.g., 0�10 V or 4�20 mA). On-board DC-to-DC regulators supply stable, isolated voltages to the digital and analog sections, maintaining consistent performance under variable load and environmental conditions. LEDs provide operational status indication, enabling diagnostics and verification of board functionality during system operation.
COMPATIBILITY:
The output stage of the DS3800HCVA provides isolated and conditioned analog signals, typically in voltage (0�10 V) or current (4�20 mA) ranges, suitable for driving actuators, servo valves, and other analog control elements. Power requirements are met through regulated DC supplied from the backplane, with on-board DC-to-DC converters providing stable, isolated operating voltages for the analog and digital sections. Mechanical compatibility is maintained through the standard Mark IV form factor and keyed edge connectors, allowing direct insertion into the designated rack slot.
WOC maintains the largest inventory of OEM replacement parts for GE Speedtronic Gas Turbine Control Systems, ensuring that our clients have access to high-quality, genuine components whenever needed. In addition to supplying unused OEM parts, we also offer comprehensive repair services for faulty boards, as well as reconditioned and rebuilt boards, all of which are backed by a full warranty to guarantee performance and reliability.
Our team of skilled engineers and automation specialists is available 24/7 to provide technical support, advice, and assistance with all your OEM and control system requirements. Whether you need parts for immediate replacement, system upgrades, or troubleshooting, WOC�s experts are ready to assist you with prompt, professional service. For detailed pricing, availability, or repair inquiries, please reach out to our team via phone or email, and we will ensure a quick and efficient response to meet your operational needs.
What is the function of the Digital-to-Analog Output Board?
It converts digital signals from the control processor into precise analog outputs, enabling accurate control of field devices such as actuators, servo valves, and other analog control elements.
How does the board interface with the control system?
The board connects directly to the system backplane using standardized Mark IV connectors. It receives digital command data from the processor and transmits calibrated analog signals to the output stage.
What types of analog outputs are provided?
Outputs typically include voltage signals (0–10 V) and current signals (4–20 mA). The output range is configurable through jumpers and can be fine-tuned via trimmer resistors.
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