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SPECIFICATIONS:
Part Number: DS3800NTDG
Manufacturer: General Electric
Series: Mark IV
Product Type: Digital Display Card
Input Signal Type: Digital / TTL / RS-232 / RS-485
Display Type: 7-Segment
Display Digits: 4 to 16 digits
Power Requirements: +5 V dc
Power Supply: +5V, +12V
Power supply voltage: 24 V dc
Operating Temperature: -20°C to +70°C
Size: 15.7 cm high x 18.5 cm
Weight: 0.5kg
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
DS3800NTDG is a Digital Display Card manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. It serves as an interface between the system’s internal data and the operator by taking in signals from various sources such as sensors, microprocessors, or programmable logic controllers (PLCs). These signals may represent physical quantities like voltage, current, temperature, or rotational speed, and the display card processes and converts them into user-readable digital formats. Once processed, the information is visually presented on an integrated display unit typically a 7-segment LED or alphanumeric LCD, providing real-time system insights.
These display cards are commonly embedded in control panels, local operator stations, or HMI (Human-Machine Interface) units. Their primary purpose is to provide technicians and operators with immediate visual feedback regarding system behavior and performance. This is essential for maintaining operational efficiency, identifying anomalies, and performing timely interventions in case of faults. The data shown by a digital display card typically includes:
Analog Values in Digitized Form: The card reads analog signals—such as those indicating voltage levels, temperatures, pressures, or motor speeds—and converts them into numerical data displayed on the screen. This allows operators to monitor trends and detect abnormalities quickly.
Alarm Codes or System Faults: When the system detects an operational issue or a failure, the display card may present a predefined error or alarm code. These codes help maintenance teams identify the root cause without needing deeper diagnostics.
Configuration Parameters: During system setup or maintenance, the digital display card can be used to show or modify parameters such as threshold limits, operating ranges, calibration values, or time delays.
System Runtime Diagnostics: It can also provide continuous monitoring of system performance, including metrics such as uptime, cycle count, operational status, communication status, or power supply condition. In more advanced systems, diagnostic messages may include communication loss alerts, sensor failures, or overheating warnings.
OPERATION:
The operation of a Digital Display Card is based on acquiring, processing, and displaying critical system data in real time. Once installed within a control system, the card continuously communicates with various internal and external components such as sensors, controllers, processors, or field devices. These components send electrical signals either analog or digital—depending on the nature of the input data. When the incoming signal is analog (e.g., from a temperature or pressure sensor), the card uses an Analog-to-Digital Converter (ADC) to convert it into a digital signal. Digital signals from sources such as PLCs or microcontrollers are directly interpreted. After the signal is processed, the data is translated into a human-readable format and displayed on the built-in visual interface, typically an LED or LCD display.
WOC has the largest stock of GE Speedtronic Gas Turbine Control System Replacement Parts. We can also repair your faulty boards. We can also supply unused and rebuilt backup with a warranty. Our team of experts is available around the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.
What is a digital display card?
A digital display card is an electronic device that is used to monitor and display critical parameters in a control system. In a gas turbine control system, a digital display card is used to provide visual feedback of important parameters such as temperature, pressure, and speed.
What are the benefits of using a digital display card?
The use of digital display cards in a control system allows operators to quickly and easily monitor critical parameters, make adjustments as necessary, and prevent damage to the system. Digital display cards can also include data logging, communication ports for remote monitoring, and self-diagnostic features.
How is a digital display card installed and configured?
Digital display cards are typically installed by connecting them to the sensors and other equipment in the control system. The card can then be configured using software or by using on-board controls. The specific installation and configuration process will vary depending on the type of card and the control system
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