The DS3800HFPE1D1B is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module with a suffix code indicating: 24-channel differential input (1), firmware revision D1 (D1), and standard environmental protection (B = basic coating). The D1 firmware represents a mid-cycle update between the older B1 and newer L1/M1 revisions, offering improved linearization accuracy and support for additional thermocouple types while maintaining the simple basic coating for indoor installations.
The DS3800HFPE1B1B is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module with a detailed suffix code indicating specific factory configurations. The “1B1B” typically denotes: 24-channel differential input (1), firmware revision B1 (B1), and standard environmental protection (B = basic coating). This variant represents an earlier production configuration of the HFPE platform, with firmware optimized for J-type thermocouples and basic humidity resistance.
The DS3800HFPE is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module from the HFPC/HFPE family with a distinct suffix. The “E” variant typically indicates a different channel configuration, expanded input types, or enhanced diagnostic features compared to the “C” or “B” versions. It processes low-level millivolt signals from temperature sensors with onboard cold-junction compensation and is designed for applications requiring higher channel density or mixed thermocouple types in a single board.
The DS3800HFPC1M1H is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module with a suffix code indicating: 16-channel differential input (1), firmware revision M1 (M1), and heavy conformal coating (H). The “M1” firmware represents a later revision than “L1,” featuring enhanced cold-junction drift correction and improved EMI filtering for better performance in high-electrical-noise environments such as large generator halls and variable-frequency-drive (VFD) installations.
The DS3800HFPC1L1H is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module with a comprehensive suffix code indicating specific factory configurations. The “1L1H” typically denotes: 16-channel differential input (1), firmware revision L1 (L1), and enhanced environmental protection (H = heavy conformal coating + extended temperature range). This variant is designed for harsh industrial environments where standard boards may fail due to moisture, dust, or extreme temperatures.
The DS3800HFPC is a General Electric Mark IV Speedtronic turbine control board, a thermocouple input module with a specific configuration variant. Unlike the “B” or “D” suffix versions, the “C” variant typically indicates a different channel count, firmware revision, or front-panel connector pinout tailored for specific turbine frame sizes (e.g., Frame 6B, 7EA, or 9E). It processes low-level millivolt signals from exhaust, bearing, and inlet temperature sensors with onboard cold-junction compensation.
The DS3800HFPB1F1E is a General Electric Mark IV Speedtronic turbine control board, a variant of the thermocouple input module with factory-installed options indicated by the suffix code. The “1F1E” typically denotes specific channel configuration (16-channel differential), firmware revision (F1), and coating type (E = conformal coated for harsh environments). It processes millivolt signals from J/K/T thermocouples with onboard cold-junction compensation.
The DS3800HFPB is a General Electric Mark IV Speedtronic turbine control board, specifically a high-density thermocouple input module with built-in cold-junction compensation. It processes up to 16–24 differential analog channels from turbine exhaust and bearing temperature sensors, converting millivolt signals to digital data for the main processor.
The DS3800HEDB is a General Electric Mark IV turbine control board, functioning as a high-density discrete I/O or thermocouple input module within the Speedtronic system. It interfaces directly with field sensors and actuators, converting analog or digital signals for the main turbine processor.
The GE DS3800HDRC1A1A is a High-Density Relay Control board for the GE Speedtronic Mark IV turbine control system. It provides high-density relay outputs with latching capability and mechanical flag indication for control and interlocking applications. The “1A1A” suffix indicates the initial production revision with fixed contact configuration and proven reliability.
The GE DS3800HDRC is a High-Density Relay Control board for the GE Speedtronic Mark IV turbine control system. It provides high-density relay outputs for control and interlocking applications, combining a large number of relay channels with advanced control features. The “HDRC” designation indicates High-Density Relay Control, optimized for space-saving control applications.
The GE DS3800HDRA1B1B is a High-Density Relay Alarm board for the GE Speedtronic Mark IV turbine control system. It provides high-density relay outputs for alarm annunciation and control signaling. The “1B1B” suffix indicates a revision with enhanced contact flexibility, improved surge suppression, reinforced isolation, and extended temperature range.
