The DS3800HIOD1G1G is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 8 outputs (1), firmware revision G1 (G1), and heavy conformal coating (G = superior chemical and moisture resistance). The G1 firmware offers advanced linearization, adaptive filtering, and enhanced diagnostics, while the G-grade coating provides excellent resistance to humidity, salt spray, and mild chemicals, making this variant suitable for demanding industrial environments requiring high-density analog output control with maximum environmental protection.
The DS3800HIOD1G1E is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 8 outputs (1), firmware revision G1 (G1), and enhanced environmental protection (E = conformal coating with improved humidity and mild chemical resistance). The G1 firmware offers advanced linearization, adaptive filtering, and enhanced diagnostics, while the E-grade coating provides superior moisture resistance, making this variant suitable for demanding applications requiring high-density analog outputs with advanced signal processing and improved environmental resilience.
The DS3800HIOD is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix indicating a different channel configuration or specialized functionality compared to the HIOA and HIOB series. The “D” suffix typically denotes a variant with enhanced diagnostics, different I/O mixing, or specialized scaling, along with basic conformal coating (or potentially enhanced coating depending on the full suffix – here the “D” at the end indicates coating level). This board is designed for applications requiring a specific balance of analog inputs and outputs with advanced monitoring capabilities.
The DS3800HIOB1H1G is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 8 inputs + 4 outputs (1), firmware revision H1 (H1), and enhanced environmental protection (G = heavy conformal coating with superior chemical and moisture resistance). The H1 firmware offers advanced linearization, adaptive filtering, and enhanced diagnostics, while the G-grade coating provides excellent resistance to humidity, salt spray, and mild chemicals, making this variant suitable for the most demanding industrial environments requiring high-density analog control.
The DS3800HIOB is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with higher channel density than the HIOA series. The “B” suffix typically indicates a variant with more analog input/output channels or a different configuration, along with basic conformal coating for standard indoor protection. This board is designed for applications requiring more analog control loops in a single slot.
The DS3800HIOA1C1E is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 4 outputs (1), firmware revision C1 (C1), and enhanced environmental protection (E = conformal coating with improved humidity and mild chemical resistance, superior to D). The C1 firmware offers advanced linearization, adaptive filtering, and enhanced diagnostics, while the E-grade coating provides better moisture resistance than D, making this variant suitable for demanding applications requiring both analog sensing and control with advanced signal processing and improved environmental resilience.
The DS3800HIOA1C1D is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 4 outputs (1), firmware revision C1 (C1), and enhanced environmental protection (D = conformal coating with improved humidity and mild chemical resistance). The C1 firmware offers advanced linearization, adaptive filtering, and enhanced diagnostics beyond B1, while the D-grade coating provides superior moisture resistance, making this variant suitable for demanding indoor and semi-outdoor applications requiring both analog sensing and control with advanced signal processing.
The DS3800HIOA1B1D is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 4 outputs (1), firmware revision B1 (B1), and enhanced environmental protection (D = conformal coating with improved humidity and mild chemical resistance). The B1 firmware offers improved linearization, filtering, and diagnostic capabilities, while the D-grade coating provides superior moisture resistance, making this variant suitable for demanding indoor and semi-outdoor applications requiring both analog sensing and control in a single board.
The DS3800HIOA1B1B is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 4 outputs (1), firmware revision B1 (B1), and basic environmental protection (B = single-layer conformal coating). The B1 firmware offers improved linearization, filtering, and diagnostic capabilities compared to earlier revisions. The B-grade coating provides slightly better moisture resistance than A-grade, making this variant suitable for indoor applications with occasional humidity.
The DS3800HIOA1B1A is a General Electric Mark IV Speedtronic turbine control board, a hybrid analog input/output module with a suffix code indicating: 4 inputs + 4 outputs (1), firmware revision B1 (B1), and basic environmental protection (A = single-layer conformal coating). The B1 firmware offers improved linearization, filtering, and diagnostic capabilities compared to earlier revisions, providing better noise rejection and signal stability for both input and output channels. The A-grade coating provides basic moisture resistance for clean indoor applications.
The DS3800HIOA is a General Electric Mark IV Speedtronic turbine control board, a high-density analog input/output module designed for processing mixed analog signals including both inputs (4–20mA, 0–10V) and outputs (4–20mA, 0–10V) on a single board. The “A” suffix typically indicates basic configuration with standard environmental protection. This hybrid I/O board is ideal for applications requiring both sensor monitoring and actuator control in a compact form factor, reducing the need for separate input and output boards.
Power: +5V DC @ 0.9A, +15V DC @ 0.25A (slightly higher than HIMA)
Scan Rate: 100ms per channel (standard)
Coating: Basic conformal coating (suffix B) – single-layer acrylic
Temp Range: 0°C to +60°C
Mounting: 6U VME Eurocard, single-slot
Diagnostics: LED status per channel (over-range, under-range, open circuit)
Advantages & Features
Higher channel density – supports up to 16 single-ended channels, doubling the capacity of HIMA (8 differential)
Flexible configuration – channels can be set as differential (8) or single-ended (16) via jumpers, adapting to different wiring schemes
Versatile input support – accepts 4–20mA, 0–10V, or ±10V signals, compatible with most industrial transmitters
Isolated channels reduce ground loop interference and protect the backplane from field wiring faults
Basic B-grade coating provides light moisture and dust protection for indoor installations
Compatible with Mark IV backplanes and some VIe systems (with adapter)
Front-panel LEDs for per-channel status (over-range, under-range, open-circuit)
Application Cases
Turbine inlet guide vane (IGV) position feedback – 4–20mA from LVDT transmitters in larger turbines with more feedback points
Fuel gas pressure and flow monitoring – multiple 4–20mA transmitters in gas turbine fuel skids
Steam pressure and flow monitoring – for steam turbine throttle, extraction, and reheat lines
Lube oil pressure and temperature – multiple transmitters on bearing and sump systems
Retrofit projects replacing obsolete GE DS3800H series analog boards where more channels are needed
Competitor Comparison
vs. DS3800HIMA (A variant): Higher channel density (16 single-ended vs. 8 differential) – HIMB offers more channels at the cost of slightly higher power consumption
vs. DS3800HIMA1C1D (C1/D variant): HIMB has basic firmware vs. C1’s advanced features; HIMB offers more channels but lower accuracy and slower scan
vs. DS3800HFPB (thermocouple board): Handles different signal types – HIMB is for 4–20mA/voltage, not thermocouples
vs. DS3800HSCB (high-speed analog input): HIMB offers more channels but slower scanning; HSCB is for dynamic signals
vs. ABB TB711 : Similar channel count, but ABB offers higher resolution (14-bit) and PROFIBUS/Modbus communication
vs. Siemens 7MH410 : Similar functionality, but Siemens offers HART protocol support on some variants
vs. Woodward 8440-2015 : Similar channel count, but Woodward offers more flexible configuration software
vs. Honeywell 51304638 : Similar channel count, but Honeywell offers better long-term stability (±0.05%)
Selection Suggestions
Critical: Confirm input signal type (4–20mA, 0–10V, or ±10V) and channel configuration (differential vs. single-ended) before installation – jumper settings must match your transmitters
Verify your backplane provides both +5V and +15V – this board requires both rails
Assess channel count – 16 single-ended channels cover larger turbine installations with more transmitters
Determine accuracy requirement – 0.1% is sufficient for most turbine process variables
Evaluate environmental conditions – B coating is suitable for clean, dry indoor installations; upgrade to C/D/G/H if needed
Order mating front connector (p/n may vary – confirm with GE)
For critical applications, consider used/refurbished units with 90-day warranty
Precautions
Critical: Do not exceed 30mA or ±30V on input channels – overvoltage may damage the ADC and isolation circuits
Critical: Use shielded twisted-pair cables for all analog inputs to avoid EMI – especially near VFDs or large transformers
Critical: Configure jumpers correctly for differential vs. single-ended wiring – incorrect settings will cause measurement errors
Ensure field power supply (+24V DC) for 2-wire transmitters is stable (if loop-powered)
Basic B coating does not protect against humidity or corrosive gases – upgrade to C/D/G/H if your environment has moisture or chemicals
Allow 30-minute warm-up before calibration
Store in ESD-safe packaging – edge connector is static-sensitive
Periodically verify channel calibration every 2 years against a certified reference
Do not hot-swap – Mark IV backplanes require power-off for insertion/removal
If replacing a similar board, confirm pinout compatibility – HIMB may differ from HIMA or other series in wiring assignments
