GE IS200VTCCH1CBB IS200VTCCH1C Mark VI Thermocouple Card

The General Electric IS200VTCCH1CBB, also cataloged as the IS200VTCCH1C Thermocouple Input Card, operates as a dedicated hardware component for thermocouple sensor signal processing within General Electric Mark VI Speedtronic control system platforms. The board accepts direct millivolt analog inputs generated by field thermocouple sensors, digitizes the signals via onboard analog-to-digital converters, and streams linearized temperature telemetry across the VME backplane to the primary controller rack.

Hardware Specifications

Firmware Flash Compatibility & Backplane Bus Integrity

The IS200VTCCH1CBB incorporates onboard EEPROM firmware memory to preserve flash revision parity during system boot initialization. Upon powerup, the VME rack controller validates board revision signatures against system firmware baselines to ensure deterministic bus arbitration. Internal signal paths maintain channel-to-channel isolation and low crosstalk latency across high-density I/O configurations, preventing thermal measurement drift under continuous backplane traffic.

Frequently Asked Questions

Q: Is hot-swapping permitted for the IS200VTCCH1CBB card during active rack operation?

A: No. Power to the VME rack frame must be completely de-energized prior to inserting or removing the IS200VTCCH1CBB card to prevent transient voltage spikes on the backplane connector pins.

Q: How is cold junction compensation handled by the card hardware?

A: Cold junction compensation (CJC) reference values are acquired via dedicated thermistor circuits located on the associated terminal block board (TBVT) and transferred directly to the card signal conditioning stage.

Field Installation Guidelines

Ensure the rack enclosure is de-energized before mounting. Align the card edge connectors precisely with the VME backplane card guide tracks. Firmly push the card into the slot until the top and bottom injector/ejector levers lock into position. Tighten retaining screws to 0.4 Nm to secure mechanical stability and ground bonding. Thermocouple wiring shields must be terminated at designated shield bars near the terminal blocks using short, low-impedance ground straps to mitigate high-frequency electrical noise EMI.