GE DS200FCGDH1B LCI Control and Gating Board

General Information:

• Part Number: DS200FCGDH1B
• Manufacturer: General Electric
• Product Type: Gate Distribution and Status Card
• Series: Mark VI

Key Features:

• Number of Channels: 12
• Operating Voltage Range: -8 mV to +45 mV
• Operating Temperature Range: -30 ºC to 65 ºC
• Power Supply: 24 V DC

Physical Details:

• Board Dimensions: 9.2 x 6.3 inches
• Weight: 0.45 kg

Functional Overview:

• System Clock:
  The card includes a system clock that generates firing commands and timestamps for feedback signals. It uses a 16-bit up-counter that resets after reaching the value 0FFFFH.

• System Reset:
  Upon power-up or hardware reset, this function restores all registers to their initial values, ensuring the system starts in a known state.

• Heartbeat Function:
  The card sends a periodic operational signal, activated by the first write from the host CPU. A green IMOK LED lights up to indicate the system's operational status.

• Firing Control:
  It supports up to six fiber-optic firing signal transmitters, controlled through a firing mask register. The host CPU can directly write to the register via the VME bus.

• Voltage Feedback from NATO Board:
  The card receives voltage signals (both AC and DC) from the NATO board via a 20-pin ribbon cable. It ensures that output voltage is maintained within a 10 V range, adjustable via jumper settings.

• Signal Conditioning:
  Analog feedback signals are processed using voltage-controlled oscillators. The card also integrates six Sigma-Delta converters for accurate handling of both voltage and current signals.