3)Air Turbulence

If there is sail switch flutter due to air turbulence or improper blower (squirrel cage fan) rotation or a restriction in the exhaust ductwork, the Direct Spark Ignition (DSI) module will cycle erratically. This in turn might cause the DSI module to “LOCKOUT” (where the light emitting diode [L.E.D.] indicator will BLINK “GREEN” CONTINUOUSLY).

a)If air turbulence cause the flame to move away from the flame-probe electrode (of the Ignitor/ Flame-Probe Assembly), or if the flame goes out completely during the heat (flame) cycle, the DSI module will attempt to reestablish a flame by going into a re-ignition cycle.

4)DSI Module

If there is some sort of operational interference in the DSI system, the DSI module (acting as the “controller” for the system) will go into a “LOCKOUT” mode (where the L.E.D. indicator will

FLASH “GREEN” CONTINUOUSLY).

a)Operational interference is any adverse condition (whether internal or external) to the system. (Electrical noise is considered external noise interference because it can cause the DSI module to cycle erratically.)

NOTE: To reset the DSI module if it is in the “LOCKOUT” mode, “Burner Control Fault” will display. To clear this fault press the “CLEAR/STOP” key.

If the GAP, the ALIGNMENT, and the POSITION of the Ignitor/Flame-Probe Assembly are correct, if the gas flow and pressure is constant and consistent; if there is no adverse air turbulence; and if the DSI module remains in the “LOCKOUT” mode (where the L.E.D. indicator will FLASH “GREEN” CONTINUOUSLY) then, there is a malfunction with the DSI module itself, and it must be replaced.

NOTE: To reset the DSI module if it is in the “LOCKOUT” mode, “Ignitor Control Fault” will display. To clear this fault press the “CLEAR/STOP” key.

5)Wiring

If the DSI module is in the “LOCKOUT” mode (where the L.E.D. indicator will FLASH “GREEN” CONTINUOUSLY), and the mechanical components have been checked (i.e., the Ignitor/ Flame-Probe Assembly, the gas valve, etc.), then, there may be a problem somewhere in the DSI system wiring.

a)Check ALL the wiring within the DSI system, especially the ground connections at the DSI module and the Ignitor/Flame-Probe Assembly.

NOTE: Check for any possible damage to the ceramic insulators on the ignitor electrode and the flame-probe electrode of the Ignitor/Flame-Probe Assembly.

b)Make sure the flame-probe electrode of the Ignitor/Flame-Probe Assembly is positioned no more than 1-inch (2.54 cm) maximum from the burner tube.

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ADC AD-200 service manual Flash Green Continuously
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AD-200 specifications

The ADC AD-200 is a high-performance analog-to-digital converter designed to meet the needs of a wide range of applications including industrial automation, instrumentation, medical devices, and consumer electronics. This converter is renowned for its combination of speed, precision, and reliability.

One of the standout features of the ADC AD-200 is its exceptional resolution. Offering up to 24 bits of resolution, it provides an outstanding level of detail and accuracy in signal conversion. This high resolution makes it ideal for applications where precision is paramount, such as in audio processing and sensitive measurements in scientific research.

The AD-200 operates at a maximum sampling rate of 1 Msps (mega-samples per second), allowing it to effectively capture fast-changing signals. This speed ensures that the converter can handle dynamic input signals without missing critical data points. Additionally, the device employs a pipelined architecture, which helps to maintain high throughput while keeping latency low—an essential characteristic for real-time applications.

Another critical aspect of the AD-200 is its low input noise and distortion levels. With a total harmonic distortion (THD) of less than 0.01%, the converter maintains signal integrity even when processing high-frequency signals. This feature is crucial in audio and instrumentation applications where signal clarity and fidelity are necessary.

The ADC AD-200 is equipped with advanced digital signal processing (DSP) capabilities, allowing users to perform filtering, averaging, and other signal conditioning tasks on the incoming data stream. This built-in processing capability means users can reduce the load on external processors, streamlining system designs and improving overall efficiency.

The device supports various input voltage ranges, which makes it versatile for multiple applications. It is compatible with single-ended and differential input configurations, providing flexibility for different circuit designs and requirements.

Connectivity features include both serial and parallel interfaces, offering easy integration into various systems. The ADC also comes with a robust software development kit (SDK) that provides necessary drivers and support to facilitate quicker implementation and system optimization.

In summary, the ADC AD-200 is a versatile, high-performance analog-to-digital converter marked by its high resolution, fast sampling rate, low noise levels, integrated DSP capabilities, and flexible connectivity options. These features make it a preferred choice for engineers and developers aiming for excellence in signal processing tasks across diverse industries.
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