Notes on Triggering

Definitions

oUser Trigger is the trigger signal applied by the user.

oLogic Trigger is the trigger signal seen by the camera internal logic.

oTpd is the propagation delay between the User Trigger and the Logic Trigger.

oExposure is high when the camera image sensor is integrating light.

oReadout is high when the camera image sensor is reading out data.

oTrigger Latency is the time delay between the User Trigger and the start of Exposure.

oTrigger Jitter is the error in the Trigger Latency time.

oTrigger Ready indicates to the user that the camera will accept the next trigger.

oRegistered Exposure Time is the Exposure Time value currently stored in the camera memory.

oExpose Start Delay is the delay time from the start of Exposure to valid Trigger Ready. It is the Registered Exposure Time subtracted from the Readout time and indicates when the next Exposure cycle can begin such that the Exposure will end after the current Readout.

oInterline Time is the time between sensor row readout cycles.

oImaging is high when the camera image sensor is either exposing and/or reading out data.

oIdle is high if the camera image sensor is not exposing and/or reading out data.

Rules

oThe User Trigger pulse width should be at least three times the width of the Trigger Latency as indicated in the Specifications section of this document.

oThe end of Exposure will always trigger the next Readout.

oThe end of Exposure must always end after the current Readout.

oThe start of Exposure must always correspond with the Interline Time if Readout is true.

oExpose Start Delay equals the Readout time minus the Registered Exposure Time.

Triggering during the Idle State

oFor applications requiring the shortest possible Trigger Latency and the smallest possible Trigger Jitter the User Trigger signal should be applied when Imaging is false and Idle is true.

oIn this case, Trigger Latency and Trigger Jitter are as indicated in the Specifications section.

GX3300 Technical Manual

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Allied International GX3300C manual GX3300 Technical Manual
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GX3300C, GX3300 specifications

The Allied International GX3300 and GX3300C are versatile marine radios that bring a wealth of features and advanced technology to ensure seamless communication on the water. Designed with both recreational and professional mariners in mind, these devices enhance safety and connectivity through a user-friendly interface and robust functionality.

One of the standout features of the GX3300 series is its dual watch function, which allows users to monitor two channels simultaneously. This is particularly useful for navigating busy waterways or when keeping an ear on emergency frequencies. The radios come equipped with a powerful 25W output, ensuring clear communication over long distances.

Both models incorporate digital selective calling (DSC) capabilities, enabling users to send distress signals and communicate with nearby vessels or coast guards at the touch of a button. The internal GPS receiver is another significant attribute, providing precise location data that ensures mariners can share their position during emergencies or routine communication. This integration of GPS simplifies the process of relaying information verbally, as the device will automatically transmit the vessel's coordinates.

The GX3300C model goes a step further by including a built-in AIS (Automatic Identification System) receiver. This crucial feature allows mariners to receive information about nearby vessels, enhancing situational awareness and safety, especially in congested waters. AIS data displays the position, course, and speed of nearby ships, which aids in collision avoidance and navigation planning.

Both models feature a clear, backlit LCD screen that guarantees visibility under various lighting conditions. The intuitive controls and menu navigation make operating the radios straightforward, even for less tech-savvy users. The rugged design of the GX3300 series ensures durability against harsh marine environments, with water and shock resistance being key characteristics.

Additionally, these radios support an extensive range of frequencies, allowing for worldwide marine communication. With built-in weather channels, users can stay informed about changing weather conditions, which is crucial for safe navigation.

Overall, the Allied International GX3300 and GX3300C radios combine advanced communication technologies with practical features to enhance marine safety and connectivity. Their reliable performance and user-friendly design make them essential tools for anyone operating on the water, ensuring that help is always just a call away.
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