The AXN/DSI/401 is an Axon bus monitoring module that monitors the status (high/low) of up to 24 differential ended discrete input channels.
Features
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24 differential ended, discrete, bi-level input channels
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24 independent, 32-bit counters with ten different operating modes
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40 ns internal resolution
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FIFO based time tagging
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Resettable counters
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Detection of 0.5 μs wide input signal pulses
Applications
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Engine speed measurement
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Data capture from a parallel bus
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Timestamping of events
The AXN/ITE/01U allows Axon user modules to be housed remotely from the Axon chassis.
The AXN/EXT/401 is an extender card, which allows modules contained in an Axonite (AXN/ITE/01U) remote housing to connect to an Axon chassis.
The AXN/ADC/401 is used to condition and digitize up to eight analog channels.
AXN/DSI/401 24 Channel Discrete Input
The AXN/DSI/401 is an Axon bus monitoring module that monitors the status (high/low) of up to 24 differential-ended discrete input channels. Each of these has an assigned programmable 32-bit counter. Additionally, each of the inputs can be used to trigger time-tagged events.
Each counter can be programmed to operate in one of the following modes: Period, Pulse Width, Duty Cycle, Frequency, Events Since Sample, Events Since Power Up, Events Since Trigger, Samples Since Power Up, Samples Since Reset, or Time Since Event. The range of each counter is programmable, as is the threshold (within ±28V), hysteresis (0.8 to 20V), and sensitivity to the rising/falling edge.
All the channels control the time tagging to the 1K word deep FIFO (80 bits wide each word). For each input, time tagging can be triggered by a rising edge, falling edge, both edges, or neither (when the channel is disabled). Every time a trigger occurs, a 96-bit word is written to the FIFO consisting of the 24 inputs (configurable to be either input state after the change or value representing the bits which triggered the event) and the 64-bit at which the event happened. You can choose to store 48-bit IRIG 106 Chapter 4 time or 64-bit PTP time in the FIFO. There are also three FIFO flags that indicate that the FIFO is empty, that a message has been skipped, or that a message is stale.
Aerospace Instrumentation Brochure
Modern aerospace instrumentation systems can be highly complex, and it can be difficult to know how to meet program needs. It’s not unusual for requirements to change during a campaign and cause significant delays, and data must be captured reliably no matter what – otherwise expensive additional flights will be needed or months of program data could be lost. Read our brochure to learn how you can reduce your risk with commercial off-the-shelf (COTS) solutions.
Axon Data Acquisition Unit (DAU) Product Family Brochure
For airborne applications where reliability and size, weight, and power (SWaP) are critical, the Curtiss-Wright Axon family of data acquisition units (DAU) are ready to take flight. Designed leveraging our decades of experience as a trusted, proven leader, Axons are future-proof, SWaP-optimized, and available in a variety of flexible configurations to meet your exact program requirements.