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68DT1

3U OpenVPX Multichannel Discrete I/O Board

The 68DT1 is a 3U OpenVPX™ board featuring up to 96-Channels of Standard Functionality (SF) DT1 module-type or Enhanced Functionality (EF) DT4  module-type Discrete I/O functions [foptioned, factory configurable].48-Channels are dedicated as input (voltage or contact sensing with programmable, pull-up/pull-down current sources). An additional 24 or 48-Channels are programmable for either input or output (current source, sink, or push-pull) switching up to 500 mA per channel from an applied 3 – 60 V external VCC source (or sink to ISO-GND). The 68DT1 can sense broken input connections and whether an input is shorted to +VCC or to ground. Additional features of the DT4 EF are listed below. The 68DT1 offers unparalleled programming flexibility, a wide range of operating characteristics, and a unique design that eliminates the need for pull-up resistors or mechanical jumpers.

Features
  • 3U OpenVPX Profiles: MOD3-PER-1U-16.3.3-2, SLT3-PER-1U-14.3.3
  • PCIe (x1)
  • 1x 10/100/1000 Base-T Ethernet
  • IMPC (option): VITA 46.11 Tier-2 compatible
  • Commercial or rugged applications
  • Operating temp: Commercial: 0 ºC to +70 ºC, Rugged: -40 ºC to +85 ºC
  • Conduction or air-cooled options: VITA 46/48/65 compliant, 4H, 0.8" Pitch
  • Power / Weight: 5V @ 1.5A (max.) (external Vcc not included), 1.25 lbs. (est.)
  • 48-Ch. programmable for: Input: voltage or contact sensing
  • 24-Ch. or 48-Ch. programmable for: Input: voltage or contact sensing, Output: current source, sink or push-pull (per cannel/bank)
  • Application features and support: Current share, by connecting multiple channels in parallel, Handle high inrush current loads (for example, two #327 incandescent lamps in parallel), Dual channel "turn-on" (series channel output) applications (e.g. dual series "key" missile launch control), Ability to sense broken input connection and if input is shorted to +Vcc or to ground, Ability to read I/O voltage and output current (indicates if load is connected) 
  • 10 µs input timing resolution
  • Programmable input debounce circuitry (filter) with selectable time delay; eliminates false signals resulting from input relay contact bounce
  • Continuousd Built-In-Test (BIT)
  • Intelligent I/O library support included
  • (Optional) Enhanced (EF) Mode Operations: Input: Pulse Measurements, Transition Timestamps, Transition Counters, Period Measurement and Frequency Measurement, Output: PWM Output and Pattern Generator Output

Documentation
2/2/2021 3:40:02 PM
2/2/2021 3:40:24 PM
Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 70 smart I/O, communication, and Ethernet switch functions, providing the highest packaging density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

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