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VCM-DAS-2PC/104 Data Acquisition & Control Module

PC/104 Data Acquisition & Control Module

PC/104 expansion module: 200 kHz analog input, analog output, and digital I/O


  • Analog Input
    16 channels
    16-bit input resolution
    Single ended, high impedance inputs
    Electronic digital calibration
    Up to 200 K samples/second
    5V and 10V input ranges
    On board timer for periodic readings
    Auto retrigger mode
    Auto Channel Increment Mode
    DMA support
    Compatible with industry standard 5B01 series signal conditioners
  • Analog Output
    2 channels
    12-bit resolution
    Electronic digital calibration
    0-5V and 0-10V output range
    40 S update time
    Short circuit proof, 5 ma output current
  • Digital I/O
    Two 8-bit ports
    24 ma output drive
    Programmable read-only or read/write
    Opto 22 compatible
    EEPROM storage for user data

Software Expertise: Reference & Software Expertise

Embedded PC/104 ModuleRoHS-compliant


The VCM-DAS-2 module provides a combination of analog I/O, digital I/O, and non-volatile storage, which makes it ideal for data acquisition and control applications. All of its functions are provided on a single 3.8 x 3.6 PC/104 module.

The analog input section features 16 single-ended input channels with 16-bit resolution, fast 5 S conversion, and a 5V or 10V input range (153mV or 305mV resolution). Throughput of up to 200 kHz may be realized with conversions on one channel and up to 100 kHz when scanning between channels. A variety of automatic channel scanning and triggering modes are available, including DMA support.

The analog output section includes two 12-bit analog output channels. Each may be jumpered independently for 0-5V or 0-10V output. Both sections feature simplified calibration using programmable digital pots. In addition, the on-board EEPROM which is used to store the calibration values has free space available for user data. The digital pots power up and reset to mid-scale, and can be set to any calibration value during system initialization. The digital I/O section provides 16 digital I/O lines which feature high current TTL drivers. The two 8-bit ports are byte configurable as inputs only or outputs with readback. The digital interface is plug compatible with Opto 22 type modular I/O racks.

Complete C Language source code drivers and DOS-based diagnostic and calibration routines are available for download.

VersaLogic products are designed for use by OEMs working in a variety of market applications: Aerospace, Defense, Energy, Industrial, Security, Medical, Military, Robotics, and Transportation. Anywhere that the need for superb quality and high-performance embedded computing exists, applications include: automation, avionics, gateway, in-vehicle, monitoring, simulation, and vision.

VersaLogic delivers extremely reliable standard and customized embedded computers backed with unsurpassed service and the highest availability in the market. VersaLogic exists to exceed customers' product, service, support and delivery needs - whenever and wherever the need arises.


General Board Size 3.8" x 3.6" (PC/104 standard) 0.6" component height
Mechanical Storage Temperature -40 to 85C
Free Air Operating Temperature 0 to +60C
Power Requirements +5V @ 510 ma typical 12V @ 20 ma typical
Analog Input Channels: 16 channels Resolution: 16 bit (65536 counts) Accuracy: 0.003% (3 LSBs)
Input Mode: Single ended Range: 5V or 10V (jumper selectable, all channels the same) Conversion Time: 5 S
Settling Time: 5 S (applies only when switching channels)
Protection: 35V overvoltage protection Impedance: >1010 Ohms, 20pF
Retrigger Timer: Programmable 20 S, 50 S, 100 S, 250 S, 500 S, 1 S
Humidity Less than 95%, noncondensing
Analog Output Channels: 2 channels
Range: 0 to 5V or 0 to 10V (jumper selectable, each channel independent)
Resolution: 12 bits
Accuracy: 1.5 LSB
Update/Settling Time: 40 S Output Drive: 5 ma, 200 pF (each channel)
Access: Bitwise serial
Digital I/O Channels: 16 (non-inverting)
Input Threshold: TTL compatible
Output Drive (H): 24 ma @ 2.4V
Output Drive (L): +24 ma @ 0.55V
Signal Direction: Byte programmable as input or output with readback
Short Protection: Short circuit to ground, indefinite duration
I/O Interface: Occupies 16 ports on any 16-bit boundary.
Interrupt Channel: IRQ 10, 11, or 12 DMA
Channel: DMA 5, 6, or 7
EEPROM Organization: Sixty-four 16-bit words
Allocation: Two words used for digital pots, 62 words available for general purpose storage
Access: Bitwise serial
External Connectors Analog In/Out: 26-pin .1" header Opto 22: 34-pin .1" header
Compatibility PC/104: Full compliance, 16-bit data bus
Specifications are subject to change without notice. PC/104 and the PC/104 logo are trademarks of the PC/104 Consortium.

Software Support Packages

Source Code
  • VCM-DAS-1 Utilities - 1.0.3
    C Language drivers and utilities for the VCM-DAS-1 PC/104 I/O card. Contains documentation, an interactive utility as an example, and source code.

Operating System Compatibility

Win 10 - Meets Specifications
Win 8 - Meets Specifications
Win 7 - Meets Specifications
Win XP - Meets Specifications
Win Std 7 - Meets Specifications
Win XPe - Meets Specifications
Win CE - Meets Specifications
Debian - Meets Specifications
Ubuntu - Meets Specifications
Knoppix - Meets Specifications
VxWorks - Meets Specifications
Neutrino - Meets Specifications
DOS - Meets Specifications


Part Number Description Photo
VL-HDW-203PC/104 extractor tool (metal)

Ordering Information

Model Description Operating Temp. Digi-Key logo
VCM-DAS-2 200 kHz Analog I/O Module 0 to +60C

Export Information

Description Value
SCHEDULE B:8471.60.7000