DAC98
Highspeed Multifunction PC-Card
with Incremental Encoder Inputs

   DAC98


The DAC98 is a multifunction PC adapter card at a reasonable price providing analog and digital inputs/outputs, high precision operation for quadrature incremental encoders, timer/counter for real-time operation and counting external events. The DAC98 offers a compact solution for position and speed measurements on an IBM-At-compatible PC. The evaluation of the incremental encoder signals is performed completely by 3 integrated circuits developed by amira. Each of these inputs is operated by two switchable register sets independantly from each other. This avoids loss of data during reading operations. The adapter card requires a 16 bit PC-slot and uses the supply voltage +5V from the PC bus. A DC/DC converter on-board provides the supply voltages for the analog circuits. Up to 8 DAC98 adapter cards may be installed in your PC at the same time because the card reserves only 16 addresses of the PC I/O address range. A 50-polar D-Sub connector provides all input and output signals. The shipment includes an extensive manual, sofware for function testing, driver routines in C and C++ source code as well as a DLL interface for Windows3.1 and Windows95. An optional adapter card is available providing all input and output signals at screw terminals.

 

Technical Data


Analog Inputs/Outputs

  • 8 analog inputs with 12 bit resolution and a programmable input signal range of 5V, 10V, +/-5 V, +/-10 V for each channel
  • A/D-conversion time 6 ms
  • 2 analog outputs with 12 bit resolution and an output signal range of +/-10 V, 0..10V
  • D/A-conversion time 1 ms

Timer

  • 1 x 32 bit timer to control interrupts with a time resolution of 0.5 ms
  • 1 x 16 bit timer/counter
  • Programmable frequencies for timer input: 8MHz, 4MHz, 2MHz, 1MHz, 500kHz, 250kHz, 125kHz, 62.5kHz
  • Usable interrupt channels: 3, 4, 5, 7,9,10,11,12,15
   

Digital Inputs/Outputs

  • 8 digital inputs with TTL level
  • 8 digital outputs with TTL level

Additional Features

  • Sockets for all IC's.
   

Incremental Encoder Inputs

  • 3 quadrature incremental encoder inputs with 16 bit counters

Dimensions

  • 250mm x 100 mm (length x height)


Programming

Driver routines (source code) in C and C++ as well as a DLL interface for WIN3.1 and WINDOWS95 are included.

 

Address Range

One of 8 possible base addresses (0x300..0x370) is selectable by DIP switches (3 bit coding).

 

Shipment

PC-card, manual, floppy disks containing driver routines and a test program.

 

Accessories

An experimental adapter card providing all input/output signals at srew terminals.

A cable with 50-polar female D-Sub connectors ( length approx. 150 cm).

 

Order Information

DAC98 PC adapter card

Prod. Number PCA902
Experimental adapter card for DAC98

Prod. Number Opt. 902-01
50-polar cable for DAC98

Prod. Number Opt. 902-04