Specifications:

• Model #: PCM-QUAD02
• More Information:
  • Quadrature Encoder Input Board
  • Slot: Type 2 PCMCIA
  • Input:
    • Receiver Type: SN75ALS175
    • # of Channels: 2
    • Input Voltage Range: ñ12VDC
    • Input Sensitivity: ñ200mV
    • Input Hysteresis: 50mV typ
    • Input Impedance: 12K? min
    • Propagation Delay: 27ns max
  • Counter:
    • Counter Type: LS7266R1 24-bit Dual-Axis
    • Quadrature Mode:
      • Clock Frequency: 4.3MHz Max
      • Separation: 57ns min
      • Clock Pulse Width: 115ns min
      • Index Pulse Width: 85ns min
    • Count Mode :
      • Clock Frequency: 30MHz Max
      • Clock A Pulse Width: 16ns min 
    • Filter clock: 10 MHz
    • Digital Filter Rate 10 MHz Software Selectable
      Crystal Oscillator:
      • Frequency: 10MHz
      • Frequency Accuracy: 100ppm

Item Specifics & Seller Notes:
Writing is present on the front of the card.