Specifications

E271-2201 and E271-2202 Controllers 125
E271-2201 AND E271-2202 CONTROLLERS
Electrical
Microprocessor-based with an on-chip successive approximation A/D converter.
Supply Voltage and Current
E271-2201 +5Vdc ±10%, 250ma typical. ±12Vdc ±10%, 75ma typical.
E271-2202 Same.
Interface
E271-2201 Industry Standard Architecture (8-bit subset). Polled or Interrupt-
driven (IRQ 2-7). Base I/O Port selectable for any address that is a
multiple of 8. Interrupt and Base I/O Port jumper or software
selectable. Occupies 8 consecutive I/O ports. Interrupt sharing
supported.
E271-2202 IBM Micro Channel (8-bit subset). Polled or Interrupt-driven. Base
I/O Port and Interrupt (IRQ 2-7) are selected by the System
Configuration routine on the IBM Reference Disk. Occupies 8
consecutive I/O ports. Interrupt sharing supported.
Acknowledgements for command set and query.
Operating Modes
SmartSet protocol. E271-2201 also emulates E271-141 protocol (8 or 12-bit
Mode).
Initial/Stream/Untouch Modes, on-board calibration, coordinate scaling to ±32K,
Range Checking, Trim and Tracking Modes.
Jumper or software selectable.
Touch Resolution
Typical raw coordinate output range: 400 .. 3800, 600 .. 3500. No missing
coordinates.