Chapter 9: 2X20 Customer Display Interface; Introduction; General Specifications; Serial Communication Interface - NCR RealPOS 72XRT POS User Manual

2x20 Customer Display Interface
Chapter 9:

Introduction

The 2x20 Customer Display consists of a Vacuum Florescent Display (VFD) with two
rows of twenty 5x8 dot matrix characters, an RS-232 serial interface, driver circuitry, DC
to DC/AC converter, and a character generator.

General Specifications

Item
Number of characters
Character Configuration
Character Height
Character Width
Character Pitch
Line pitch
Peak Wavelength of Illumination
Luminance

Serial Communication Interface

The display receives commands and data from the host using an RS 232 serial interface,
framed at 9600 baud, 8 data bits, no parity, and one stop bit.
Value
2 Rows x 20 Characters
5 x 8
8.86 mm
3.90 mm
5.15 mm
9.64 mm
505 mm
350 Cd/m2 (102 fL) (Minimum
700 Cd/m2 (204 fL) (Typical)