The Centronics Interface - Agilent Technologies HP 1660E Series User Manual

Logic analyzers

Table of Contents

Logic Analyzer Reference

The RS-232-C, HP-IB, and Centronics Interfaces

Data Bits are the number of bits used to represent the binary code of a

character. The HP 1660EP-series logic analyzers support 8-bit binary

Protocol governs the flow of data between the instrument and the

external device. It can be controlled either by the hardware, in which

case you select None in the RS-232-C Settings pop-up, or by the

software, in which case you select Xon/Xoff. Xon/Xoff stands for

Transmit On/Transmit Off.

With less than a 5-wire interface, selecting None does not allow the

sending or receiving device to control how fast the data is being sent,

increasing the possibility of missing data. With a full 5-wire interface,

selecting None allows a hardware handshake to occur. With a hardware

handshake, hardware signals control data flow. The HP 13242G cable

allows the logic analyzer to support hardware handshake.

The Centronics interface

The Centronics interface is an industry-standard parallel printer

interface. It can only be used as a printer interface, and is not available

to the controller. There are no Centronics-specific settings; page and

line length are set in the Printer Settings menu.