Adlink LPCIe-3488A Manual do Utilizador descarregar pdf (Página 33)

Operations 23

LPCIe/LPCI/USB-3488A

3 Operations

This chapter describes the operation theory of GPIB bus and the

basic architecture of ADLINK’s GPIB interface cards.

3.1 Connection Configuration

The GPIB bus has 24 lines which are divided into 16 signal lines

and 8 ground return or shield drain lines. The 16 signal lines can

be divided into 8-bit parallel data transfer bus and 8 control lines.

The 8 control lines contain 5 system management lines and 3

handshake lines

Figure 3-1: Standard GPIB Connector

24 Shield

ATN

SRQ

IFC

NDAC

NRFD

DAV

EOI

DIO4

DIO3

DIO2

DIO1

Signal Ground

GND (TW PAIR W/ATN)

GND (TW PAIR W/SRQ)

GND (TW PAIR W/IFC)

GND (TW PAIR W/NDAV)

GND (TW PAIR W/NRFD)

GND (TW PAIR W/DAV)

REN

DIO8

DIO7

DIO6

DIO5

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Adlink LPCIe-3488A Manual do Utilizador Página 33