9122 (B&K Precision) Datasheet资料下载 PDF(58/119 页)

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Functional Description of GPIB Interface

Devices from the interface are classified into 3 types:

Listener: a device capable of receiving data over the interface when addressed

to listen by the Active Controller.

There can be up to 14 Listeners on the bus at one time.

Usually the Active Controller will be the Talker, while a single device is the

Listener.

But it is also possible that multiple Listeners will be assigned. In this case, all

of them will execute the received commands.

A device becomes a Listener when it is addressed to listen (when it receives its

Listen address).

It stops being a Listener only when:

UNL command is received

Interface Clear (IFC) command is sent over the interface.

Talker: a device capable of transmitting data over the interface when addressed

to talk by the Active Controller.

There can be only one Talker on the bus at one time.

Usually, when a device is addressed to talk, it becomes the Talker over the

interface and Active Controller becomes a Listener.

A device becomes a Talker when it is addressed to talk (when it receives its

Talk address).

It stops being a Talker only when:

UNT command is received

A new Talker is assigned (since there can be only one addressed

Talker on the bus at one time )

Interface Clear (IFC) command is sent over the interface

Controller: a device capable of specifying the Talker and the Listeners for a

data or command transfer.

In multiple controller systems, active control may be passed between

controllers. There can be only one addressed Controller on the bus at one time.

The Controller function is usually handled by a computer.

The power supply can only be a Listener or a Talker (when addressed to talk).

相关代理商/技术参数	参数描述
9122.0513	制造商:未知厂家制造商全称:未知厂家功能描述:RUNDBUERSTE D80MM GROESSE13
9122.0513 20	制造商:RIB 功能描述:BRUSH 80MM 20MM BORE
91220	制造商:DYMO 功能描述:TAPE PAPER WHITE LETRA TAG 制造商:DYMO 功能描述:TAPE, PAPER, WHITE, LETRA TAG 制造商:DYMO 功能描述:TAPE, PAPER, WHITE, LETRA TAG; Background Colour:Pearl White; Colour:Pearl White; Material:Paper; Tape Length:4m; Tape Width:12mm ;RoHS Compliant: NA
91220 MRKBAND LETRA TAG	制造商:DYMO 功能描述:
912-200	功能描述:汽车连接器 Spring RoHS:否制造商:Amphenol SINE Systems 产品:Contacts 系列:ATP 位置数量: 型式:Female 安装风格: 端接类型: 触点电镀:Nickel

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