GPIB-SCSI-A 高性能 控制器 采用双缓冲方案

【产品详情】

National Instruments GPIB-SCSI-A GPIB SCSI 控制器

特征：

双缓冲

协议转换器

可编程超时

1 MB/s 最大传输速率

NI高性能GPIB-SCSI / GPIB-SCSI-A控制器可与带有SCSI端口的计算机配合使用，以控制多达14个GPIB设备并与之通信，或与具有GPIB端口的计算机配合使用，以控制多达7个SCSI设备并与之通信。GPIB-SCSI-A采用双缓冲方案，允许用户同时进行SCSI和GPIB传输。除了一个标准GPIB端口外，GPIB-SCSI-A在后面板上还具有两个额外的SCSI-1端口。

GPIB-SCSI-A（部件号：776569-01、776569-02、776569-03、776569-04、776569-05、776569-06）是GPIB SCSI控制器。 该控制器由美国国家仪器公司开发。NI GPIB-SCSI-A 可以 与 多达 14 台 GPIB 仪器 进行 通信 和 控制。此外，通过一台带有GPIB端口的计算机，可以控制7个SCSI设备。该GPIB SCSI控制器提供两种控制模式：SCSI（S）和GPIB（G）。如果实施了SCSI（S）模式，则用户能够将带有SCSI端口的个人计算机转换为GPIB控制器。如果实现了GPIB（G）模式，NI GPIB-SCSI-A接口使用户能够将SCSI设备包含在GPIB系统中。

此GPIB SCSI控制器在SCSI端口上具有异步数据传输特性。 GPIB-SCSI-A可以实现IEEE-488.2的全部功能，在GPIB端口上充当讲话者、侦听器或控制器。NI GPIB-SCSI-A接口上的SCSI地址可通过软件进行选择。SCSI 和 GPIB 端口的最大传输速率取决于与内存读/写命令关联的应用程序。SCSI/GPIB 读取到缓冲存储器的最大传输速率为 1.0 MB/s。SCSI 读取和 GPIB 从缓冲存储器读取的传输速率为 800 KB/s。SCSI 读取/GPIB 写入的直通传输（无缓冲）速率为 600 KB/s。

GPIB-SCSI-A接口提供多种输入电压选项（120-240 VAC）。 GPIB-SCSI-A还提供256 KB/s的输入RAM缓冲器。接口的最大电流要求为 120 VAC 时 90 mA。GPIB-SCSI-A接口带有一个用于GPIB端口的标准24针IEEE-488连接器，而两个50针SCSI屏蔽I/O连接器可用于SCSI端口。

相关部件号：776569-01、776569-02、776569-03、776569-04、776569-05、776569-06

GPIB-SCSI-A 高性能 控制器 采用双缓冲方案

【英文介绍】

National Instruments GPIB-SCSI-a GPIB SCSI controller

Features:

Double buffering

Protocol converter

Programmable timeout

1 MB/s Maximum transfer rate

The NI high-performance GPIB-SCSI/GPIB-SCSI-A controller can be used with A computer with a SCSI port to control and communicate with up to 14 GPIB devices, or with a computer with a GPIB port to control and communicate with up to seven SCSI devices. Gpib-scsi-a uses A dual buffering scheme, allowing users to perform SCSI and GPIB transfers simultaneously. In addition to A standard GPIB port, the GPIB-SCSI-A has two additional SCSI-1 ports on the rear panel.

The GPIB-SCSI-A (part number: 776569-01, 776569-02, 776569-03, 776569-04, 776569-05, 776569-06) is A GPIB SCSI controller. The controller was developed by National Instruments. NI GPIB-SCSI-A can communicate and control up to 14 GPIB instruments. In addition, seven SCSI devices can be controlled through a single computer with a GPIB port. The GPIB SCSI controller offers two control modes: SCSI (S) and GPIB (G). If SCSI (S) mode is implemented, the user is able to convert a personal computer with a SCSI port into a GPIB controller. If GPIB (G) mode is implemented, the NI GPIB-SCSI-A interface enables users to include SCSI devices in the GPIB system.

This GPIB SCSI controller has asynchronous data transfer features on SCSI ports. Gpib-scsi-a can implement all the functions of IEEE-488.2, acting as A speaker, listener, or controller on the GPIB port. The SCSI address on the NI GPIB-SCSI-A interface can be selected by software. The maximum transfer rate for SCSI and GPIB ports depends on the application associated with the memory read/write command. The maximum transfer rate of SCSI/GPIB reads to the buffer is 1.0 MB/s. The transfer rate of SCSI reads and GPIB reads from buffer memory is 800 KB/s. The pass-through transfer (unbuffered) rate for SCSI read /GPIB writes is 600 KB/s.

The GPIB-SCSI-A interface offers a variety of input voltage options (120-240 VAC). GPIB-SCSI-A also provides a 256 KB/s input RAM buffer. The maximum current required for the interface is 90 mA at 120 VAC. The GPIB-SCSI-A interface comes with A standard 24-pin IEEE-488 connector for GPIB ports, while two 50-pin SCSI shielded I/O connectors are available for SCSI ports.

Relevant part numbers: 776569-01, 776569-02, 776569-03, 776569-04, 776569-05, 776569-06

GPIB-SCSI-A 高性能 控制器 采用双缓冲方案

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