GPIB-485CT-A 串行控制器 GPIB至RS485控制器

【产品详情】

特征：

完全兼容 IEEE 488.2

256 KB RAM缓冲区

8 RS-232 或 RS-485 数据传输速率高达 38.4 kb/s

National Instruments GPIB RS-232/485 IEEE 488 控制器和转换器可以 将任何带有 RS-232 或 RS-485 端口的计算机或终端变成 全功能IEEE 488.2控制器。随着开关的拨动， NI GPIB-232CT-A 或 NI GPIB-485CT-A 可以 进行 任何 RS-232 或 RS-485 设备显示为 GPIB 设备。这些体积小 控制器使它们非常适合与笔记本电脑或其他 没有可用的内部 I/O 插槽的计算机。

NAT4882 IEEE 488.2 ASIC 实现了全系列 GPIB 控制器功能，包括所需的控制器功能 并由 IEEE 488.2 推荐。所有GPIB序列和操作 符合 IEEE 488.2 标准。外部拨码开关设置操作模式， GPIB主地址和串口参数。 根据版本的不同，GPIB-232CT-A和GPIB-485CT-A 控制器可以接受交流或直流电源输入。您可以连接 GPIB-232CT-A或GPIB-485CT-A最高可达14 GPIB 仪器。

National Instruments GPIB-485CT-A GPIB 串行控制器

NI GPIB-485CT-A（部件号：777146-01、777146-02、777146-03、777146-04、777146-05、777146-06、777147-01、777147-31、777148-01、777148-02、777148-03、777148-04、777148-05、777148-06、777149-01和777149-31） 提供 RS-485 串行连接，可以将普通 PC 变成功能齐全的 IEEE 488.2 控制器。NI GPIB-485CT-A 上的 RS-485 端口 采用 9 针 屏蔽 标准 D-sub 公 头 连接器。

RS-485 连接器与标准 D-sub 9 针母连接器耦合。该设备中使用的 GPIB 连接器是带有螺丝锁硬件的 24 针标准母连接器。两个连接器位于设备的相对侧面板上。与前代产品一样，GPIB-485CT-A提供交流和直流两种版本。AC 版本带有安装在前面板上的电源线插座，而 DC 版本则提供 DC 电源插孔。

该GPIB串行控制器可以配置为在G或S模式下运行。对于模式配置、数据格式、波特率和GPIB地址，器件的后面板上提供了DIP开关。只想将此设备用作听众和说话者的用户应使用 G 模式。但是，那些希望将NI GPIB-485CT-A作为GPIB控制器操作的用户应将其配置为S模式操作。

该设备具有各种控制器功能。因此，即使另一个端口繁忙，它也可以连续接受来自GPIB或串行端口的数据。此外，它可以以数字或符号形式处理请求的和连续类型的错误和状态报告。GPIB-485CT-A支持XON/XOFF和硬件握手通信协议。

相关部件号：777146-01、777146-02、777146-03、777146-04、777146-05、777146-06、777147-01、777147-31、777148-01、777148-02、777148-03、777148-04、777148-05、777148-06、777149-01、777149-31

GPIB-485CT-A 串行控制器 GPIB至RS485控制器

【英文介绍】

Features:

Fully compatible with IEEE 488.2

256 KB RAM buffer

8 RS-232 or RS-485 data transfer rates up to 38.4 kb/s

The National Instruments GPIB RS-232/485 IEEE 488 Controller and Converter can turn any computer or terminal with an RS-232 or RS-485 port into a fully functional IEEE 488.2 controller. With the flip of the switch, the NI GPIB-232CT-A or NI GPIB-485CT-A can display any RS-232 or RS-485 device as A GPIB device. These small size controllers make them ideal for working with laptops or other computers that don't have an available internal I/O slot.

The NAT4882 IEEE 488.2 ASIC implements the full range of GPIB controller functions, including required controller functions, and is recommended by IEEE 488.2. All GPIB sequences and operations comply with IEEE 488.2 standards. External DIP switch Sets the operating mode, GPIB primary address, and serial port parameters. Depending on the version, the GPIB-232CT-A and GPIB-485CT-A controllers can accept AC or DC power input. You can connect the GPIB-232CT-A or GPIB-485CT-A up to 14 GPIB instruments.

National Instruments GPIB-485CT-A GPIB serial controller

NI GPIB-485CT-A (Part number: 777146-01, 777146-02, 777146-03, 777146-04, 777146-05, 777146-06, 777147-01, 777147-31, 777148-01, 777148-02, 777148-03, 777148-04, The 777148-05, 777148-06, 777149-01, and 777149-31) offer RS-485 serial connections that can turn an ordinary PC into a fully functional IEEE 488.2 controller. The RS-485 port on the NI GPIB-485CT-A uses a 9-pin shielded standard D-sub male connector.

The RS-485 connector is coupled to the standard D-sub 9 pin female connector. The GPIB connector used in this device is a 24-pin standard female connector with screw lock hardware. The two connectors are located on opposite side panels of the device. Like its predecessor, the GPIB-485CT-A is available in both AC and DC versions. The AC version comes with a power cord socket mounted on the front panel, while the DC version provides a DC power jack.

The GPIB serial controller can be configured to operate in G or S mode. For mode configuration, data format, baud rate, and GPIB address, DIP switches are provided on the rear panel of the device. Users who only want to use this device as a listener and speaker should use G mode. However, those who wish to operate the NI GPIB-485CT-A as A GPIB controller should configure it to operate in S mode.

The device has various controller functions. Therefore, even if the other port is busy, it can continuously accept data from the GPIB or serial port. In addition, it can handle both requested and continuous types of error and status reports in numeric or symbolic form. The GPIB-485CT-A supports XON/XOFF and hardware handshake communication protocols.

Related part number: 777146-01, 777146-02, 777146-03, 777146-04, 777146-05, 777146-06, 777147-01, 777147-31, 777148-01, 777148-02, 777148-03, 777148-04, 777148-05, 777148-06, 777149-01, 77749-31

GPIB-485CT-A 串行控制器 GPIB至RS485控制器

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