XVME-2122   32 通道光隔离数字输入接口

型号：XVME-2122

详情：

XVME-212 是一款 32 通道光隔离数字输入接口，设计为与 VMEbus 结构兼容。XVME-212 能够接收 32 数字频率高达 3.4 KHz 的输入。为确保信号完整性，该设计包括集成“开关”去抖动，来自系统总线结构的通道输入。此外，机载扫描仪可以被编程为在任何输入更改状态时生成 VMEbus 中断，因此无需轮询输入模块。每个数字输入都具有反向电压保护，并且能够处理最大电压50V DC （XVME-212/L） 或 6.5V DC （XVME-212/2） 的反向偏置。

此外，该板可以是跳线以占用短 I/O 地址空间内的任何 1K 块。XVME-212 提供以下两个版本：XVME-212/l -- XVME-212 的 /l 版本带有板载 12V DC，隔离电源。12V电源出厂时连接到每个通道的输入端，因此，系统无需外部即可监控 12V 继电器触点和开关电源。12V以外的电压可以施加到输入端（在l0V-50V输入范围）;但是，需要对电路板进行一些修改（即，削减识别良好且易于访问的 PC 跟踪到 12V 板载电源）。

 XVME-212 的 /2 版本与 /I 版本非常相似，除了适用于允许输入电压范围且无板载 +12V 直流电源供应。XVME-212/2 具有 TTL 电平输入，最大输入为 6.5V。另外+12V隔离板载电源不可用，换成跳线VME背板的现有+5V电源。1.2 手动结构第一章提供了 XVME-212 的功能概述，并介绍了Xycom 标准 I/O 架构的功能。

Model: XVME-2122

Details:

XVME-212 is a 32-channel optical isolated digital input interface designed to be compatible with VMEbus architecture. The XVME-212 is capable of receiving inputs at 32 digital frequencies up to 3.4 KHz. To ensure signal integrity, the design includes the integration of "switches" to de-jitter, channel inputs from the system bus structure. In addition, the onboard scanner can be programmed to generate VMEbus interrupts when any input changes state, so there is no need to poll the input modules. Each digital input has reverse voltage protection and is capable of handling reverse bias at a maximum voltage of 50V DC (XVME-212/L) or 6.5V DC (XVME-212/2).

In addition, the board can be a jumper to occupy any 1K block within the short I/O address space. XVME-212 is available in the following two versions: XVME-212/l - XVME-212/l version with onboard 12V DC, isolated power supply. The 12V power supply comes out of the factory connected to the input of each channel, so the system can monitor 12V relay contacts and switching power supplies without external monitoring. Voltages other than 12V can be applied to the input (in the l0V-50V input range); However, some modifications to the circuit board are required (i.e., cutting the well-recognized and easily accessible PC trace to the 12V onboard power supply).

The XVME-212 version /2 is very similar to the /I version except that it is suitable for the allowed input voltage range and there is no on-board +12V DC power supply. The XVME-212/2 has TTL level input with a maximum input of 6.5V. In addition, the +12V isolated onboard power supply is not available, replace it with the existing +5V power supply of the jumper VME backplane. 1.2 Manual Architecture Chapter 1 provides an overview of the features of XVME-212 and describes the functionality of the Xycom standard I/O architecture.