VMIVME4140-000 单个6U规格VMEbus板

•12完全隔离的模拟输出
•高达±1,000 V隔离，通道到通道和通道到vmebus
•12位分辨率
•电压输出范围可选为±2.5，±5，±10 V;0至+2.5 V, 5v或10v
•电压输出保护到±20 V无限期;瞬变到±50v
•10 mA负载能力电压输出在全±10 V范围
•可与4至20,0至20，或5至25 mA电流回路输出
•电压输出精度0.05%，电流回路输出精度0.08%
•4、8、12通道配置
•光学数据耦合提供完整的电流隔离
•静态回读数据寄存器简化程序控制
•前面板访问
•程控连接/断开电压输出操作，方便系统测试
•过压保护:与同伴一起使用时兼容IEEE-472
vmivme – 3456板
应用程序
•隔离的模拟子系统
•模拟电流回路
•核设施仪器仪表
•自动测试设备(ATE)
•监控系统
•高干扰环境
•系统间模拟数据传输
•接地回路消除

VMIVME-4150在单个6U规格VMEbus板上提供12个隔离的高质量12位模拟输出通道。如图1所示的功能框图所示，每个通道与所有其他通道和VMEbus都是电隔离的，并且将在高达1,000 V的持续隔离电压下运行。输出电压范围可选为±2.5，±5和±10v，或0至+2.5 V, 5v, 10v，并在这些范围内支持满10ma负载。
四通道，八通道和十二通道配置可用。在系统测试期间，输出可以断开连接或置于程序控制下的最小状态，并且在复位时自动断开连接或置于最小状态。
可选的电流模式输出支持需要标准4至20,0至20，或5至25 mA模拟电流回路的应用。当前模式输出合规性:单板供电时为9v，外部供电时为27v。
提供前面板Fail LED。LED灯在系统复位时开启，可在用户软件控制下关闭。

VMIVME-4150

• 12 fully isolated analog outputs
• Up to ±1,000 V isolation, channel-to-channel, and channel-to-VMEbus
• 12-bit resolution
• Voltage output ranges selectable as ±2.5, ±5, ±10 V; 0 to +2.5 V, 5 V, or 10 V
• Voltage outputs protected to ±20 V indefinitely; transients to ±50 V
• 10 mA load capacity for voltage outputs over full ±10 V range
• Available with 4 to 20, 0 to 20, or 5 to 25 mA current loop outputs
• 0.05 percent accuracy for voltage outputs, 0.08 percent for current loop outputs
• 4-, 8-, and 12-channel configurations
• Optical data coupling provides full galvanic isolation
• Static readback data registers simplify program control
• Front panel access
• Program-controlled connect/disconnect operation of voltage outputs facilitates system testing
• Overvoltage protection: IEEE-472 compatibility when used with companion
VMIVME-3456 board
APPLICATIONS
• Isolated analog subsystems
• Analog current loops
• Nuclear facility instrumentation
• Automatic test equipment (ATE)
• Supervisory control systems
• High interference environments
• Intersystem analog data transmission
• Ground loop elimination

The VMIVME-4150 provides 12 isolated high quality 12-bit analog output channels on a single 6U form factor VMEbus board. Each channel is electrically isolated from all other channels and from the VMEbus, as illustrated in the functional block diagram as shown in Figure 1, and will operate with sustained isolation voltages as high as 1,000 V. Output voltage ranges are selectable as ±2.5, ±5, and ±10 V, or 0 to +2.5 V, 5 V, 10 V, and full 10 mA loading is supported throughout these ranges.
Four-, eight-, and twelve-channel configurations are available. Outputs can be disconnected or placed in a minimal state under program control during system testing, and are disconnected or placed in a minimal state automatically at reset.
Optional current-mode outputs support applications which require standard 4 to 20, 0 to 20, or 5 to 25 mA analog current loops. Compliance of the current mode outputs is 9 V if the loop supply originates on the board, or 27 V with an external loop power supply.
A front panel Fail LED is provided. The LED light is turned ON during system reset and can be turned OFF under user software control.