DEIF PCM4.3船舶模块，PCM4.3使用产品

高温操作的特殊注意事项以下信息适用于以下用户：MVME172LX可能会经受高温。MVME172LX使用商业级设备。因此，它可以在环境空气温度为0°C至70°C的环境中操作C、 有几个因素会影响部件的环境温度在MVME172LX上。其中包括进气温度；空气流量特点；IP模块的数量、类型和位置；权力系统中相邻板的损耗等。

DEIF PCM4.3船舶模块MVME172-223的温度分布是在MVME945 12插槽VME机箱。这块板上有一个GreenSpring IP双P/T模块（位置a）和一个GreenSpring IP-488模块（位置b）。一个25W负荷板安装在每个负荷板附近测试板的侧面。出口空气速度约为200MVME172LX和IP双P/T模块之间的线性调频。在下面在这些条件下，观察到入口和出口空气之间的温度升高了10℃。在70°C出口空气温度（60°C进口空气）下计算MVME172LX上的设备（根据测量案例温度），且不超过100℃。对于高温操作，执行类似操作测量和计算以确定实际特定环境的营业利润。EMC法规遵从性MVME172LX在符合EMC标准的机箱中进行了测试，符合B类设备的要求。合规性是根据以下条件：所有外部输入/输出端口上的屏蔽电缆。❏ 电缆屏蔽通过金属外壳连接至底盘接地连接至导电模块前面板的连接器。❏ 导电底盘导轨连接至底盘接地。这提供了将屏蔽连接到机箱接地的路径。❏ 前面板螺钉正确拧紧。❏ 所有外围设备均符合EMC标准。对于最小射频发射，必须满足上述条件已实施。如果不这样做，可能会影响FCC的合规性包含模块的设备。MVME172LX是一种板级产品，用于标准VME应用程序。因此，OEM有责任符合其应用确定的监管准则。所有外部输入/输出连接器都经过屏蔽，以帮助满足EMC排放要求标准。MVME172LX板在EMC的MCG机箱中进行了测试

Special Considerations for Elevated-Temperature Operation

The following information is for users whose applications for the

MVME172LX may subject it to high temperatures.

The MVME172LX uses commercial-grade devices. Therefore, it can

operate in an environment with ambient air temperatures from 0° C to 70°

C. Several factors influence the ambient temperature seen by components

on the MVME172LX. Among them are inlet air temperature; air flow

characteristics; number, types, and locations of IP modules; power

dissipation of adjacent boards in the system, etc.

A temperature profile of the MVME172-223 was developed in an

MVME945 12-slot VME chassis. This board was loaded with one

GreenSpring IP-Dual P/T module (position a) and one GreenSpring IP-488

module (position b). One 25W load board was installed adjacent to each

side of the board under test. The exit air velocity was approximately 200

LFM between the MVME172LX and the IP-Dual P/T module. Under

these conditions, a 10° C rise between the inlet and exit air was observed.

At 70° C exit air temperature (60° C inlet air), the junction temperatures of

devices on the MVME172LX were calculated (from the measured case

temperatures) and did not exceed 100° C.

!

Caution

For elevated-temperature operation, perform similar

measurements and calculations to determine the actual

operating margin for your specific environment.EMC Regulatory Compliance

The MVME172LX was tested in an EMC-compliant chassis and meets the

requirements for Class B equipment. Compliance was achieved under the

following conditions:

❏ Shielded cables on all external I/O ports.

❏ Cable shields connected to chassis ground via metal shell

connectors bonded to a conductive module front panel.

❏ Conductive chassis rails connected to chassis ground. This provides

the path for connecting shields to chassis ground.

❏ Front panel screws properly tightened.

❏ All peripherals were EMC-compliant.

For minimum RF emissions, it is essential that the conditions above be

implemented. Failure to do so could compromise the FCC compliance of

the equipment containing the module.

The MVME172LX is a board-level product and meant to be used in

standard VME applications. As such, it is the responsibility of the OEM to

meet the regulatory guidelines as determined by its application.

All external I/O connectors are shielded to aid in meeting EMC emissions

standards. MVME172LX boards are tested in an MCG chassis for EMC