PM511V16 3BSE011181R1处理器单元模块,培训教程是指定、设计和测试在进气温度范围内可靠运行0˚至55˚C（32˚至131˚F），强制空气以一定速度冷却通常可通过使用100 CFM轴流风机实现。温度鉴定在标准摩托罗拉VME系统中进行底盘。25瓦负载板插入两个卡槽，每侧一个，靠近测试板，以模拟高功率密度系统配置。三轴组件每个风机的额定功率为100 CFM的风机直接放置在VME下方卡片固定框架。
PM511V16 3BSE011181R1处理器单元模块进气温度是在风机组件和卡笼，其中首先进入气流遇到被测模块。测试软件作为模块受到环境温度变化的影响。案例关键的高功率密度集成电路的温度是监控以确保组件供应商规范超过。而冷却所需的确切风量取决于：❏ 环境空气温度❏ 电路板类型❏ 电路板数量❏ 配电盘的位置❏ 其他热源通常使用10 CFM和490可以实现充分冷却流经模块的线性调频。需要更少的气流来冷却具有较低最大环境的环境中的模块。在更有利的热条件下，可以运行模块在高于55˚C的温度下可靠运行，气流增加。它重要的是要注意，除了空气动器的额定CFM，决定实际体积以及流经模块的空气速度。Atlas主板需要强制风冷。安装MPC604时需要额外冷却RISC处理器。3针收割台（J17）安装在为专用风扇供电的主板。参见冷却一般信息一章中的要求部分温度
The Motorola MVME177 VMEmodule is specified, designed, and
tested to operate reliably with an incoming air temperature range
from 0˚ to 55˚ C (32˚ to 131˚ F) with forced air cooling at a velocity
typically achievable by using a 100 CFM axial fan. Temperature
qualification is performed in a standard Motorola VMEsystem
chassis. Twenty-five watt load boards are inserted in two card slots,
one on each side, adjacent to the board under test, to simulate a high
power density system configuration. An assembly of three axial
fans, rated at 100 CFM per fan, is placed directly under the VME
card cage. The incoming air temperature is measured between the
fan assembly and the card cage, where the incoming airstream first
encounters the module under test. Test software is executed as the
module is subjected to ambient temperature variations. Case
temperatures of critical, high power density integrated circuits are
monitored to ensure component vendors specifications are not
exceeded.
While the exact amount of airflow required for cooling depends on:
❏ Ambient air temperature
❏ Type of board
❏ Number of boards
❏ Location of boards
❏ Other heat sources
adequate cooling can usually be achieved with 10 CFM and 490
LFM flowing over the module. Less airflow is required to cool the
module in environments having lower maximum ambients. Under more favorable thermal conditions, it may be possible to operate
the module reliably at higher than 55˚ C with increased airflow. It
is important to note that there are several factors, in addition to the
rated CFM of the air mover, which determine the actual volume
and speed of air flowing over a module.
Forced air cooling is required for the Atlas motherboard.
Additional cooling is required with the installation of the MPC604
RISC processor. A 3-pin header (J17) is provided on the
motherboard for powering a dedicated fan. Refer to the Cooling
Requirements section in the General Information chapter for
temperatur
