Artesyn MVME7100 Single Board Computer Installation and Use (June 2014) - Manual (Page 31)

Hardware Preparation and Installation
MVME7100 Single Board Computer Installation and Use (6806800E08D) 31
The following table shows the power available when the MVME7100 is installed in either a 3-
row or 5-row chassis and when PMCs are present.
2.3.3 Thermal Requirements
The MVME7100 module requires a minimum air flow of 10 CFM uniformly distributed across
the board, with the airflow traveling from the heat sink to the PMC2 site, when operating at a
55°C (131°F) ambient temperature.
2.3.4 Thermally Significant Components
The following table summarizes components that exhibit significant temperature rises. These
are the components that should be monitored in order to assess thermal performance. The
table also supplies the component reference designator and the maximum allowable
operating temperature.
You can find components on the board by their reference designators as shown in Figure 2-1
and Figure 2-2 on the next page. Versions of the board that are not fully populated may not
contain some of these components.
The preferred measurement location for a component may be junction, case, or ambient as
specified in the table. Junction temperature refers to the temperature measured by an on-chip
thermal device. Case temperature refers to the temperature at the top, center surface of the
component. Air temperature refers to the ambient temperature near the component.
Chassis Type Available Power Power With PMCs
3-Row 70 W maximum Below 70 W
1
5-Row 90 W maximum Below 90 W
1
1. Keep below power limit. Cooling limitations must be considered.
Table 2-4 Thermally Significant Components
Reference
Designator
Generic Description
Maximum Allowable
Component Temperature in
Centigrade
Measurement Location
U27, U4 Gb Ethernet Transceiver 0° to +70° Ambient