User's Manual

Requirements Installation
SPARC/CPU−56T 37
Feature Non−OperatingOperating
Shock 5g/11 ms halfsine 15g/11 ms halfsine
Free fall 100 mm / 3 axes 1,200 mm / all edges and corners
(packed state)
Power Requirements
The board power requirements depend on the installed hardware accessories. In the
following table you will find typical examples of power requirements without any
accessories installed. If you want to install accessories on the board, the load of the
respective accessory has to be added to that of the board. For information on the
accessories’ power requirements, refer to the documentation delivered together with the
respective accessory or consult your local Force Computers representative for further
details.
The power supply has to meet the requirements given in the tables below.
Table 6: Power Requirements
Requirement
5V 12V
Minimum Voltage 4.88V 11.64V
Typical Voltage 5V 12V
Maximum Voltage 5.25V 12.6V
Typical Current 6A 1.5A
Maximum Current 7A 1.63A
Typical Power Requirement 30W 18W
Maximum Power Requirement
35W 20W
Note:aThe CPU board only powers up if the 5V and 12V supply voltages are stable and
within their limits. This complies to the VMEbus specification. However, there are
systems which are not fully VMEbus−compliant. The power supplies of these systems
do not turn on the 12V supply if the 5V supply has not been loaded before. Use a
VMEbus board which loads the 5V in these systems to avoid a power−up deadlock
situation.
a