Vanguard PCI Installation Guide
11
Power Consumption
Power Consumption
It is important to make sure that the power supply has sufficient
capacity to power the board. Power consumption is dependent on
operating mode. See Table 1 .
Power Consumption for the 5 V Adapter Card is 33mA @ 3.3 V.
TABLE 1.
Power consumption, Vanguard 3.3 V
Min(Idle)
Max
PCI Clock
frequency
1.8A
5A
133.33MHz
Note –
When using the 5 V Adapter, the Vanguard still draws its
power from the 3.3 V rail.
Note –
The on-board LED display draws power from the 5 V rail.
If there is no 5 V supply, then the LED display will not function.
Warning
!
In systems based on PCI spec. 2.1 and
earlier, 3.3 V was optional. An external power supply
is required in this case.
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