Section 13: Model 3750 multifunction control card
Series 3700A Switch and Control Cards Reference Manual
13-20
3700AS-909-01 Rev. B / December 2011
Options for working with power consumption limitations
If the system is experiencing power limitations, there are two ways to possibly improve the power
capability of the system.
•
Turn off modes of operation or functions when they are not in use. For example, backplane relays
on switch cards and any non-latching relay types that do not need to remain closed all the time.
This conserves power and results in more reserves available. Another example is to turn all
digital I/O as inputs when they are not needed as outputs.
•
Balance the power across banks. In the Model 3706 mainframe, the power limitations are on a
bank (3-slot) basis. By placing equal numbers of Model 3750 cards in each bank, the power
constraints for the troublesome bank may be relaxed. For example, a 4-card system would have
Model 3750 cards installed in slots 2,3 and 5,6, instead of slots 1, 2, 3, and 4. Additionally,
system planning could result in a system where a Model 3750 that uses the highest amount of
power would be located in the bank with the most reserve available.
See
Power budgeting and calculation
(on page 3-2) for more information.
