1260-145 User Manual
Module Specification 1-22
Racal Instruments
2003
module. If five additional modules are likewise loaded, then the
overall carrier dissipation is approximately 90W, which is within the
cooling available in most commercial VXIbus chassis. Apart from
the thermal issues, however, it is important to remember that a
fully enabled 1260-145G card would draw over 3A of current from
the +5V supply. If this is multiplied by six for the remaining slots, a
load of 18A would burden the +5V supply, exceeding the
specifications for the 1260-100 carrier. In reality, the worse-case
situation is not likely, since the 1260-145G is a matrix switch where
typically only one relay is engaged at a time and the power
dissipation falls considerably below that calculated in the example
above. For practical purposes, as the calculations can illustrate for
normal operation, the 1260-145G contributes a negligible amount
of thermal load on a chassis.
Содержание 1260 VXI
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