Hitachi E-Compact High Power Series Operation Manual page 91

EC702HP-BB3
The Output Power Reduction by PSU fail follows the equation below:
Where:
Pout = Output Power Results
N1 = Number of Power Amplifiers working properly
N2 = Number of Power Amplifiers with one PSU failed
N = Total Number of Power Amplifiers = 2
Pn = Nominal Output Power after the filter
k = Reduction factor by dummy loads = 0.75
y = Reduction factor by PSU = 0.713
Obs: The output of the Power Amplifier is reduced to 40% in the case of one PSU fail
EC703HP-BB3
The Output Power Reduction by PSU fail follows the equation below:
Where:
Pout = Output Power Results
N1 = Number of Power Amplifiers working properly
N2 = Number of Power Amplifiers with one PSU failed
N = Total Number of Power Amplifiers = 3
Pn = Nominal Output Power after the filter
k = Reduction factor by dummy loads = 0.75
y = Reduction factor by PSU = 0.645
Obs: The output of the Power Amplifier is reduced to 40% in the case of one PSU fail
EC704HP-BB3 to EC712HP-BB3
The Output Power Reduction by PSU fail follows the equation below:
Where:
Pout = Output Power Results
N1 = Number of Power Amplifiers working properly
N = Total Number of Power Amplifiers (4 to 12 depending on the model)
Pn = Nominal Output Power after the filter
k = Reduction factor by dummy loads = 0.75
Obs1: The Power Amplifier switch off in the case of one PSU fail
Obs2: The Power Amplifier in the models EC704HP-BB3 to EC712HP-BB3 switch off in the case of one
or more transistors fail
1 + 2 0.73
= ( )
1 + 2 0.73
= ( )
1
= ( )
E-Compact HP-BB3 Series
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