
DX-80 I
NSTALLATION AND
M
AINTENANCE
M
ANUAL
P7290 IMM
1-20
MTBF (Mean-Time Between Failure) data:
Mean-Time Between Failure Analysis
System components
Cabinet Assembly
86.0
Power Supply Unit
170.0
CPM
2915.7
408M
11407.3
DPM8
3560.8
COM4
6146.5
APM4
6860.2
MDM
761.0
AAM
2337.3
Method:
1. Use the figures above for each unit installed (or to be
installed) and calculate the total for this system
configuration.
2. Use the total from step 1 in place of the variable “x” in the
formula at the right to calculate MTBF for this system
configuration.
(1
÷
x)(10
9
) = MTBF hours
Содержание DX-80
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