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Page 19
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Chapter 1: Specifications
Specifications
MTBF
The mean time between failure (MTBF) in power-on hours
(POH) is listed here. The estimate is based on the FIT rates of
the parts included. FIT rates are based on normalized environ-
mental conditions of T = 60°C and activation energy (Ea) of
0.7 eV. Calculations are based on 90% confidence limit.
We estimate that inside the housing, temperature will be 15°C
higher than the ambient temperature. Therefore, the MTBF
calculation refers to an ambient temperature of 45°C. The
humidity is limited to 60%.
ACX288: 260,000 POH;
ACX160: 310,000 POH;
ACX080: 320,000 POH;
ACX048: 350,000 POH;
CPU board: 480,000 POH;
I/O board SFP: 500,000 POH;
I/O board CATx: 410,000 POH
DKM FX 288/160 PSU: 200,000 POH;
DKM FX 80/48 PSU: 130,000 POH;
ACXC80: Chassis: 90,690;
Per fan: 280,000 POH,
Per PSU: 238,000;
ACXC80F: Chassis: 83,350;
Per fan: 280,000 POH,
Per PSU: 238,000;
ACXC48F32: Chassis: 87,250;
Per fan: 280,000 POH,
Per PSU: 238,000;
ACXC64: Chassis: 97,300;
Per fan: 280,000 POH,
Per PSU: 238,000;
ACXC64F: Chassis: 92,900;
Per fan: 280,000 POH,
Per PSU: 238,000;
ACXC48F16: Chassis: 95,600;
Per fan: 280,000 POH,
Per PSU: 238,000;