The MIL-STD-1553B to/from Fiber Optic Interface unit provides an interface between the MIL-STD-1553B (electrical bus) and MIL-STD-1773 (Fiber optic bus). The unit provides Fibre optic interface for two channels of MIL-STD-1553B bus. Either two channels of same bus (i.e. dual redundant channels) or single channel of two different buses can be connected to FO.
The unit finds applications requiring long distance data transfers through MIL-STD-1553B protocol involving bus lengths of the order of 1 - 3 kilometres. The unit also can be used for 1773 to MIL-STD-1553B conversions facilitating the testing of optical systems with existing MIL-STD-1553B test equipment. The unit also can be used for Wire to/from Fiber Conversion applications.
The unit facilitates the MIX & Match of MIL-STD-1553B/1773 Buses
Threshold Voltage
Transformer Coupled
Measured on Stub : 0.860Vp-p
Common-Mode Voltage : 10Vpeak
Differential Output Voltage
Direct Coupled across 35 Ohms
Measured on bus : 9 Vp-p
Transformer Coupled across 70 Ohms
Measured on Stub : 27 Vp-p Output
Noise Direct Coupled : 10 mVp-p
Output Noise Transformer Coupled :250 mVp-p Rise / Fall Time : 300 ns
Note-1: Direct Coupled Bus is available as an optional.
Note-2: ACL is continuously working on improvements of its products; hence these specifications are subject to change without any notice. Wherever the products are updated, the updated/revised version will be supplied.