Transferring data – Agilent Technologies VXI E1439 User Manual
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Using the Agilent E1439
Transferring data
Transferring data
You can transfer data from the Agilent E1439C or D via the VMEbus. With the Agilent E1439D
you can also transfer data via the Local Bus and via a fiber optic interface.
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The VMEbus is the universal data bus for VXI architecture. It provides flexibility and
versatility in transferring data. Transfers over the VMEbus are 16 bits or 32 bits wide.
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The Local Bus on the Agilent E1439D supports faster transfer rates than the VMEbus. For
example, if you are transferring data from the Agilent E1439D to the Agilent E9821, the
Local Bus provides a direct pipeline to the Agilent E9821’s DSPs.
Using the Local Bus, you can transfer data in the background while processing data in a
signal-processing module. All Local Bus data transfers originate in the Agilent E1439D and
move towards a signal processing module to the right of the Agilent E1439D. If other
modules generate data to the left of the input module, the Agilent E1439D passes the data to
its right and inserts or appends its own data at the beginning or end of the frame.
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The fiber optic interface, available on the Agilent E1439D, provides data rates greater than
200 Mbytes/second. It can transmit filtered or unfiltered data, copy data from its receiver to its
transmitter, or append data to copied data.