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Home > ARINC 629 Products > VME Products > Transmitter & Bus Monitor with Error Insert/Detect Module

Data Sheet

ARINC 629 VME Basic Protocol Tx and Bus Monitor with Error Insert/Detect Module

The Sy629VME-BPE is a daughter module fit to the Sy629VME-BPM card and provides a convenient means for monitoring ARINC 629 bus traffic whilst providing extensive error detection & identification capability.

 

All features of the Sy629VME-BPM card are retained when the daughter module is fitted. The daughter module also provides the ability to insert a comprehensive range of transmit faults, while transmitting and receiving data in accordance with programme data written into the XPP and RPP personality memory.

 

The Fault Insertion and Detection facility provides enhanced error insertion and identification capability together with the ability to insert user defined errors into the ARINC-629 bus. The errors are inserted by writing pairs of words to the Error Insert FIFO. The first word defines the type of error and the second word defines where the error should be inserted, by reference to the XPP defined transmit schedule. Errors can be inserted at the word or string level.

 

Fault Insertion and Detection:

- Gap

- MID SYNC Transition

- Bi-Phase

- Parity

- High/Low Bit Count


Data describing detected receive errors is automatically placed in the Error Detection FIFO where it can be accessed by the user software.

Sales Ref: Sy629VME-BPE





Features


- Uses DATAC chip


- Direct access to XPP & RPP


- Block & Independent Modes


- Multiple Dual Data Buffers


- High Resolution System Timer


- Cyclic Redundancy Checking (CRC)


- Full Bus Monitoring


- Multiple XPP


- External Timer Clock input


- Fault Insertion and Detection




The Error Insert and Detection facility provides enhanced error detection together with the ability to insert user defined errors onto the ARINC-629 data bus. These errors can be inserted at either the string level or the word level.

 

String errors are realised by substituting the wordstring for a given XPP location by the wordstring defined by an alternative XPP location. This can be used to alter some of the parameters of the XPP cell and thereby create an error.

 

Word errors are divided into five types, namely:

 

- GAP

- MID SYNC transition

- Biphase

- Parity

- High/Low bit count

 

The enhanced error detection facility checks for correct:

 

- GAP

- SYNC waveform

- Biphase on data and parity

- Parity