Appendix F: Miscellaneous
Pattern Codes
On the AWG2021, it is possible to select the coding system used when pattern strings are output. If the code will be affected by the immediately preceding data, the data item just before the first item of data will be calculated as 0. The following tables show the coding systems.
NRZ: Normal data format
Pattern | Output Data |
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0 | 0 |
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1 | 1 |
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Example
Input | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
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Output | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
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NRZI: The data changes when a 1 is received. Each pattern is made up of 2 data items.
Example
Input | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
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Output | 00 | 01 | 11 | 11 | 10 | 01 | 11 | 11 | 11 | 10 | 01 | 10 |
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RZ: The data always returns to 0.
Each pattern is made up of 2 data items.
Pattern | Output Data |
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0 | 00 |
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1 | 10 |
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Example
Input | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
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Output | 00 | 10 | 00 | 00 | 10 | 10 | 00 | 00 | 00 | 10 | 10 | 10 |
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AWG2021 User Manual | F7 |