# TimestampCondition

Specifies a time limit for matching records, based on the record timestamps. The time limit that you specify must place an upper bound on the `Input1` timestamp, relative to the `Input0` timestamp.

You can define the limit based on the following timestamps:

- `startT` - the start time of a record from track `InputT`
- `peakT` - the peak time of a record in track `InputT`
- `endT` - the end time of a record in track `InputT`

You can also include an optional time constant, for example `startT + 5s`. The units you can use are days (d), hours (h), minutes (m), seconds (s), milliseconds (ms), and microseconds (us).

The default value (`start1 <= start0`) specifies that the record in the Input1 track must start before or at the same time as the start time of the record in the Input0 track.

Type: | String
Default: | `start1 <= start0`
Required: | No
Configuration Section: | TaskName
Example: | With the following example, the record in the `Input0` track is combined with the latest record in the `Input1` track where the peak time of the `Input1` record occurs up to 5 milliseconds after the end time of the `Input0` record.
    TimestampCondition=peak1 < end0 + 5ms
In this case the "latest" record is defined as the record with the latest peak timestamp that matches the condition (using the peak timestamp for the `Input1` track means that the records are sorted by peak timestamp).
See Also: |

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