Chapter 13
Collimation Errors
5.
The SRX prompts you to sight the same point using Face 2:
6.
Press the {READ} key or [Angle] to observe the point using Face 2. This completes the minimum set of readings necessary to calculate collimation error. Continue to take as many Face 1, Face 2 pairs as desired to any number of points. Observing two or more points with significant vertical separation will improve the result.
7.
Press {ď §} to see the calculated collimation error so far.
8.
Press {ď §} if you want to accept the result and store a collimation (COL) record in the database. Pressing {ESC} results in a confirmation prompt to discard data.
If you want to collect more collimation error data, press [NO]. Press [YES] to discard the collimation error data without storing a collimation (COL) record in the database. Once a collimation record is added to the database, corrections are applied to all subsequent observations until either the instrument type is changed or a new collimation record is added. The details of the correction calculation are given in Section 29.2.5, Collimation correction, Page 29-4. Collimation is not maintained across all jobs. When you start a new job, the same instrument is assumed, but the collimation measurement is not.
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SRX